S Series Data Sheet
100 Watt DC-DC and AC-DC Converters
BCD20004-G Rev AC, 29-Apr-2015 Page 1 of 31
MELCHER
The Power Partners.
Table of Contents Page Page
Description
The S Series of DC-DC and AC-DC converters represents a
broad and flexible range of power supplies for use in advanced
electronic systems. Features include high efficiency, high
reliability, low output voltage noise and excellent dynamic
response to load/line changes. LS models can be powered by
DC or AC with a wide-input frequency range (without PFC).
The converter inputs are protected against surges and
transients. An input over- and undervoltage lockout circuitry
disables the outputs, if the input voltage is outside of the
specified range. Certain types include an inrush current limiter
preventing circuit breakers and fuses from tripping at switch-
on.
All outputs are open- and short-circuit proof, and are protected
against overvoltages by means of built-in suppressor diodes.
The output can be inhibited by a logic signal applied to pin 18
(i). The inhibit function is not used, pin 18 must be connected
with pin 14 to enable the outputs.
LED indicators display the status of the converter and allow for
visual monitoring of the system at any time.
Features
• RoHS lead-free-solder and lead-solder-exempted
products are available.
• Compliant with EN 50155, EN 50121-3-2, EN 45545.
• Class I equipment
• Extremly wide input voltage ranges from 8 to 385 VDC,
and 85 to 264 VAC, 47 to 440 Hz
• Input over- and undervoltage lockout
• Adjustable output voltage with remote on/off
• 1 or 2 outputs: SELV, no load, overload, and short-
circuit proof
• Rectangular current limiting characteristic
• PCBs protected by lacquer
• Very high reliability
Safety-approved according to IEC/EN 60950-1, UL/CSA
60950-1 2nd Ed.
Full input-to-output, input-to-case, output-to-case, and output
to output isolation is provided. The converters are designed,
built, and safety-approved to the international safety standards
IEC/EN 60950-1. They are particulary suitable for railway
applications and comply with EN 50155 and EN 50121-3-2.
The case design allows operation at nominal load up to 71 °C in
a free-air ambient temperature. If forced cooling is provided,
the ambient temperature may exceed 71 °C, but the case
temperature must remain below 95 °C under all conditions.
A temperature sensor generates an inhibit signal, which
disables the outputs when the case temperature TC exceeds
the limit. The outputs are automatically re-enabled, when the
temperature drops below the limit.
Various options are available to adapt the converters to
individual applications.
The converters may either be plugged into a 19" rack system
according to IEC 60297-3, or be chassis mounted. They are
ideally suited for Railway applications.
Important: For applications requiring compliance with IEC/EN
61000-3-2 (harmonic distortion), please use our LS4000 or LS5000
Series with incorporated power factor correction (PFC).
168
6.6"
60
2.4"
12 TE
111
4.4"
3 U
Description .......................................................................... 1
Model Selection .................................................................. 2
Functional Description ........................................................ 4
Electrical Input Data............................................................ 5
Electrical Output Data ......................................................... 8
Auxiliary Functions............................................................ 1 2
Electromagnetic Compatibility (EMC) ............................... 15
Immunity to Environmental Conditions ............................. 1 7
Mechanical Data ............................................................... 18
Safety and Installation Instructions ................................... 20
Description of Options ...................................................... 23
Accessories....................................................................... 30
S Series Data Sheet
100 Watt DC-DC and AC-DC Converters
BCD20004-G Rev AC, 29-Apr-2015 Page 2 of 31
MELCHER
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Model Selection
Non-standard input/output configurations or special customer adaptations are available on request.
Table 1a: Models AS
Outpu t 1 Outpu t 2 Input Voltage Effic.1Input Voltage Effic.1Options
Vo nom Io nom Vo nom Io nom Vi min – Vi max ηη
ηη
ηmin Vi min – Vi max ηη
ηη
ηmin
[VDC] [A] [VDC] [A] 8 – 35 V D C [%] 14 – 7 0 V DC [%]
5.1 16 – – AS1 0 0 1- 9 R 76 BS1 0 0 1 -9 R 77 -7, P, D, V 2, T, B, B1, G
12 8 – – AS1 3 01 - 9R 81 BS1 3 01 - 9R 83 -7, P, D, T, B, B1, G
15 6.5 – – AS1501-9R 83 BS1501-9R 85
24 4.2 – – AS1601-9R 84 BS1601-9R 86
12 4 12 3 4 A S 23 2 0- 9 R 79 B S 23 2 0 -9 R 8 0 -7, P, D, T, B, B1, G
15 3.2 15 3 3.2 AS2540-9R 80 BS2540-9R 82
24 2 24 3 2 AS2660-9R 80 BS2660-9R 82
Table 1b: Models BS, FS, CS
Outpu t 1 Outpu t 2 Input Voltage Effic.1Input Voltage Effic.1Options
Vo nom Io nom Vo nom Io nom Vi min – Vi max ηη
ηη
ηmin Vi min – Vi max ηη
ηη
ηmin
[VDC] [A] [VDC] [A] 20 – 100 VDC [%] 28 – 140 VDC [%]
5.1 16 – – FS1001-9ER 77 CS1001-9ER 77 -7, P, D, V 2, T, B, B1, G
12 8 – – FS1301-9ER 83 CS1301-9ER 83 -7, P, D, T, B, B1, G
15 6.5 – – FS1501-9ER 84 CS1501-9ER 84
24 4.2 – – FS1601-9ER 86 CS1601-9ER 85
12 4 12 3 4 FS2320-9ER 80 CS2320-9ER 80 -7, P, D, T, B, B1, G
15 3.2 15 3 3.2 FS2540-9ER 82 CS2540-9ER 82
24 2 24 3 2 FS2660-9ER 82 CS2660-9ER 82
Table 1c: Models DS, ES, LS
Outpu t 1 Outpu t 2 Input Voltage Effic.1Input Voltage Effic.1Input Voltage Effic.1Options
Vo nom Io nom Vo nom Io nom Vi min – Vi max ηη
ηη
ηmin Vi min – Vi max ηη
ηη
ηmin Vi min – Vi max ηη
ηη
ηmin
[VDC] [A] [VDC] [A] 44 – 220 VDC [%] 67 – 385 VDC [%] 88 – 372 VDC [%]
85 – 264 VAC
5.1 16 – – DS1001-9ER 79 --- -- LS1001-9ER 78 -7, P, D, V 2, T, B, B1, G
12 8 – – DS1301-9ER 84 ES1301-9ER 83 LS1301-9ER 83 -7, P, D, T, B, B1, G
12.84 5 7.5 – – DS1740-9ER 5 --- -- LS1740-9ER 5
15 6.5 – – DS1501-9ER 86 ES1501-9ER 84 LS1501-9ER 84
24 4.2 – – DS1601-9ER 86 ES1601-9ER 86 LS1601-9ER 85
12 4 12 3 4 DS2320-9ER 81 ES2320-9ER 81 LS2320-9ER 80 -7, P, D, T, B, B1, G
15 3.2 15 3 3.2 DS2540-9ER 82 ES2540-9ER 83 LS2540-9ER 81
24 2 24 3 2 DS2660-9ER 83 ES2660-9ER 83 LS2660-9ER 81
25.68 6 1.8 25.68 3 6 1.8 DS2740-9ER 6 --- -- LS2740-9ER 6 -7, T, B, B1, G
1Min. efficiency at Vi nom, Io nom and TA = 25 °C. Typical values are approximately 2% better.
2Option V excludes option D and vice versa. For models with 5.1 V output only.
3Second output semi-regulated
4Models FS, CS, DS, ES, LS are available as -7 or -9E.
5Battery loader for 12 V batteries. Vo is controlled by the battery temperature sensor (see Accessories) within 12.62 – 14.12 V. Options P,
D, and V are not available.
6Battery loader for 24 V (and 48 V batteries with series-connected outputs). Vo is controlled by the battery temperature sensor (see
Accessories) within 25.25 – 28.25 V (50.5 – 56.5 V for 48 V batteries). Options P, D, and V are not available.
NFND: Not for new designs Preferred for new designs
S Series Data Sheet
100 Watt DC-DC and AC-DC Converters
BCD20004-G Rev AC, 29-Apr-2015 Page 3 of 31
MELCHER
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Example: CS2540-9ERD3TB1G: DC-DC converter , operating input volt age range 28 – 140 VDC, 2 electrically isolated outputs,
each providing 15 V, 3.2 A, input current limiter E, control input R to adjust the output voltages, undervoltage monitor
D3, current share feature T, cooling plate B1, and RoHS-compliant for all six substances.
Product Marking
Basic type designation, applicable approval marks, CE mark,
warnings, pin designation, patents and company logo,
identification of LEDs, test sockets, and potentiometer.
Specific type designation, input voltage range, nominal output
voltages and currents, degree of protection, batch no., serial
no., and data code including production site, modification
status, and date of production.
Part Number Description
Operating in put voltage Vi:
8 – 35 VDC................................................................AS
14 – 70 VDC..............................................................BS
20 – 100 VDC............................................................ FS
28 – 140 VDC........................................................... CS
44 – 220 VDC .......................................................... DS
67 – 385 VDC ...........................................................ES
85 – 264 VAC or 88 – 372 VDC ................................ LS
Number of outputs .......................................................... 1, 2
Nominal voltage of output 1 (main output) Vo1 nom
5.1 V.................................................................... 0, 1, 2
12 V ............................................................................ 3
15 V ........................................................................ 4, 5
24 V ............................................................................ 6
Other voltages 1....................................................... 7, 8
Nominal voltage of output 2 Vo2 nom
None (single-output models) ..................................... 00
12 V, 12 V .................................................................. 2 0
15 V, 15 V .................................................................. 4 0
24 V, 24 V .................................................................. 6 0
Other specifications or additional features 1 ...... 21 – 99
Operational ambient temperature range TA:
–25 to 71 °C ............................................................... -7
–40 to 71 °C ............................................................... -9
Other 1 ...............................................................-0, -5, -6
Auxiliary functions and options:
Inrush current limitation .............................................E 2
Output voltage control input.......................................R 3
Potentiometer (output voltage adjustment)................P 3
Undervoltage monitor (D0 – DD, to be specified) ......D 4
ACFAIL signal (V2, V3, to be specified) ....................V 4
Current share control ................................................... T
Cooling plate standard case .............................. B or B1
Cooling plate for long case 220 mm1............................... B21
RoHS-compliant for all 6 substances5................................... G
1Customer-specific models
2Option E is mandatory for all -9 models, except AS and BS.
3Feature R excludes option P and vice versa. Option P is not available for battery charger models.
4Option D excludes option V and vice versa; option V is only available for models with 5.1 V single output.
Note: The sequence of options must follow the order above. This part number description is descriptive only; it is not inteded for
creating part numbers.
CS 2 5 40 -9 E R D3 T B1 G
S Series Data Sheet
100 Watt DC-DC and AC-DC Converters
BCD20004-G Rev AC, 29-Apr-2015 Page 4 of 31
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Input filter
Control circuit
2
4
Opt. P
3
Forward converter
(approx. 120 kHz)
CY
16
18
20
22
12
4
6
8
10
14
Output
filter
1
26
28
30
32
24
–+
CY
Vi+
Vi–
R
i
D/V
T
03057b
S+
Vo+
Vo–
S–
Fuse
4
N
4
L
CY
CY
+
Bridge
rectifier
4
Ci
Control circuit
1
2
Opt. P
3
Forward converter
(approx. 120 kHz)
16
18
20
22
12
14
4
6
8
10
Output 2
filter
Output 1
filter
26
28
30
32
24
–+
R
i
D
T
Vi+
Vi–
03058b
Vo1+
Vo1–
Vo2+
Vo2–
Input filter
4
4
N
4
L
C
Y
C
Y
C
Y
C
Y
C
Y
C
Y
+
Fuse
Bridge
rectifier
4
C
i
Functional Description
The input voltage is fed via an input fuse, an input filter, a
bridge rectifier (LS models only), and an inrush current limiter
to the input capacitor C1. This capacitor sources a single-
transistor forward converter with a special clamping circuit and
provides the power during the hold-up time.
Each output is powered by a separate secondary winding of
the main transformer. The resultant voltages are rectified and
their ripple smoothed by a power choke and an output filter . The
control logic senses the main output voltage Vo1 and generates,
with respect to the maximum admissible output currents, the
control signal for the switching transistor of the forward
converter.
The second output of double-output models is tracking to the
main output, but has its own current limiting circuit. If the main
output voltage drops due to current limitation, the second
output voltage will fall as well and vice versa.
Fig. 1
Block diagram of single-output converters
1Transient suppressor (VDR)
2Suppressor diode (AS, BS, FS models)
3For CS, DS, ES, LS: Either NTC (-7 models only) or option E
4LS models only
Fig. 2
Block diagram of double-output models
1Transient suppressor (VDR)
2Suppressor diode (AS, BS, FS models)
3For CS, DS, ES, LS: Either NTC (-7 models only) or option E
4LS models only
S Series Data Sheet
100 Watt DC-DC and AC-DC Converters
BCD20004-G Rev AC, 29-Apr-2015 Page 5 of 31
MELCHER
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Electrical Input Data
General Conditions
– TA = 25°C, unless TC is specified.
– Pin 18 connected to pin 14, Vo adjusted to Vo nom (if option P); R input not connected.
– Sense line pins S+ and S– connected to Vo+ and Vo– respectively.
Table 2a: Input data
Input AS BS FS Unit
Characteristics Conditions min typ max min typ max min typ max
ViOperating input voltage Io = 0 – Io nom 8 35 14 70 20 100 VDC
Vi nom Nominal input voltage TC min –TC max 15 30 50
IiInput current Vi nom, Io nom 1 7.5 4.3 2.6 A
Pi 0 No-load input power Vi min – Vi max 2.5 2.5 2.5 W
Pi inh Idle input power unit inhibited 1.5 1.5 1.5
RiInput resistance TC = 25 °C 65 100 70 mΩ
RNTC NTC resistance 2 no NTC no NTC no NTC
CiInput capacitance 832 1040 300 370 1200 1500 µ F
Vi RFI Conducted input RFI EN 55022 A A B
Radiated input RFI Vi nom, Io nom AAA
Vi abs Input voltage limits 0 40 0 84 0 100 VDC
without damage
Table 2b: Input data
Input CS DS ES LS Unit
Characteristics Conditions min typ max min typ max min typ max min typ max
ViOperating input voltage Io = 0 – Io nom 28 140 44 220 67 385 88 372 VDC
TC min – TC max 8542644VAC
Vi nom Nominal input voltage 60 110 220 310 VDC
IiInput current Vi nom, Io nom 1 2.1 1.1 0.55 0.37 A
Pi 0 No-load input power Vi min – Vi max 2.5 2.5 2.5 2.5 W
Pi inh Idle input power unit inhibited 1.5 1.5 1.5 4.5
RiInput resistance TC = 25 °C 150 170 180 480 mΩ
RNTC NTC resistance 2 1000 2000 4000 4000
CiInput capacitance 960 1200 264 330 216 270 216 270 µ F
Vi RFI Conducted input RFI EN 55022 B B B B
Radiated input RFI Vi nom, Io nom BAAA
Vi abs Input voltage limits 0 154 0 400 3 0 400 –400 400 VDC
without damage
1Both outputs of double-output models are loaded with Io nom.
2Valid for -7 versions without option E (-9 versions exclude NTC). This is the nominal value at 25 °C and applies to cold converters at initial
switch-on cycle. Subsequent switch-on/off cycles increase the inrush current peak value.
3For 1 s max.
4Nominal frequency range is 50 – 60 Hz. Operating frequency range is 47 – 440 Hz (440 Hz for 115 V mains). For frequencies ≥63 Hz,
refer to Installation Instructions.
S Series Data Sheet
100 Watt DC-DC and AC-DC Converters
BCD20004-G Rev AC, 29-Apr-2015 Page 6 of 31
MELCHER
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Input Transient Protection
A suppressor diode or a VDR (depending upon the input
voltage range) together with the input fuse and a symmetrical
input filter form an effective protection against high input
transient voltages which, typically occur in most installations,
but especially in battery-driven mobile applications.
Standard nominal battery voltages are: 12, 24, 36, 48, 60, 72,
1 10, and 220 V. Railway batteries are specified with a tolerance
of –30% to +25%, with short excursions up to ±40%.
In certain applications, additional surges according to RIA 12
are specified. The power supply must not switch off during
these surges, and since their energy can practically not be
absorbed, an extremely wide input range is required. The ES
input range for 110 V batteries has been designed and tested
to meet this requirement.
Input Fuse
A fuse mounted inside the converter protects against severe
defects. This fuse may not fully protect the converter, when the
input voltage exceeds 200 VDC. In applications, where the
converters operate at source voltages above 200 VDC, an
external fuse or a circuit breaker at system level should be
installed.
Table 3: Fuse Specification
Model Fuse type Reference Rating
AS fast-blow 1 Littlefuse 314 30 A, 125 V
BS fast-blow 1 Littlefuse 314 25 A, 125 V
FS slow-blow 2 Schurter SPT 16 A, 250 V
CS slow-blow 2 Schurter SPT 12.5 A, 250 V
DS slow-blow 2 Schurter SPT 8 A, 250 V
ES slow-blow 2 Schurter SPT 4 A, 250 V
LS slow-blow 2 Schurter SPT 4 A, 250 V
1Fuse size 6.3 × 32 mm 2 Fuse size 5 × 20 mm
Fig. 3
Typical inrush current versus time at Vi max, Rext = 0
Ω
.
For AS, BS, FS, and for application-related values, use the
formula in this section to get realistic results.
Inrush Current Limitation
The FS, CS, DS, ES, LS models incorporate an NTC resistor in
the input circuitry, which at initial turn-on reduces the peak
inrush current value by a factor of 5 – 10 such protecting
connectors and switching devices from damage. Subsequent
switch-on cycles within short periods will cause an increase of
the peak inrush current value due to the warming-up of the NTC
resistor. See also Option E.
The inrush current peak value (initial switch-on cycle) can be
determined by following calculation; see also fig. 3:
Vi source
Iinr p = ––––––––––––––––
(Rs ext + Ri + RNTC)
Fig. 4
Equivalent input ciruit
Rs ext RiRNTC
Iinr p
Vi source
+Ci int
05109a
Static Input Current Characteristic
Reverse Polarity
The converters (except LS models) are not protected against
reverse polarity at the input to avoid unwanted power losses. In
general, only the input fuse will trip.
LS models are fully protected by the built-in bridge rectifier.
Fig. 5
Typical input current versus relative input voltage
234561
1
2
5
10
FS
CS
ES
LS (DC input)
Vi
Vi min
Ii (A)
DS
20
0.5
AS
BS
04037a
123 t [ms]
0
50
100
I
i inr
[A]
150
CS
ES, LS
DS
04038a
0.1
S Series Data Sheet
100 Watt DC-DC and AC-DC Converters
BCD20004-G Rev AC, 29-Apr-2015 Page 7 of 31
MELCHER
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Fig. 6a
Typical hold-up time th versus relative DC input voltage.
Vi/Vi min. DC-DC converters require an external series diode
in the input path, if other loads are connected to the same
input supply lines.
Input Under-/Overvoltage Lockout
If the input voltage remains below approx. 0.8 Vi min or exceeds
approx. 1.1 Vi max, an internally generated inhibit signal
disables the output(s). When checking this function, the
absolute maximum input voltage Vi abs should be observed.
Between Vi min and the undervoltage lock-out level the output
voltage may be below the value defined in table Electrical
Output data.
Hold-Up Time
Fig. 6b
Typical hold-up time th versus relative AC input voltage (LS
models)
234561
0.30
1
Vi
––––
–
Vi min
th [ms]
10
100
DS
CS
ES
FS
AS BS
04041a
2341
2V
i
______
_
V
i min
t
h
[ms]
10
100
04049a
S Series Data Sheet
100 Watt DC-DC and AC-DC Converters
BCD20004-G Rev AC, 29-Apr-2015 Page 8 of 31
MELCHER
The Power Partners.
Electrical Output Data
General Conditions:
– TA = 25 °C, unless TC is specified.
– Pin 18 (i) connected to pin 14 (S– or Vo1–), R input not connected, Vo adjusted to Vo nom (option P),
– Sense line pins 12 (S+) and 14 (S –) connected to pins 4 (Vo1+) and 8 (Vo1–), respectively.
Table 5: Output data of single-output models
Model AS – LS1001 AS – LS1301/17405AS – LS1501 AS – LS1601 Unit
Nom. output voltage 5.1 V 12 V / 12.84 V515 V 24 V
Characteristics Conditions min typ max min typ max min typ max min typ max
VoOutput voltage Vi nom, Io nom 5.07 5.13 11.93512.075 14.91 15.09 23.86 24.14 V
Vo BR Overvoltage protection 6.0
15.2/17.5
519.6 28.5
(suppressor diode)7
Io nom Output current nom. 1Vi min – Vi max 16 8/7.556.5 4.2 A
TC min – TC max
IoL Output current limit Vi min – Vi max 16.2 8.2/7.756.7 4.4
voOutput Low f requency8Vi nom, Io nom 5 555 mV
pp
noise 3
Switching frequ.
BW = 20 MHz 10 5 5 5
Total incl. spikes
50 50 60 90
∆Vo u Static line regulation Vi min – Vi max ±15 ±20 ±25 ±30 mV
with respect to Vi nom Io nom
∆Vo I Static load regulation10 Vi nom –20 –25 –30 –40
(0.1 – 1) Io nom
vo d Dynamic Voltage Vi nom ±100 ±100 ±100 ±100
load deviation 6 Io nom ↔ 1/2 Io nom
t d regulat.3 Recovery time60.4 0.5 0.5 0.5 ms
αvo Temperature coefficient TC min – TCmax ±0.02 ±0.02 ±0.02 ±0.02 %/K
of output voltage 4 Io nom
1If the output voltages are increased above Vo nom through R-input control, option P setting, remote sensing or option T, the output currents
should be reduced accordingly so that Po nom is not exceeded.
2See Output voltage regulation
3Measured according to IEC/EN 61204 with a probe according to annex A
4For battery charger applications, a defined negative temperature coefficient can be provided by using a temperature sensor (see
Accessories), but we recommend choosing the special battery charger models.
5Especially designed for battery charging using the temperature sensor (see Accessories). Vo is set to 12.84 V ±1% (R-input open)
6See Dynamic load regulation
7Breakdown voltage of the incorporated suppressor diode (1 mA; 10 mA for 5 V output). Exceeding Vo BR is dangerous for the
suppressor diode.
8LS models only (twice the input frequency)
S Series Data Sheet
100 Watt DC-DC and AC-DC Converters
BCD20004-G Rev AC, 29-Apr-2015 Page 9 of 31
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1Breakdown voltage of the
incorporated suppressor diodes
(1 mA). Exceeding Vo BR is
dangerous for the suppressor
diodes.
2If the output voltages are
increased above Vo nom via R-
input control, option P setting,
remote sensing, or option T, the
output currents should be
reduced accordingly, so that
Po nom is not exceeded.
3Measured according to IEC/EN
61204 with a probe annex A
4See Dynamic Load Regulation
5See Output Voltage Regulation
of Double-Output Models
6For battery charger
applications, a defined negative
temperature coefficient can be
provided by using a
temperature sensor; see
Accessories.
7Especially designed for battery
charging using the battery
temperature sensor; see
Accessories.
Vo1 is set to 25.68 V ±1% (R-
input open-circuit).
8LS models only (twice the
input frequency)
9Both outputs connected in
series.
Table 6b: Output data of double-output models. General conditions as per table 5.
Model AS – LS2660 / 2740 7 Unit
Nom. output voltage 2 ××
××
× 24 V / 2 ××
××
× 25.68 V7
Output 1 Output 2
Characteristics Conditions min typ max min typ max
VoOutput voltage
V
i nom
, I
o1 nom
, I
o2 nom
23.86 7 24.14 7 23.64 7 24.36 7 V
Vo BR1Overvoltage protection 28.5/ 347 28.5/347
(suppressor diode)
Io nom Output current nom. 2 Vi min – Vi max 2/1.8 7 2/1.8 7 A
TC min – TC max
IoL Output current limit 9 Vi min – Vi max
2.2/2.0 7 2.2/2.0 7
voOutput Low frequency8Vi nom, Io nom 5 5 mVpp
noise 3 Switching freq. BW = 20 MHz 5 5
Total incl. spikes 50 50
∆Vo u Static line regulation Vi min – Vi max ±30 5mV
with respect to Vi nom Io nom
∆Vo I Static load regulation Vi nom –60 5
(0.1 – 1) Io nom
vo d Dynamic Voltage Vi nom ±100 ±150
load deviation 4 Io1 nom ↔ 1/2 Io1 nom
t d regulat.
Recovery time4
1/2 Io2 nom 0.2 ms
αvo Temperature coefficient TC min – TC max ±0.02 %/K
of output voltage 6 Io nom
Table 6a: Output data of double-output models. General conditions as per table 5.
Model AS – LS2320 AS – LS2540 Unit
Nom. output voltage 2 ××
××
× 12 V 2 ××
××
× 15 V
Output 1 Output 2 Output 1 Output 2
Characteristics Conditions min typ max min typ max min typ max min typ max
VoOutput voltage
V
i nom
, I
o1 nom
, I
o2 nom
11.93 12.07 11.82 12.18 14.91 15.09 14.78 15.22 V
Vo BR 1Overvoltage protection 15.2 15.2 19.6 19.6
(suppressor diode)
Io nom Output current nom. 2Vi min – Vi max 4 4 3.2 3.2 A
TC min – TC max
IoL Output current limit 9 Vi min – Vi max 4.2 4.2 3.4 3.4
voOutput L ow frequency8Vi nom, Io nom 55 5 5mV
pp
noise 3 Switching freq. BW = 20 MHz 5555
Total incl. spikes 40 40 50 50
∆Vo u Static line regulation Vi min – Vi max ±20 5±25 5mV
with respect to Vi nom Io nom
∆Vo I Static load regulation Vi nom –40 5–50 5
(0.1 – 1) Io nom
vo d Dynamic Voltage Vi nom, ±100 ±150 ±100 ±150
load deviation 4 Io1 nom ↔ 1/2 Io1 nom
t d regulat.
Recovery ti me4
1/2 Io2 nom 0.2 0.2 ms
αvo Temperature coefficient TC min – TC max ±0.02 ±0.02 %/K
of output voltage 6 Io nom
S Series Data Sheet
100 Watt DC-DC and AC-DC Converters
BCD20004-G Rev AC, 29-Apr-2015 Page 10 of 31
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V
o
/V
o nom
0.98
0.5
0
0.5 1.0
I
o1
I
oL
I
o
/I
o nom
05098a
0
0.2
0.4
0.6
0.8
50 60 70 80 90 100
Io/Io nom
TA [°C]
1.0
Forced
cooling
05089a
TA min
TC max
Convection cooling
Fig. 7
Output current derating versus temperature for -7 and -9
models.
Thermal Considerations
If a converter is located in free, quasi-stationary air (convection
cooling) at the indicated maximum ambient temperature TA max
(see table Temperature specifications) and is operated at its
nominal input voltage and output power, the temperature
measured at the Measuring point of case temperature TC (see
Mechanical Data) will approach the indicated value TC max after
the warm-up phase. However , the relationship between TA and
TC depends heavily upon the conditions of operation and
integration into a system. The thermal conditions are
influenced by input voltage, output current, airflow, and
temperature of surrounding components and surfaces. TA max
is therefore, contrary to TC max, an indicative value only.
Caution: The installer must ensure that under all operating
conditions TC remains within the limits stated in the table
Temperature specifications.
Notes: Sufficient forced cooling or an additional heat sink allows
TA to be higher than 71 °C (e.g., 85 °C), as long as TC max is not
exceeded. Details are specified in fig.7
applied overvoltages. Overload at any of the outputs will cause
a shut-down of all outputs. A red LED indicates the overload
condition.
Note: Vo BR is specified in Electrical Output Data. If this volt age is
exceeded, the suppressor diode generates losses and may
become a short circuit.
Parallel and Series Connection
Single- or double-output models with equal output voltage can
be connected in parallel using option T (current sharing). If the T
pins are interconnected, all converters share the output current
equally.
Single-output models and/or main and second outputs of
double-output models can be connected in series with any
other (similar) output.
Notes:
– Parallel connection of double-output models should always
include both, main and second output to maintain good
regulation.
– Not more than 5 converters should be connected in parallel.
– Series connection of second outputs without involving their main
outputs should be avoided, as regulation may be poor.
– The maximum output current is limited by the output with the
lowest current limitation, if several outputs are connected in
series.
Fig. 8
Output characteristic Vo versus Io (single-output models or
double-output models with parallel-connected outputs).
Thermal Protection
A temperature sensor generates an internal inhibit signal,
which disables the outputs, when the case temperature
exceeds TC max. The outputs automatically recover, when the
temperature drops below this limit.
Continuous operation under simultaneous extreme worst-case
conditions of the following three parameters should be
avoided: Minimum input voltage, maximum output power, and
maximum temperature.
Output Protection
Each output is protected against overvoltages, which could
occur due to a failure of the internal control circuit. Voltage
suppressor diodes (which under worst case condition may
become a short circuit) provide the required protection. The
suppressor diodes are not designed to withstand externally
S Series Data Sheet
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Fig. 10
Models with 2 outputs 12 V: V
o2
versus I
o2
with various I
o1
(typ)
Fig. 11
Models with 2 outputs 15 V: V
o2
versus I
o2
with various I
o1
(typ)
Fig. 12
Models with 2 outputs 24 V: V
o2
versus I
o2
with various I
o1
(typ)
Fig. 9
Typical dynamic load regulation of Vo.
Output Voltage Regulation
figure 9 applies to single-output or double-output models with
parallel-connected outputs.
For independant configuration, output 1 is under normal
conditions regulated to Vo nom, irrespective of the output
currents.
Vo2 depends upon the load distribution. If both outputs are
loaded with more than 10% of Io nom, the deviation of Vo2
remains within ± 5% of Vo1. Fig. 10 to 12 show the regulation
depending on load distribution.
Two outputs of a double-output model connected in parallel
behave like the output of a single-output model.
Note: If output 2 is not used, connect it in parallel with output 1!
This ensures good regulation and efficiency.
V
od
V
od
t
d
t
d
V
o
±1% V
o
±1%
t
t
≥ 10 µs ≥ 10 µs
V
o
0
0.5
1
I
o
/I
o nom
05102c
01234 5
Io2 [A]
11.25
11.50
11.75
12.0
12.25
12.50
12.75
Vo2 [V]
Io1 = 4.0 A
Io1 = 3.1 A
Io1 = 2.2 A
Io1 = 1.3 A
Io1 = 0.4 A
05136a
Vo2 [V]
Io2 [A]
0123
23
23.5
24
24.5
25
25.5
26
Io1 = 2.00 A
Io1 = 1.55 A
Io1 = 1.10 A
Io1 = 0.65 A
Io1 = 0.20 A
05138a
0123 4
I
o2
[A]
14.25
14.5
14.75
15.0
15.25
15.5
15.75
16.0
V
o2
[V]
I
o1
= 3.2 A
I
o1
= 2.5 A
I
o1
= 1.7 A
I
o1
= 1.0 A
I
o1
= 0.3 A
05137a
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R
Vext
Vi+
Vi–
Rext
R'ext
14
16
14
+
S+/Vo1+
S–/Vo1–
R
12
05074a
Vi–
Vi+
–
16
S–/Vo1–
0t
t
0
Inhibit
1
0.1
1
V
o
/V
o nom
t
r
t
f
06001
1.6
0.8
0
–0.8
Vinh [V]
Iinh [mA]
–40 0
–20 20 40
2.0
1.2
0.4
–
0.4
Vinh = 0.8 V
Vo = on Vo = off
Vinh = 2.4 V
06032a
Auxiliary Functions
Inhibit for Remote On/Off
The outputs may be enabled or disabled by means of a logic
signal (TTL, CMOS, etc.) applied between the inhibit input i
(pin 18) and pin 14 (S– or Vo1–). In systems with several
converters, this feature can be used to control the activation
sequence of the converters. If the inhibit function is not
required, connect the inhibit pin 18 with pin 14!
Note: If pin 18 is not connected, the output is disabled.
Fig. 13
Definition of Vinh and Iinh.
Table 7: Inhibit characteristics
Characteristic Conditions min typ max Unit
Vinh Inhibit Vo = on Vi min – Vi max –50 0.8 V
voltage Vo = off 2.4 50
Iinh Inhibit current Vinh = 0 –400 µA
trRise time 30 m s
tfFall time depending on Io
Fig. 15
Output response as a function of inhibit control
Fig. 14
Typical inhibit current Iinh versus inhibit voltage Vinh
Table 7: Maximum voltage compensation allowed using
sense lines
Output Total voltage difference Voltage difference
voltage between sense lines and between
their respective outputs Vo– and S–
5.1 V <0.5 V <0.25 V
12 V, 15 V, 24 V <1.0 V <0.25 V
Sense Lines (Single-Output Models)
Important: Sense lines must always be connected! Incorrectly
connected sense lines may activate the overvoltage protection
resulting in a permanent short-circuit of the output.
This feature allows for compensation of voltage drops across
the connector contacts and if necessary, across the load lines.
We recommend connecting the sense lines directly at the
female connector.
To ensure correct operation, both sense lines (S+, S–) should
be connected to their respective power outputs (Vo+ and Vo–),
and the voltage difference between any sense line and its
respective power output (as measured on the connector)
should not exceed the following values:
Programmable Output Voltage (R-Function)
As a standard feature, the converters offer an adjustable
output voltage, identified by letter R in the type designation.
The control input R (pin 16) accepts either a control voltage
Vext or a resistor Rext to adjust the desired output voltage.
When input R is not connected, the output voltage is set to Vo
nom.
a)Adjustment by means of an external control voltage Vext
between pin 16 (R) and pin 14 (S–):
The control voltage range is 0 – 2.75 VDC and allows for an
adjustment in the range of approximately 0 – 110% of Vo nom.
Vo
Vext ≈ –––––– • 2.5 V
Vo nom
Fig. 16
Output voltage control for single-output models
S–/Vo1–
i
Vo+
I
inh
V
inh
06031b
14
18
Input
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Table 8a: Rext for Vo < Vo nom; approximate values (Vi nom, Io nom, series E 96 resistors); R'ext = not fitted
Vo nom = 5.1 V Vo nom = 12 V Vo nom = 15 V Vo nom = 24 V
Vo [V] Rext [kΩΩ
ΩΩ
Ω]Vo [V] 1 Rext [kΩΩ
ΩΩ
Ω]Vo [V] 1 Rext [kΩΩ
ΩΩ
Ω]Vo [V] 1 Rext [kΩΩ
ΩΩ
Ω]
0.5 0.432 2 4 0.806 2 4 0.619 4 8 0.806
1.0 0.976 3 6 1.33 4 8 1.47 6 12 1.33
1.5 1.65 4 8 2 6 12 2.67 8 16 2.0
2.0 2.61 5 10 2.87 8 16 4.53 10 20 2.87
2.5 3.83 6 12 4.02 9 18 6.04 12 24 4.02
3.0 5.76 7 14 5.62 10 20 8.06 14 28 5.62
3.5 8.66 8 16 8.06 11 22 11 16 32 8.06
4.0 14.7 9 18 12.1 12 24 16.2 18 36 12.1
4.5 30.1 10 20 20 13 26 26.1 20 40 20
5.0 200 11 22 42.2 14 28 56.2 22 44 44.2
Table 8b: R’ext for Vo > Vo nom; approximate values (Vi nom, Io nom, series E 96 resistors); Rext = not fitted
Vo nom = 5.1 V Vo nom = 12 V Vo nom = 15 V Vo nom = 24 V
Vo [V] R'ext [kΩΩ
ΩΩ
Ω]Vo [V] 1 R'ext [kΩΩ
ΩΩ
Ω]Vo [V] 1 R'ext [kΩΩ
ΩΩ
Ω]Vo [V] 1 R'ext [kΩΩ
ΩΩ
Ω]
5.15 432 12.1 24.2 1820 15.2 30.4 1500 24.25 48.5 3320
5.2 215 12.2 24.4 931 15.4 30.8 768 24.5 49.0 1690
5.25 147 12.3 24.6 619 15.6 31.2 523 24.75 49.5 1130
5.3 110 12.4 24.8 475 15.8 31.6 392 25.0 50.0 845
5.35 88.7 12.5 25.0 383 16.0 32.0 316 25.25 50.5 698
5.4 75 12.6 25.2 316 16.2 32.4 267 25.5 51.0 590
5.45 64.9 12.7 25.4 274 16.4 32.8 232 25.75 51.5 511
5.5 57.6 12.8 25.6 243 16.5 33.0 221 26.0 52.0 442
13.0 26.0 196 26.25 52.5 402
13.2 26.4 169 26.4 52.8 383
1First column: Vo or Vo1; second column: double-output models with series-connected outputs
R'
ext
R
ext
14
16
Vo1–
Vo1+
R
Vo2–
Vo2–
Vo2+
Vo2+
12
10
8
6
4
+
–
V
o1
24 V
30 V
48 V
C
o
06004a
Fig. 17
Double-output models:
Wiring of the R-input for output voltages 24 V, 30 V, or 48 V
with both outputs in series. A ceramic capacitor (Co) across
the load reduces ripple and spikes.
b) Adjustment by means of an external resistor:
Depending upon the value of the required output voltage,
the resistor shall be connected
either: Between pin 16 and pin 14 to achieve an output
voltage adjustment range of approximately 0 – 100% of Vo nom.
or: Between pin 16 and pin 12 to achieve an output voltage
adjustment range of 100 – 110% of Vo nom.
Warnings:
–Vext shall never exceed 2.75 VDC.
– The value of R'ext shall never be less than the lowest value as
indicated in table R'ext (for V0 > V0 nom) to avoid damage to the
converter!
Notes:
– The R-Function excludes option P (output voltage adjustment by
potentiometer).
If the output voltages are increased above Vo nom via R-input
control, option P setting, remote sensing, or option T, the output
currents should be reduced, so that Po nom is not exceeded.
– With double-output models, the second output follows the
voltage of the controlled main output.
– In case of parallel connection the output voltages should be
individually set within a tolerance of 1 – 2%.
Test Jacks
Test jacks (pin diameter 2 mm) for measuring the main output
voltage Vo or Vo1 are located at the front of the converter. The
positive test jack is protected by a series resistor (see:
Functional Description, block diagrams).
The voltage measured at the test jacks is slightly lower than
the value at the output terminals.
S Series Data Sheet
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2.10
2.15
2.20
2.25
2.30
2.35
2.40
2.45
Cell voltage [V]
–20 –10 0 10 20 30 40 50 °C
06139b
V
C
= 2.27 V, –3 mV/K V
C
= 2.27 V, –3.5 mV/K
V
C
= 2.23 V, –3 mV/K V
C
= 2.23 V, –3.5 mV/K
V
o safe
Display Status of LEDs
Battery Charging /Temperature Sensor
All converters with an R-input are suitable for battery charger
applications, but we recommend choosing the models
especially designed for this application DK/LK1740 pr DK/
LK2740; see Model Selection.
For optimal battery charging and life expectancy of the battery
an external temperature sensor can be connected to the R-
input. The sensor is mounted as close as possible to the
battery and adjusts the output voltage accoring to the battery
temperature.
Depending upon cell voltage and the temperature coef ficient of
the battery, different sensor types are available, see
Accessories.
Fig. 20
Trickle charge voltage versus temperature for defined
temperature coefficient. Vo nom is the output voltage with open
R-input.
Fig. 19
Connection of a temperature sensor
Fig. 18
LED indicators
LEDs "OK", "i" and "Io L
" status versus input voltage
Conditions: Io ≤ Io nom, TC ≤ TC max, Vinh ≤ 0.8 V
Vi uv = undervoltage lock-out, Vi ov = overvoltage lock-out
LEDs "OK" and "Io L" status versus output current
Conditions: Vi min – Vi max, TC ≤ TC max, Vinh ≤ 0.8 V
LED "i" versus case temperature
Conditions: Vi min – Vi max, Io ≤ Io nom, Vinh ≤ 0.8 V
LED "i " versus Vinh
Conditions: Vi min – Vi max , Io ≤ Io nom, TC ≤ TC max
V
o1
> 0.95 to 0.98V
o1 adj
V
i max
V
i ov
V
i min
V
i uv
V
i
V
i abs
OK
i
V
o1
> 0.95 to 0.98V
o1 adj
I
o nom
I
oL
I
o
OK
I
o L
V
o1
< 0.95 to 0.98V
o1 adj
T
C
i
T
C max
T
PTC threshold
V
i inh
i
+50 V
+0.8 V +2.4 V
-50 V
V
inh threshold
I
o L
LED off LED on
LED Status undefined
06002_011106
Power
supply Load
–
+
Input Vo–
R
Temperature sensor
ϑ
03099d
Battery
Vo+
+
S Series Data Sheet
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Table 9: Electromagnetic immunity (type tests)
Phenomenon Standard Level Coupling Value Waveform Source Test In Perf.
mode 1applied imped. procedure oper. crit.2
Supply related RI A 123A4+i/–i 3.5 VBat 2/20/2 ms 0.2 Ω1 positive surge yes A
surge B 1.5 VBat 0.1/1/0.1 s
Direct transients C + i/ –i , –i /c 960 Vp10/100 µs 5 Ω5 pos and 5 neg. yes B
D31800 Vp5/50 µs
E 3600 Vp0.5/5 µs 100 Ω
F 4800 Vp0.1/1 µs
G38400 Vp0.05/0.1 µs
Indirect couples H +o/c, – o/c 1800 Vp5/50 µs
transients J 3600 Vp0.5/5 µs
K 4800 Vp0.1/1 µs
L 8400 Vp0.05/0.1 µs
Electrostatic IEC/EN 45contact discharge ±8000 Vp1/50 ns 330 Ω10 positive and yes A
discharge 61000-4-2 air discharge ±15000 Vp150 pF 10 negative
(to case) discharges
Electromagnetic IEC/EN x6antenna 20 V/m AM 80% /1 kHz n.a. 80 – 1000 MHz yes A
field 61000-4-3 7antenna 20 V/m AM 80% /1 kHz n.a. 800 – 1000 MHz yes A
10 V/m 1400 – 2100 MHz
5 V/m 2100 – 2500 MHz
3 antenna 10 V/m 50 % duty cycle, n.a. 900 ±5 MHz yes A
200 Hz rep. rate
Electrical fast I EC/E N 38capacitive, o/c ±2000 Vpbursts of 5/50 ns 50 Ω60 s positive yes A
transients/burst 61000-4-4 4± i/c, +i/–i ±4000 Vp2.5/5 kHz over 60 s negative
direct 15 ms; burst transients per
period: 300 ms coupling mode
Surges IEC/EN 39±i/c ±2000 Vp1.2/50 µs 12 Ω5 pos. and 5 neg. yes A3
61000-4-5 +i/–i ±1000 Vp2 Ωsurges per
coupling mode
Conducted IEC/EN 310 i, o, signal wires 10 VAC AM 8 0% 150 Ω0.15 – 80 MHz yes A
disturbances 61000-4-6 ( 140 dBµV) 1 kHz
1i = input, o = output, c = case
2A = normal operation, no deviation from specs.; B = temporary loss of function or deviation from specs possible
3RIA 12 covers or exceeds IEC 60571-1 and EN 50155:1995. Surge D corresponds to EN 50155:2001, waveform A; surge G corresponds
to EN 50155:2001, waveform B
4Only met with extended input voltage range of CS (for 48 V battery) and ES (for 110 V battery) types. Such CS models are available on
customer's request. Standard DS models (110 V battery) will not be damaged, but overvoltage lockout will occur during the surge.
5Exceeds EN 50121-3-2:2006 table 9.3 and EN 50121-4:2006 table 1.4.
6Corresponds to EN 50121-3-2:2006 table 9.1 and exceeds EN 50121-4:2006 table 1.1. Valid for version V104 or higher.
7Corresponds to EN 50121-3-2:2006 table 9.2 and EN 50121-4:2006 table 1.2 (compliance with digital mobile phones).
8Corresponds to EN 50121-3-2:2006 table 7.2 and EN 50121-4:2006 table 2.2.
9Covers or exceeds EN 50121-3-2:2006 table 7.3 and EN 50121-4:2006 table 2.3.
10 Corresponds to EN 50121-3-2:2006 table 7.1 and EN 50121-4:2006 table 3.1 (radio frequency common mode).
Electromagnetic Compatibility (EMC)
A metal oxide VDR together with the input fuse and an input
filter form an effective protection against high input transient
Electromagnetic Immunity
voltages, which typically occur in most installations. The
converters have been successfully tested to the following
specifications:
S Series Data Sheet
100 Watt DC-DC and AC-DC Converters
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dBµV/m
10
20
30
40
0
50
TÜV-Divina, Testdistance 10 m, 2006-10-01
CS1601-7R Ui=110 V, Uo=12 V Io= 8 A
JM061
30 50 100 200 500 1000 MHz
EN 55022 B
CS1601-7R, Peak Vi+, Conducted 0,15 ÷ 30 MHz, Divina, 2006-10-01
0
10
20
30
40
50
60
70
80
0.2 0.5 1 2 5 10 20 MHz
EN 55022 B
dBµV
0
10
20
30
40
50
60
70
80
dBµV LS1301-7R, Peak Vi+, Conducted 0,15 ÷ 30 MHz, Divina, 2006-11-01
EN 55022 B
0.2 0.5 1 2 5 10 20 MHz
30 50 100 200 500 1000 MHz
dBµV/m
EN 55011 A
TÜV-Divina, QP, 2006-11-01
Testdistance 10 m, LS1301-7R, Uo=12 V Io= 8 A
JM057
10
20
30
40
0
50
Fig. 21a
Typical conducted emissions (peak) at the positive input
according to EN 55011/22, measured at Vi nom and Io nom
(CS1601-7R)
Fig. 21b
Typical conducted emissions (peak) at the positive input
according to EN 55011/22, measured at Vi nom and Io nom
(LS1301-7R).
Fig. 22b
Radiated emissions according to EN 55011/22, antenna
10 m distance, measured at Vi nom and Io nom (LS1301-7R)
Electromagnetic Emissions
Fig. 22a
Radiated emissions according to EN 55011/22, antenna
10 m distance, measured at Vi nom and Io nom (CS1601-7R)
S Series Data Sheet
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Immunity to Environment al Conditions
Table 10: Mechanical and climatic stress
Test Method Standard Test Conditions Status
Cab Damp heat IEC/EN 60068-2-78 Temperature: 40 ±2 °C Converter not
steady state MIL-STD-810D sect. 507.2 Relative humidity: 93 +2/-3 % operating
Duration: 56 days
Kb Salt mist, cyclic IEC/EN 60068-2-52 Concentration: 5 % (30 °C) for 2 h Converter not
(sodium chloride Storage: 40 °C, 93% rel. humidity operating
NaCl solution) Duration: 3 cycles of 22 h
Fc Vibration IEC/EN 60068-2-6 Acceleration amplitude: 0.35 mm (10 – 60 Hz) Converter
(sinusoidal) MIL-STD-810D sect. 514.3 5 gn = 49 m/s2 (60 – 2000 Hz) operating
Frequency (1 Oct / min): 10 – 2000 Hz
Test duration: 7.5 h (2.5 h each axis)
Fh Random vibration IEC/EN 60068-2-64 Acceleratio n spectral density: 0.0 5 gn2/Hz Converter
broad band Frequency band: 8 – 500 Hz operating
(digital control) Acceleration magnitude: 4.9 gn rms
Test duration: 1.5 h (0.5 h each axis)
Eb Bump IEC/EN 60068-2-29 Acceleration amplitude: 25 gn = 245 m/s 2Converter
(half-sinusoidal) MIL-STD-810D sect. 516.3 Bump duration: 6 ms operating
Number of bumps: 6000 (1000 each direction)
Ea Shock IEC/EN 60068-2-27 Acceleration amplitude: 50 g n = 490 m/s2Converter
(half-sinusoidal) MIL-STD-810D sect. 516.3 Bump duration: 11 ms operating
Number of bumps: 18 (3 each direction)
-- Shock EN 50155:2007 sect. 12.2.11, Acceleration amplitude: 5.1 gnConverter
EN 61373 sect. 10, Bump duration: 30 ms operating
class B, body mounted1Number of bumps: 18 (3 in each direction)
-- Simulated long life EN 50155:2007 sect. 12.2.11, Acceleration spectral density: 0.02 g n2/Hz Converter
testing at EN 61373 sect. 8 and 9, Frequency band: 5 – 150 Hz operating
increased random class B, body mounted1Acceleration magnitude: 0.8 gn rms
vibration levels Test duration: 15 h (5 h in each axis)
1Body mounted = chassis of a railway coach
Table 11: Temperature specifications, values given are for an air pressure of 800 – 1200 hPa (800 – 1200 mbar)
Temperature -5 2-6 2-7 (standard) -9 (option) Unit
Characteristics Conditions min max min max min max min max
TAAmbient temperature Converter –25 50 –25 60 –25 71 –40 71 °C
TCCase temperature 1operating – 25 85 1–25 90 1–25 95 1–40 95 1
TSStorage temperature
Not operating
–40 100 –40 100 –40 100 –55 100
1Overtemperature lockout at TC > 95 °C
2Customer-specific models
Temperatures
Table 12: MTBF calculated according to MIL-HDBK 217F
Values at specified Model Ground benign Ground fixed Ground mobile Unit
case temperature 40 °C 40 °C 70 °C 50 °C
MTBF1AS – LS 500 000 150 000 80 000 50 000 h
Device hours2AS – LS 500 000
1Calculated according to MIL-HDBK-217F
2Statistic values, based on an average of 4300 working hours per year, over 3 years in general field use.
Reliability and Device Hours
S Series Data Sheet
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111 (3U)
168.5
60
4.5
19.7
9.5
29.951.5
30.3
20.3
12.1
10.3
7.0
3.27
7 TE 5 TE
Test jacks
Option P (Vo)
Option D (Vti)
LED OK (green)
LED i (red)
LED IoL (red)
Option D (Vto)
25.9
Front plate Main face Back plate
(171.0 to 171.9)
50
11.8
= Ø 3.5
= Ø 4.1
(+/–)
152
100
M4
55
8
152
8
09004f
Measuring point of
case temperature TC
d
= Ø 4.1
= Ø 3.5
Screw holes of the
frontplate
∅5 x 90°
∅2.8
0.2
Mechanical Data
Dimensions in mm. The converters are designed to be inserted
into a 19" rack, 160 mm long, according to IEC 60297-3.
Notes:
–d ≥ 15 mm, recommended minimum distance to
next part in order to ensure proper air circulation
at full output power.
– free air location: the converter should be mounted
with fins in a vertical position to achieve maximum
airflow through the heat sink.
Fig. 23
Aluminum case S02 with heat sink;
black finish (EP powder coated);
weight approx. 1.25 kg
European
Projection
S Series Data Sheet
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6.5
11.2
13
140
17.3 133.4 ±0.2 30
168
547.2
38.5
127 6.5
11.8
11027
European
Projection
111 (3U)
17.3 133.4
168
101
5
47.2
158
5
M 4
5
Measuring point of
case temperature TC
50
(171.0 ... 171.9)
3.27
7 TE 4 TE
09003b
38.5
11.8
Fig. 24
Option B1: Aluminum case S02 with small cooling plate; black finish (EP powder coated).
Suitable for mounting with access from the backside.
Total weight approx. 1.2 kg.
Fig. 25
Option B: Aluminum case S02 with large cooling plate; black finish (EP powder coated).
Suitable for front mounting.
Total weight approx. 1.3 kg
Note: Long case with option B2, elongated by 60 mm for 220 mm
rack depth, is available on request. (No LEDs, no test jacks.)
S Series Data Sheet
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Fig. 26
View of the connector (male contacts)
Safety and Inst allation Instructions
Connector Pin Allocation
The connector pin allocation table defines the electrical
potentials and the physical pin positions on the H15 connector.
The protective earth is connected by a leading pin (no. 24),
ensuring that it makes contact with the female connector first.
Installation Instructions
Note: These converters have no power factor correction (PFC).
The LS4000/5000 models are intended to replace the LS1000 and
LS2000 converters in order to comply with IEC/EN 61000-3-2.
The converters are components, intended exclusively for
inclusion within other equipment by an industrial assembly
operation or by professional installers. Installation must strictly
follow the national safety regulations in compliance with the
enclosure, mounting, creepage, clearance, casualty, markings,
and segregation requirements of the end-use application.
Connection to the system shall be made via the female
connector H15; see Accessories. Other installation methods
may not meet the safety requirements.
Pin no. 24 ( ) is connected with the case. For safety reasons it
is essential to connect this pin reliably to protective earth.
The input pins 30/32 (Vi– or L ) are connected via a built-in
fuse, which is designed to protect in the case of a converter
failure. An additional external fuse, suitable for the application,
might be necessary in the wiring to the other input 26/28 (Vi+
or N ) or even to pins 30/32, particularly if:
• Local requirements demand an individual fuse in each
source line
• Phase and neutral of the AC mains are not defined or cannot
be assigned to the corresponding terminals.
• Neutral and earth impedance is high or undefined.
Notes:
– If the inhibit function is not used, pin no. 18 (i) should be
connected with pin no. 14 to enable the output(s).
– Do not open the converter, or warranty will be invalidated.
– Due to high current values, the converters provide two internally
parallel contacts for certain paths (pins 4/6, 8/10, 26/28 and 30/
32). It is recommended to connect both female connector pins of
each path in order to keep the voltage drop low and avoid
excessive connector currents.
– If the second output of double-output models is not used,
connect it parallel with the main output.
Make sure that there is sufficient airflow available for
convection cooling and verifiy it by measuring the case
temperature TC, when the converter is installed and operated in
the end-use application; see Thermal Considerations.
Ensure that a converter failure (e.g., an internal short-circuit)
does not result in a hazardous condition.
Standards and Approvals
The converters are safety-approved to UL 60950-1, CSA
60950-1, IEC 60950-1 and EN 60950-1 2nd Edition.
The converters correspond to Class I equipment and have
been evaluated for:
• Building-in
• Basic insulation between input and case based on 250 VAC,
and double or reinforced insulation between input and
output(s)
• Functional insulation between outputs
432
Type H15
Fixtures for connector
retention clips V
(see Accessories)
10090a
Table 13: H15 connector pin allocation
Pin Connector type H15
No. single-output models double-output models
4 Vo+ Pos. output 1 Vo2+ Pos. output 2
6 Vo+ Vo2+
8 Vo– Neg. output 1 Vo2– Neg. output 2
10 Vo– Vo2–
12 S+ Pos. sense Vo1+ Pos. output 1
14 S– Neg. sense Vo1– Neg. output 1
16 R 1 Control of VoR 1 Control of Vo1
18 i Inhibit i Inhibit
20 D 3 Save data D 3Safe data
V 3 ACFAIL
22 T 5Current sharing T 5Current sharing
242Protective earth Protective earth
26 Vi+ N 4Pos. input Vi+ N 4Pos. input
28 Neutral line 4Neutral line 4
30 Vi– L 4Neg. input Vi– L 4Neg. input
32 Phase line 4Phase line 4
1Not connected, if option P is fitted.
2Leading pin (pre-connecting)
3Option D excludes option V and vice versa. Pin 20 is not
connected, unless option D or V is fitted.
4LS models
5Only connected, if option T is fitted.
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• Overvoltage category II
• Pollution degree 2 environment
• Max. altitude: 2000 m
• The converters fulfill the requirements of a fire enclosure.
The converters are subject to manufacturing surveillance
in accordance with the above mentioned standards and ISO
9001:2008. A CB-scheme is available.
Railway Applications and Fire Protection
The converters have been designed by observing the railway
standards EN 50155, EN 50121-3-2, and EN 50121-4. All
boards are coated with a protective lacquer.
The converters with version V108 (or later) comply with NF-F16
(I2/F1). They also comply with EN 45545-1, EN 45545-2 (2013),
if installed in a technical compartment or cabinet.
Protection Degree and Cleaning Liquids
Condition: Female connector fitted to the converter.
• IP 30: All models except those with option P, and except
those with option D or V including a potentiometer.
• IP 20: All models fitted with option P, or with option D or V
with potentiometer.
In order to avoid damage, any penetration of cleaning fluids
has to be prevented, since the power supplies are not
hermetically sealed.
Isolation and Protective Earth
The electric strength test is performed in the factory as routine
test according to EN 50514 and IEC/EN 60950 and should not
be repeated in the field. Power-One will not honor any warranty
claims resulting from electric strength field tests. The
resistance of the earth connection to the case (<0.1 Ω) is
tested as well.
Leakage Currents
Leakage currents flow due to internal leakage capacitances and
Y-capacitors. The current values are proportional to the supply
voltage and are specified in the table below.
Table 14: Isolation
Characteristic Input to case Output(s) to Output 1 to Unit
and output(s) case output 2
Electric Factory test >1 s 2.8 1 1.4 0.15 kVDC
strength AC test voltage equivalent 2.0 1 1.0 0.1 kVAC
test to factory test
Insulation resistance at 500 VDC >300 >300 >100 2 MΩ
Creepage distances ≥3.2 3 -- -- mm
1According to IEC/EN 60950, subassemblies connecting input to output are pre-tested with 5.6 kVDC or 4 kVAC.
2Tested at 150 VDC
3Input to outputs: 6.4 mm
LS Models Operated at Greater than 63 Hz
Above 63 Hz, the earth leakage current may exceed 3.5 mA,
the maximum value allowed in IEC 60950. Frequencies ≥350
Hz are only permitted with Vi ≤200 VAC.
The built-in Y-caps are approved for ≤100 Hz. Safety approvals
and CB scheme cover only 50 – 60 Hz.
Table 15: Earth leakage currents for LS models
Characteristic Class I Unit
Max. leakage Permissible accord. to IEC/EN 60950 3.5 m A
current Typ. value at 264 V, 50 Hz 1.43
S Series Data Sheet
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AC-DC
front
end
DC-DC
con-
verter
Mains Battery SELV
Earth connection
+
–
10044a
≤150 VAC or VDC for AK, BK
≤250 VAC or VDC for CK, DK, EK, FK, LK
Fuse
Fuse
≤150 VAC or VDC for AK, BK
≤250 VAC or VDC for CK, DK, EK, FK, LK
+
Safety of Operator-Accessible Output Circuits
If the output circuit of a DC-DC converter is operator-
accessible, it shall be an SELV circuit according to the
standard IEC 60950-1.
The following table shows some possible installation
configurations, compliance with which causes the output
circuit of the converter to be an SELV circuit according to IEC
60950-1 up to a configured output voltage (sum of nominal
voltages if in series or +/– configuration) of 36 V.
However, it is the sole responsibility of the installer to assure
the compliance with the rapplicable safety regulations.
Table 16: Safety concept leading to an SELV output circuit
Conditions Front end DC-DC converter Result
Nominal Minimum required grade Nominal DC Minimum required Types Measures to achieve the Safety status
supply of insulation, to be pro- output voltage safety status of the specified safety status of of the DC-DC
voltage vided by the AC-DC front from the front end front end output the output circuit converter
end, including mains circuit output circuit
supplied battery charger
Mains Functional (i.e. there is ≤100 V (The Primary circuit AS Double or reinforced SELV circuit
≤150 V AC no need for electrical nominal voltage BS insulation, based on
insulation between the between any input the mains voltage and 2
mains supply voltage pin and earth can (provided by the DC-DC
and the DC-DC converter be up to 150 V AC converter) and earthed
input voltage) or DC) case 3
Mains ≤400 V (The CS
≤250 V AC nominal voltage DS
between any input ES
pin and earth can FS
be up to 250 V A C
or 400 V DC)
Basic ≤400 V Unearthed AS Supplementary insulation,
hazardous voltage BS based on 250 V AC and
secodary circuit CS double or reinforced
DS insulation 2 (provided by
ES DC-DC converter) and
FS earthed case 3.
Earthed Double or reinforced
hazardous voltage insulation 2 (provided by
secondary circuit the DC-DC converter)
earthed case 3
Double or reinforced ≤60 V SELV circuit Functional insulation
(provided by the DC-DC
converter) 4
≤120 V TNV-3 circuit Basic insulation (provided
by the DC-DC converter) 4
1The front end output voltage should match the specified input voltage range of the DC-DC converter.
2Based on the maximum nominal output voltage from the front end.
3The earth connection has to be provided by the installer according to the relevant safety standard, e.g. IEC/EN 60950-1.
4Earthing of the case is recommended, but not mandatory.
Fig. 27
Schematic safety concept.
Use earth connections as per the table below.
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Table 17: Safety concept leading to an SELV output circuit
Conditions AC-DC converter Installation Result
Nominal voltage Grade of insulation Measures to achieve the resulting Safety status of the AC-DC
between input and output safety status of the output circuit converter output circuit
provided by the AC-DC converter
Mains Double or reinforced Earthed case1 and installation SELV circuit
≤250 VAC according to the applicable standards
1 The earth connection has to be provided by the installer according to the relevant safety standards, e.g. IEC/EN 60950.
If the output circuit of an AC-DC converter is operator-
accessible, it shall be an SELV circuit accord. to IEC 60950-1.
The following table shows some possible installation
configurations, compliance with which causes the output
circuit of LS models to be SELV according to IEC 60950-1 up
to a configured output voltage (sum of nominal voltages if in
series or +/– configuration) of 36 V.
If the LS converter is used as DC-DC converter, refer to the
previous section.
AC-DC
con-
verter
Mains SELV
Earth connection
+
–
~
~
10021a
Fuse
Fuse
Fig. 28
Schematic safety concept. Use earth connection as per table
17. Use fuses if required by the application; see also
Installation Instructions.
Description of Options
Table 18: Survey of options
Option Function of option Characteristic
-7 Extended operational ambient temperature range TA = –25 to 71 °C
E Electronic inrush current limitation circuitry Active inrush current limitation
P2Potentiometer for fine adjustment of output voltage Adjustment range +10/–60% of Vo nom, excludes R input
D1Input and/or output undervoltage monitoring circuitry Safe data signal output (D0 – DD)
V1Input and/or output undervoltage monitoring circuitry ACFAIL signal according to VME specifications (V0, V2, V3)
T Current sharing Interconnect T-pins for parallel connection (max 5 converters)
B, B1, B2 Cooling plate (160 or 220 mm long) Replaces the standard heat sink, allowing direct chassis-mounting
G RoHS-compliant for all 6 substances
1Option D excludes option V and vice versa; option V only for 5.1 V outputs.
2Option P is not available for battery charger models.
-7 Temperature Range
Option -7 designates converters with an operational ambient
temperature range of –25 to 71 °C. Not for new designs.
E Inrush Current Limitation
CS/DS/ES/FS/LS models may be supplemented by an
electronic circuit (option E) replacing the standard built-in NTC
S Series Data Sheet
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15
Ii [A]
10
5
0
–5
–10
–15
020 40 60 80
t [ms]
tinr
Capacitor Ci
fully charged
Normal operation
(FET fully conducting)
20
10065a
resistor) in order to achieve an enhanced inrush current
limiting function. Option E is not available with AS/BS models,
but mandatory for all CS/ DS/ES/FS/LS models with option -9.
Fig. 29
Block diagram of option E
Current limiting resistance Rv = RS + Ri = 15
Ω
The figure below shows two consecutive peaks of the inrush
current, the first one is caused by Vi/Rv and the second one by
the rising current across the FET. The shape of the curve
depends on model, but the tables below show the higher of
both peaks.
CS models fitted with option E and option D6 (input voltage
Input Filter
Control
Converter
FET
Ci
Ri
RS
JM060
LS models
+
monitor) meet the standard ETS 300132-2 for 48 VDC
supplies. Option D6 is necessary to disable the converter at low
input voltage, such avoiding an excessive input current.
Connect output D (pin 20) with inhibit (pin 18).
Option D6 should be adjustded with the potentiometer to a
threshold of 36 – 40.5 V for 48 V batteries and to 44 – 50 V for
60 V batteries. Refer also to the description of option D.
Note: Subsequent switch-on cycles at start-up are limited to max.
10 cycles during the first 20 seconds (cold converter) and then to
max. 1 cycle every 8 s.
LS models powered by 230 VAC/ 50 Hz exhibit an inrush
current as per the fig. below, when switched on at the peak of
Vi. In this case, the inrush current Iinr p is 21.7 A and its duration
tinr is 5 ms. This is the worst case.
If the LS converter is switched on in a different moment, Iinr p is
much lower, but tinr rises up to 10 ms.
P Potentiometer
A potentiometer provides an output voltage adjustment range
of +10/– 60% of Vo nom. It is accessible through a hole in the
front cover . Option P is not available for battery charger models
and is not recommended for converters connected in parallel.
Option P excludes the R-function. With double-output models,
both outputs are influenced by the potentiometer (doubling the
voltage, if the outputs are connected in series).
Note: If the output voltages are increased above Vo nom via R input
control, option P setting, remote sensing, or option T, the output
Fig. 31
Inrush current for LS models with option E (AC supply)
Vi = 230 VAC, fi = 50 Hz, Po = Po nom
Table 19a: Inrush current at Vi nom (DC supply) and Io nom
Characteristics FS CS DS E S LS Unit
Vi nom Input voltage 50 60 110 220 310 V
Iinr p Peak inrush current 7.5 6.5 7.4 14.6 21 A
tinr Inrush current duration 20 25 14 16 16 ms
Table 19b: Inrush current at Vi max (DC supply) and Io nom
Characteristics FS CS DS E S LS Unit
Vi nom Input voltage 100 140 220 385 372 V
Iinr p Peak inrush current 10 9 14.5 25.7 24.8 A
tinr Inrush current duration 26 30 14 12 16 ms
Iinr [A]
Vi/Rv
tinr
t [ms]
Normal operation
(FET fully conducting)
0
0
Ii = Pi/Vi
Capacitor Ci
fully charged
11039a
Fig. 30
Inrush current with option E (DC supply)
2 different wafe shapes depending on model
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Fig. 34
Parallel connection of double-output models with the outputs
connected in series, using option T.
The signal at the T pins is referenced to Vo1–.
Vo+/Vo1+
S–/Vo1–
D
V
D
I
D
R
p
Input
11006a
Self-conducting
junction FET
20
14
Fig. 33
Parallel connection of single-output models using option T
with the sense lines connected at the load
T Current Sharing
This option ensures that the output currents are approximately
shared between the parallel-connected converters, hence
increasing system reliability. To use this facility, simply
interconnect the T pins of all converters and make sure that the
reference for the T signal, pin 14 (S– or Vo1–), are also
connected together. The load lines should have equal length
and cross section to ensure equal voltage drops.
Not more than 5 converters should be connected in parallel. The
R pins should be left open-circuit. If not, the output voltages must
be individually adjusted prior to paralleling within 1 to 2% or the
R pins should be connected together.
Note: Parallel connection of converters with option P is not recom-
mended.
Fig.32
Example of poor wiring for parallel connection (unequal
length of load lines)
Vo+
Vo–
Vo+
Vo–
Load
Vo+
Vo–
11003a
Load
1
1
1
2
2
S+
Vo+
Vo–
S–
T
S+
Vo+
Vo–
S–
T
1
Max. 5 converters in parallel connection
1 Lead lines should have equal length and cross
section, and should run in the same cable loom.
2 Diodes recommended in redundant operation only
11036b
Converter
Converter
Load
Max. 5 converters in parallel connection
+–
Power bus
Converter
Vo2–
Vo2+
Vo1–
Vo1+
T
Converter
Vo2–
Vo2+
Vo1–
Vo1+
T
11037b
D Undervoltage Monitor
The input and/or output undervoltage monitor operates
independently of the built-in input undervoltage lockout circuit.
A logic "low" signal (output with self-conducting JFET) or "high"
signal (NPN open-collector output) is generated at the D output
(pin 20), when one of the monitored voltages drops below the
preselected threshold level Vt. This signal is referenced to S–/
Vo1–. The D output recovers, when the monitored voltages
exceed Vt + V
h. The threshold levels Vti and Vto are either
adjusted by a potentiometer, accessible through a hole in the
front cover, or adjusted in the factory to a fixed value specified
by the customer.
Option D exists in various versions D0 – DD, as shown in table
20.
JFET output (D0 – D4):
Pin D is internally connected via the drain-source path of a
JFET (self-conducting type) to the negative potential of output
1. VD ≤ 0.4 V (logic low) corresponds to a monitored voltage
Fig. 35
Option D0 – D4: JFET output, ID ≤ 2.5 mA
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Vo+/Vo1+
S–/Vo1–
D
V
D
I
D
R
p
Input
11007a
NPN open
collector
20
14
level (Vi and/or Vo1) <Vt. The current ID through the JFET
should not exceed 2.5 mA. The JFET is protected by a 0.5 W
Zener diode of 8.2 V against external overvoltages.
NPN output (D5 – DD):
Pin D is internally connected via the collector-emitter path of a
NPN transistor to the negative potential of output 1. VD < 0.4 V
Table 22: NPN output (D5 – DD)
Vb, Vo1 status D output, VD
Vb or Vo1 < Vthigh, H, ID ≤ 25 µA at VD = 40 V
Vb and Vo1 > Vt + Vhlow, L, VD ≤ 0.4 V at ID = 20 mA
Table 21: JFET output (D0 -- D4)
Vb, Vo1 status D output, VD
Vb or Vo1 < Vtlow, L, VD ≤ 0.4 V at ID = 2.5 mA
Vb and Vo1 > Vt + Vhhigh, H, ID ≤ 25 µA at VD = 5.25 V
Fig. 36
Option D5 – DD: NPN output, Vo ≤40, ID ≤ 2.5 mA
(logic low) corresponds to a monitored voltage level (Vi and/or
Vo1) > Vt + Vh. The current ID through the open collector should
not exceed 20 mA. The NPN output is not protected against
external overvoltages. VD should not exceed 40 V.
Threshold tolerances and hysteresis:
If Vi is monitored, the internal input voltage after the input filter is
measured. Consequently this voltage dif fers from the voltage at
the connector pins by the voltage drop ∆Vti across the input
filter. The threshold levels of the D0 and D9 options are factory
adjusted at nominal output current Io nom and TA = 25 °C. The
value of ∆Vti depends upon input voltage range (CK, DK, ..),
threshold level Vt, temperature, and input current. The input
current is a function of the input voltage and the output power.
Fig. 37
Definition of Vti, ∆Vt i and ∆Vhi (JFET output)
∆Vti Vhi
VD low
VD
VD high
Vi
P
o
= P
o nom
P
o
= 0
P
o
= 0
Vti
P
o
= P
o nom
11021a
Table 20: Undervoltage monitoring functions
Output type Monitoring Minimum adjustment range Typ. hysteresis Vho [% of Vt] Number of
JFET NPN ViVo or Vo1 of threshold level Vtfor Vt min – Vt max potentio-
Vti Vto Vhi Vho meters
D1 D5 no yes -- 3.5 V – Vo BR 1-- 2.5 – 0.6 V 1
D2 D6 yes no Vi min – Vi max 1-- 3.4 – 0.4 V -- 1
D3 D7 yes yes Vi min – Vi max 1(0.95 – 0.985 Vo) 2 3.4 – 0.4 V " 0 " 1
D4 D8 no yes -- (0.95 – 0.985 Vo) 2 -- "0" --
D05D95no yes -- 3.5 V – Vo BR V 3 -- 2.5 – 0.6 V --
yes no Vi min – Vi max 3 4 -- 3.4 – 0.4 V --
yes yes Vi min – Vi max 3 4 3.5 V – Vo BR V3 4 3.4 – 0.4 V 2.5 – 0.6 V
yes yes Vi min – Vi max 3 4 (0.95 – 0.985 Vo) 2 3.4 – 0.4 V " 0 "
-- DD yes yes Vi min – Vi max 13.5 V – Vo BR V 1 3.4 – 0.4 V 2.5 – 0.6 V 2
1Threshold level adjustable by potentiometer; see Electrical Output Data for Vo BR.
2Fixed value. Tracking if Vo/Vo1 is adjusted via R-input, option P, or sense lines.
3The threshold level permanently adjusted according to customer specification ±2% at 25 °C. Any value within the specified range is
basically possible, but causes a special type designation in addition to the standard option designations (D0/D9). See Electrical Output
Data for Vo BR.
4Adjustment at Io nom.
5Customer-specific part number
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Fig. 38
Relationship between Vi, Vo, VD, Vo/Vo nom versus time
Table 23: D-output logic signals
Version of D Vi < Vt or Vo < VtVi > Vt + Vh or Vo > VtConfiguration
D1, D2, D3, D4, D0 low high JFET
D5, D6, D7, D8, D9, DD high low NP N
0
1
0.95
0
V
i
[VDC]
0
t
t
t
t
low min4
t
low min4
t
high min
t
h1
V
ti
+V
hi
V
ti
Input voltage failure Switch-on cycle Input voltage sag Switch-on cycle and subsequent
input voltage failure
V
D high
V
D low
V
D
0
JFET
NPN
t
V
o1
V
o1 nom
V
D high
V
D low
V
D
t
low min4
t
h1
0
0
V
D high
V
D low
V
D
0
JFET
NPN
V
o1
V
D high
V
D low
V
D
t
low min4
V
to
3
Output voltage failure
0
I
D high
I
D low
I
D
t
0
I
D high
I
D low
I
D
t
t
t
t
3
2
33 33
V
o1 nom
V
to
+V
ho
Input voltage monitoring
Output voltage monitoring
11008a
1 Hold-up time see Electrical Input Data
2 With output voltage monitoring, hold-up time th = 0
3 The signal remains high, if the D output is connected
to an external source
4
tlo
w min = 100 – 170 ms, typ. 130 ms
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V ACFAIL signal (VME)
Available for converters with Vo nom = 5.1 V only.
This option defines an undervoltage monitoring circuit for the
input or for the input and main output voltage ( 5.1 V) similar to
option D and generates an ACFAIL signal (V signal), which
conforms to the VME standard.
The low state level of the ACFAIL signal is specified at a sink
current of IV ≤ 48 mA to VV ≤ 0.6 V (open-collector output of an
NPN transistor). The pull-up resistor feeding the open-collector
output should be placed on the VME back plane.
After the ACFAIL signal has gone low, the VME standard
requires a hold-up time th of at least 4 ms, before the 5.1 V
output drops to 4.875 V, when the output is fully loaded. This
hold-up time th is provided by the internal input capacitance Ci;
see tab. Input Data. Consequently the working input voltage
and the threshold level Vti should be adequately above Vi min of
the converter, so that enough energy is remaining in the input
capacitance. If Vi is below the required level, an external hold-
up capacitor (Ci ext) should be added; refer to these formulas:
2 • Po • (th + 0.3 ms) • 100
Vti = –––––––––––––––––––––––– + Vi min2
Ci min • η
2 • Po • (th + 0.3 ms) • 100
Ci ext = –––––––––––––––––––––– – Ci min
η • (Vti 2 – Vi min2)
where as:
Ci min = internal input capacitance [mF]; see table 2
Ci ext = external input capacitance [mF]
Po= output power [W]
η= efficiency [%]
th= hold-up time [ms]
Vi min = minimum input voltage [V] 1
Vti = threshold level [V]
1Vi min see Electrical Input Data. For output voltages Vo > Vo nom,
Vi min increases proportionally to Vo/Vo nom.
Note: Option V2 and V3 can be adjusted by the potentiometer to a
threshold level between Vi min and Vi max. A decoupling diode should
be connected in series with the input of AS – FS converters to
avoid the input capacitance being discharged through other loads
connected to the same source voltage.
Option V operates independently of the built-in input under-
voltage lockout circuit. A logic "low" signal is generated at pin
20, as soon as one of the monitored voltages drops below the
preselected threshold level Vt. The return for this signal is
S–. The V output recovers, when the monitored voltages
exceed Vt + Vh. The threshold level Vti is either adjustable by a
potentiometer, accessible through a hole in the front cover, or
adjusted in the factory to a determined customer-specific
value. Refer to table 25.
V output (V0, V2, V3):
Pin V is internally connected to the open collector of an NPN
transistor. The emitter is connected to S–. VV ≤ 0.6 V (logic
low) corresponds to a monitored voltage level (Vi and/or Vo)
<Vt. IV should not exceed 50 mA. The V output is not protected
against external overvoltages: VV should not exceed 60 V.
Threshold tolerances and hysteresis:
If Vi is monitored, the internal input voltage is measured after
the input filter. Consequently this voltage differs from the
Table 25: Undervoltage monitor functions
Option Monitoring Minimum adjustment range Typical hysteresis Vh [% of Vt]
of threshold level Vtfor Vt min – Vt max
ViVo1 Vti Vto Vhi Vho
V2 yes no Vi min – Vi max 1 -- 3.4 - 0.4 --
V3 yes yes Vi min – Vi max 1 0.95 - 0.985 Vo1 2 3.4 - 0.4 " 0"
V0 yes no Vi min – Vi max 3 4 -- 3.4 - 0.4 --
yes yes Vi min – Vi max 3 4 0.95 - 0.985 Vo1 2 3.4 - 0.4 "0"
1Threshold level adjustable by potentiometer. 2 Fixed value between 95% and 98.5% of Vo1 (tracking). 3 Adjusted at Io nom.
4Fixed value, resistor-adjusted (±2% at 25°C) accord. to customer's specification; individual type number is determined by Power-One.
Table 24: Option V: Factory potentiometer setting of Vti with resulting hold-up time
Model AS BS FS CS DS E S LS Unit
Vt i 9.5 19.5 39 39 61 97 120 VDC
th0.1 0.1 3.4 1.1 1.1 2.7 4.2 ms
Table 26: NPN-output (V0, V2, V3)
Vi, Vo st atus V output, VV
Vi or Vo1 < Vtlow, L, VV ≤ 0.6 V at IV = 50 mA
Vi and Vo1 > Vt + Vhhigh, H, I V ≤ 25 µA at VV = 5.1 V
voltage at the connector pins by the voltage drop ∆Vti across
the input filter. The threshold level of option V0 is adjusted in
the factury at Io nom and TA = 25 °C. The value of ∆Vti depends
upon the input voltage range (AK, BK, etc.), threshold level Vt,
temperature, and input current. The input current is a function
of input voltage and output power.
S Series Data Sheet
100 Watt DC-DC and AC-DC Converters
BCD20004-G Rev AC, 29-Apr-2015 Page 29 of 31
MELCHER
The Power Partners.
3
5.1 V
4.875 V
0
Vi [VDC]
0
t
t
Vti + Vhi
Vti
Input voltage failure Switch-on cycle Input voltage sag Switch-on cycle and subsequent
input voltage failure
VV high
VV low
VV
0
V2
t
Vo
0
VV high
VV low
VV
0
V2
Vi
Vti
4
Output voltage failure
0
VV high
VV low
VV
3
Vti + Vhi
tlow min 2 tlow min 2
tlow min 2
33
4
4
VV high
VV low
VV
0
V3
t
3
tlow min 2
tlow min 2
33
th 1
2.0 V
th 1
4
3
4
tlow min 2
V3
5.1 V
4.875 V
0
Vo
2.0 V
Input voltage monitoring
Output voltage monitoring
11010a
t
t
t
t
∆V
ti
V
hi
V
V low
V
V
V
V high
V
i
P
o
= P
o nom
P
o
= 0
P
o
= 0
V
ti
P
o
= P
o nom
11023a
Fig. 40
Output configuration of options V0, V2 and V3 Fig. 41
Definition of Vti,
∆
Vti and Vhi
1VME request: minimum 4 ms
2tlow min = 40 – 200 ms, typ 80 ms
3VV level not defined at Vo < 2.0 V
4The V signal drops simultaneously with Vo, if the pull-up
resistor RP is connected to Vo+; the V signal remains
high if RP is connected to an external source.
Fig. 39
Relationship between Vb, Vo, VD, Vo/Vo nom versus time
Vo+
S–
V
VV
IV
Rp
Input
11009a
NPN open
collector
20
14
S Series Data Sheet
100 Watt DC-DC and AC-DC Converters
BCD20004-G Rev AC, 29-Apr-2015 Page 30 of 31
MELCHER
The Power Partners.
Option B2 is for customer-specific models with elongated case
(for 220 mm DIN-rack depth).
G RoHS
RoHS-compliant for all six substances.
B, B1, B2 Cooling Plate
Where a cooling surface is available, we recommend the use
of a cooling plate instead of the standard heat sink. The
mounting system should ensure that the maximum case
temperature TC max is not exceeded. The cooling capacity is
calculated by (η see Model Selection):
(100% –
η)
PLoss = –––––––––– • Vo • Io
η
For the dimensions of the cooling plates, see Mechanical Data.
Fig. 44
Cage clamp adapter HZZ00144-G
Accessories
A variety of electrical and mechanical accessories are
available including:
– Front panels for 19" DIN-rack: Schroff or Intermas,
12 TE /3U; see fig. 40.
– Mating H15 connectors with screw, solder, faston, or press-
fit terminals, code key system and coding wedges
HZZ00202-G; see fig. 41.
– Pair of connector retention clips HZZ01209-G; see fig. 42
– Connector retention brackets HZZ01216-G; see fig. 43
– Cage clamp adapter HZZ00144-G; see fig. 44
Fig. 40
Different front panels
Fig. 41
Different mating connectors
Fig. 42
Connector retention clips to fasten the H15 connector to
the rear plate; see fig. 24. HZZ01209-G consists of 2 clips.
Fig. 43
Connector retention brackets HZZ01216-G (CRB-HKMS)
20 to 30 Ncm
S Series Data Sheet
100 Watt DC-DC and AC-DC Converters
BCD20004-G Rev AC, 29-Apr-2015 Page 31 of 31
MELCHER
The Power Partners.
NUCLEAR AND MEDICAL APPLICATIONS - These products are not designed or intended for use as critical components in life support systems,
equipment used in hazardous environments, or nuclear control systems.
TECHNICAL REVISIONS - The appearance of products, including safety agency certifications pictured on labels, may change depending on the
date manufactured. Specifications are subject to change without notice.
Copyright © 2015, Bel Power Solutions Inc. All rights reserved. ww w.belpowersolutions.com/power
Fig. 46
Chassis- or wall-mounting plate
HZZ01213-G (Mounting plate K02)
Fig. 47
DIN-rail mounting assembly HZZ00615-G (DMB-K/S)
– Different cable hoods for H15 connectors (fig. 45):
- HZZ00141-G, screw version
- HZZ00142-G, use with retention brackets HZZ01218-G
- HZZ00143-G, metallic version providing fire protection
– Chassis or wall-mounting plate K02 (HZZ01213-G) for
models with option B1. Mating connector (HZZ00107-G)
with screw terminals; see fig. 46
– DIN-rail mounting assembly HZZ0615-G (DMB-K/S); see
fig. 47
– Additional external input and output filters
– Different battery sensors S-KSMH... for using the converter
as a battery charger. Different cell characteristics can be
selected; see fig. 48, table 27, and Battery Charging/
Temperature Sensors.
For additional accessory product information, see the
accessory data sheets listed with each product series or
individual model at our web site:
www.belpowersolutions.com/power
Fig. 45
Different cable hoods
56 (2.2")L
L = 2 m (standard length)
other cable lengths on request
adhesive tape
26 (1.02")
9.8 (0.4")
09125a
European
Projection
Table 27: Battery temperature sensors
Battery Sensor Cell Cell temp. Cable
voltage type voltage
coefficient
length
nom. [V] [V] [mV/K] [m]
12 S-KSMH12-2.27-30-2 2.27 –3.0 2
12 S-KSMH12-2.27-35-2 2.27 –3.5 2
24 S-KSMH24-2.27-30-2 2.27 –3.0 2
24 S-KSMH24-2.27-35-2 2.27 –3.5 2
24 S-KSMH24-2.31-35-0 2.31 –3.5 4.5
24 S-KSMH24-2.31-35-2 2.31 –3.5 2
24 S-KSMH24-2.35-35-2 2.35 –3.5 2
48 S-KSMH48-2.27-30-2 2.27 –3.0 2
48 S-KSMH48-2-27-35-2 2.27 –3.5 2
Fig. 48
Battery temperature sensor
Note: Other temperature coefficients and cable lengths are
available on request.
