V48SC05013
65W DC/DC Power Modules
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P1
FEATURES
High efficiency : 91.5% @ 5V/13A
Size:
Without heat spreader:
33.0mm*22.8mm*9.5mm(1.30”*0.90”*0.37’’)
With heat spreader:
33.0mm*22.8mm*12.7mm(1.30’’*0.90’’*0.50’’)
Standard footprint
Industry standard pin out
Fixed frequency operation
Input UVLO
Hiccup output over current protection (OCP)
Hiccup output over voltage protection (OVP)
Auto recovery OTP
Monotonic startup into normal and pre-biased
loads
1500V isolation and basic insulation
No minimum load required
ISO 9001, TL 9000, ISO 14001, QS9000,
OHSAS18001 certified manufacturing facility
UL/cUL 60950-1 (US & Canada) recognized
Delphi Series V48SC, Sixteenth Brick
Family
DC/DC Power Modules:
36~75V in, 5V/13A out, 65W
The Delphi Module V48SC05013, sixteenth brick, 36~75V
input, single output, isolated DC/DC converter is the latest
offering from a world leader in power system and technology and
manufacturing ― Delta Electronics, Inc. This product provides up
to 65 watts of power in an industry standard footprint and pin out.
With creative design technology and optimization of component
placement, these converters possess outstanding electrical and
thermal performances, as well as extremely high reliability under
highly stressful operating conditions. The V48SC05013 offers
more than 91.5% high efficiency at 13A load.
APPLICATIONS
Telecom / Datacom
Wireless Networks
Optical Network Equipment
Server and Data Storage
Industrial / Testing Equipment
OPTIONS
Positive or negative ON/OFF logic
Heat spreader or open frame
SMD or through-hole pin
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TECHNICAL SPECIFICATIONS
TA=25°C, Natural convection, Vin=48Vdc, nominal Vout unless otherwise noted;
PARAMETER
V48SC05013
Min.
Typ.
Max.
Units
ABSOLUTE MAXIMUM RATINGS
Input Voltage
Continuous
36
75
Vdc
Transient
100
Vdc
Operating Ambient Temperature
-40
85
°C
Storage Temperature
-55
125
°C
Input/Output Isolation Voltage
1500
Vdc
INPUT CHARACTERISTICS
Operating Input Voltage
36
48
75
Vdc
Input Under-Voltage Lockout
Turn-On Voltage Threshold
32.0
34.0
36.0
Vdc
Turn-Off Voltage Threshold
30.0
32.0
34.0
Vdc
Lockout Hysteresis Voltage
2
Vdc
Maximum Input Current
2.4
A
No-Load Input Current
50
mA
Off Converter Input Current
10
mA
Inrush Current (I2t)
1
A2s
Input Reflected-Ripple Current
20
mA
Input Voltage Ripple Rejection
-50
dB
OUTPUT CHARACTERISTICS
Output Voltage Set Point
4.925
5.0
5.075
Vdc
Output Voltage Regulation
Over Load
±10
mV
Over Line
±10
mV
Over Temperature
±33
mV
Total Output Voltage Range
4.85
5.15
Vdc
Output Voltage Ripple and Noise
Peak-to-Peak
80
mV
RMS
30
mV
Operating Output Current Range
0
13
A
Output DC Current-Limit Inception
14.3
19.5
A
DYNAMIC CHARACTERISTICS
Output Voltage Current Transient
Positive Step Change in Output Current
100
mV
Negative Step Change in Output Current
100
mV
Settling Time (within 1% Vout nominal)
300
µs
Turn-On Transient
Start-Up Time, From On/Off Control
30
Ms
Start-Up Time, From Input
30
Ms
Maximum Output Capacitance
0
5000
µF
EFFICIENCY
100% Load
91.5
%
60% Load
91.0
%
ISOLATION CHARACTERISTICS
Input to Output
1500
Vdc
Isolation Resistance
10
MΩ
Isolation Capacitance
1000
pF
FEATURE CHARACTERISTICS
Switching Frequency
420
465
510
kHz
ON/OFF Control, Negative Remote On/Off logic
Logic Low (Module On)
0
0.8
V
Logic High (Module Off)
3.5
10
V
ON/OFF Current (for both remote on/off logic)
mA
Leakage Current (for both remote on/off logic)
uA
Output Voltage Trim Range
-20
10
%
Output Voltage Remote Sense Range
10
%
Output Over-Voltage Protection
115
150
%
GENERAL SPECIFICATIONS
MTBF
16.15
M hours
Weight(without heat spreader)
18.0
Grams
Weight(with heat spreader)
28.0
Grams
Over-Temperature Shutdown ( Without heat spreader)
135
°C
Over-Temperature Shutdown (With heat spreader)
118
°C
Over-Temperature Shutdown ( NTC resistor )
125
°C
Note: Please attach thermocouple on NTC resistor to test OTP function, the hot spots’ temperature is just for reference.
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ELECTRICAL CHARACTERISTICS CURVES
Figure 1: Efficiency vs. load current for 36V, 48V, and 75V
input voltage at 25°C.
Figure 2: Power dissipation vs. load current for 36V, 48V, and
75V input voltage at 25°C.
Figure 3: Full load input characteristics at room temperature.
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ELECTRICAL CHARACTERISTICS CURVES
For Negative Remote On/Off Logic
Figure 4: Turn-on transient at zero load current) (10ms/div).
Top Trace: Vout; 2V/div; Bottom Trace: ON/OFF input: 5V/div.
Figure 5: Turn-on transient at full load current (10 ms/div). Top
Trace: Vout: 2V/div; Bottom Trace: ON/OFF input: 5V/div.
For Input Voltage Start up
Figure 6: Turn-on transient at zero load current (10 ms/div).
Top Trace: Vout; 2V/div; Bottom Trace: input voltage: 30V/div.
Figure 7: Turn-on transient at full load current (10 ms/div). Top
Trace: Vout; 2V/div; Bottom Trace: input voltage: 30V/div.
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ELECTRICAL CHARACTERISTICS CURVES
Figure 8: Output voltage response to step-change in load
current (50%-75%-50% of full load; di/dt = 0.1A/µs).
Load cap: 10µF, tantalum capacitor and 1µF ceramic capacitor.
Top Trace: Vout; 100mV/div; Bottom Trace: output current:
5A/div, Time: 100us/div
Figure 9: Output voltage response to step-change in load
current (50%-75%-50% of full load; di/dt = 2.5A/µs).
Load cap: 10µF, tantalum capacitor and 1µF ceramic capacitor.
Top Trace: Vout; 200mV/div; Bottom Trace: output current:
5A/div, Time: 100us/div
Figure 10: Test set-up diagram showing measurement points
for Input Terminal Ripple Current and Input Reflected Ripple
Current.
Note: Measured input reflected-ripple current with a simulated
source Inductance (LTEST) of 12 μH. Capacitor Cs offset
possible battery impedance. Measure current as shown above.
Figure 11: Input Terminal Ripple Current, ic, at max output
current and nominal input voltage with 12µH source impedance
and 33µF electrolytic capacitor (100 mA/div
，
2us/div).
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ELECTRICAL CHARACTERISTICS CURVES
Figure 12: Input reflected ripple current, is, through a 12µH
source inductor at nominal input voltage and max load current
(10 mA/div
，
2us/div).
Figure 13: Output voltage noise and ripple measurement test
setup.
Figure 14: Output voltage ripple at nominal input voltage and
max load current (20 mV/div, 2us/div)
Load capacitance: 1µF ceramic capacitor and 10µF tantalum
capacitor. Bandwidth: 20 MHz.
Figure 15: Output voltage vs. load current showing typical
current limit curves and converter shutdown points.
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DESIGN CONSIDERATIONS
Input Source Impedance
The impedance of the input source connecting to the
DC/DC power modules will interact with the modules
and affect the stability. A low ac-impedance input source
is recommended. If the source inductance is more than
a few μH, we advise 100μF electrolytic capacitor (ESR <
0.7 Ω at 100 kHz) mounted close to the input of the
module to improve the stability.
Layout and EMC Considerations
Delta’s DC/DC power modules are designed to operate
in a wide variety of systems and applications. For design
assistance with EMC compliance and related PWB
layout issues, please contact Delta’s technical support
team. An external input filter module is available for
easier EMC compliance design. Below is the reference
design for an input filter tested with V48SC05013 to meet
class A in CISSPR 22.
Schematic and Components List
C1= 3.3uF/100 V
C2= 47uF/100 V
C3= 47uF/100 V
C4=C5=1nF/250Volt
T1=1mH, common choke，type P53910(Pulse)
Test Result:
At T = +25C , Vin = 48 V and full load
Green line is quasi peak mode;
Blue line is average mode.
EMI test positive line
EMI test negative line
Safety Considerations
The power module must be installed in compliance with
the spacing and separation requirements of the
end-user’s safety agency standard, i.e., UL60950-1,
CSA C22.2 NO. 60950-1 2nd and IEC 60950-1 2nd :
2005 and EN 60950-1 2nd: 2006+A11+A1: 2010, if the
system in which the power module is to be used must
meet safety agency requirements.
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FEATURES DESCRIPTIONS
Over-Current Protection
The modules include an internal output over-current
protection circuit, which will endure current limiting for an
unlimited duration during output overload. If the output
current exceeds the OCP set point, the modules will shut
down, and will try to restart after shutdown(hiccup mode).
If the overload condition still exists, the module will shut
down again. This restart trial will continue until the
overload condition is corrected.
Over-Voltage Protection
The modules include an internal output over-voltage
protection circuit, which monitors the voltage on the output
terminals. If this voltage exceeds the over-voltage set
point, the protection circuit will constrain the max duty
cycle to limit the output voltage, if the output voltage
continuously increases the modules will shut down, and
then restart after a hiccup-time (hiccup mode).
Over-Temperature Protection
The over-temperature protection consists of circuitry that
provides protection from thermal damage. If the
temperature exceeds the over-temperature threshold the
module will shut down.The module will restart after the
temperature is within specification.
Remote On/Off
The remote on/off feature on the module can be either
negative or positive logic. Negative logic turns the module
on during a logic low and off during a logic high. Positive
logic turns the modules on during a logic high and off
during a logic low.
Remote on/off can be controlled by an external switch
between the on/off terminal and the Vi (-) terminal. The
switch can be an open collector or open drain. For
negative logic if the remote on/off feature is not used,
please short the on/off pin to Vi (-). For positive logic if the
remote on/off feature is not used, please leave the on/off
pin to floating.
Figure 16: Remote on/off implementation
Basic insulation based on 75 Vdc input is provided
between the input and output of the module for the
purpose of applying insulation requirements when the
input to this DC-to-DC converter is identified as TNV-2 or
SELV. An additional evaluation is needed if the source is
other than TNV-2 or SELV.
When the input source is SELV circuit, the power module
meets SELV (safety extra-low voltage) requirements. If
the input source is a hazardous voltage which is greater
than 60 Vdc and less than or equal to 75 Vdc, for the
module’s output to meet SELV requirements, all of the
following must be met:
The input source must be insulated from the ac
mains by reinforced or double insulation.
The input terminals of the module are not operator
accessible.
A SELV reliability test is conducted on the system
where the module is used, in combination with the
module, to ensure that under a single fault,
hazardous voltage does not appear at the module’s
output.
When installed into a Class II equipment (without
grounding), spacing consideration should be given to
the end-use installation, as the spacing between the
module and mounting surface have not been evaluated.
The power module has extra-low voltage (ELV) outputs
when all inputs are ELV.
This power module is not internally fused. To achieve
optimum safety and system protection, an input line fuse
is highly recommended. The safety agencies require a
normal-blow fuse with 20A maximum rating to be
installed in the ungrounded lead. A lower rated fuse can
be used based on the maximum inrush transient energy
and maximum input current.
Soldering and Cleaning Considerations
Post solder cleaning is usually the final board assembly
process before the board or system undergoes electrical
testing. Inadequate cleaning and/or drying may lower the
reliability of a power module and severely affect the
finished circuit board assembly test. Adequate cleaning
and/or drying is especially important for un-encapsulated
and/or open frame type power modules. For assistance
on appropriate soldering and cleaning procedures,
please contact Delta’s technical support team.
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Output Voltage Adjustment (TRIM)
To increase or decrease the output voltage set point,
connect an external resistor between the TRIM pin and
the SENSE(+) or SENSE(-). The TRIM pin should be
left open if this feature is not used.
For trim down, the external resistor value required to
obtain a percentage of output voltage change △% is
defined as:
KdownRtrim 22.10
511
Ex. When Trim-down -20% (5.0V×0.8=4.0V)
KKdownRtrim 33.1522.10
20
511
For trim up, the external resistor value required to
obtain a percentage output voltage change △% is
defined as:
KupRtrim 22.10
511
1.225 ) (100 Vo11.5
Ex. When Trim-up +10% (5.0V×1.1=5.5V)
KupRtrim 1.16822.10
10
511
10225.1 )10100(0.511.5
The output voltage can be increased by both the remote
sense and the trim, however the maximum increase is
the larger of either the remote sense or the trim, not the
sum of both.
When using remote sense and trim, the output voltage
of the module is usually increased, which increases the
power output of the module with the same output
current.
Care should be taken to ensure that the maximum
output power of the module remains at or below the
maximum rated power.
THERMAL CONSIDERATIONS
Thermal management is an important part of the
system design. To ensure proper, reliable operation,
sufficient cooling of the power module is needed over
the entire temperature range of the module.
Convection cooling is usually the dominant mode of
heat transfer.
Hence, the choice of equipment to characterize the
thermal performance of the power module is a wind
tunnel.
Thermal Testing Setup
Delta’s DC/DC power modules are characterized in
heated vertical wind tunnels that simulate the thermal
environments encountered in most electronics
equipment. This type of equipment commonly uses
vertically mounted circuit cards in cabinet racks in
which the power modules are mounted.
The following figure shows the wind tunnel
characterization setup. The power module is mounted
on a test PWB and is vertically positioned within the
wind tunnel. The space between the neighboring PWB
and the top of the power module is constantly kept at
6.35mm (0.25’’).
AIR FLOW
MODULE
PWB
50.8(2.00")
AIR VELOCITY
AND AMBIENT
TEMPERATURE
SURED BELOW
THE MODULE
FANCING PWB
Note: Wind Tunnel Test Setup Figure Dimensions are in millimeters and (Inches)
Figure 17: Wind tunnel test setup
Thermal Derating
Heat can be removed by increasing airflow over the
module. To enhance system reliability, the power
module should always be operated below the
maximum operating temperature. If the temperature
exceeds the maximum module temperature, reliability
of the unit may be affected.
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THERMAL CURVES
(WITHOUT HEAT SPREADER)
NTC RESISTOR
HOT SPOT1
AIRFLOW
Figure 18: * Hot spot 1& NTC resistor temperature measured
points, the allowed maximum hot spot 1 temperature is defined
at 122
℃
0
2
4
6
8
10
12
14
25 30 35 40 45 50 55 60 65 70 75 80 85
Output Current (A)
Ambient Temperature (℃)
V48SC05013(Standard) Output Current vs. Ambient Temperature and Air Velocity
@Vin = 48V (Either Orientation)
Natural
Convection
100LFM
200LFM
300LFM
Figure 19: Output current vs. ambient temperature and air
velocity @Vin=48V(Either Orientation, without heat spreader)
THERMAL CURVES
(WITH HEAT SPREADER)
HOT SPOT2
AIRFLOW
Figure 20: * Hot spot 2 temperature measured point,the
allowed maximum hot spot 2 temperature is defined at 111
℃
0
2
4
6
8
10
12
14
25 30 35 40 45 50 55 60 65 70 75 80 85
Output Current (A)
Ambient Temperature (℃)
V48SC05013(Standard) Output Current vs. Ambient Temperature and Air Velocity
@Vin = 48V (Either Orientation,With Heatspreader)
Natural
Convection
100LFM
Figure 21: Output current vs. ambient temperature and air
velocity @Vin=48V(Either Orientation, with heat spreader)
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PICK AND PLACE LOCATION RECOMMENDED PAD LAYOUT (SMD)
SURFACE-MOUNT TAPE & REEL
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LEADED (Sn/Pb) PROCESS RECOMMEND TEMP. PROFILE(for SMD models)
Note: The temperature refers to the pin of V48SC, measured on the pin +Vout joint.
LEAD FREE (SAC) PROCESS RECOMMEND TEMP. PROFILE(for SMD models)
Temp.
Time
150℃
200℃
100~140 sec.
Time Limited 90 sec.
above 217℃
217℃
Preheat time
Ramp up
max. 3℃/sec.
Ramp down
max. 4℃/sec.
Peak Temp. 240 ~ 245 ℃
25℃
Note: The temperature refers to the pin of V48SC, measured on the pin +Vout joint.
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MECHANICAL DRAWING
For modules with through-hole pins and the optional heatspreader, they are intended for wave
soldering assembly onto system boards; please do not subject such modules through reflow
temperature profile.
Through-hole module with heat spreader
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Surface-mount module Through-hole module without heat spreader
Through hole Pin Specification:
Pins 1-3,5-7
1.00mm (0.040”) diameter
Pins 4 &8
2.1.50mm (0.059”) diameter
All pins are copper alloy with matte Tin(Pb free) plating over Nickel under plating
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PART NUMBERING SYSTEM
V
48
S
C
050
13
N
N
F
A
Form
Factor
Input
Voltage
Number of
Outputs
Product
Series
Output
Voltage
Output
Current
ON/OFF
Logic
Pin
Length
Option Code
V -
Sixteenth
Brick
48-
36V~75V
S – Single
C- Series
Number
050- 5.0V
13- 13A
N –Negative
K – 0.110’’
N - 0.145”
R - 0.170”
M - SMD pin
F - RoHS 6/6
(Lead Free)
Space - RoHS5/6
A – Standard Function
H– With Heatspreader
MODEL LIST
MODEL NAME
INPUT
OUTPUT
EFF @ 100% LOAD
V48SC05013NNFA
36V~75V
2.4A
5.0V
13A
91.5%
CONTACT: www.deltaww.com/dcdc
USA:
Telephone:
East Coast: 978-656-3993
West Coast: 510-668-5100
Fax: (978) 656 3964
Email: DCDC@delta-corp.com
Europe:
Phone: +31-20-655-0967
Fax: +31-20-655-0999
Email: DCDC@delta-es.com
Asia & the rest of world:
Telephone: +886 3 4526107
ext 6220~6224
Fax: +886 3 4513485
Email: DCDC@delta.com.tw
WARRANTY
Delta offers a two (2) year limited warranty. Complete warranty information is listed on our web site or is available
upon request from Delta.
Information furnished by Delta is believed to be accurate and reliable. However, no responsibility is assumed by
Delta for its use, nor for any infringements of patents or other rights of third parties, which may result from its use. No
license is granted by implication or otherwise under any patent or patent rights of Delta. Delta reserves the right to
revise these specifications
Mouser Electronics
Authorized Distributor
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V48SC05013NRFA