SYRS1 Series
9 - 36V Wide Input
Encapsulated Sixteenth Brick Converters
Datasheet SYRS1 Series 12-06-2016 1
Parameter
Symbol
Min
Max
Unit
Input Voltage (continuous)
Vi
-0.5
40
Vdc
Input Voltage ( < 100ms, operating)
Vi
-
50
Vdc
Input Voltage (continuous, non-operating)
Vi
-
50
Vdc
Storage Temperature
Tstg
-55
125
˚C
Absolute Maximum Ratings
Part Numbering System
SYR
S1
-
Family
Name:
Input
Voltage:
Output
Voltage:
Enabling
Logic:
Rated
Output
Current:
Pin
Length:
Electrical
Options:
Packaging Suffix
-
Operating
Temperature
*Grade (°C)
SYR
S1:9-36V
Unit:0.1V
050:5V
P:positive
N:
negative
Unit:A
012:
12A
K:0.110”
N:0.145”
R:
0.180”
0:latch off
2:auto-
restart
R: Potted, metal case
S:
Potted, metal shield,
flange
P: Potted, baseplate
F: Potted, flange
Custom
code
-
H: -40 to +100
M:
-55 to +100
Available Codes:
Output Voltage
3.3V
5V
6V
8V
12V
15V
Output Current
10A, 15A
8A, 12A
5A
4A, 7A
3A, 5A
2A, 4A
Excessive stresses over these absolute maximum ratings can
cause damage to the converter. Operation should be limited
to the conditions outlined under the Electrical Specifications.
* Operating temperature is the temperature measured at the center of the baseplate.
Features
● High efficiency and excellent thermal
performance
● No minimum load requirement
● Protection against input under-voltage,
output over-voltage/over-current/short
circuit, and over-temperature.
● Output remote sense
● Fixed frequency operation
● 2,250Vdc input to output isolation
● Encapsulated for harsh environment
● Flanged baseplate available
● Different temperature grades available
● Designed to meet IEC60950-1 2nd
edition
● Qualification/Screening satisfy: IPC-
9592, MIL-STD-810, MIL-STD-883
SYRS1 Series 9 – 36V Input Sixteenth Brick Converters
Datasheet SYRS1 Series 12-06-2016 2
Electrical Specifications
These specifications are valid over the converter’s full range of input voltage, resistive load, and
operating temperature unless noted otherwise.
Series Input Specifications
Parameter
Symbol
Min
Typical
Max
Unit
Input Voltage
Vi
9
18
36
Vdc
Input Turn-on Voltage Threshold
-
8.0
8.5
9.0
V
Input Turn-off Voltage Threshold
-
7.0
7.5
8.0
V
Series Output Specifications
Parameter
Symbol
Min
Typical
Max
Unit
Output Voltage Set Point Accuracy
(Vi = Typical Vin; Io = Io,max; Ta = 25°C)
-
-1.5
+1.5
%Vo
Output Voltage Set Point Accuracy (over all
conditions)
-
-3
+3
%Vo
Output Regulation:
Line Regulation ( full range input voltage, 1/2 full
load)
Load Regulation (full range load, Typical Vin)
Temperature (Ta = -40°C to 85 °C)
-
-
0.2
0.5
%Vo
-
-
0.2
0.5
%Vo
-
-
0.1
-
%Vo
Output Trim Range in % of Vo,typical
-
80
-
110
%
Series General Specifications
Parameter
Symbol
Min
Typical
Max
Unit
Remote Enable
Logic Low:
ION/OFF = 1.0mA
VON/OFF = 0.0V
Logic High: ION/OFF = 0.0μA
Leakage Current
VON/OFF
ION/OFF
VON/OFF
ION/OFF
0
-
3.5
-
-
-
-
-
1.2
1.0
15
50
V
mA
V
μA
Isolation Capacitance
-
-
1200
-
pF
Isolation Resistance
-
10
-
-
MΩ
Module Specific Specifications
3.3V/10A Module (SYRS1033x010xxx-x)
Parameter
Symbol
Min
Typical
Max
Unit
Input Current
Iin,Max
-
-
7
A
Quiescent Input Current (Typical Vin)
Iin,Qsnt
-
80
120
mA
Standby Input Current
Iin,Stdby
-
8
15
mA
Efficiency (Typical Vin; Io,max, TA = 25ºC)
η
-
90
-
%
Output Voltage Set Point
Vo
3.3
V
Output Over Current Protection Set Point / Io_max
Io,cli
105
-
160
%
Output Over Voltage Protection Set Point / Vo_typical
-
115
130
165
%
Output ripple frequency
-
280
300
320
kHz
Output Ripple and Noise Voltage
RMS
Peak-to-peak (5 Hz to 20 MHz bandwidth, Typical Vin)
-
50
mVrms
-
130
mVp-p
External Load Capacitance
-
-
-
10,000
μF
SYRS1 Series 9 – 36V Input Sixteenth Brick Converters
Datasheet SYRS1 Series 12-06-2016 3
3.3V/15A Module (SYRS1033x015xxx-x)
Parameter
Symbol
Min
Typical
Max
Unit
Input Current
Iin,Max
-
-
9
A
Quiescent Input Current (Typical Vin)
Iin,Qsnt
-
120
140
mA
Standby Input Current
Iin,Stdby
-
10
18
mA
Efficiency (Typical Vin; Io,max, TA = 25ºC)
η
-
89.0
-
%
Output Voltage Set Point
Vo
3.3
V
Output Over Current Protection Set Point / Io_max
Io,cli
110
-
160
%
Output Over Voltage Protection Set Point / Vo_typical
-
115
130
165
%
Output ripple frequency
-
280
300
320
kHz
Output Ripple and Noise Voltage
RMS
Peak-to-peak (5 Hz to 20 MHz bandwidth, Typical Vin)
-
50
mVrms
-
150
mVp-p
External Load Capacitance
-
-
-
10,000
μF
5V/8A Module (SYRS1050x008xxx-x)
Parameter
Symbol
Min
Typical
Max
Unit
Input Current
Iin,Max
-
-
8
A
Quiescent Input Current (Typical Vin)
Iin,Qsnt
-
80
110
mA
Standby Input Current
Iin,Stdby
-
8
20
mA
Efficiency (Typical Vin; Io,max, TA = 25ºC)
η
-
91.5
-
%
Output Voltage Set Point
Vo
5.0
V
Output Over Current Protection Set Point / Io_max
Io,cli
115
-
175
%
Output Over Voltage Protection Set Point / Vo_typical
-
115
125
150
%
Output ripple frequency
-
230
250
270
kHz
Output Ripple and Noise Voltage
RMS
Peak-to-peak (5 Hz to 20 MHz bandwidth, Typical Vin)
-
40
mVrms
-
150
mVp-p
External Load Capacitance
-
-
-
7,000
μF
5V/12A Module (SYRS1050x012xxx-x)
Parameter
Symbol
Min
Typical
Max
Unit
Input Current
Iin,Max
-
-
10
A
Quiescent Input Current (Typical Vin)
Iin,Qsnt
-
100
130
mA
Standby Input Current
Iin,Stdby
-
8
20
mA
Efficiency (Typical Vin; Io,max, TA = 25ºC)
η
-
90.5
-
%
Output Voltage Set Point
Vo
5.0
V
Output Over Current Protection Set Point / Io_max
Io,cli
108
-
170
%
Output Over Voltage Protection Set Point / Vo_typical
-
115
125
150
%
Output ripple frequency
-
230
250
270
kHz
Output Ripple and Noise Voltage
RMS
Peak-to-peak (5 Hz to 20 MHz bandwidth, Typical Vin)
-
50
mVrms
-
180
mVp-p
External Load Capacitance
-
-
-
8,000
μF
6V/5A Module (SYRS1060x005xxx-x)
Parameter
Symbol
Min
Typical
Max
Unit
Input Current
Iin,Max
-
-
6
A
Quiescent Input Current (Typical Vin)
Iin,Qsnt
-
80
100
mA
Standby Input Current
Iin,Stdby
-
6
15
mA
Efficiency (Typical Vin; Io,max, TA = 25ºC)
η
-
91.5
-
%
Output Voltage Set Point
Vo
6.0
V
Output Over Current Protection Set Point / Io_max
Io,cli
115
-
175
%
Output Over Voltage Protection Set Point / Vo_typical
-
115
125
150
%
Output ripple frequency
-
240
260
280
kHz
Output Ripple and Noise Voltage
RMS
Peak-to-peak (5 Hz to 20 MHz bandwidth, Typical Vin)
-
40
mVrms
-
120
mVp-p
External Load Capacitance
-
-
-
2,000
μF
SYRS1 Series 9 – 36V Input Sixteenth Brick Converters
Datasheet SYRS1 Series 12-06-2016 4
8V/4A Module (SYRS1080x004xxx-x)
Parameter
Symbol
Min
Typical
Max
Unit
Input Current
Iin,Max
-
-
7
A
Quiescent Input Current (Typical Vin)
Iin,Qsnt
-
85
110
mA
Standby Input Current
Iin,Stdby
-
6
18
mA
Efficiency (Typical Vin; Io,max, TA = 25ºC)
η
-
91.5
-
%
Output Voltage Set Point
Vo
8.0
V
Output Over Current Protection Set Point / Io_max
Io,cli
110
-
180
%
Output Over Voltage Protection Set Point / Vo_typical
-
115
130
150
%
Output ripple frequency
-
230
250
270
kHz
Output Ripple and Noise Voltage
RMS
Peak-to-peak (5 Hz to 20 MHz bandwidth, Typical Vin)
-
40
mVrms
-
100
mVp-p
External Load Capacitance
-
-
-
2,000
μF
8V/7A Module (SYRS1080x007xxx-x)
Parameter
Symbol
Min
Typical
Max
Unit
Input Current
Iin,Max
-
-
11
A
Quiescent Input Current (Typical Vin)
Iin,Qsnt
-
100
120
mA
Standby Input Current
Iin,Stdby
-
6
18
mA
Efficiency (Typical Vin; Io,max, TA = 25ºC)
η
-
91.0
-
%
Output Voltage Set Point
Vo
8.0
V
Output Over Current Protection Set Point / Io_max
Io,cli
110
-
165
%
Output Over Voltage Protection Set Point / Vo_typical
-
115
130
150
%
Output ripple frequency
-
230
250
270
kHz
Output Ripple and Noise Voltage
RMS
Peak-to-peak (5 Hz to 20 MHz bandwidth, Typical Vin)
-
50
mVrms
-
150
mVp-p
External Load Capacitance
-
-
-
2,000
μF
12V/3A Module (SYRS1120x003xxx-x)
Parameter
Symbol
Min
Typical
Max
Unit
Input Current
Iin,Max
-
-
7
A
Quiescent Input Current (Typical Vin)
Iin,Qsnt
-
90
110
mA
Standby Input Current
Iin,Stdby
-
6
18
mA
Efficiency (Typical Vin; Io,max, TA = 25ºC)
η
-
92.0
-
%
Output Voltage Set Point
Vo
12.0
V
Output Over Current Protection Set Point / Io_max
Io,cli
110
-
180
%
Output Over Voltage Protection Set Point / Vo_typical
-
115
130
150
%
Output ripple frequency
-
200
220
240
kHz
Output Ripple and Noise Voltage
RMS
Peak-to-peak (5 Hz to 20 MHz bandwidth, Typical Vin)
-
40
mVrms
-
120
mVp-p
External Load Capacitance
-
-
-
700
μF
12V/5A Module (SYRS1120x005xxx-x)
Parameter
Symbol
Min
Typical
Max
Unit
Input Current
Iin,Max
-
-
11
A
Quiescent Input Current (Typical Vin)
Iin,Qsnt
-
100
120
mA
Standby Input Current
Iin,Stdby
-
6
18
mA
Efficiency (Typical Vin; Io,max, TA = 25ºC)
η
-
91.5
-
%
Output Voltage Set Point
Vo
12.0
V
Output Over Current Protection Set Point / Io_max
Io,cli
110
-
160
%
Output Over Voltage Protection Set Point / Vo_typical
-
115
130
150
%
Output ripple frequency
-
200
220
240
kHz
Output Ripple and Noise Voltage
RMS
Peak-to-peak (5 Hz to 20 MHz bandwidth, Typical Vin)
-
60
mVrms
-
160
mVp-p
External Load Capacitance
-
-
-
1,000
μF
SYRS1 Series 9 – 36V Input Sixteenth Brick Converters
Datasheet SYRS1 Series 12-06-2016 5
15V/2A Module (SYRS1150x002xxx-x)
Parameter
Symbol
Min
Typical
Max
Unit
Input Current
Iin,Max
-
-
7
A
Quiescent Input Current (Typical Vin)
Iin,Qsnt
-
70
90
mA
Standby Input Current
Iin,Stdby
-
6
18
mA
Efficiency (Typical Vin; Io,max, TA = 25ºC)
η
-
91.0
-
%
Output Voltage Set Point
Vo
15.0
V
Output Over Current Protection Set Point / Io_max
Io,cli
110
-
190
%
Output Over Voltage Protection Set Point / Vo_typical
-
115
130
160
%
Output ripple frequency
-
180
200
220
kHz
Output Ripple and Noise Voltage
RMS
Peak-to-peak (5 Hz to 20 MHz bandwidth, Typical Vin)
-
40
mVrms
-
100
mVp-p
External Load Capacitance
-
-
-
700
μF
15V/4A Module (SYRS1150x004xxx-x)
Parameter
Symbol
Min
Typical
Max
Unit
Input Current
Iin,Max
-
-
12
A
Quiescent Input Current (Typical Vin)
Iin,Qsnt
-
100
120
mA
Standby Input Current
Iin,Stdby
-
6
18
mA
Efficiency (Typical Vin; Io,max, TA = 25ºC)
η
-
90.0
-
%
Output Voltage Set Point
Vo
15.0
V
Output Over Current Protection Set Point / Io_max
Io,cli
110
-
180
%
Output Over Voltage Protection Set Point / Vo_typical
-
115
130
160
%
Output ripple frequency
-
180
200
220
kHz
Output Ripple and Noise Voltage
RMS
Peak-to-peak (5 Hz to 20 MHz bandwidth, Typical Vin)
-
60
mVrms
-
200
mVp-p
External Load Capacitance
-
-
-
700
μF
Feature Descriptions
ON/OFF
The converter can be turned on and off by
changing the voltage between the ON/OFF pin
and Vin(-). The SYRS1 Series of converters are
available with positive logic and negative logic.
For the negative control logic, the converter is
ON when the ON/OFF pin is at a logic low level
and OFF when the ON/OFF pin is at a logic high
level. For the positive control logic, the
converter is ON when the ON/OFF pin is at a
logic high level and OFF when the ON/OFF pin
is at a logic low level.
With the internal pull-up circuitry, a simple
external switch between the ON/OFF pin and
Vin(-) can control the converter.
The logic low level is from 0V to 1.2V and the
maximum sink current during logic low is 1mA.
The external switch must be capable of
maintaining a logic-low level while sinking up to
this current. The logic high level is from 3.5V to
15V. The converter has an internal pull-up
circuit that ensures the ON/OFF pin at a high
logic level when the leakage current at ON/OFF
pin is no greater than 50μA.
Remote SENSE
The remote SENSE pins are used to sense the
voltage at the load point to accurately regulate
the load voltage and eliminate the impact of the
voltage drop in the power distribution path.
SENSE(+) and SENSE(-) pins should be
connected between the points where voltage
regulation is desired. The voltage between the
SENSE pins and the output pins must not
exceed the smaller of 0.5V or 10% of typical
output voltage.
[Vout(+) - Vout(-)] - [SENSE(+) - SENSE (-)] < MIN{0.5V,
10%Vo}
When remote sense is not used, the SENSE
pins should be connected to their corresponding
output pins. If the SENSE pins are left floating,
the converter will deliver an output voltage
slightly higher than its specified typical output
voltage.
SYRS1 Series 9 – 36V Input Sixteenth Brick Converters
Datasheet SYRS1 Series 12-06-2016 6
Output Voltage Adjustment (Trim)
The trim pin allows the user to adjust the output
voltage set point. To increase the output
voltage, an external resistor is connected
between the TRIM pin and SENSE(+). To
decrease the output voltage, an external resistor
is connected between the TRIM pin and
SENSE(-). The output voltage trim range is 80%
to 110% of the specified typical output voltage.
The circuit configuration for trim down operation
is shown in Figure 1.
To decrease the output voltage, the value of the
external resistor should be.
))(.(
kRdown 2210
511
Where
100
)( Vnom
VadjVnom
and
Vnom= Typical Output Voltage
Vadj=Adjusted Voltage
The circuit configuration for trim up operation is
shown in Figure 2. To increase the output
voltage, the value of the resistor should be:
))(.
.)(.
(
k
Vo
Rup 2210
511
2251100115
Where
Vo = Typical Output Voltage
Figure 1.Circuit to Decrease Output Voltage
Figure 2.Circuit to Increase Output Voltage
Output Over-Current Protection (OCP)
This converter can be ordered in either latch-off
or auto-restart version upon OCP, OVP, and
OTP.
With the latch-off version, the converter will
latch off when the load current exceeds the limit.
The converter can be restarted by toggling the
ON/OFF switch or recycling the input voltage.
With the auto-restart version, the converter will
operate in a hiccup mode (repeatedly try to
restart) until the cause of the over-current
condition is cleared.
Output Over-Voltage Protection (OVP)
With the latch-off version, the converter will
latch off when the output voltage exceeds the
limit. The converter can be restarted by toggling
the ON/OFF switch or recycling the input
voltage.
With the auto-restart version, the converter will
operate in a hiccup mode (repeatedly try to
restart) until the cause of the over-voltage
condition is cleared.
Over Temperature Protection (OTP)
With the latch-off version, the converter will shut
down and latch off if an over-temperature
condition is detected. The converter has a
temperature sensor located at a carefully
selected position in the converter circuit board,
which represents the thermal condition of key
components of the converter. The thermal
shutdown circuit is designed to turn the
converter off when the temperature at the
sensor reaches 120°C. The module can be
restarted by toggling the ON/OFF switch or
recycling the input voltage.
With the auto-restart version, the converter will
resume operation after the converter cools
down.
Design Considerations
As with any DC/DC converter, the stability of the
SYRS1 converters may be compromised if the
source impedance is too high or inductive. It’s
desirable to keep the input source ac-
impedance as low as possible. Although the
converters are designed to be stable without
adding external input capacitors for typical
Vo(+)
Vo()
SENSE(+)
SENSE(-)
TRIM
Load
Rdown
Vo(+)
Vo()
SENSE(+)
SENSE(-)
TRIM
Rup
Load
SYRS1 Series 9 – 36V Input Sixteenth Brick Converters
Datasheet SYRS1 Series 12-06-2016 7
source impedance, it is recommended to add
220 F low ESR electrolytic capacitors at the
input of the converter for each 100W output
power, which reduces the potential negative
impact of the source impedance on the
converter stability. These electrolytic capacitors
should have sufficient RMS current rating over
the operating temperature range.
The converter is designed to be stable without
additional output capacitors. To further reduce
the output voltage ripple or improve the
transient response, additional output capacitors
are often used in applications. When additional
output capacitors are used, a combination of
ceramic capacitors and tantalum/polymer
capacitors shall be used to provide good filtering
while assuring the stability of the converter.
SYRS1 Series 9 – 36V Input Sixteenth Brick Converters
Datasheet SYRS1 Series 12-06-2016 8
Mechanical Information
Potted, metal case Potted, metal shield, flange
SYRS1 Series 9 – 36V Input Sixteenth Brick Converters
Datasheet SYRS1 Series 12-06-2016 9
Potted, baseplate Potted, flange
Notes:
1) All dimensions in mm (inches)
Tolerances: x + .5 (.xx + 0.02)
.xx + .25 (.xxx + 0.010)
2) Input and function pins are 1.02mm (0.040”) dia. with +/-
0.10mm (0.004”) tolerance; the standoff shoulders are
2.00mm (0.078”) dia. with +/- 0.15mm (0.006”)
tolerance.
3) Output pins are 1.57 mm (0.062”) dia. with +/- 0.10mm
(0.004”) tolerance; the standoff shoulders are 2.46mm
(0.097”) dia. with +/- 0.15mm (0.006”) tolerance.
4) All pins are coated with 90%/10% solder, Gold, or Matte
Tin finish with Nickel underplating.
5) Workmanship meets or exceeds
IPC-A-610 Class II
6) Baseplate flatness tolerance is 0.10mm (0.004”) TIR for
surface
