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S020_084-S020-00
www.murata-ps.com
12.0V input, 1.2 to 5.0V adjustable output, 20A or 55W
Features
• High output 20A up to 55W max
• 12V +5/-10% input
• Load Regulation ±0.5%
• Factory set to 1.2V output with output trim up to 5.0V
• High Efficiency to 93%
• Power Good and Enable
• Short Circuit protection
• MTBF 3.0 million hours
• Can sink 8A current, maintaining output regulation
• Back Bias protection
NOT RECOMMENDED
FOR NEW DESIGNS
This product is not fuse protected. User is responsible for providing system protection.
Consult factory for application information.
Specifications *
S020
Input Specifications
Input voltage range
External input capacitor
12.0V +5/-10%
Input capacitor capable of ripple
current
Measured at +Vin pin
See ripple current curve on pg 6 and Input and Output
Capacitance table on pg 8
Output Specifications
Standard output voltages
and output current
Load regulation
Line regulation
External output capacitor
Short circuit protection
1.2V, 20A
1.25V, 20A
1.5V, 20A
1.8V, 20A
2.5V, 16A
3.3V, 13A
5.0V, 11A
±0.5%
±0.4%
820μF OSCON or equivalent with
ESR < 12m7
200% of maximum rated current
Regulation range is ± 3% including output voltage set
point, line regulation and load regulation over the operating temperature range.
See DC Voltage Regulation table on pg 6 for trimming to
different voltages
0 to 20A load
12.0V input voltage range
See also Input and Output Capacitance table on pg 8
Autorecovery
General Specifications
Enable **
Efficiency @ Full Load
Isolation
Switching frequency
Approvals and Standards
Protection
Operating Temperature ***
Storage Temperature
Weight
MTBF
ON-high / OFF-low
93.6% @ 5V
Non-isolated
300kHz
UL 94V-0
Fusing
0°C to 50°C
-40°C to 70°C
0.25 oz
1.9 million hours
See chart on pg 4.
Fixed
Unit is not fused.
Non-condensing
Per RAC PRISM at 50°C ambient and 300 LFM
* All specifications are typical at nominal input, full load at 25°C unless otherwise stated.
** Pull below 0.35V to disable the SIP; pull above 2.4V (do not exceed 5.5V) to enable the SIP.
*** The output capacitors must meet the max ESR <12 m7 requirement over the operating temperature range.
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29 Apr 2010
MDC_S020_084-S020-00.B01 Page 1 of 9
S020_084-S020-00
12.0V input, 1.2 to 5.0V adjustable output, 20A or 55W
Ordering Information
S020 - 1 2 2 0 1 2 0 - F B
Pin Length
B = 0.140 inch
Model Number
Feature Options
F = Trim, Enable, PWRGD
Input Voltage
12 = 12V
Output Voltage
120 = 1.20 Volts
Mechanical Options
2 = Vertical Top Side Pins
4 = Horizontal Bottom Side Pins
Set Point Tolerance
0 = 3.0%
Pin Assignments
CONNECTOR
PIN
FUNCTION
CONNECTOR
PIN
FUNCTION
J1
1
VOUT
J1
6
PWRGD
Ground
2
VOUT
7
3
VOUT
8
Ground
4
Trim
5
Enable
9
PWRGD_SET
10
VIN
11
VIN
Set Point Resistor Table
Ambient conditions: 400 LFM and 50°C
Output Set Resistor
Output Current Rating (Amps)
Open
20
20
23.7 k7
20
3.92 k7
20
1.96 k7
16
909 7
13
5627
11
309 7
Output Voltage
1.20
1.25
1.50
1.80
2.50
3.30
5.00
PWRGD Set Resistor
Open
169 k7
26.1 k7
11.8 k7
4.22 k7
1.78 k7
0.00 7(short)
The output voltage is set by applying the correct output set resistor per above table between the Trim Pin &
Ground.
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29 Apr 2010
MDC_S020_084-S020-00.B01 Page 2 of 9
S020_084-S020-00
12.0V input, 1.2 to 5.0V adjustable output, 20A or 55W
Outline Drawings
Vertical Mount Option (S020-1220120-FB)
Horizontal Mount Option (S020-1240120-FB)
1. Dimensions are in inches and (millimeters).
2. Tolerances: (unless otherwise noted)
Inches
.XX ± .020
.XXX ± .010
Pin:
± .002
www.murata-ps.com
Millimeters
.X ± 0.5
.XX ± 0.25
± 0.05
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29 Apr 2010
MDC_S020_084-S020-00.B01 Page 3 of 9
S020_084-S020-00
12.0V input, 1.2 to 5.0V adjustable output, 20A or 55W
Efficiency Curves at 25°C
Nominal Line
Efficiency
94.0%
5.0V
89.0%
3.3V
84.0%
2.5V
79.0%
1.8V
74.0%
20%
1.25V
40%
60%
80%
1.2V
100%
Load Percentage
LOAD (%) 1.2 Vout 1.25 Vout 1.8 Vout
20%
78.1%
78.2%
82.7%
40%
82.6%
82.5%
86.0%
60%
81.9%
81.8%
85.2%
80%
80.1%
79.7%
83.1%
100%
77.2%
76.9%
80.6%
2.5 Vout
83.6%
87.9%
88.5%
87.8%
86.1%
3.3 Vout
84.3%
89.0%
90.3%
90.2%
89.6%
5.0 Vout
85.2%
90.6%
92.3%
92.9%
92.9%
Derating Curves
D e rating C urv e s
1.2 Volts
D e ra tin g C u rv e s
1 . 8 V o lt s
25
25
20
20
De rating Curv e s
2.5 Volts
400 LFM
15
300 LFM
200 LFM
100 LFM
10
400
300
3 0 0 L FM
2 0 0 L FM
1 0 0 L FM
10
400
300
200
200
200 LFM
20
40
400
300
200
100
0
20
60
100 LFM
5
0
0
300 LFM
10
100
5
100
5
400 LFM
15
4 0 0 L FM
15
Max Output Current
Max Output Current
Max Output Current
20
40
20
60
40
Derating Curves
5 Volts
Derating Curves
3.3 Volts
16
15
12
400 LFM
300 LFM
200 LFM
8
100 LFM
400
300
4
Max Output Current
Max Output Current
60
Max Ambient
M a x A m b ie n t
M a x Am bie nt
400 LFM
10
300 LFM
200 LFM
100 LFM
400
5
300
200
200
100
100
0
20
40
60
Max Ambient
80
0
20
30
40
50
60
70
Max Ambient
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29 Apr 2010
MDC_S020_084-S020-00.B01 Page 4 of 9
S020_084-S020-00
12.0V input, 1.2 to 5.0V DC/DC
adjustable output,
20A or 55W
Converter
Programmable, Single Output, 1.1V - 1.85Vout @ 60A
PWRGD - Power Good Signal
The power good signal will be asserted, driven high, by the converter to indicate that the output is
valid. If the output fails the specified DC voltage regulation limits or the output is below 90% of
the nominal voltage, then the PWRGD signal will be driven low.
The output is an open collector/drain. It is capable of driving the output below 0.4V with a load of
4mA.
PWRGD_SET - Power Good Signal Levelset
The section sets the Power Good signal levels with a single resistor connected between the
PWRGD_SET (Pin9) and Ground (Pin7). Note fault condition is Low signal on PWRGD_SET.
OUTPUT VOLTAGE
PWRGD_SET RESISTOR (1%tol)
5V
3.3V
2.5V
1.8V
1.5V
1.25V
1.2V
SHORT ( Zero Ohm)
1.78K
4.22K
11.8K
30.1K
169K
Open
PWRGD_Threshold 6.19– k– ¥¦
6´
1.24
§ 2.21– k Rset
18.86– 10
µ 1.24
¶
Logic Timings
T7
Off
ENABLE
On
DC Vin
Off
90%
OUTPUT
10%
PWRGD
T3
PWRGD Sense Level = 90% of nom T2
Output Rise Time 0ms < T2 < 5ms
PWRGD Delay
0ms < T3 < 10ms
ENABLE-TO-OUTPUT DELAY0ms < T7 < 100ms
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29 Apr 2010
MDC_S020_084-S020-00.B01 Page 5 of 9
S020_084-S020-00
12.0V input, 1.2 to 5.0V adjustable output, 20A or 55W
DC Voltage Regulation
The DC output voltages will remain within the regulation ranges shown in the following table
when measured at the load end of the connector. Connect Set Resistor per table below from
Trim (Pin4) to Ground (Pin7). Regulation range includes output voltage Set Point, Line
Regulation & Load Regulation over the temperature range.
Output Level
Minimum
Maximum
Set Resistor (1%tol)
+5V
+3.3V
+2.5V
+1.8V
1.5V
1.25V
1.2V
-3%
-3%
-3%
-3%
-3%
-3%
-3%
+3%
+3%
+3%
+3%
+3%
+3%
+3%
3097
5627
9097
1.96k7
3.92k7
23.7k7
Open ( no resistor)
Vo:=
(
0.992
+
5.62k
0.992
Rset
(
The above regulations should be for all operating conditions.
1.18k + 0.992
Input Ripple Current
7.0
Approximate ripple
current ratings required
for input bulk capacitor.
6.0
.5
=2
Vo
4.0
Vo
=5
Ripple Current (Arms)
5.0
3.0
.5
=1
Vo
2.0
1.0
0
2
4
6
8
10 12 14
16
18 20
Output Current (A)
DC Input Reflected Ripple
Maximum reflected current ripple will not exceed 150mA (pk-pk) 5Hz to 20MHz per test setup
indicated below.
0.5μH
Ltest = 500nH
Cs = 270μF Esr < 0.1 ohm at 100kHz 20°C
C1 = 270μF Esr < 0.02 ohm at 100kHz 20°C , C2 = 2μF ceramic
Tektronix current Probe P/N TCP202
Filter components should be mounted close to the module.
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29 Apr 2010
MDC_S020_084-S020-00.B01 Page 6 of 9
S020_084-S020-00
12.0V input, 1.2 to 5.0V adjustable output, 20A or 55W
Output Ripple and Noise
The following output ripple/noise requirements will be met throughout the load ranges specified
and under all input voltage conditions specified.
Output Level
Maximum
Unit
+5V
+3.3V
+2.5V
+1.8V
+1.5V
+1.25V
+1.2V
75mV
50mV
40mV
40mV
40mV
40mV
40mV
mVpp
mVpp
mVpp
mVpp
mVpp
mVpp
mVpp
Ripple and noise are defined as periodic or random signals over the frequency band of 10Hz to
20MHz. Measurements will be made with an oscilloscope set to 20MHz bandwidth limit. Outputs
will be tested per the following setup.
Recommended Input and Output Caps go here.
0.1uF Ceramic
10uF Tantalum
Load Box
Converter
+12V
GND
DC Ground
Tektronix probe p/n P6138A
using BNC socket.
General Notes:
1. Load the outputs at specified minimum
output current.
2. Connect the probe as shown with the input tip and
ground as short as possible.
3. Take all measurements.
4. Repeat the measurements with the outputs at
specified maximum output current.
5. The specification for maximum output ripple is not
valid when the module is in a sinking mode. During
sink the maximum peak-to-peak voltage limit is 2x
the sourcing limit.
Oscilloscope
20MHz BW
setting
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29 Apr 2010
MDC_S020_084-S020-00.B01 Page 7 of 9
S020_084-S020-00
12.0V input, 1.2 to 5.0V adjustable output, 20A or 55W
Input and Output Capacitance
The power supply requires the following capacitance (or equivalent) on the PWB.
Output Level
+5V
+3.3V
+2.5V
+1.8V
+1.5
1.25V
1.2V
Output Capacitance *
One 680uF, 6.3V SP OSCON
One 820uF, 4V SP OSCON
One 820uF, 4V SP OSCON
One 820uF, 4V SP OSCON
One 820uF, 4V SP OSCON
One 820uF, 4V SP OSCON
One 820uF, 4V SP OSCON
Or equivalent. MBZ type AL-E caps
or POSCAPs may be used instead.
* Output Ceramic Capacitance > 60μF located close to the module
INPUT CAPACITANCE
Although input capacitance value is not critical, the input capacitors must be capable of storing
fairly large amounts of energy. The primary criteria, though, for choosing the input capacitors is AC
ripple current rating. The SIP datasheet contains a chart showing ripple current vs. output current
(or output power). The system designer determines the maximum SIP output current required from
the SIP. Based on that number, the chart will show a corresponding ripple current rating the
designer needs to plan for when choosing input capacitors. Suggested capacitors are OSCONS,
MBZ type AL-E or POSCAPS. It is advised that the ripple current capacity of the capacitor be
derated to the estimated ambient temperature. Capacitors of at least 16V are necessary and the
user should also place >22μF of ceramics close to the module.
Output Transient Response (Dynamic Loading)
The output voltages will remain within their regulation limits specified for the load steps defined
below. The maximum over/undershoot voltages will not exceed those defined below and will not
cause any over or undervoltage detection circuits to activate. The load slew rate will not exceed
10A/μS. Recommended input and output capacitors should be used to meet the Spec.
Output
Level
+5V
+3.3V
+2.5V
+1.8V
+1.5
1.25V
1.2V
Maximum Load
Step
50%
50%
50%
50%
50%
50%
50%
Minimum Starting
DC Load
0A
0A
0A
0A
0A
0A
0A
Voltage
Over/Undershoot
±4%
±5%
±5%
±7%
±7%
±10%
±10%
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29 Apr 2010
MDC_S020_084-S020-00.B01 Page 8 of 9
S020_084-S020-00
12.0V input, 1.2 to 5.0V adjustable output, 20A or 55W
Shock and Vibration
Vibration Test
Tri-axis random vibration (as generated by pneumatic hammer)
Typical vibration conditions:
Frequency Range:
Vibration Levels:
Step Dwell Time:
Final Dwell Time:
Unit Line Condition:
Unit Load Condition:
Broadband
20 to 55Grms
10-15 minutes
30-60 minutes
Nom Input voltage
Full Load Output
The UUT will survive any specified vibration level or 30Grms minimum without damage and performance will
remain within specification limits during vibration testing
Shock Test
NON-OPERATING/SHIPPING
Drop/Impact
The power supply, in its individual shipping package, will be capable of withstanding the impacts specified in
the International Safe Transit Association’s Integrity Test Procedure 1A – Impact Test.
Test System:
Orientation:
Drop Height:
Number of Drops:
Murata Power Solutions, Inc.
11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A.
ISO 9001 and 14001 REGISTERED
Free Fall Drop Test System
Six (6) faces, three (3) edges, and one (1) corner
Height levels determined by product weight (minimum 8 inches (150 lb.),
maximum 30 inches (21 lb.))
Ten (10)
Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other
technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply
the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without
notice.
© 2010 Murata Power Solutions, Inc.
www.murata-ps.com/locations
email: [email protected]
29 Apr 2010
MDC_S020_084-S020-00.B01 Page 9 of 9