SRPE-20E1A0R [BEL]
Wide Operating Temperature Range (0 ï°C - 50 ï°C);
| 型号： | SRPE-20E1A0R |
| 厂家： | 
BEL FUSE INC. |
| 描述： | Wide Operating Temperature Range (0 ï°C - 50 ï°C) |
| 文件： | 总20页 (文件大小：793K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
The Bel SRPE-20E1A0 is part of the non-isolated dc to dc converter
power module series. The module uses a vertical SMT package. This
converter is available in a range of output voltages from 0.6 VDC to 2.0
Vdc over a wide range of input voltage (Vin = 4.5 – 13.2 VDC).
4.5 – 13.2 VDC Input
0.6 – 2.0 VDC / 20 A Output
Non-Isolated
Wide Output Trim Range
Fixed Frequency
Output Over-Voltage Shutdown
High Efficiency
OCP/SCP
High Power Density
Power Good Signal
Over Temperature Shutdown
Remote Sense
Wide Input Voltage Range
Remote On/Off
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Low Cost
Under-Voltage Lockout
Wide Operating Temperature Range (0 C - 50 C)
Class II, Category 2, Non-Isolated DC/DC Converter
(refer to IPC-9592B)
Networking
Computers and Peripherals
Telecommunications
•
•
•
2
SRPE-20E1A0
OUTPUT
VOLTAGE
MAX. OUTPUT
CURRENT
MAX. OUTPUT
POWER
TYPICAL
EFFICIENCY
MODEL NUMBER
INPUT VOLTAGE
SRPE-20E1A0G
SRPE-20E1A0R
0.6 – 2.0 VDC
4.5 - 13.2 VDC
20 A
40 W
92%
S
R
RoHS
Status
PE
Series
Name
-
20
Output
Current
E
Input
Range
1A
0
x
Package
Mounting
Type
Output Voltage
Active Logic
G – Tray Package
4.5 - 13.2 V
0.6 - 2.0 V
Surface Mount
RoHS
SMD SIP
20 A
Active High
R – Tape and Reel
Package
PARAMETER
DESCRIPTION
MIN
TYP
MAX
15
UNITS
Continuous non-operating Input Voltage
Output Enable Terminal Voltage
Ambient Temperature
-0.3
-0.3
0
-
-
-
-
-
V
V
15
50
C
C
m
Storage Temperature
-40
-
125
2000
Altitude
NOTE: Ratings used beyond the maximum ratings may cause a reliability degradation of the converter or may permanently damage the device.
PARAMETER
DESCRIPTION
MIN
TYP
12
-
MAX
13.2
10.0
50
UNIT
Input Voltage
4.5
V
A
Input Current (full load)
-
-
-
-
-
-
All Vin, Vout = 0.6 V, at Ta = 25˚C.
All Vin, Vout = 1.2 V, at Ta = 25˚C.
All Vin, Vout = 2 V, at Ta = 25˚C.
30
50
60
10
-
Input Current (no load)
70
mA
80
Remote Off Input Current
-
mA
mA
Vout = 2 V, Iout = 20 A. With simulated source
impedance of 1 µH, 5 Hz to 20 MHz. Use
100 µF/100 V electrolytic capacitors with ESR <
0.2 ohm max @ 25˚C.
Input Reflected Ripple Current (rms)
20
Input Reflected Ripple Current (pk-pk)
-
-
100
mA
Turn-on Voltage Threshold
Turn-off Voltage Threshold
3.8
3.8
4.3
4.1
5
V
V
4.5
NOTE: All specifications are typical at 25 C unless otherwise stated.
tech.support@psbel.com
3
SRPE-20E1A0
PARAMETER
DESCRIPTION
MIN
-2
-3
-2
-2
-
TYP
MAX
UNIT
Vo,set ≥ 0.9 VDC
-
2
3
Output Voltage
Set Point
Setpoint test condition: Vin = 12 V,
Iout = half load, Ta = 25°C
%Vo,set
Vo,set < 0.9 VDC
-
-
Load Regulation
Vin = 12 V, Io = 0 - 20 A, Ta = 25°C
2
%Vo,set
%Vo,set
%Vo,set
mV
Line Regulation
Vin = 4.5 - 13.2 V, Io = 20 A, Ta = 25°C
-
2
Regulation Over Temperature
Output Ripple and Noise (pk-pk)
±3
-
-
Condition: Vin = 12 V, lout = full load, Ta = 25°C;
measured with a 10 µF + 7*100 µF ceramic cap
and 3*470 µF POSCAP ESR ≤ 12 m ohm at
output.
-
30
Output Ripple and Noise (rms)
-
-
5
mV
Output Current Range
Output DC Current Limit
Turn On Time
0
22
-
-
-
20
39
5
A
A
-
ms
%
Overshoot at Turn On
-
0
5
Required Cout_min = 470 uF with
ESR ≤ 12 m ohm.
Output Capacitance
470
-
6000
µF
TRANSIENT RESPONSE
Overshoot
-
-
-
-
25
20
25
20
40
40
40
40
mV
µs
△V 50% ~ 75%
of Max Load
Vin = 12 V, Vout = 2.0 V, di/dt = 2.5 A/µs.
Measured with a 10 uF+7*100 µF ceramic cap and
3*470 µF POSCAP ESR ≤ 12 m ohm at output.
Settling Time
Overshoot
mV
µs
△V 75% ~ 50%
of Max Load
Settling Time
NOTE: All specifications are typical, at 25°C unless otherwise stated.
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+353 61 49 8941
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© 2021 Bel Power Solutions & Protection
BCD.20134_AP
4
SRPE-20E1A0
PARAMETER
DESCRIPTION
MIN
82
88
91
-
TYP
83.6
89.3
92.2
500
MAX
UNIT
Vo = 0.6 V, Io = 20 A
Vo = 1.2 V, Io = 20 A
Vo = 2.0 V, Io = 20 A
-
-
-
-
-
%
Efficiency
Switching Frequency
kHz
Over Temperature Protection
-
125
C
Output Voltage Trim Range
(Wide Trim)
This voltage is achieved by trimming up output slowly.
0.6
-
2
V
Weight
MTBF
FIT
-
-
-
6.8
88.4
-
-
-
g
Mhrs
-
Calculated Per Telcordia SR-332, Issue 3
(Vin = 12 V, Vo = 0.9 V, Io = 20 A, Ta = 40˚C,
with 300 LFM, FIT = 109/MTBF)
11.3
1.20 x 0.43 x 0.65
inch
mm
Dimensions (L × W × H)
30.48 x 10.92 x 16.51
NOTE: All specifications are typical, at 25°C unless otherwise stated.
PARAMETER
DESCRIPTION
MIN
TYP
MAX
0.5
UNIT
Signal Low (Unit Off)
Signal High (Unit On)
0
-
-
V
V
Remote On/Off pin open, unit off.
1.8
15
tech.support@psbel.com
5
SRPE-20E1A0
Vout = 0.6V
95.0%
90.0%
85.0%
80.0%
75.0%
70.0%
65.0%
60.0%
55.0%
4.5Vin
12Vin
13.2Vin
0.0 1.0 2.0 4.00 6.00 8.00 10.0 12.0 14.0 16.0 18.0 20.0
output current
Figure 1. Efficiency @ Vo = 0.6 V
Vout = 1.2V
95.0%
90.0%
85.0%
80.0%
75.0%
70.0%
65.0%
60.0%
55.0%
4.5Vin
12Vin
13.2Vin
0.0 1.0 2.0 4.00 6.00 8.00 10.0 12.0 14.0 16.0 18.0 20.0
output current
Figure 2. Efficiency @ Vo = 1.2 V
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BCD.20134_AP
6
SRPE-20E1A0
Vout = 2V
95.0%
90.0%
85.0%
80.0%
75.0%
70.0%
65.0%
60.0%
55.0%
4.5Vin
12Vin
13.2Vin
0.0 1.0 2.0 4.00 6.00 8.00 10.0 12.0 14.0 16.0 18.0 20.0
output current
Figure 3. Efficiency @ Vo = 2.0 V
Input Reflected Ripple Current
Testing setup
is
ic
Ls
Vin+
Vin-
+
+
Cs
Cin
Figure 4. Test setup
Notes and values in testing:
is: Input Reflected Ripple Current
ic: Input Terminal Ripple Current
Ls: Simulated Source Impedance (1 μH)
Cs: Offset possible source Impedance (100 μF, ESR < 0.2 Ω @ 100 kHz, 20 ˚C)
Cin: Electrolytic capacitor, should be as close as possible to the power module to damp ic ripple current and enhance
stability. Recommendation: 100 μF, ESR < 0.2 Ω @ 100 kHz, 20 ˚C.
Below measured waveforms are based on above simulated and recommended inductance and capacitance.
tech.support@psbel.com
7
SRPE-20E1A0
Figure 5. is (input terminal ripple current), AC component
Figure 6. ic (input terminal ripple current), AC component
NOTE: Vin = 12 V, Vo = 2 V, Io = 20 A, with 1*10 µF ceramic and 1*470 µF polymer capacitor at the output, Ta = 25˚C.
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Europe, Middle East
North America
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© 2021 Bel Power Solutions & Protection
BCD.20134_AP
8
SRPE-20E1A0
Airflow Direction
Figure 7. Airflow direction, Hot spot location and allowed
Figure 8. Vin = 12 V, Vo = 0.6 – 2 V
maximum temperature
Under-voltage Lockout
V1 = 4.1 V
V2 = 4.3 V
Voltage Falling
Voltage Rising
Input Voltage (V)
V1
V2
Figure 9. Input under-voltage lockout
tech.support@psbel.com
9
SRPE-20E1A0
Figure 10. Ripple and noise at full load, 12 VDC input
Figure 11. Ripple and noise at full load, 12 VDC input
0.6 VDC / 20 A output and Ta = 25˚C
0.9 VDC / 20 A output and Ta = 25˚C
Figure 12. Ripple and noise at full load, 12 VDC input
2.0 VDC / 20 A output and Ta = 25˚C
NOTE: Test condition of the output ripple and noise:
0-20 MHz BW, with a 10 µF+7*100 µF ceramic cap and 3*470 µF POSCAP ESR ≤ 12 m ohm at output.
Asia-Pacific
Europe, Middle East
North America
+86 755 298 85888
+353 61 49 8941
+1 866 513 2839
© 2021 Bel Power Solutions & Protection
BCD.20134_AP
10
SRPE-20E1A0
Figure 13. Vin = 50%-75% Load Transient at Vin = 12 VDC
Figure 14. Vin = 75% - 50% Load Transient at Vin = 12 VDC
Vout = 0.6 VDC @Ta = 25˚C
Vout = 0.6 VDC @Ta = 25˚C
Figure 15. Vin = 50%-75% Load Transient at Vin = 12 VDC
Figure 16. Vin= 75% - 50% Load Transient at Vin = 12 VDC
Vout = 0.9 VDC @Ta = 25˚C
Vout = 0.9 VDC @Ta = 25˚C
tech.support@psbel.com
11
SRPE-20E1A0
Figure 17. Vin=50%-75% Load Transient at Vin = 12 VDC
Figure 18. Vin = 75% - 50% Load Transient at Vin = 12 VDC
Vout = 2.0 VDC @Ta = 25˚C
Vout = 2.0 VDC @Ta = 25˚C
NOTE: Test condition of the Transient response:
di/dt = 2.5 A/µs, with a 10 µF+7*100 µF ceramic cap and 3*470 µF POSCAP ESR ≤ 12 m ohm at output.
Asia-Pacific
Europe, Middle East
North America
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+353 61 49 8941
+1 866 513 2839
© 2021 Bel Power Solutions & Protection
BCD.20134_AP
12
SRPE-20E1A0
RISE TIME
Figure 19. Rise time at full load, 12 VDC input
0.6 VDC / 20 A output and Ta = 25˚C
Figure 20. Rise time at full load, 12 VDC input
0.9 VDC / 20 A output and Ta = 25˚C
Figure 21. Rise time at full load, 12 VDC input
2.0 VDC / 20 A output and Ta = 25˚C
NOTE: Test condition of the Rise time:
di/dt = 2.5 A/µs, with a 10 µF+7*100 µF ceramic cap and 3*470 µF POSCAP ESR ≤ 12 m ohm at output.
tech.support@psbel.com
13
SRPE-20E1A0
STARTUP TIME
Startup from remote on/off
Ch1: Vo
Ch3: remote on/off
Test Condition:
With a 10 µF+7*100 µF ceramic cap and 3*470 µF POSCAP ESR ≤ 12 m ohm at output.
Figure 22. Startup time at full load, 12 VDC input
Figure 23. Startup time at full load, 12 VDC input
0.9 VDC / 20 A output and Ta = 25˚C
0.6 VDC / 20 A output and Ta = 25˚C
Figure 24. Startup time at full load, 12 VDC input
2.0 VDC / 20 A output and Ta = 25˚C
Asia-Pacific
Europe, Middle East
North America
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+353 61 49 8941
+1 866 513 2839
© 2021 Bel Power Solutions & Protection
BCD.20134_AP
14
SRPE-20E1A0
Output Voltage Set-Point Adjustment
Maximum trim up voltage is 2 V.
Minimum trim up voltage is 0.6 V.
Trim up circuit (using an external resistor)
Equations for calculating the trim resistor are shown below.
The Trim Up resistor should be connected between the Trim pin and the GND.
SRP1-20E1A0 Trim up Resistor Calculate Unit: kΩ
Vo is the desired output voltage.
Rtrimup is the required resistance between TRIM and GND.
10
5
1
1.5
2
Adjusted output voltage Vo,adj(V)
Figure 25. Trim up circuit (using an external resistor)
Figure 26. Trim up curve
Trim up circuit (using external PWM signal)
Equations for calculating the duty cycle are shown below
Figure 27. Trim up circuit (using external PWM signal)
SRP1-20E1A0 Trim up duty cycle Calculate Unit: %
Figure 28. External PWM signal duty circle
Vo(D) = 2.72 −0.0234D
Vo is the desired output voltage.
D is the external PWM signal duty cycle.
tech.support@psbel.com
15
SRPE-20E1A0
To provide protection in a fault output overload condition, the module is equipped with internal current-limiting circuitry which can
endure current limiting for a few milliseconds. If the over current condition persists beyond a few milliseconds, the module will shut
down into hiccup mode and restart once every 40 ms. The module operates normally when the output current goes into specified
range. The typical average output current is 3.5 A during hiccup.
Figure 29. Output current @ SCP, Vin = 12 V
Figure 30. Output current @ SCP, Vin = 12 V
Vout = 0.6 V, Ta = 25˚C
Vout = 0.9 V, Ta = 25˚C
Figure 31. Output current @ SCP，Vin = 12 V,
Vout = 2.0 V, Ta = 25˚C
NOTE: Test condition of the SCP:
With a 10 µF ceramic cap and a 470 µF POSCAP ESR ≤ 12 m ohm at output.
Asia-Pacific
Europe, Middle East
North America
+86 755 298 85888
+353 61 49 8941
+1 866 513 2839
© 2021 Bel Power Solutions & Protection
BCD.20134_AP
16
SRPE-20E1A0
1. This module has a power good indicator output. Power good pin used positive logic and is open collector.
2. The maximum voltage pulled up externally on Power Good pin should not exceed 7 V.
3. If the output voltage becomes within +10% and –5% of the target value, internal comparators detect power-good state and the
power-good signal becomes high after a 1 ms internal delay.
4. If the output voltage goes outside of +15% or –10% of the target value, the power-good signal becomes low after two microsecond
(2-μs) internal delay.
5. The pull up resistance must be larger than 10 k ohm.
Figure 32. Typical Start-up using Remote on/off,
Vin = 12 V, Vo = 2 V, Io = 0 A
CH1: Vout; CH2: PG
tech.support@psbel.com
17
SRPE-20E1A0
The SRPE-20E1A0 modules are designed to be compatible with reflow soldering process. The suggested Pb-free solder paste is
Sn/Ag/Cu(SAC). The recommended reflow profile using Sn/Ag/Cu solder is shown in the following. Recommended reflow peak
temperature is 245˚C while the part can withstand peak temperature of 260˚C maximum for 10 seconds. This profile should be used
only as a guideline. Many other factors influence the success of SMT reflow soldering. Since your production environment may differ,
please thoroughly review these guidelines with your process engineers.
Figure 33. Soldering information
The SRPE-20E1A0 modules have a MSL rating of 3.
The SRPE-20E1A0 modules are designed to be compatible with J-STD-033 Rev: A (Handling, Packing, Shipping and Use of Moisture
/Reflow Sensitive surface Mount devices). Moisture barrier bags (MBB) with desiccant are applied. The recommended storage
environment and handling procedure is detailed in J-STD-033.
This component has been designed, handled, and packaged ready for Pb-free reflow soldering. If the assembly shop follows J-
STD-033 guidelines, no pre-bake of this component is required before being reflowed to a PCB. However, if the J-STD-033
guidelines are not followed by the assembler, Bel recommends that the modules should be pre-baked @ 120~125˚C for a minimum
of 4 hours (preferably 24 hours) before reflow soldering.
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Europe, Middle East
North America
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BCD.20134_AP
18
SRPE-20E1A0
Figure 34. Outline
NOTE: 1) All Pins: Material - Copper Alloy;
Finish – 3 micro inches minimum Gold over 50 micro inches minimum Nickel plate
2) Un-dimensioned components are shown for visual reference only.
3) All dimensions in inch [mm]; Tolerances: x.xx +/-0.02 inch [0.51 mm]; x.xxx +/-0.010 inch [0.25 mm].
tech.support@psbel.com
19
SRPE-20E1A0
Figure 35. Pins
PIN
1
FUNCTION
Vout
PIN
7
FUNCTION
Trim
2
Vout
8
PGOOD
Vsense+
Vsense-
GND
3
Vout
9
4
GND
10
11
12
5
GND
6
Enable
Vin
Figure 36. Recommended pad layout
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Europe, Middle East
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North America
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© 2021 Bel Power Solutions & Protection
BCD.20134_AP
20
SRPE-20E1A0
DATE
REVISION
CHANGES DETAIL
APPROVAL
J.Yan
2013-08-19
2013-10-10
2014-01-10
2014-04-17
2014-07-03
2014-07-10
2014-07-29
2014-11-18
PA
PB
PC
PD
PE
PF
G
First release
Update mechanical drawing
J.Yan
Update input / output spec, efficiency, remote on/off and mechanical drawing.
Update input specs, output specs, general, efficiency, NR, TR, start up and SCP.
Update part number explanation, RoHS compliance，Add MD Note.
Update Cover, mechanical drawing
J.Yan
J.Yan
J.Yan
J.Yan
J.Yan
J.Yan
Added assembly guide drawing
H
Added trim resistor equation
Input specs: 1. Update no load input current. 2. Update input reflected ripple current.
3. Update turn on voltage threshold: min value 3.8V, typical value 4.3V, max value 5V.
4. Update turn off voltage threshold: min value 3.8V, typical value 4.1V, max value
4.5V.
Output specs: 1. Change output voltage set point max to 10%Vo, change the min to
-5%Vo. 2. Update the load/line regulation range as ±5%Vo. 3. Change output ripple
and noise max value to 30mV. 4. Change output DC current limit max value to 39A.
5. Update transient response. 6. Add the regulation over temperature.
General: 1. Update the efficiency. Include efficiency data and graph. 2. Update the
weight of module. Update the UVLO, TD, TR, OCP. Add the input noise. Add the PG
signal section. Update mechanical drawing, change the thickness of module to 0.402
inch.
2015-07-21
I
J.Yan
Output specs :
Shrink the output voltage set point, line regulation, load regulation range.
Update the waveform of ripple and noise/transient response/Startup&Shutdown.
Add tilt dimension in mechanical drawing, update recommended pad layout.
Output specs :
2015-11-16
2016-01-05
J
J.Yan
J.Yan
K
Shrink the output voltage set point, line regulation, load regulation range.
2016-01-22
2016-05-17
2018-02-11
2021-06-29
L
Update MTBF, FIT.
J.Yan
J.Yan
M
Add hot spot location.
AN
AP
Update the form.
F.Tao
Add object ID. Add thermal test airflow direction.
XF.Jiang
NUCLEAR AND MEDICAL APPLICATIONS - 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.
tech.support@psbel.com
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