Features
Regulated
Converters
Wide 2:1 Input Voltage Range
1.6kVDC Isolation
UL Certified
Efficiency up to 91%
Six-Sided Continuous Shield
No Minimum Load
PD-1
REV.: 1/2016www.recom-power.com
DC/DC Converter
3
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Description
The RP20-A series are ultraminiature 2:1 input voltage range power DC/DC converters in a case half
the size of industry standard 20W converters. Despite their small size, the RP20-A converters are
fully specified devices with output currents up to 4.5 Amps, up to 91% efficiency, no minimum load,
1600VDC isolation, a built-in Class A EMC filter and low ripple/noise figures. The outputs are also fully
protected against short circuits, overcurrent and overvoltage. The no load input current is particularly
low (only 4mA/6mA).The RP20-A series will find many uses in applications where board space and/or
board height is at a premium or in battery-powered systems where standby current is important.
E196683
20 Watt
1“ x 1“
Single & Dual
Output
RP20-A
Selection Guide
Part Number Input Output Output Input(1) Efficiency(1) Max. Capacitive
Voltage Range Voltage Current Current typ. Load(2)
[VDC] [VDC] [mA] [mA] [%] [µF]
RP20-123.3SA(3,4) 9-18 3.3 4500 1390 89 7000
RP20-1205SA(3,4) 9-18 5 4000 1873 89 5000
RP20-1212SA(3,4) 9-18 12 1670 1404 89 850
RP20-1215SA(3,4) 9-18 15 1330 1868 89 700
RP20-243.3SA(3,4) 18-36 3.3 4500 688 90 7000
RP20-2405SA(3,4) 18-36 5 4000 916 91 5000
RP20-2412SA(3,4) 18-36 12 1670 928 90 850
RP20-2415SA(3,4) 18-36 15 1330 913 91 700
RP20-483.3SA(3,4) 36-75 3.3 4500 344 90 7000
RP20-4805SA(3,4) 36-75 5 4000 463 90 5000
RP20-4812SA(3,4) 36-75 12 1670 464 90 850
RP20-4815SA(3,4) 36-75 15 1330 462 90 700
RP20-1212DA(3,4) 9-18 ±12 ±833 1872 89 ±500
RP20-1215DA(3,4) 9-18 ±15 ±667 1853 90 ±350
RP20-2412DA(3,4) 18-36 ±12 ±833 926 90 ±500
RP20-2415DA(3,4) 18-36 ±15 ±667 926 90 ±350
RP20-4812DA(3,4) 36-75 ±12 ±833 468 89 ±500
RP20-4815DA(3,4) 36-75 ±15 ±667 463 90 ±350
UL60950-1 Certified
Model Numbering
Ordering Examples
RP20-2405SA/P = 24V Input, 5V Output, Positive Logic CTRL pin and Trim pin fitted
RP20-4812DA-HC = 48V Input, ±12V Output, Heat-sink fitted
Input Voltage
Output Voltage
Single or Dual
RP20-__ __ _A/_ _
Package(4)
Control Logic(3)
Notes:
Note3: no suffix for standard part without Trim or CTRL
add suffix “P” for CTRL function with positive logic (1=ON, 0=OFF) and trim pin
add suffix “N” for CTRL function with negative logic (0=ON, 1=OFF) and trim pin
Note4: add suffix -HC for premounted Heat-sink and clips
Notes:
Note1: Values at nominal input voltage and full load
Note2: Test by minimum Vin and constant resistor load.
PD-2 REV.: 1/2016 www.recom-power.com
DC/DC Converter
RP20-A
Series
BASIC CHARACTERISTICS
Parameter Condition Min. Typ. Max.
Input Voltage Range
nom. Vin = 12V
nom. Vin = 24V
nom. Vin = 48V
9VDC
18VDC
36VDc
12VDC
24VDC
48VDC
18VDC
36VDC
75VDC
Under Voltage Lockout (UVLO)
Vin = 12V DC-DC ON
DC-DC OFF 8VDC
9VDC
Vin = 24V DC-DC ON
DC-DC OFF 16VDC
18VDC
Vin = 48V DC-DC ON
DC-DC OFF 33VDC
36VDC
Input Filter Pi-Type
Input Reflected Ripple(5) nominal Vin and full load 30mAp-p
Input Surge Voltage
Vin =12V, 100ms max.
Vin = 24V, 100ms max.
Vin = 48V, 100ms max.
25VDC
50VDC
100VDC
Start-up time Power up
Remote ON/OFF
30ms
30ms
Operating Frequency Range 3.3Vout, 5Vout
Others
248kHz
297kHz
275kHz
330kHz
303kHz
363kHz
Minimum Load 0%
Optional Output Trim(6) ±10%
Ripple and Noise
measured by 20Mhz bandwidth
with a 1µF M/C X7R and a 10µF T/C Single 75mVp-p
measured by 20Mhz bandwidth
with a 1µF M/C X7R and a 10µF T/C
for each output
Dual 100mVp-p
Remote ON/OFF(6)
Positive Logic DC-DC ON
DC-DC OFF
Open or 3.0V < Vr < 15V
Short or 0V < Vr < 1.2V
Negative Logic DC-DC ON
DC-DC OFF
Short or 0V < Vr < 1.2V
Open or 3.0V < Vr < 15V
Input current of Remote pin (CTRL) DC-DC OFF 2mA
DC-DC ON -0.5mA 1.0mA
continued on next page
Specifications measured at Ta = 25°C, nominal input voltage, full load otherwise noted
Notes:
Note5: Simulated source impedance of 12µH. 12µH inductor in series with +Vin.
Note6: The ON/OFF control function can be positive or negative logic. The pin voltage is referenced to -Vin pin.
If no suffix is specified, the control pin will be omitted.
Efficiency vs. Output Current Efficiency vs. Input Voltage
9Vin
12Vin
18Vin
Efficiency [%]
Output Current [%]
10
45
40
50
55
60
65
70
75
95
90
85
20 40 60 80 10030 50 70 90
80
Efficiency [%]
Input Voltage [VDC]
9
65
70
75
80
85
95
11 12 14 16 1810 13 15 17
90
RP20-1205SA
DC/DC Converter
Specifications measured at Ta = 25°C, nominal input voltage, full load otherwise noted
REGULATIONS
Parameter Condition Value
Output Voltage Accuracy ±1%
Voltage Adjustability Single ±10%
Line Voltage Regulation Single
Dual
±0.2%
±0.5%
Load Voltage Regulation
0% to 100% load Single
Dual
±0.2%
±1.0%
10% load to 90% load Single
Dual
±0.1%
±0.8%
Cross Regulation asymmetrical 25%<>100% load ±5%
Transient Response recovery time 25% load step change 250µs
continued on next page
RP20-A
Series
PD-3
REV.: 1/2016www.recom-power.com
Efficiency vs. Output Current
Efficiency vs. Output Current
Efficiency vs. Input Voltage
Efficiency vs. Input Voltage
18Vin
24Vin
36Vin
Efficiency [%]
Output Current [%]
10
40
45
50
55
60
65
70
75
90
95
20 40 60 80 10030 50 70 90
80
85
36Vin
48Vin
75Vin
Efficiency [%]
Output Current [%]
10
40
45
50
55
60
65
75
70
90
95
20 40 60 80 10030 50 70 90
80
85
Efficiency [%]
Input Voltage [VDC]
18
65
70
75
80
85
95
22 24 28 32 3620 26 30 34
90
Efficiency [%]
Input Voltage [VDC]
36
65
70
75
80
85
95
44 48 56 64 68 7540 52 60 72
90
RP20-2405SA
RP20-4805SA
continued on next page
PD-4 REV.: 1/2016 www.recom-power.com
DC/DC Converter
Specifications measured at Ta = 25°C, nominal input voltage, full load otherwise noted
RP20-A
Series
External Output Trimming
Trim up 1 2 3 4 5 6 7 8 9 10 %
Vout = 3.333 3.366 3.399 3.432 3.465 3.498 3.531 3.564 3.597 3.63 Volts
RU = 57.93 26.16 15.58 10.28 7.11 4.99 3.48 2.34 1.46 0.75 KOhms
Trim down 1 2 3 4 5 6 7 8 9 10 %
Vout = 3.267 3.234 3.201 3.168 3.135 3.102 3.069 3.036 3.003 2.97 Volts
RD = 69.47 31.23 18.49 12.12 8.29 5.74 3.92 2.56 1.50 0.65 KOhms
RP20-xx3.3S
Trim up 1 2 3 4 5 6 7 8 9 10 %
Vout = 5.05 5.10 5.15 5.20 5.25 5.30 5.35 5.4 5.45 5.50 Volts
RU = 36.57 16.58 9.92 6.58 4.59 3.25 2.30 1.59 1.03 0.59 KOhms
Trim down 1 2 3 4 5 6 7 8 9 10 %
Vout = 4.95 4.90 4.85 4.80 4.75 4.70 4.65 4.60 4.55 4.50 Volts
RD = 45.53 20.61 12.31 8.15 5.66 4.00 2.81 1.92 1.23 0.68 KOhms
Trim up 1 2 3 4 5 6 7 8 9 10 %
Vout = 12.12 12.24 12.36 12.48 12.60 12.72 12.84 12.96 13.08 13.20 Volts
RU = 367.91 165.95 98.64 64.98 44.78 31.32 21.70 14.49 8.88 4.39 KOhms
Trim down 1 2 3 4 5 6 7 8 9 10 %
Vout = 11.88 11.76 11.64 11.52 11.40 11.28 11.16 11.04 10.92 10.8 Volts
RD = 460.99 207.95 123.60 81.42 56.12 39.25 27.20 18.16 11.13 5.51 KOhms
Trim up 1 2 3 4 5 6 7 8 9 10 %
Vout = 15.15 15.3 15.45 15.60 15.75 15.90 16.05 16.20 16.35 16.50 Volts
RU = 404.18 180.59 106.06 68.80 46.44 31.53 20.88 12.90 6.69 1.72 KOhms
Trim down 1 2 3 4 5 6 7 8 9 10 %
Vout = 14.85 14.70 14.55 14.40 14.25 14.10 13.95 13.80 13.65 13.50 Volts
RD = 499.82 223.41 131.27 85.20 57.56 39.14 25.97 16.10 8.42 2.282 KOhms
RP20-xx05S
RP20-xx12S
RP20-xx15S
Output Voltage Trimming
Some single/dual output Powerline converters offer the feature of trimming the output voltage over a certain range around the nominal value by using
external trim resistors. No general equation can be given for calculating the trim resistors, but the following trimtables give typical values for chosing
these trimming resistors. If voltages between the given trim points are required, extrapolate between the two nearest given values to work out the
resis tor required or use a variable resistor to set the output voltage. Output can be externally trimmed by using the method shown below.
RU
6
5
RD
4
4
Trim up Trim down
DC/DC Converter
Specifications measured at Ta = 25°C, nominal input voltage, full load otherwise noted
RP20-A
Series
PD-5
REV.: 1/2016www.recom-power.com
Trim up 1 2 3 4 5 6 7 8 9 10 %
Vout = 24.24 24.48 24.72 24.96 25.20 25.44 25.68 25.92 26.16 26.40 Volts
RU = 218.21 98.10 58.07 38.05 26.04 18.03 12.32 8.03 4.69 2.02 KOhms
Trim down 1 2 3 4 5 6 7 8 9 10 %
Vout = 23.76 23.52 23.28 23.04 22.80 22.56 22.32 22.08 21.84 21.6 Volts
RD = 273.44 123.02 72.87 47.80 32.76 22.73 15.57 10.20 6.02 2.67 KOhms
Trim up 1 2 3 4 5 6 7 8 9 10 %
Vout = 30.30 30.60 30.90 31.20 31.50 31.80 32.10 32.40 32.70 33.00 Volts
RU = 268.29 120.64 71.43 46.82 32.06 22.21 15.10 9.91 5.81 2.53 KOhms
Trim down 1 2 3 4 5 6 7 8 9 10 %
Vout = 29.70 29.40 29.10 28.80 28.50 28.20 27.90 27.60 27.30 27.00 Volts
RD = 337.71 152.02 90.13 59.18 40.61 28.23 19.39 12.76 7.60 3.47 KOhms
RP20-xx12D
RP20-xx15D
Dual Output Voltage Trim Tables
PROTECTIONS
Parameter Condition Value
Short Circuit Protection (SCP) continuous, automatic recovery
Over Voltage Protection (OVP) Zener Diode Clamp
3.3Vout
5Vout
12Vout
15Vout
3.7VDC - 5.4VDC
5.6VDC - 7.0VDC
13.5VDC - 19.6VDC
16.8VDC - 20.5VDC
Over Load Protection (OLP) % Iout rated; Hiccup mode 150% typ.
Isolation Voltage I/P to O/P
I/P to O/P to case
1.6kVDC/1minute
1.0kVDC/1 minute
Isolation Resistance 500 VDC 1G min.
Isolation Capacitance 1500pF max.
Notes:
Note7: This power module is not internally fused. An input line fuse must always be used.
PD-6 REV.: 1/2016 www.recom-power.com
DC/DC Converter
Specifications measured at Ta = 25°C, nominal input voltage, full load otherwise noted
RP20-A
Series
SAFETY AND CERTIFICATIONS
Certificate Type (Safety) Condition Standard
UL General Safety E196683 UL60950-1 1st Ed.: 2003
C22.2 No. 60950 1st. Ed.: 2003
EMC Compliance Condition Standard / Criterion
EMI Standard (10) with external filter EN55022, Class A, Class B
ESD
Radiated Immunity
Fast Transient(11)
Surge(11)
Conducted Immunity
Air ±8kV and Contact ±6kV
10 V/m
±2kV
±2kV
10 Vr.m.s
EN61000-4-2, Criteria A
EN61000-4-3, Criteria A
EN61000-4-4, Criteria A
EN61000-4-5, Criteria A
EN61000-4-6, Criteria A
continued on next page
ENVIRONMENTAL
Parameter Condition
Value
Operating Temperature Range without derating
with derating
-40°C to +70°C
-40°C to +102°C
Maximum Case Temperature +105°C
Operating Humidity 5% - 95% RH
Temperature Coefficient ±0.02%/°C max.
Thermal Impedance Natural convection (20LFM)
Natural convection (20LFM) with Heat-sink
17,6°C/Watt
14.8°C/Watt
Thermal Shock MIL-STD-810F
Vibration MIL-STD-810F
MTBF MIL-HDBK-217F
Bellcore TR-NWT-000332(8)
1477 x 103 hours
1766 x 103 hours
-40 60 80
70 100
102 12040
200-20
0
20
8
40
60
80
100
Ambient Temperature [°C]
Output Power [%]
-40 60 80
76 100
102 12040
200-20
0
20
8
40
60
80
100
Ambient Temperature [°C]
Output Power [%]
Derating Graph(10)
Notes:
Note8: BELLCORE TR-NWT-000332. Case l: 50% Stress, Temperature at 40°C.
MIL-HDBK 217F Notice 2. Ta = 25°C, full load, (Ground, Benign, controlled environment).
Note9: Derating graphs are valid only for the shown part numbers. If you need detailed derating-information about a part-
number not shown here please contact our technical support service at techsupportAT@recom-power.com
RP20-2415SA RP20-2415SA with Heat-sink
DC/DC Converter
Specifications measured at Ta = 25°C, nominal input voltage, full load otherwise noted
RP20-A
Series
PD-7
REV.: 1/2016www.recom-power.com
Input
Input
DC
DC
Fuse
C3
C2C1
+VIN
+VOUT
-VOUT
-VIN
LOAD
C4
C5
+VOUT
COM
-VOUT
LOADLOAD
L1
Fuse
C2C1
L1
DC
DC
C3
+VIN
+VOUT
-VOUT
-VIN
C4
C5
Input
Input
DC
DC
Fuse
C3
C2C1
+VIN
+VOUT
-VOUT
-VIN
LOAD
C4
C5
+VOUT
COM
-VOUT
LOADLOAD
L1
Fuse
C2C1
L1
DC
DC
C3
+VIN
+VOUT
-VOUT
-VIN
C4
C5
EMI Filtering Class B
MODEL C1 C2 C3 C4/C5 L1
RP20-12xxSA 4.7µF/25V
1812 MLCC N/A N/A 470pF/2kV
1808 MLCC
CMC: 325µH
ref.: WE 744290321
ref.: CMC-06
RP20-24xxSA 4.7µF/25V
1812 MLCC N/A N/A 470pF/2kV
1808 MLCC
CMC: 325µH
ref.: WE 744290321
ref.: CMC-06
RP20-48xxSA 2.2µF/100V
1812 MLCC
2.2µF/100V
1812 MLCC
2.2µF/100V
1812 MLCC
470pF/2kV
1808 MLCC
CMC: 325µH
ref.: WE 744290321
ref.: CMC-06
DIMENSIONS and PHYSICAL CHARACTERISTICS
Parameter Type Value
Material
Case
Base
Potting
Nickel coated copper
FR4 PCB
Silicone (UL94 V-0)
Packaging Dimension (LxWxH) without Heat-sink
with Heat-sink
25.4 x 25.4 x 9.9mm
31.4 x 25.4 x 16.5mm
Packaging Weight without Heat-sink
with Heat-sink
15g
21.44g
continued on next page
Notes:
Note10: The standard modules meet EMI Class A or Class B with external components, see filter suggestions below.
Note11: An external input filter capacitor is required if the module has to meet EN61000-4-4, EN61000-4-5. The filter capacitor Recom
suggests: Nippon chemi-con KY series, 220µF/100V.
PD-8 REV.: 1/2016 www.recom-power.com
DC/DC Converter
Specifications measured at Ta = 25°C, nominal input voltage, full load otherwise noted
RP20-A
Series
Pin Connections
Pin # Single Dual
1 +Vin +Vin
2 -Vin -Vin
3 CTRL CTRL
4 +Vout +Vout
5 Trim Com
6 -Vout -Vout
Pin Pitch Tolerance ±0.25mm
Pin dimension tolerance ±0.1mm
XX.X ± 0.5mm
XX.XX ± 0.25mm
Dimension Drawing (mm)
Dimension Drawing (mm) with Heat-sink
4 6
1 2
Bottom View
Standard
4 6
1 2
Bottom View
CTRL version
5
3
25.4
5.6 9.9
20.32
25.4
Ø 1.0
20.32
2.54
20.32
5.08
10.16 10.16
5.08
2.54
Top View
Ø1.60 +0.15/-0
2.54
25.4
31.4
5.60 9.90
16.5
20.32
25.4
Ø 1.0 2.54
24.20
24.20
Top View
Heat-sink
5.85
PACKAGING INFORMATION
Parameter Type Value
Packaging Quantity without Heat-sink
with Heat-sink
Tube
Tray
8pcs.
20pcs.
Storage Temperature Range -55°C to +125°C
Storage Humidity 5% - 95% RH
The product information and specifications are subject to change without prior notice. RECOM products are not authorized for use in safety-critical applications (such as life support) without RECOM’s explicit written
consent. A safety-critical application is defined as an application where a failure of a RECOM product may reasonably be expected to endanger or cause loss of life, inflict bodily harm or damage property. The buyer
shall indemnify and hold harmless RECOM, its affiliated companies and its representatives against any damage claims in connection with the unauthorized use of RECOM products in such safety-critical applications.
DC/DC Converter
Specifications measured at Ta = 25°C, nominal input voltage, full load otherwise noted
RP20-A
Series
PD-9
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Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
RECOM:
RP20-2415DA/P RP20-4805SAW/N RP20-4812DA-HC RP20-2415SA/P-HC RP20-4812SAW RP20-4812DAW-HC
RP20-4812SA/P RP20-1212SA RP20-4815DA/N RP20-2415SAW-HC RP20-2412DA/P-HC RP20-4815DA/P-HC
RP20-1212DA/P RP20-1215DA/P-HC RP20-483.3SA RP20-2412SA-HC RP20-123.3SA-HC RP20-2415SA/N
RP20-243.3SAW/P RP20-1205SA/N-HC RP20-2415DAW/P-HC RP20-1212SA/P RP20-4815SA-HC RP20-
2412DAW/P-HC RP20-4812SAW/P RP20-2405SAW RP20-4815DAW-HC RP20-2412SA/N-HC RP20-4815SA/N-HC
RP20-123.3SA/N-HC RP20-483.3SAW/P-HC RP20-4815SAW/P RP20-2415DA RP20-4805SA RP20-4815DAW/N
RP20-2412DAW/N RP20-2405SA/N-HC RP20-1212DA/N-HC RP20-4815SAW/N-HC RP20-483.3SAW RP20-
243.3SA/N-HC RP20-483.3SA/P RP20-4815DAW/P-HC RP20-4812DA/P-HC RP20-123.3SA/N RP20-2405SAW/P
RP20-4805SAW/P-HC RP20-4812DAW/N-HC RP20-1215SA/N RP20-4805SA/P RP20-2405SA-HC RP20-4805SAW
RP20-2415SAW/N RP20-4815DA RP20-1215SA/P-HC RP20-2412DA/P RP20-1215DA RP20-2412SA/N RP20-
4812SA/N-HC RP20-1205SA-HC RP20-2415DAW RP20-2412SAW/N-HC RP20-2412DA RP20-243.3SA-HC RP20-
2415DAW/P RP20-4812DA/N RP20-2415SA RP20-4815SAW-HC RP20-4812SAW/N-HC RP20-1212SA/N-HC
RP20-4812SA-HC RP20-4815SA/N RP20-243.3SAW-HC RP20-483.3SA/N-HC RP20-2405SA/N RP20-
243.3SAW/N-HC RP20-243.3SA/N RP20-4815DA/P RP20-2412DAW RP20-4812DAW/N RP20-1215DA/P RP20-
2415SA/P RP20-2412SAW-HC RP20-1212DA-HC RP20-2415SAW/P-HC RP20-1205SA/N RP20-123.3SA/P-HC
RP20-4805SAW/P RP20-1215SA RP20-1212SA-HC RP20-4815SA/P-HC RP20-2412SA/P RP20-4812SA/P-HC
RP20-243.3SAW/N RP20-4805SA/N-HC RP20-4815DAW/P RP20-2415DA-HC RP20-2415DAW/N-HC RP20-
4815SAW/N RP20-4812DA