20 Watt
2” x 1”
Single &
Dual Output
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Features
Selection Guide 12V, 24V and 48V Input Types
Part Number Input Output Output Input(4) Efficiency(5) Capacitive(6)
Range Voltage Current Current Load max.
VDC VDC mA mA %
RP20-123.3SF 9-18 3.3 5000 1719 84 13000µF
RP20-1205SF 9-18 5 4000 2008 87 6800µF
RP20-1212SF 9-18 12 1670 2062 85 2200µF
RP20-1215SF 9-18 15 1330 2052 85 755µF
RP20-243.3SF 18-36 3.3 5000 838 86 13000µF
RP20-2405SF 18-36 5 4000 980 89 6800µF
RP20-2412SF 18-36 12 1670 1006 87 2200µF
RP20-2415SF 18-36 15 1330 1002 87 755µF
RP20-483.3SF 36-75 3.3 5000 414 87 13000µF
RP20-4805SF 36-75 5 4000 490 89 6800µF
RP20-4812SF 36-75 12 1670 497 88 2200µF
RP20-4815SF 36-75 15 1330 500 87 755µF
RP20-1212DF 9-18 ±12 ±833 2032 86 ±680µF
RP20-1215DF 9-18 ±15 ±667 2034 86 ±450µF
RP20-2412DF 18-36 ±12 ±833 1004 87 ±680µF
RP20-2415DF 18-36 ±15 ±667 1005 87 ±450µF
RP20-4812DF 36-75 ±12 ±833 496 88 ±680µF
RP20-4815DF 36-75 ±15 ±667 502 87 ±450µF
* no suffix for CTRL function with Positive Logic (1=ON, 0=OFF), this is standard
* add /N for CTRL function with Negative Logic (0=ON, 1=OFF)
* add suffix -HC for premounted heatsink and clips
Ordering Examples
RP20-2405SF = 24V Input, 5V Output, Positive Logic CTRL pin fitted
RP20-4812DF/N-HC = 48V Input, ±12V Output, Negative Logic CTRL pin fitted, Heatsink fitted
Description
The RP20-F series DC/DC converters are certified to UL 60950-1 and to cUL 60950-1. This makes them ideal
for all telecom and industrial applications where approved safety standards are required.
The industry standard 2” x 1” package meets military standards for thermal shock and vibration tolerance.
UL-60950-1 Certified
E196683
RP20-F
POWERLINE
DC/DC-Converter
Please Read Application
Notes
RP20-F
REV: 0/2009 www.recom-electronic.com
P-46
POWERLINE
DC/DC-Converter
RP20-S_DF
Series
125
75
50
25
0
100
Ambient Temperature Range (°C)
-25 -10 0 50 60 80 90 100
Output Power (%)
Natural Convection
-40 70
65°C
125
75
50
25
0
100
Ambient Temperature Range (°C)
-25 -10 0 50 60 80 90 100
Output Power (%)
Natural Convection
-40 70
RP20-1205SF RP20-1205SF With Heat Sink
83
75
74
72
Input Voltage (V)
36
Efficiency (%)
76
77
78
79
80
81
82
73
40 55 60 75
45 50 65 70
Efficiency VS Input Voltage
82
72
70
60
Output Load (A)
1
Efficiency (%)
74
76
77
78
79
80
81
65
23456
Efficiency VS Output Load
RP20-481.5SF RP20-481.5SF
Typical Characteristics
Input Voltage Range 12V nominal input 9-18VDC
24V nominal input 18-36VDC
48V nominal input 36-75VDC
Input Filter (see Note 9) L-C Type
Input Voltage Variation dv/dt (Complies with ETS300 132 part 4.4) 5V/ms max
Input Surge Voltage (100 ms max.) 12V Input 36VDC
24V Input 50VDC
48V Input 100VDC
Input Reflected Ripple (nominal Vin and full load) (see Note 3) 20mAp-p
Start Up Time (nominal Vin and constant resistor load) 10ms typ.
Remote ON/OFF (see Note 7) DC-DC ON Open or 3.0V < Vr < 12V
DC-DC OFF Short or 0V < Vr < 1.2V
Remote OFF input current Nominal input 2.5mA
Output Power 20W max.
Output Voltage Accuracy (full Load and nominal Vin) ±1%
Voltage Adjustability ±10%
continued on next page
Specifications (typical at nominal input and 25°C unless otherwise noted)
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 info@recom-development.at
Derating Graph (Ambient Temperature)
REV:0/2009 P-47
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RP20-F
Specifications (typical at nominal input and 25°C unless otherwise noted)
POWERLINE
DC/DC-Converter RP20-S_DF
Series
Minimum Load (see Note 1) Single 0%
Dual 10% of full load
Line Regulation (low line, high line at full load) ±0.2%
Load Regulation (25% to 100% full load) ±0.5%
Cross Regulation (asymmetrical 25% <>100% load) Dual ±5%
Ripple and Noise (20MHz bandwith) Single 1.5, 1.8, 2.5, 3.3V 60mVp-p
(Measured with a 1004pF/50V MLCC) Single 5, 12, 15V 75mVp-p
Dual 5, 12, 15V 100mVp-p
Temperature Coefficient ±0.02%/°C max.
Transient Response (25% load step change) 500µs
Over Voltage Protection 1.5, 1.8, 2.5, 3.3V 3.9V
Zener diode clamp (only single) 5V 6.2V
12V 15V
15V 18V
Over Load Protection (% of full load at nominal Vin) 150% typ
Undervoltage Lockout none
Short Circuit Protection Hiccup, automatic recovery
Efficiency see „Selection Guide“ table
Isolation Voltage Input to Output 1600VDC min.
Input (Output) to case 1600VDC min.
Isolation Resistance 1 GΩmin.
Isolation Capacitance 1000pF max.
Operating Frequency 500kHz typ.
Operating Temperature Range -40°C to +85°C(with derating)
Maximum Case Temperature +100°C
Storage Temperature Range -55°C to +125°C
Thermal Impedance Natural convection 12°C/Watt
(see Note 8) Natural convection with Heat Sink 10°C/Watt
Thermal Shock MIL-STD-810D
Vibration 10-55Hz, 10G, 30 Min. along X, Y and Z
Relative Humidity 5% to 95% RH
Case Material Nickel plated copper
Base Material Non-conductive black plastic
Potting Material Epoxy (UL94-V0)
Conducted Emissions (see Note 10) EN55022 Class A
Radiated Emissions EN55022 Class A
ESD EN61000-4-2 Perf. Criteria B
Radiated Immunity EN61000-4-3 Perf. Criteria B
Fast Transient EN61000-4-4 Perf. Criteria B
Surge EN61000-4-5 Perf. Criteria B
Conducted Immunity EN61000-4-6 Perf. Criteria B
Weight 27g
Dimensions 50.8 x 25.4 x 10.2mm
MTBF (see Note 2) 1791 x 103hours
RP20-F
REV: 0/2009 www.recom-electronic.com
P-48
Notes :
POWERLINE
DC/DC-Converter
RP20-S_DF
Series
1. The RP20-S_DF series requires a minimum of 10% loading on the output to maintain specified regulation. Operation under
no-load condition will not damage these devices, however they may not meet all listed specification.
2. BELLCORE TR-NWT-000332. Case l: 50% Stress, Temperature at 40°C (Ground fixed and controlled environment).
3. Simulated source impedance of 12µH. 12µH inductor in series with +Vin.
4. Maximum value at nominal input voltage and full load of standard type.
5. Typical value at nominal input voltage and full load.
6. Test by minimum Vin and constant resistor load.
7. The ON/OFF control function can be positive or negative logic. The pin voltage is referenced to negative input.
Positive logic ON/OFF is standard, no suffix (Ex. RP20-2405SF)
Negative logic ON/OFF is marked with suffix-N (Ex. RP20-2405SF/N).
8. Heat sink is optional and P/N: 7G-0020C. Powerline DC/DC Converters can be ordered with pre-mounted heatsinks including antivibration fixing clips
(add suffix -HC). See Application Notes for heatsink details.
9. An external filter capacitor is required for normal operation. The capacitor should be capable of handling 1A ripple current for 48V/24V models.
RECOM suggest: Nippon chemi-con KY series, 220µF/100V, ESR 90m Ω.
10.See application notes for Class B common mode filter suggestion.
Package Style and Pinning (mm)
3
1
2
5
4
20.30
50.80
dia.
1.0
10.20
10.20
12.70
15.20
Bottom View
6
2.50
5.10
25.40
5.6
10.20
3rd angle
projection
Trim Up
RU
Trim Down
RD
5
4
4
3
External Output Trimming
Output can be externally trimmed by using the method
shown below. See Application Notes for details.
Pin Connections
Pin # Single Dual
1 +Vin +Vin
2 -Vin -Vin
3 +Vout +Vout
4 Trim Com
5 -Vout -Vout
6 CTRL CTRL
Pin Pitch Tolerance ±0.35 mm
REV:0/2009 P-49
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RP20-F
