Features
•
•
•
•
•
•
Regulated
Converter
4:1 wide input voltage range
1.6kVDC Isolation
UL, IEC/EN60950 and EN50155 certified
Efficiency up to 88%
OVP, OCP & OTP
+105°C max. case temperature
Description
DC/DC Converter
RPA20-AW
20 Watt
3
1“ x 1“
Single and Dual
Output
YEA R
y
arrant
w
The RPA20-AW series are high power density, wide input voltage range 20W DC/DC
converters in an industry standard 1”x1” case size. Despite their small size, the RPA20-AW converters
are fully specified devices with output currents up to 6Amps, up to 88% efficiency, no minimum load,
1600VDC isolation, tight regulation and low ripple/noise figures. The outputs are also fully protected
against over-temperature, short circuits, overcurrent and overvoltage and the single output version
offers a ±10% trim range. A heatsink option is available to extend the operating temperature range.
The converters are UL and EN50155 certified and will find many uses in railway and industrial
applications where board space is at a premium.
T
T
compliant
M
TS
TS
CONVER
REACH
CO
C
M
S
S
10 from 10
PL
U
D
IA N
T PRO
O
R
R
M
C
C
CONVER
RE
M
E
O
RoHS 2 +
compliant
CO
Notes:
Note1: tested at nominal Vin, full load and at +25°C ambient
C
E
Part Number
Input
Output
Output
Input (1) Efficiency (1) Max. Capacitive
Voltage Range Voltage
Current
Current
typ.
Load
[VDC] [VDC] [mA] [mA] [%]
[µF]
RPA20-243.3SAW (2,3) 9-36
3.3 6000 948 87
10000
RPA20-2405SAW (2,3) 9-36
5 4000 947 88
10000
RPA20-2412SAW (2,3) 9-36 12 1670 949 88
1000
RPA20-2415SAW (2,3) 9-36 15 1330 945 88
1000
RPA20-2412DAW (2,3) 9-36 ±12 ±830 949 88
±1000
RPA20-2415DAW (2,3) 9-36 ±15 ±670 945 88
±680
RE
Selection Guide
PL
U
D
IA N
T PRO
E224736
Model Numbering
RPA20-__ __ _AW/_ _
nom. Input Voltage
nom. Output Voltage
“Package (3)”
UL60950-1 certified
IEC/EN60950-1 certified
EN50155 certified
CB report
“CTRL Logic (2)”
Single or Dual
Notes:
Note2: no suffix for standard part without CTRL pin, trim pin fitted
add suffix “P” for positive CTRL function (1=ON, 0=OFF), trim pin fitted
add suffix “N” for negative CTRL function (0=ON, 1=OFF), trim pin fitted
trim pin is only available for single outputs
Note3: add suffix “-HC” for glued Heat-sink (compatible with all other suffixes)
Ordering Examples
RPA20-243.3SAW = 24V input, 3.3V output, single, no CTRL pin
RPA20-2405DAW/P = 24V input, 5V output, dual, positive CTRL function
RPA20-2415SAW-HC = 24V input, 15V output, single, no CTRL pin, glued Heat-sink
RPA20-2415DAW/N-HC = 24V input, 15V output, dual, negative CTRL function, glued Heat-sink
www.recom-power.com
REV.: 8/2020
PD-1
RPA20-AW
DC/DC Converter
Series
Specifications (measured @Ta = 25°C, resistive load, nom. Vin and rated Iout unless otherwise noted)
BASIC CHARACTERISTICS
Parameter
Condition
Min.
Typ.
Max.
Input Voltage Range
nom. Vin= 24VDC
9VDC
24VDC
36VDC
Input Surge Voltage
100ms max.
Under Voltage Lockout (UVLO)
DC-DC ON
DC-DC OFF
Internal Input Filter
Pi-Type
50VDC
8VDC
7VDC
Quiescent Current
refer to “OUTPUT VOLTAGE TRIMMING”
Output Voltage Trimming
Minimum Load
8.5VDC
7.5VDC
9VDC
8VDC
20mA
55mA
-10%
+10%
0%
Power up
ON/OFF CTRL
Start-up time
8ms
16ms
Positive Logic
DC-DC ON
DC-DC OFF
Open or 2.4VDC < VCTRL < 10VDC
Short or 0VDC < VCTRL< 0.8VDC
Negative Logic
DC-DC ON
DC-DC OFF
Short or 0VDC < VCTRL < 0.8VDC
Open or 2.4VDC < VCTRL < 10VDC
6mA
ON/OFF CTRL
Input Current of CTRL Pin
Internal Operating Frequency
550kHz
Output Ripple and Noise
20MHz BW, 10µF tantalum capacitor and 1µF ceramic capacitor
50mVp-p
RPA20-243.3SAW
Power Dissipation vs. Output Current
Efficiency vs. Output Current
100
4.5
90
4
3.5
70
Power Dissipation
Efficiency [%]
80
60
50
40
30
9Vin
24Vin
36Vin
20
10
0
0
10
20
30
40
50
60
70
80
90
3
2.5
2
1.5
9Vin
24Vin
36Vin
1
0.5
0
100
0
1
Output Current [%]
5.5
90
5
80
4.5
70
60
50
40
30
9Vin
24Vin
36Vin
20
10
0
10
20
30
40
50
60
4
5
6
Power Dissipation vs. Output Current
Efficiency vs. Output Current
100
0
3
Output Current [A]
Power Dissipation
Efficiency [%]
RPA20-2405SAW
2
70
80
90
4
3.5
3
2.5
2
1.5
9Vin
24Vin
36Vin
1
0.5
100
Output Current [%]
0
0
0.5
1
1.5
2
2.5
3
3.5
4
Output Current [A]
continued on next page
www.recom-power.com
REV.: 8/2020
PD-2
RPA20-AW
DC/DC Converter
Series
Specifications (measured @Ta = 25°C, resistive load, nom. Vin and rated Iout unless otherwise noted)
RPA20-2412SAW
5.5
90
5
80
4.5
70
Power Dissipation
Efficiency [%]
Power Dissipation vs. Output Current
Efficiency vs. Output Current
100
60
50
40
30
9Vin
24Vin
36Vin
20
10
0
0
10
20
30
40
50
60
70
80
4
3.5
3
2.5
2
1.5
9Vin
24Vin
36Vin
1
0.5
90
0
100
0
0.3 0.5 0.7 0.9 1.1 1.3 1.5 1.67
Output Current [%]
Output Current [A]
RPA20-2415SAW
5.5
90
5
80
4.5
70
Power Dissipation
Efficiency [%]
Power Dissipation vs. Output Current
Efficiency vs. Output Current
100
60
50
40
30
9Vin
24Vin
36Vin
20
10
0
0
10
20
30
40
50
60
70
80
90
4
3.5
3
2.5
2
1.5
9Vin
24Vin
36Vin
1
0.5
0
100
0
Output Current [%]
RPA20-2412DAW
70
4
Power Dissipation
Efficiency [%]
5
4.5
60
50
40
30
9Vin
24Vin
36Vin
20
10
10
20
30
40
50
60
0.9
1.1
1.3
Power Dissipation vs. Output Current
80
0
0.7
5.5
90
0
0.5
Output Current [A]
Efficiency vs. Output Current
100
0.3
70
80
90
3.5
3
2.5
2
1.5
9Vin
24Vin
36Vin
1
0.5
100
Output Current [%]
0
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7
0.83
Output Current [A]
continued on next page
www.recom-power.com
REV.: 8/2020
PD-3
RPA20-AW
DC/DC Converter
Series
Specifications (measured @Ta = 25°C, resistive load, nom. Vin and rated Iout unless otherwise noted)
RPA20-2415DAW
5.5
90
5
80
4.5
70
Power Dissipation
Efficiency [%]
Power Dissipation vs. Output Current
Efficiency vs. Output Current
100
60
50
40
30
9Vin
24Vin
36Vin
20
10
0
0
10
20
30
40
50
60
70
80
4
3.5
3
2.5
2
1.5
9Vin
24Vin
36Vin
1
0.5
90
0
100
0
0.1
Output Current [%]
0.2
0.3
0.4
0.5
0.6
0.67
Output Current [A]
OUTPUT VOLTAGE TRIMMING
Output Voltage Trimming
RPA20-AW converters offer the feature of trimming the output voltage over a certain range around the nominal value by using external trim
resistors. The values for trim resistors shown in trim tables below are according to standard E96 values; therefore, the specified voltage may
slightly vary.
Trim up
Trim down
-Vout
Trim
RU
Trim
RD
+Vout
RPA20-243.3SAW
Trim up
1
2
3
4
5
6
7
8
9
10
[%]
Vout =
3.33
3.36
3.39
3.43
3.46
3.49
3.53
3.56
3.59
3.63
[VDC]
RU =
402
169
100
75
47.5
34.8
26.1
17.8
12.1
8.06
[kΩ]
1
2
3
4
5
6
7
8
9
10
[%]
Vout =
3.27
3.23
3.20
3.17
3.14
3.10
3.07
3.04
3.0
2.97
[VDC]
RD =
402
191
113
75
52.3
39.2
26.7
20
12.1
8.06
[kΩ]
Trim down
RPA20-2405SAW
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
5.40
5.45
5.50
[VDC]
RU =
604
243
147
95.3
68.1
39.2
34.8
22.1
15
8.06
[kΩ]
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
[VDC]
RD =
604
287
169
124
105
78.7
54.9
39.2
15
0.5
[kΩ]
RPA20-2412SAW
Trim up
1
2
3
4
5
6
7
8
9
10
[%]
Vout =
12.12
12.24
12.36
12.48
12.6
12.72
12.84
12.96
13.08
13.20
[VDC]
604
267
162
105
75
499
40.2
24.9
18.2
10
[kΩ]
1
2
3
4
5
6
7
8
9
10
[%]
11.88
11.76
11.64
11.52
11.40
11.28
11.16
11.04
10.92
10.80
[VDC]
750
309
200
124
45.3
32.4
20
12.1
[kΩ]
RU =
Trim down
Vout =
RD =
www.recom-power.com
90.9
64.9
continued on next page
REV.: 8/2020
PD-4
RPA20-AW
DC/DC Converter
Series
Specifications (measured @Ta = 25°C, resistive load, nom. Vin and rated Iout unless otherwise noted)
RPA20-2415SAW
Trim up
1
2
3
4
5
6
7
8
9
10
[%]
Vout =
15.15
15.30
15.45
15.60
15.75
15.90
16.05
16.20
16.35
16.50
[VDC]
RU =
1000
243
200
130
90.9
61.9
40.2
30.1
24.9
10
[kΩ]
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
[VDC]
RD =
1000
348
210
140
95.3
68.1
45.3
30.1
18.2
8.06
[kΩ]
REGULATION
Parameter
Condition
Value
Output Accuracy
±1.0% typ., ±2.0% max.
Line Regulation
low line to high line, full load
single
dual
Load Regulation
3.3Vout
5Vout
12Vout, 15Vout
±12Vout, ±15Vout
Cross Regulation
asymmetrical 25%100% load
Transient Response
±0.1% typ., ±0.2% max.
±0.1% typ., ±0.5% max.
±0.3%
±0.2%
±0.1%
±1.0%
±2.0% typ., ±3.0% max.
50-75%, full load, 0.1A/µs
±3.0% typ.
25% load step change
250µs typ.
PROTECTIONS
Parameter
Condition
Short Circuit Protection (SCP)
Value
below 100mΩ
continuous, auto recovery
Over Voltage Protection (OVP)
115%-150% Output Voltage, Hiccup, auto recovery
Over Current Protection (OCP)
110%-160% Output Current, Hiccup
115°C ±5°C
Over Temperature Protection (OTP)
Isolation Voltage (4)
Isolation Resistance
I/P to O/P
tested for 1 minute
1.6kVDC
10MΩ min.
Isolation Capacitance
1100pF typ.
Insulation Grade
basic
Notes:
Note4: For repeat Hi-Pot testing, reduce the time and/or the test voltage
Note5:
Refer to local safety regulations if input over-current protection is also required. Recommended fuse: 3A slow blow type
ENVIRONMENTAL
Parameter
Operating Temperature Range
Condition
Value
refer to “Thermal Calculation”
(6)
Maximum Case Temperature
+105°C
Temperature Coefficient
0.02%/K
refer to “Table 1: Thermal Impedance”
Thermal Impedance
Operating Altitude
Operating Humidity
2000m
non-condensing
95% RH
Shock
30G, 11ms, 3 times along X,Y and Z axis
Vibration
MTBF
10-500Hz, 2.4G, 30mins along X,Y and Z axis
according to Telcordia SR332 3
+25°C
5800 x 103 hours
continued on next page
www.recom-power.com
REV.: 8/2020
PD-5
RPA20-AW
DC/DC Converter
Series
Specifications (measured @Ta = 25°C, resistive load, nom. Vin and rated Iout unless otherwise noted)
Table 1: Thermal Impedance
without Heatsink
airflow
[m/s]
0.1
0.2
0.5
1.0
1.5
2.0
with Heatsink
Rth without PCB Rth with PCB
[K/W]
[K/W]
17.8
12.5
16.0
11.2
14.0
9.7
10.0
7.1
8.3
5.8
6.3
4.4
(6)
Rth without PCB Rth with PCB (6)
[K/W]
[K/W]
16.0
11.3
14.4
10.1
12.6
8.7
9.0
6.4
7.5
5.2
5.7
4.0
Notes:
Note6:Test PCB: 160x100mm 105µm (Eurocard), double layer
Thermal Calculation
choose your model:
choose your model:
RPA20-2405SAW (with PCB (6) )
• Load conditions in application (e.g. 100%)
• Airflow conditions in application (e.g. 0.5m/s)
• use Rth from Table1 (9.7K/W)
Calculation:
RPA20-2405SAW-HC (with PCB (6) )
• Load conditions in application (e.g. 100%)
• Airflow conditions in application (e.g. 0.5m/s)
• use Rth from Table1 (8.7K/W)
Calculation:
Iout = 100%
Rth = 9.7K/W
PDISS = 2.8W
TCASEmax = 105°C
TOVER = Rth x PDis = 9.7K/W x 2.8W
TOVER = Rth x PDis = 8.7K/W x 2.8W
= 27.2°C
TAMBmax = TCASEmax - TOVER = 105°C - 27.2°C = 77.8°C
100
90
90
80
80
70
70
Output Power [%]
Output Power [%]
RPA20-24xxSAW-HC
100
60
50
30
20
10
0
-40
Natural Convection (0.1m/s)
0.2m/s
0.5m/s
1.0m/s
1.5m/s
2.0m/s
20
40
60
50
40
30
20
10
60
= 24.4°C
TAMBmax = TCASEmax - TOVER = 105°C - 21.3°C = 80.6°C
RPA20-24xxSAW
40
Iout = 100%
Rth = 8.7K/W
PDISS = 2.8W
TCASEmax = 105°C
80
77.8
0
-40
100 110
Natural Convection (0.1m/s)
0.2m/s
0.5m/s
1.0m/s
1.5m/s
2.0m/s
20
Ambient Temperature [°C]
40
60
80
80.6
100 110
Ambient Temperature [°C]
SAFETY AND CERTIFICATIONS
Certificate Type (Safety)
Report / File Number
Information Technology Equipment - General Requirements for Safety
E224736-A39 + A40
Information Technology Equipment - General Requirements for Safety
(CB Scheme)
E224736-A39-CB + A40-CB
Information Technology Equipment - General Requirements for Safety
Railway applications – Electronic equipment used on rolling stock
EAC
Standard
UL60950-1, 2nd Edition, 2014
CSA C22.2 No. 60950-1-07, 2nd Edition, 2014
IEC60950-1:2005, 2nd Edition + A2:2013
EN60950-1:2006 + A2:2013
15100175 001, 15100176 001
RU-AT.49.09571
EN50155:2007, Clause 5.4 and 5.5
TP TC 004/2011
RoHS 10/10, 2011/65/EU + AM-2015/863
RoHS2
continued on next page
www.recom-power.com
REV.: 8/2020
PD-6
RPA20-AW
DC/DC Converter
Series
Specifications (measured @Ta = 25°C, resistive load, nom. Vin and rated Iout unless otherwise noted)
EMC Compliance
Condition
Standard / Criterion
with external filter
(see filter suggestion below)
Electromagnetic compatibility of multimedia equipment - Emission requirements
EN55032, Class A
Railway applications - Electromagnetic compatibility
Part 3-2: Rolling stock - Apparatus
Specification for radio disturbance and immunity measuring apparatus and
methods Part 2-1: Methods of measurement of disturbances and immunity – Conducted disturbance measurements
Specification for radio disturbance and immunity measuring apparatus and
methods Part 2-3: Methods of measurement of disturbances and immunity –
Radiated disturbance measurements
EN50121-3-2:2015
EN55016-2-1:2009
EN55016-2-3:2010
ESD Electrostatic discharge immunity test
Air ±8kV, Contact ±6kV
EN61000-4-2:2009, Criteria A
Radiated, radio-frequency, electromagnetic field immunity test
20V/m, 80-1000MHz
10V/m, 1.4-2.0GHz
5V/m, 2.0-2.7GHz
3V/m, 5.1-6.0GHz
EN61000-4-3:2006, Criteria A
Fast Transient and Burst Immunity
DC Power Port ±2kV
IEC61000-4-4:2004, Criteria A
Surge Immunity
DC Power Port ±1kV
EN61000-4-5:2006, Criteria A
DC Power Port 10V
EN61000-4-6:2009, Criteria A
Immunity to conducted disturbances, induced by radio-frequency fields
EMC Filtering according to EN50121-3-2 and EN55032 Class A
+Vin
L1
F1
D1(7)
+Vin
+Vout
-Vin
-Vout
+Vout
C1
-Vin
-Vout
Notes:
Note7: Diode is only needed for EN50155
C1
L1
47µF/50V
electrolyte capacitor
1µH choke
DIMENSIONS and PHYSICAL CHARACTERISTICS
Parameter
Material
Dimensions (LxWxH)
Weight
Type
Value
case
baseplate
potting
without Heat-sink
with Heat-sink
al alloy, anodize black
non-conductive FR4
silicone (UL94 V-0)
25.4 x 25.4 x 10.2mm
25.4 x 25.4 x 16.8mm
without Heat-sink
with Heat-sink
17g typ.
21g typ.
continued next page
www.recom-power.com
REV.: 8/2020
PD-7
RPA20-AW
DC/DC Converter
Series
Specifications (measured @Ta = 25°C, resistive load, nom. Vin and rated Iout unless otherwise noted)
Dimension Drawing (mm)
25.4
10.2
25.4
5.60
Ø 1.0±0.1
Recommended Footprint Details
2.54
20.32
6 x Ø1.5
7.62
3
2.54
2
5
10.16
2
10.16
1 Bottom View
4
3
Top View
5
1
Single
Dual
1
+Vin
+Vin
2
-Vin
-Vin
3
CTRL
(2)
-Vout
CTRL (2)
-Vout
5
Trim
Com
6
+Vout
+Vout
Pin Pitch Tolerance ±0.25mm
xx.x= ±0.5mm
xx.xx= ±0.25mm
6
4
Pin #
4
12.7
2.54
5.08
6
Pin Connections
25.4
Heat-sink Dimension Drawing (mm)
16.8
25.4
5.60
Ø 1.0
2.54
20.32
REV.:
3 8/2020
1 Bottom View
2.54
6
10.16
5.08
2.54
www.recom-power.com
5 x Ø1.5
2
Top View
4
PD-8
RPA20-AW
DC/DC Converter
Series
Specifications (measured @Ta = 25°C, resistive load, nom. Vin and rated Iout unless otherwise noted)
PACKAGING INFORMATION
Parameter
Packaging Dimensions (LxWxH)
Type
tube
Value
without Heat-sink
with Heat-sink
Packaging Quantity
10pcs
Storage Temperature Range
Storage Humidity
285.0 x 27.6 x 19.0mm
285.0 x 27.6 x 25.8mm
-55°C to +125°C
non-condensing
5% - 95% RH
The product information and specifications may be subject to changes even without prior written notice.The product has been designed for various applications; its suitability lies in the responsibility of each customer. The
products are not authorized for use in safety-critical applications without RECOM’s explicit written consent. A safety-critical application is an application where a failure may reasonably be expected to endanger or cause
loss of life, inflict bodily harm or damage property. The applicant 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.
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REV.: 8/2020
PD-9
