• Sixteenth brick format
• 4:1 input voltage range
• 2.25kV basic isolation
Features
DC/DC Converter
• Remote ON/OFF and trim pins
• UVLO, OTP, OVP, OCP and SCP
• Efficiency up to 91%
Regulated
Converter
RPA50S-W
Description
50Watt
1/16 Brick
Single Output
The RPA50S is a low cost 50W DC/DC converter in industry standard 1/16th brick format
(33mm x 23mm) and pinning. The 4:1 input range covers 24V, 28V or 48V nominal input voltages
and the output voltage options are 3.3V, 5V or 12V with +10%/-20% trim. Output power is 40W from
18-75V or 50W from 36-75V. The efficiency is particularly high (88-91%) to permit full load operation
from -40°C up to +54°C ambient temperature with only free air convection and up to 85°C with forced
air cooling. The isolation voltage is 2.25kVDC/1 minute (basic insulation grade). Applications include
demanding industrial power supplies, telecom and PoE circuits.
3
Selection Guide
Part
Number
nom. Input
Voltage Range
[VDC]
Output
Voltge
[VDC]
Output
Current
[A]
Efficiency
max.(1)
[%]
Max. Capacitive
typ. Load (2)
[µF]
RPA50S-483.3SW/P
RPA50S-4805SW/P
RPA50S-4812SW/P
18-75
18-75
18-75
3.3
5
12
15
10
4.2
90.5
91
89
10000
5000
2200
RoHS2
+
REACH
compliant
compliant
10 from 10
Notes:
E224736
Note1: Efficiency is tested at nominal input and full load at +25°C ambient
Note2: Max. Cap Load is tested at nominal input and full resistive load
Model Numbering
UL60950-1 certified
IEC/EN60950-1 certified
RPA50S-__ __ SW/P
Input Voltage
“Positive CTRL logic”
Output Voltage
Single
Ordering Examples
RPA50S-4805SW/P = 48V Input, 5V Output, Single, Pos. CTRL function
Specifications (measured @ Ta = 25°C, nom. Vin, full load and after warm-up unless otherwise stated)
BASIC CHARACTERISTICS
Parameter
Condition
Min.
Typ.
Max.
Internal Input Filter
Input Voltage Range
Input Surge Voltage
Pi-Type
nom. Vin = 48V
100ms
18VDC
48VDC
75VDC
100VDC
DC-DC ON
DC-DC OFF
16VDC
15VDC
17VDC
16VDC
18VDC
17VDC
Under Voltage Lockout (UVLO)
Input Current Range
18Vin
3.9A
3.3Vout
5Vout
12Vout
30mA
40mA
20mA
Quiescent Current
60
50
40
30
20
10
0
18
24
36
48
75
Input Voltage [V]
continued on next page
www.recom-power.com
REV.: 3/2020
PB-1