
Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302
Tel 201-432-0463
Fax 201-432-9542
www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
12 Vdc Input
0.9 Vdc - 5.0 Vdc/20 A Output
Non-Isolated
Fixed Frequency (275 kHz)
High Efficiency
High Power Density
Power Good Output Signal (open
collector)
Under-Voltage Lockout (UVLO)
Wide Trim Range
Converter Can Sink and Source
Current
OCP/SCP
Remote On/Off
Low Cost
Description
The Bel xRPF-20A1A0 is a new high density open frame non-isolated converter series for space sensitive
applications. Each model has a wide input range (10.2 Vdc - 13.8 Vdc) and offers a wide range of output voltage
(0.9 Vdc - 5.0 Vdc) with a 20 A load. An external resistor adjusts the output voltage from its pre-set value of 0.9
Vdc to any value up to the 5.0 Vdc maximum. Typical efficiency is 92% at Vo=5 Vdc, Vin=12 Vdc at full load.
Typical features include remote on/off, under-voltage lockout, over-current protection and short circuit protection.
Part Selection
Output
Voltage
Voltage
Current
Power
0.9 V - 5.0 V
12 V
100 W
Notes
: 1. Add “G” suffix at the end of the model number to indicate Tray Packaging.
3. All part numbers above indicate RoHS 6. Change the second letter "R" to "7" for RoHS 5 part numbers.
Absolute Maximum Ratings
Parameter
Min
Typ
Input Voltage (continuous)
-0.3 V
-
Output Enable Terminal Voltage
-0.3 V
-
Ambient Temperature
0
°
C
-
Storage Temperature
-40
°
C
-
Input Specifications
Parameter
Min
Typ
Input Voltage
10.2 V
-
Input Current (Source)
Vo=5.0 V
Vo=2.5 V
Vo=0.9 V
-
2.2 A
Input Current (Sink)
Vo=2.5 V
Vo=0.9 V
-
-0.97 A
Input
Max. Output
Max. Output
Typical
Efficiency
92%
Model Number
Vertical Mount
VRPF-20A1A0
Model Number
Horizontal Mount
0RPF-20A1A0
20 A
Max
13.8 V
13.8 V
80
°
C
125
°
C
Notes
Max
13.8 V
-
-
-
-
-
Notes
-
-
9.1 A
4.9 A
-
-3.44 A
Able to sink 20 A output current at any
output voltage up to and including 2.5
V.
Input Current (No Load)
-
95 mA
-
Remote Off Input Current
-
5 mA
10 mA
xRPF-20A1A0 RoHS Compliant Rev.A