NON-ISOLATED DC/DC CONVERTERS
10.8 Vdc - 13.2 Vdc Input 0.6 Vdc - 5.0 Vdc/80 A Output
VRP4-80A1Ax
RoHS Compliant
Rev.B
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Non-Isolated
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Output Over-Voltage Shutdown
OCP/SCP
High Efficiency
Fixed Switching Frequency
Low Cost
Low Output Ripple
Power Good Signal
Remote On/Off
Excellent Thermal Performance
Output Voltage Trim
Current Share
Over Temperature Protection
Description
The VRP4-80A1Ax is a non-isolated dc/dc converter that operates from a nominal 12 Vdc source. This unit can
provide a precisely regulated output voltage from 0.6 Vdc to 5.0 Vdc and can deliver up to 80 A of output current.
This unit is designed to be highly efficient and low cost. The converter is provided in an industry standard
package.
Part Selection
Output
Input Voltage
Max. Output Max. Output Typical Efficiency
Model Number Model Number
Voltage
Current
Power
(Vo=3.3 Vdc)
Active High
Active High
VRP4-80A1AB1
0.6 V - 5.0 V
10.8 V - 13.2 V
80 A
400 W
93%
VRP4-80A1A0
Notes: 1. VRP4-80A1A0 and VRP4-80A1AB are with different heatsink.
2. All part numbers above indicate RoHS 6. Change the second letter "R" to "7" for RoHS 5 part numbers.
3. Add “G” suffix at the end of the model numbers listed above to indicate “Tray Packaging”.
Absolute Maximum Ratings
Parameter
Min
Typ
Max
Notes
Input Voltage (continuous)
-0.3 V
-
15 V
Output Enable Terminal Voltage
Ambient Temperature
-0.3 V
0 °C
-
-
-
15 V
70 °C
125 °C
Storage Temperature
-55 °C
Input Specifications
Parameter
Min
Typ
Max
Notes
Input Voltage
10.8 V
12 V
-
13.2 V
40 A
Input Current (full load)
-
-
With simulated source impedance of 1
uH, 5 Hz to 20 MHz. Use a 1000 uF/16 V
electrolytic capacitor with ESR=0.1 ohm
max, at 100 kHz at 25°C.
Input Reflected Ripple Current (pk-pk)
20
5
35
Input Reflected Ripple Current (rms)
-
10
I2t Inrush Current Transient
Turn-on Voltage Threshold
Under Voltage Threshold
-
-
-
-
1 A2s
10.6 V
10 V
10.2 V
9.5 V
Note: All specifications are typical at 25 °C unless otherwise stated.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com