NON-ISOLATED DC/DC CONVERTERS
10.8 Vdc - 13.2 Vdc Input
0.84 Vdc - 5.0 Vdc/80 A Output
VRP4-80A1AB
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•
•
•
•
•
•
Non-Isolated
High Efficiency
RoHS Compliant
•
•
•
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OCP/SCP
Rev.B
Output Over-Voltage Shutdown
Low Output Ripple
Power Good Signal
Remote On/Off
Over Temperature Protection
Fixed Switching Frequency
Low Cost
Excellent Thermal Performance
Output Voltage Trim
Current Share
Description
The VRP4-80A1AB 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 0.84 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 Voltage
0.84 V - 5.0 V
Input Voltage
10.8 V - 13.2 V
Max. Output
Current
80 A
Max. Output
Power
400 W
Typical Efficiency
(Vo=3.3 Vdc)
93%
Model Number
Active High
VRP4-80A1AB
Notes:
1. All part numbers above indicate RoHS 6. Change the second letter "R" to "7" for RoHS 5 part numbers.
2. Add “G” suffix at the end of the model numbers listed above to indicate “Tray Packaging”.
Absolute Maximum Ratings
Parameter
Input Voltage (continuous)
Output Enable Terminal Voltage
Ambient Temperature
Storage Temperature
Min
-0.3 V
-0.3 V
0
°C
-55
°C
Typ
-
-
-
-
Max
15 V
15 V
70
°C
125
°C
Notes
Input Specifications
Parameter
Input Voltage
Input Current (full load)
Input Reflected Ripple Current (pk-pk)
Input Reflected Ripple Current (rms)
I t Inrush Current Transient
Turn-on Voltage Threshold
Under Voltage Threshold
2
Min
10.8 V
-
-
-
-
-
-
Typ
12 V
-
20
5
-
10.2 V
9.5 V
Max
13.2 V
40 A
35
10
1A s
10.6 V
10 V
2
Notes
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.
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
NON-ISOLATED DC/DC CONVERTERS
10.8 Vdc - 13.2 Vdc Input
0.84 Vdc - 5.0 Vdc/80 A Output
Output Specifications
Parameter
Output Voltage Set Point
Vo≥1 V
Vo＜1 V
Load Regulation
Vo≥2.5 V
Vo＜2.5 V
Line Regulation
Vo≥2.5 V
Vo＜2.5 V
Regulation Over Temperature
(0
°C
to +70
°C)
Output Current
Current Limit Threshold
Output Ripple and Noise (pk-pk)
Vo=5.0 V
Vo=3.3 V
Vo=2.5 V
Vo=1.5 V
Vo=1.0 V
Vo=0.84 V
Output Ripple and Noise (rms)
Vo=5.0 V
Vo=3.3 V
Vo=2.5 V
Vo=1.5 V
Vo=1.0 V
Vo=0.84 V
Turn On Time
Rise Time
Overshoot at Turn on and off
Output Capacitance
ESR≥1 mΩ
Transient Response
50% ~ 100% Max Load
Settling Time
100% ~ 50% Max Load
Settling Time
Vo=All
-
-
-
-
-
-
-
-
300 mV
180 uS
300 mV
180 uS
Test conditions:
di/dt = 2.5 A/uS; Vin =12 V;
Ta=25°C, Co=4700 uF.
-
-
-
0A
90 A
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
0 uF
-
-
-
-
110 A
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
0.6% Vo
9 mV
0.02% Vo/C
80 A
150 A
80 mV
80 mV
60 mV
60 mV
50 mV
50 mV
40 mV
40 mV
30 mV
30 mV
25 mV
25 mV
15 mS
5 mS
0.5%
4700 uF
-
-
-
-
0.6% Vo
12 mV
-1.5 % Vo
-10 mV
-
-
+1.5 % Vo
+10 mV
Vin=Vinmin, Io=Iomax
Min
Typ
Max
Notes
Test conditions:
0-20 MHz BW, with a 1 µF
ceramic capacitor and a 10 uF
Tantalum cap at output.
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
NON-ISOLATED DC/DC CONVERTERS
10.8 Vdc - 13.2 Vdc Input
0.84 Vdc - 5.0 Vdc/80 A Output
General Specifications
Parameter
Efficiency
Vo=5.0 V
Vo=3.3 V
Vo=2.5 V
Vo=1.8 V
Vo=1.5 V
Vo=1.2 V
Vo=1.0 V
Vo=0.84 V
Switching Frequency
Output Voltage Trim Range
Over Voltage Protection
Over Temperature Protection
MTBF
Dimensions
Inches (L
×
W
×
H)
Millimeters (L
×
W
×
H)
Weight
-
2.58 x 1.25 x 0.608
65.53 x31.75 x 15.44
44 g
-
91%
89%
88%
86%
85%
81%
79%
76%
-
0.84 V
110% Vo,set
-
95%
93%
92%
90%
89%
86%
83%
80%
330 kHz
-
115%Vo,set
105
°C
2,198,818 hours
-
-
-
-
-
-
-
-
-
5V
130%Vo,set
-
Trim pin is open, Vo = 0.835 V.
Vin=12 V, Io=full load.
The temperature of heatsink.
Calculated Per Bell Core SR-
332 (I
O
= 80%Iomax; Vin=12 V;
T
a
= 25
°C)
Min
Typ
Max
Notes
Measured at Vin=12 V, full load.
Note:
All specifications are typical at 25
°C
unless otherwise stated.
Control Specifications
Parameter
Remote On/Off (Active High)
Signal Low (Unit Off)
Signal High (Unit On)
Current Source/Sink
PwGood (PowerGood)
PwGood = High = Power
Good
PwGood = Low = Power
Not Good
2.4 V
-
0V
-
-
-
-
-
5.25 V
2 mA
0.4 V
4 mA
-0.3 V
2.8 V
0 mA
-
-
-
0.8 V
Vin,max
3.3 mA
Remote On/Off pin is open, unit is on.
Min
Typ
Max
Notes
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
10.8 Vdc - 13.2 Vdc Input
0.84 Vdc - 5.0 Vdc/80 A Output
Output Trim Equation
The Trim resistor should be connected between the Trim+ pin and Trim- pin.
R
trim
1. 675
=
(
K
Ω
)
Vo
−
0. 835
Vout
Module
Trim+
Rtrim
Trim–
20
100
10
Rtrim( Vo)
1
0.1 0.1
1
0.84
1.5
2
2.5
3
Vo
3.5
4
4.5
5
5
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
10.8 Vdc - 13.2 Vdc Input
0.84 Vdc - 5.0 Vdc/80 A Output
Efficiency Data
Efficiency Curve
95.0%
Efficiency
90.0%
85.0%
80.0%
75.0%
70.0%
65.0%
60.0%
55.0%
8
20
40
Output Current(A)
60
80
95.0%
90.0%
Efficiency
Efficiency Curve
10.8 V
12 V
13.2 V
85.0%
80.0%
75.0%
70.0%
8
20
40
Output Current(A)
60
80
10.8 V
12 V
13.2 V
Vo=0.84 V
Efficiency Curve
95.0%
93.0%
91.0%
89.0%
87.0%
85.0%
83.0%
81.0%
79.0%
77.0%
75.0%
8
20
40
Output Current(A)
60
80
98.0%
96.0%
94.0%
92.0%
90.0%
88.0%
86.0%
84.0%
82.0%
80.0%
8
20
Vo=1.2 V
Efficiency Curve
Efficiency
Efficiency
10.8 V
12 V
13.2 V
10.8 V
12 V
13.2 V
40
Output Current(A)
60
80
Vo=1.8 V
Efficiency Curve
Vo=2.5 V
Efficiency Curve
Efficiency
Efficiency
98.0%
96.0%
94.0%
92.0%
90.0%
88.0%
86.0%
84.0%
82.0%
80.0%
8
20
40
Output Current(A)
60
80
10.8 V
12 V
13.2 V
98.0%
96.0%
94.0%
92.0%
90.0%
88.0%
86.0%
84.0%
82.0%
80.0%
8
20
40
Output Current(A)
60
80
10.8 V
12 V
13.2 V
Vo=3.3 V
Vo=5.0 V
Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302
•
Tel 201-432-0463
•
Fax 201-432-9542
•
www.belfuse.com
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