NON-ISOLATED DC/DC CONVERTERS
8.3 Vdc - 14 Vdc Input
0.75 Vdc - 5.5 Vdc/16 A Output
VRBC-16A1Ax
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Non-Isolated
High Efficiency
High Power Density
RoHS Compliant
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Rev.A
Under-voltage Lockout (UVLO)
Over Temperature Shutdown
OCP/SCP
Wide Input
Wide Trim
Remote On/Off
Active Low/High (option)
Remote Sense
Excellent Thermal Performance
Low Cost
Fixed Frequency
Able to Sink & Source Current
Vout Prebias
Industrial Temperature Range
Description
The Bel VRBC-16A1Ax is part of the non-isolated dc/dc converter Power Module series. The modules use a SIP
package. These converters are available in a range of output voltages from 0.75 Vdc to 5.0 Vdc over a wide
range of input voltage (Vin = 8.3 Vdc - 14 Vdc).The efficiency is typically 92% at 3.3 Vout at full load.
Part Selection
Output
Voltage
0.75 V - 5.5 V
Input
Voltage
8.3 V - 14 V
Max. Output
Current
16 A
Max. Output
Power
80 W
Typical
Efficiency
94%
Model Number
Active Low
VRBC-16A1AL
Model Number
Active High
VRBC-16A1A0
Notes:
1.Change the last character to “C” to indicate 0.20’’ pin length and active low.
2. 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
Input Voltage (continuous)
Output Enable Terminal Voltage
Ambient Temperature
Storage Temperature
Min
-0.3 V
-0.3 V
-40
°C
-55
°C
Typ
-
-
-
-
Max
15 V
15 V
85
°C
125
°C
Notes
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
8.3 Vdc - 14 Vdc Input
0.75 Vdc - 5.5 Vdc/16 A Output
Input Specifications
Parameter
Input Voltage
Vo, set≤3.63 V
Vo, set
>
3.63 V
Input Current (full load)
Input Current (no load)
Remote Off Input Current
Input Reflected Ripple Current (rms)
Input Reflected Ripple Current (pk-pk)
I t Inrush Current Transient
Turn-on Voltage Threshold
Turn-off Voltage Threshold
2
1
Min
8.3 V
8.3 V
-
-
-
-
-
-
-
-
Typ
12 V
12 V
-
100 mA
2 mA
-
-
0.2 A s
7.8 V
7.3 V
2
Max
14 V
13.2 V
11 A
-
-
150 mA
400 mA
0.4 A s
-
-
2
Notes
With simulated source impedance of
1000 nH, 5 Hz to 20 MHz, use a 1000
uF/25 V AL-Cap with ESR=0.03 ohm
max and 6 x 47 uF/16 V tantalum cap
with ESR=0.013 ohm max, at 100 kHz
Notes:
1.This power module is not internally fused. An input line fuse must always be used.
All specifications are typical at 25
°C
unless otherwise stated.
Output Specifications
Parameter
Output Voltage Set Point
Load Regulation
Line Regulation
Regulation Over Temperature
(-40°C to +85°C)
Output Current
Current Limit Threshold
Short Circuit Surge Transient
Ripple and Noise (pk-pk)
Ripple and Noise (rms)
Turn on Time
Overshoot at Turn on
Output Capacitance
Transient Response
50% ~ 100% Max Load
Settling Time
100% ~ 50% Max Load
Settling Time
All
-
-
-
-
100 mV
80 uS
100 mV
80 uS
-
-
-
-
di/dt=2.5 A/uS; Vin=12 V; and
with 330 uF tantalum
capacitors at the output
Min
-2% Vo,set
-
-
-
0A
-
-
-
-
-
-
0 uF
Typ
-
0.2% Vo,set
0.3% Vo,set
0.3% Vo,set
-
180% Io,out
1A s
50 mV
30 mV
8 mS
-
-
2
Max
2% Vo,set
-
-
-
16 A
-
3A s
100 mV
45 mV
20 mS
1% Vo,set
5000 uF
2
Notes
Vin=12 V, full load
Io=Io, min to Io, max
Vin=Vin, min to Vin, max
Tref=Ta, min to Ta, max
Tested with 0-20 MHz, 10 uF
tantalum capacitor &1 uF
ceramic capacitor at the output
ESR≥10 mohm
Note:
All specifications are typical at nominal input, full load 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
8.3 Vdc - 14 Vdc Input
0.75 Vdc - 5.5 Vdc/16 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=0.75 V
Switching Frequency
Over Temperature Shutdown
1
Min
-
-
-
-
-
-
-
250 kHz
-
0.7525 V
-
Typ
94%
92%
90%
88%
87%
85%
78%
280 kHz
130
°C
-
-
4,619,490 hours
Max
-
-
-
-
-
-
-
310 kHz
-
5.5 V
0.5 V
Notes
Measured at Vin=12 V, full load
Output Trim Range (Wide Trim)
Remote Sense Compensation
MTBF
Dimensions
Inches (L
×
W
×
H)
Millimeters (L
×
W
×
H)
Weight
Calculated Per Bell Core SR-332 (I
O
= 80%
load; Vin=12 V; Vo=3.3 V; T
a
= 25
°C)
-
2.0x 0.5 x 0.32
50.8 x 12.7 x 8.13
7.1 g
-
Notes:
All specifications are typical at 25
°C
unless otherwise stated.
1. The Tref temperature measurement location:
Control Specifications
Parameter
Remote On/Off
Signal Low (Unit Off)
Signal High (Unit On)
Signal Low (Unit On)
Signal High (Unit Off)
Min
-0.2 V
-
-0.2 V
2.5 V
Typ
-
-
-
-
Max
0.3 V
Vin, max
0.3 V
Vin, max
Notes
VRBC-16A1A0; Remote On/Off pin open, Unit
on.
VRBC-16A1AL; Remote On/Off pin open, Unit
on.
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
8.3 Vdc - 14 Vdc Input
0.75 Vdc - 5.5 Vdc/16 A Output
Remote On/Off
For Active High Modules (Positive Logic)
When the transistor Q1 is in the Off state,
the power module is ON.
When the transistor Q1 is turned On,
the power module is OFF.
Vin
Vin
Module
Remote On/Off
Q1
GND
GND
For Active Low Modules (Negative Logic)
When the transistor Q1 is in the Off state,
the power module is OFF.
When the transistor Q1 is turned On,
the power module is ON.
GND
Vin
R
Vin
Module
Remote On/Off
Q1
GND
Output Trim Equations
Equation for calculating the trim resistor given the desired output voltage (Vo) is shown below. Rtrim is the
required resistance between the trim pin and GND pin, Vtrim is the required voltage between the trim and GND
pin.
10500
⎡
⎤
R
trim
= ⎢
−
1000
⎥
⎣
Vo
−
0 . 7525
⎦
Vo (V)
0.7525
1.2
1.5
1.8
2.5
3.3
5.0
Rtrim (KΩ)
Open
22.46
13.05
9.024
5.009
3.122
1.472
Vout
Sense
Module
trim
Rtrim
GND
Vtrim
=
{
0.7
−
0.0667
×
(
Vo
−
0.7525
)}
Vo (V)
0.7525
1.2
1.5
1.8
2.5
3.3
5.0
Vtrim (V)
Open
0.67
0.65
0.63
0.583
0.53
0.42
Vout
Sense
Module
trim
Vtrim
GND
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
8.3 Vdc - 14 Vdc Input
0.75 Vdc - 5.5 Vdc/16 A Output
Efficiency Data
Module 5.0V
0.98
0.96
0.94
0.92
0.9
0.88
0.86
0.84
2.0
Module 3.3V
0.96
Efficiency
8.3V
12.0V
13.2V
0.94
0.92
0.9
0.88
0.86
0.84
2.0
8.3V
12.0V
14.0V
Efficiency
4.0
6.0
8.0
10.0
12.0
14.0
16.0
4.0
6.0
8.0
10.0
12.0
14.0
16.0
Output Current
Output Current
Module 2.5V
96.0%
94.0%
92.0%
90.0%
88.0%
86.0%
84.0%
2.0
4.0
6.0
8.0
10.0 12.0 14.0 16.0
Output current
0.94
0.92
0.9
0.88
0.86
0.84
0.82
0.8
2
4
6
Module 1.8V
Efficiency
8.3V
12.0V
14.0V
8.3V
12.0V
14.0V
8
10
12
14
16
Module 1.5V
0.94
0.92
0.9
0.88
0.86
0.84
0.82
0.8
0.78
2
4
6
8
10
12
14
16
Module 1.2V
0.92
0.9
0.88
0.86
0.84
0.82
0.8
0.78
0.76
2
4
6
8
10
12
14
16
8.3V
12.0V
14.0V
8.3V
12.0V
14.0V
Module 0.75V
0.9
0.85
0.8
0.75
0.7
0.65
0.6
0.55
0.5
2
4
6
8
10
12
14
16
8.3V
12.0V
14.0V
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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