NON-ISOLATED DC/DC CONVERTERS
8 Vdc - 14 Vdc Input 0.8 Vdc - 3.63 Vdc / 30 A Outputs
May. 19, 2010
Bel Power Inc., a subsidiary of Bel Fuse Inc.
RoHS Compliant
•
•
•
•
•
VRBG-30A1A1
Features
•
•
•
•
•
•
Non-Isolated
Fixed Frequency
High Efficiency
Wide Trim
Low Cost
Remote Sense
Rev.B
Input Under Voltage Lockout
Over Temperature Shutdown
Short Circuit Protection
Remote On/Off
Industrial Temperature Range
Applications
•
•
•
Networking
Computers and peripherals
Telecommunications
Description
The Bel VRBG-30A1A1 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 0.8 Vdc to 3.63 Vdc over a wide
range of input voltage (Vin = 8 Vdc - 14 Vdc).The efficiency is typically 92.5% at 12 Vdc input and 3.3 Vdc output
at full load.
Part Selection
Output Voltage
0.8 Vdc - 3.63 Vdc
Input Voltage
8 Vdc - 14 Vdc
Max. Output
Current
30 A
Max. Output
Power
99 W
Typical
Efficiency
92.5%
Model Number
VRBG-30A1A1
Note:
Add “G” or “R” suffix at the end of the model number to indicate Tray or Tape and Reel packaging.
Part Number Explanation
V R BG – 30 A 1A 1
1 2
3
4
5
6
7
1---Vertical mount
2---RoHS 6, change “R” to “7” means RoHS 5
3---Series name
4---Series code (output current 30A)
5---Input range (8-14V)
6---Output voltage, wide trim
7---Suffix
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 Vdc - 14 Vdc Input 0.8 Vdc - 3.63 Vdc / 30 A Outputs
May. 19, 2010
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Parameter
Min
-0.3 V
-0.3 V
-40
°C
-55
°C
Typ
-
-
-
-
Max
15 V
15 V
85
°C
125
°C
Notes
Absolute Maximum Ratings
Input Voltage (continuous)
Output Enable Terminal Voltage
Ambient Temperature
Storage Temperature
Input Specifications
Parameter
Input Voltage
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
Min
8V
-
-
-
-
-
-
-
-
Typ
12 V
-
300 mA
20 mA
-
-
-
6.7 V
6.3 V
Max
14 V
15 A
-
-
10 mA
40 mA
1As
-
-
2
Notes
An input line fuse must always be
used.
With a 1000 uF AL-Cap at the
input.
Note:
All specifications are typical at nominal input, full load at 25
°C
unless otherwise stated.
Output Specifications
Parameter
Output Voltage Set Point
Line Regulation
Load Regulation
Temperature Regulation
(-40
°C
to +85
°C)
Ripple and Noise (rms)
Ripple and Noise (pk-pk)
Output Current
Short Circuit Surge Transient
Turn on Time
Overshoot at Turn On
Output Capacitance
Transient Response
50% ~ 75%
Max Load
75% ~ 50%
Max Load
Overshoot
Settling Time
Overshoot
Settling Time
Vo=3.3 V
-
-
-
-
65 mV
20 uS
65 mV
20 uS
150 mV
45 uS
150 mV
45 uS
di/dt=0.5 A/us, Vin=12 Vdc,
with a 20 µF ceramic
capacitor and a150 uF
tantalum capacitor at the
output.
Min
-1.5%Vo, set
-
-
-
-
-
0A
-
-
-
150 uF
Typ
-
-
-
-
4 mA
15 mV
-
1A s
2 mS
-
-
2
Max
1.5%Vo, set
0.5%Vo, set
1.5%Vo, set
1%Vo, set
20 mV
100 mV
30 A
3A s
10 mS
5%
10000 uF
2
Notes
V
in
=12 V, I
O
=half load
0-20 MHz BW, with a 20 µF
ceramic capacitor and a
150 uF tantalum capacitor at
the output.
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 Vdc - 14 Vdc Input 0.8 Vdc - 3.63 Vdc / 30 A Outputs
May. 19, 2010
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Min
Vo=0.8 V
Vo=1.8 V
Vo=2.5 V
Vo=3.3 V
-
-
-
-
-
0.8 V
-
-
Typ
80%
88.5%
91%
92.5%
600 kHz
-
130
°C
-
TBD
Max
-
-
-
-
-
3.63 V
-
0.5 V
Calculated Per Bell Core SR-332 (I
O
=
Nominal; T
a
= 25
°C)
Notes
Vin=12 V, full load
General Specifications
Parameter
Efficiency
Switching Frequency
Output Voltage Trim Range
Over Temperature Shutdown
Remote Sense Compensation
MTBF
Dimensions
Inches (L
×
W
×
H)
Millimeters (L
×
W
×
H)
Weight
2.0 x 0.50 x 0.309
50.80 x 12.70 x 7.85
-
TBD
-
Note:
All specifications are typical at 25
°C
unless otherwise stated.
Control Specifications
Parameter
Remote On/Off
Signal Low (Unit Off)
Signal High (Unit On)
-0.3 V
2.8 V
-
-
0.8 V
Vin, max
Remote on/off pin open, unit on
Min
Typ
Max
Notes
Output Trim Equations
Equations for calculating the trim resistor are shown below (Unit:
Ω).
The Trim resistor should be connected
between the Trim pin and Ground pin.
Vout
R
trim
⎡
9680
⎤
= ⎢
−
715
⎥
⎣
Vo
−
0 . 8
⎦
Sense
Module
trim
Rtrim
Vo is the desired output voltage
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 Vdc - 14 Vdc Input 0.8 Vdc - 3.63 Vdc / 30 A Outputs
May. 19, 2010
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Efficiency Data
Module 0.8 V
85.0%
80.0%
75.0%
70.0%
65.0%
60.0%
55.0%
50.0%
45.0%
40.0%
3A
7.5A
15A
22.5A
30A
8V
12V
14V
Module 1.8 V
95.0%
90.0%
85.0%
8V
80.0%
75.0%
70.0%
65.0%
60.0%
3A
7.5A
15A
22.5A
30A
12V
14V
Module 2.5 V
95.0%
90.0%
85.0%
80.0%
75.0%
70.0%
65.0%
60.0%
3A
7.5A
15A
22.5A
30A
8V
12V
14V
Module 3.3V
95.0%
90.0%
85.0%
80.0%
75.0%
70.0%
65.0%
60.0%
3A
7.5A
15A
22.5A
30A
8v
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
NON-ISOLATED DC/DC CONVERTERS
8 Vdc - 14 Vdc Input 0.8 Vdc - 3.63 Vdc / 30 A Outputs
May. 19, 2010
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Thermal Derating Curves
The maximum acceptable temperature measured at the thermal ref points is 110 deg, the thermal ref point is
shown in Figure. All the derating curves were tested with two electronic loads connected in parallel.
Vin=12 V, Vo=3.3 V
Vin=12 V,Vo=2.5 V
Vin=12 V, Vo=1.8 V
Vin=12 V, Vo=0.8 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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