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
4.5 V-14 V Input
0.75 V-3.63 V/16 A Output
Non-Isolated
Under-voltage
Lockout
(UVLO)
High
Efficiency
Over
Temperature
Protection
High
Power
Density
OCP/SCP
Excellent Thermal Performance
Wide
Input
Low
Cost
Wide
Trim
Flexible Output Voltage
Sequencing (option)
Remote
On/Off
Active
Low/High
(option)
Able to Sink & Source Current
Remote
Sense
Industrial
Temperature
Range
Description
The Bel V7BC-16E2Ax is part of the non-isolated dc/dc converter series. The modules use a SIP package.
These converters are available in a range of output voltages from 0.75 V to 3.63 V over a wide range of input
voltage (Vin = 4.5 V-14 V). The Bel V7BC-16E2Ax has a sequencing feature that enables designers to
implement various types of output voltage sequencing when powering. The efficiency is typically 93.5% at 3.3 V
output and 5 V input at full load.
Part Selection
Output Voltage
Input
Voltage
Max. Output
Current
Max. Output
Power
Typical
Efficiency
Model Number
Active Low
Model Number
Active High
0.75 V 3.63 V
4.5 V 14 V
16 A
58 W
93.5%
V7BC-16E2AL
V7BC-16E2A0
Note
: Add "G" suffix at the end of the model number to indicate Tray Packaging.
Absolute Maximum Ratings
Parameter
Min
Typ
Max
Notes
Input Voltage (continuous)
-0.3 V
-
15 V
Output Enable Terminal Voltage
-0.3 V
-
15 V
Sequencing Voltage
1
-0.3
V
-
Vin
Ambient Temperature
-40
C
-
85
C
Storage Temperature
-55
C
-
125
C
Notes
: All specifications are typical at 25
C
unless otherwise stated.
1. V7BC-16E2Ax series of modules include a sequencing feature that enables users to implement
various types of output voltage sequencing in their applications. This is accomplished via an additional
sequencing pin. When not using the sequencing feature, either, tie the SEQ pin to Vin or leave it
unconnected.
V7BC-16E2Ax Series
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
4.5 V-14 V Input
0.75 V-3.63 V/16 A Output
Input Specifications
Parameter
Min
Typ
Max
Notes
Input Voltage
Vo,set
< 3.0
Vo,set
3.0
4.5 V
Vo,set+1.5 V
-
-
14 V
14 V
Input Current (full load)
-
-
15 A
Input Current (no load)
-
100 mA
-
Remote Off Input Current
-
2 mA
-
Input Reflected Ripple Current (pk-pk)
-
-
400 mA
Input Reflected Ripple Current (rms)
-
-
150 mA
Tested with one 1000 uF/25 V AL
input capacitor with ESR=0.03 ohm
max and 6 47uF/16 V tan
capacitors with ESR=0.013 ohm max
at 100 kHz, & simulated source
impedance of 1000 nH, 5 Hz to 20
MHz.
I
2
t Inrush Current Transient
-
0.2 A
2
s 0.4
A
2
s
Turn-on Voltage Threshold
-
4.3 V
-
Turn-off Voltage Threshold
3.7 V
-
4.2 V
Output Specifications
Parameter
Min
Typ
Max
Notes
Output Voltage Set Point
-2% Vo,set
-
2% Vo,set
Vin=12 V, full load
Load Regulation
-
0.2% Vo,set
-
Io=Io, min to Io, max
Line Regulation
-
0.3% Vo,set
-
Vin=Vin, min to Vin, max
Regulation Over Temperature
(-40
C to +85C)
-
0.3% Vo,set
-
Tref=Ta, min to Ta, max
Output Current
0 A
-
16 A
Current Limit Threshold
- 180%
Io,out
-
Short Circuit Surge Transient
- 1
A
2
s 3
A
2
s
Ripple and Noise (pk-pk)
-
30 mV
80 mV
Ripple and Noise (rms)
-
12 mV
35 mV
Tested with 0-20 MHz, 10 uF
Tantalum capacitor &1 uF TDK
ceramic capacitor at the output
Turn on Time
-
8 mS
20 mS
Overshoot at Turn on
-
-
1% Vo,set
Output Capacitance
0 uF
-
5600 uF
Transient Response
50% ~ 100% Max Load
-
100 mV
-
Settling Time
-
80 uS
-
100% ~ 50% Max Load
-
100 mV
-
Settling Time
All
- 80
uS
-
di/dt=2.5 A/uS; Vin=12 V; and
Cext=0 uF.
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
4.5 V-14 V Input
0.75 V-3.63 V/16 A Output
General Specifications
Parameter
Min
Typ
Max
Notes
Efficiency
Vo=3.3 V
Vo=2.5 V
Vo=1.8 V
Vo=1.5 V
Vo=1.2 V
Vo=0.75 V
-
-
-
-
-
-
91.7%
90.4%
87.5%
86%
85%
79%
-
-
-
-
-
-
Measured at Vin=12 V, full load
Efficiency
Vo=3.3 V
Vo=2.5 V
Vo=1.8 V
Vo=1.5 V
Vo=1.2 V
Vo=0.75 V
-
-
-
-
-
-
93.5%
91.5%
88.4%
87%
86%
80%
-
-
-
-
-
-
Measured at Vin=5 V, full load
Switching Frequency
250 kHz
280 kHz
310 kHz
Over Temperature Shutdown
1
-
130
C
-
Output Trim Range (Wide Trim)
0.7525 V
-
3.63 V
Remote Sense Compensation
-
-
0.5 V
MTBF
4,619,490 hours
Calculated Per Bell Core TR-332 (I
O
= 80%
Io,max; Vin=12 V; Vo=3.3 V; T
a
= 25
C)
Dimensions
Inches (L W H)
Millimeters (L W H)
2.0x 0.5 x 0.32
50.8 x 12.7 x 8.13
Weight -
7.1
g
-
Notes
: All specifications are typical at 25
C
unless otherwise stated.
1. The Tref temperature measurement location:
Control Specifications
Parameter
Min
Typ
Max
Notes
Remote On/Off
Signal Low (Unit Off)
-0.2 V
-
0.3 V
Signal High (Unit On)
-
-
Vin, max
V7BC-16E2A0; Remote On/Off pin open, Unit
on.
Signal Low (Unit On)
-0.2 V
-
0.3 V
Signal High (Unit Off)
2.5 V
-
Vin, max
V7BC-16E2AL; Remote On/Off pin open, Unit
on.
Voltage Sequencing
Sequencing Delay Time
25 mS
-
-
Delay from Vin, min to application of voltage
on SEQ pin
Sequencing Slew Rate Capability
-
-
2 V/mS
Tracking Accuracy
Power-Up
Power-Down
-
-
100 mV
200 mV
200 mV
400 mV
Vin, min to Vin, max; Io, min to Io, max;
Vseq<Vo
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
4.5 V-14 V Input
0.75 V-3.63 V/16 A Output
Output Trim Equations
Equation for calculating the trim resistor (in ) given the desired output voltage (Vo) is shown below. The Trim
Up resistor should be connected between the Trim pin and Ground.
1000
7525
.
0
10500
-
-
=
Vo
R
trim
Equation for calculating the trim voltage (in V) given the desired output voltage (Vo) is shown below. The Trim
Up voltage should be connected between the Trim pin and Ground.
)
7525
.
0
(
0667
.
0
7
.
0
-
-
=
Vo
V
trim
Rtrim
Module
Vout
GND
Sense
trim
Vtrim
Module
Vout
GND
Sense
trim
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
4.5 V-14 V Input
0.75 V-3.63 V/16 A Output
Efficiency Data
MODULE 3.3 V
70%
75%
80%
85%
90%
95%
100%
1.6
4.0
8.0
12.0
16.0
OUTPUT CURRENT
EFFI
C
I
E
N
C
Y
5.0 V
12.0 V
MODULE 2.5 V
70%
80%
90%
100%
1.6
4.0
8.0
12.0
16.0
OUTPUT CURRENT
EF
FI
C
I
EN
C
Y
5.0 V
12.0 V
MODULE 1.8 V
70%
75%
80%
85%
90%
95%
100%
1.6
4.0
8.0
12.0
16.0
OUTPUT CURRENT
EF
FI
C
I
EN
C
Y
5.0 V
12.0 V
MODULE 1.5 V
65%
75%
85%
95%
105%
1.6
4.0
8.0
12.0
16.0
OUTPUT CURRENT
E
F
F
I
CI
E
N
CY
5.0 V
12.0 V
MODULE 1.2 V
50%
60%
70%
80%
90%
100%
1.6
4.0
8.0
12.0
16.0
OUTPUT CURRENT
EF
F
I
CI
E
N
C
Y
5.0 V
12.0 V
MODULE 0.75 V
50%
60%
70%
80%
90%
100%
1.6
4.0
8.0
12.0
16.0
OUTPUT CURRENT
E
F
F
I
CI
E
N
CY
5.0 V
12.0 V
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