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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
3.3 V Input 0.9 V-2.5 V/15 A Output
Non-Isolated
Over
Temperature
Protection
High
Efficiency
Under-voltage
Lockout
(UVLO)
High Power Density
OCP/SCP
Fixed Frequency (300 kHz)
Industrial
Temperature
Range
Low
Cost
Remote
Sense
Remote
On/Off
Active
Low/High
(option)
Industry Standard Footprint
Description
The Bel V7PB-15Cxxx is part of the low cost non-isolated dc/dc converter series. The modules use a SIP
package for ease of layout and space savings. The output is closely regulated and the efficiency is typically
93% at 2.5 V output at full load. Typical features include remote on/off, under-voltage lockout, over-current
protection and short circuit protection.
Part Selection
Output
Voltage
Input
Voltage
Max. Output
Current
Max. Output
Power
Typical
Efficiency
Model Number
Active Low
Model Number
Active High
2.5 V
3.3 V
15 A
37.5 W
93%
V7PB-15C25L
V7PB-15C25S
1.8 V
3.3 V
15 A
27.0 W
90% V7PB-15C18L
V7PB-15C18S
1.5 V
3.3 V
15 A
22.5 W
89% V7PB-15C15L
V7PB-15C15S
1.2 V
3.3 V
15 A
18.0 W
86% V7PB-15C12L
V7PB-15C12S
0.9 V
3.3 V
15 A
13.5 W
83%
V7PB-15C09L V7PB-15C09S
Note:
Add "0" suffix at the end of the model number to indicate "Tube Packaging", and "R" for "Reel Packaging",
and "G" for "Tray Packaging".
Absolute Maximum Ratings
Parameter
Min
Typ
Max
Notes
Input Voltage (continuous)
-0.3 V
-
4 V
Output Enable Terminal Voltage
-0.3 V
-
6 V
Ambient Temperature
-40
C
-
85
C
Storage Temperature
-55
C
-
125
C
Input Specifications
Parameter
Min
Typ
Max
Notes
Input Voltage
3 V
3.3 V
3.6 V
Input Current (full load)
Vo=2.5 V
Vo=1.8 V
Vo=1.5 V
Vo=1.2 V
Vo=0.9 V
-
-
-
-
-
-
-
-
-
-
15 A
11.5 A
9.5 A
8 A
6 A
Input Current (no load)
Vo=2.5 V
Vo=1.8 V
Vo=1.5 V
Vo=1.2 V
Vo=0.9 V
-
-
-
-
-
120 mA
140 mA
160 mA
170 mA
180 mA
200 mA
200 mA
200 mA
200 mA
200 mA
V7PB-15C 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
3.3 V Input 0.9 V-2.5 V/15 A Output
Input Specifications (continued)
Parameter
Min
Typ
Max
Notes
Remote Off Input Current
Vo=2.5 V
Vo=1.8 V
Vo=1.5 V
Vo=1.2 V
Vo=0.9 V
-
-
-
-
-
12 mA
12 mA
17 mA
15 mA
15 mA
20 mA
20 mA
20 mA
20 mA
20 mA
Input Reflected Ripple Current (pk-pk)
Vo=2.5 V
Vo=1.8 V
Vo=1.5 V
Vo=1.2 V
Vo=0.9 V
-
-
-
-
-
80 mA
110 mA
130 mA
100 mA
85 mA
120 mA
160 mA
180 mA
150 mA
135 mA
Input Reflected Ripple Current (rms)
Vo=2.5 V
Vo=1.8 V
Vo=1.5 V
Vo=1.2 V
Vo=0.9 V
-
-
-
-
-
25 mA
30 mA
40 mA
30 mA
25 mA
40 mA
50 mA
60 mA
50 mA
40 mA
Tested with simulated source
impedance of 500nH and two
270uF/16V (P/N: 16SP270M SANYO)
Oscon Capacitors at the input
I
2
t Inrush Current Transient
Vo=2.5 V
Vo=1.8 V
Vo=1.5 V
Vo=1.2 V
Vo=0.9 V
-
-
-
-
-
0.02 A
2
s
0.015 A
2
s
0.01 A
2
s
0.008 A
2
s
0.008 A
2
s
0.04 A
2
s
0.03 A
2
s
0.02 A
2
s
0.016 A
2
s
0.016 A
2
s
Turn-on Voltage Threshold
-
2.8 V
-
Turn-off Voltage Threshold
-
2.5 V
-
Output Specifications
Parameter
Min
Typ
Max
Notes
Output Voltage Set Point
V
O
=2.5 V
V
O
=1.8 V
V
O
=1.5 V
V
O
=1.2 V
V
O
=0.9 V
2.450 V
1.764 V
1.470 V
1.176 V
0.882 V
2.5 V
1.8 V
1.5 V
1.2 V
0.9 V
2.550 V
1.836 V
1.530 V
1.224 V
0.918 V
Test condition:
Vin=3.3 V, lout=full load
Load Regulation
V
O
=2.5 V
V
O
=1.8 V
V
O
=1.5 V
V
O
=1.2 V
V
O
=0.9 V
-
-
-
-
-
6 mV
5 mV
4 mV
3 mV
3 mV
12.5 mV
9.0 mV
7.5 mV
6.0 mV
6.0 mV
Line Regulation
V
O
=2.5 V
V
O
=1.8 V
V
O
=1.5 V
V
O
=1.2 V
V
O
=0.9 V
-
-
-
-
-
4 mV
3 mV
3 mV
2 mV
2 mV
7.5 mV
5.5 mV
4.5 mV
4.0 mV
4.0 mV
Regulation Over Temperature
(-40
C to +85 C)
V
O
=2.5 V
V
O
=1.8 V
V
O
=1.5 V
V
O
=1.2 V
V
O
=0.9 V
-
-
-
-
-
30 mV
20 mV
15 mV
15 mV
10 mV
50 mV
40 mV
30 mV
25 mV
20 mV
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
3.3 V Input 0.9 V-2.5 V/15 A Output
Output Specifications (continued)
Parameter
Min
Typ
Max
Notes
Output Current
0 A
-
15 A
Current Limit Threshold
18 A
-
35 A
Short Circuit Surge Transient
- 0.2
A
2
s 0.4
A
2
s
Turn on Time
-
6 mS
10 mS
Overshoot at Turn on
-
0%
3%
Output Capacitance
-
-
6800 uF
Output Ripple and Noise (pk-pk)
V
O
=2.5 V
V
O
=1.8 V
V
O
=1.5 V
V
O
=1.2 V
V
O
=0.9 V
-
-
-
-
-
20 mV
25 mV
30 mV
25 mV
20 mV
50 mV
50 mV
60 mV
50 mV
50 mV
Output Ripple and Noise (rms)
V
O
=2.5 V
V
O
=1.8 V
V
O
=1.5 V
V
O
=1.2 V
V
O
=0.9 V
-
-
-
-
-
5 mV
7 mV
8 mV
6 mV
5 mV
10 mV
10 mV
12 mV
10 mV
10 mV
Test conditions:
0-20 MHz BW; 0.1 uF ceramic
capacitor and 10 uF aluminum
capacitor at the output
Transient Response
50% ~ 100% Max Load
-
110 mV
150 mV
Settling Time
-
40 uS
80 uS
100% ~ 50% Max Load
-
110 mV
150 mV
Settling Time
V
O
=2.5 V
-
40 uS
80 uS
50% ~ 100% Max Load
-
100 mV
130 mV
Settling Time
-
40 uS
80 uS
100% ~ 50% Max Load
-
100 mV
130 mV
Settling Time
V
O
=1.8 V
-
40 uS
80 uS
50% ~ 100% Max Load
-
100 mV
130 mV
Settling Time
-
40 uS
80 uS
100% ~ 50% Max Load
-
100 mV
130 mV
Settling Time
V
O
=1.5 V
- 40
uS
80 uS
50% ~ 100% Max Load
-
90 mV
120 mV
Settling Time
-
40 uS
80 uS
100% ~ 50% Max Load
-
90 mV
120 mV
Settling Time
V
O
=1.2 V
-
40 uS
80 uS
50% ~ 100% Max Load
-
90 mV
120 mV
Settling Time
-
40 uS
80 uS
100% ~ 50% Max Load
-
90 mV
120 mV
Settling Time
V
O
=0.9 V
-
40 uS
80 uS
Test conditions:
di/dt = 0.5 A/uS; Vin = 3.3 V;
and with two 220 uF Tantalum
capacitor at the 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
3.3 V Input 0.9 V-2.5 V/15 A Output
General Specifications
Parameter
Min
Typ
Max
Notes
Efficiency
V
O
=2.5 V
V
O
=1.8 V
V
O
=1.5 V
V
O
=1.2 V
V
O
=0.9 V
91%
88%
87%
84%
80%
93%
90%
89%
86%
83%
-
-
-
-
-
Measured at Vin=3.3 V, full load.
Switching Frequency
250 kHz
300 kHz
340 kHz
Output Voltage Trim Range
Vo=2.5 V
Vo=0.9 V-1.8 V
90% V
O
90% V
O
-
-
105% V
O
110% V
O
Remote Sense Compensation
V
O
=2.5 V
V
O
=0.9 V-1.8 V
-
-
-
-
5% V
O
10% V
O
The total output adjust range will not be
higher than 105% Vo for 2.5 V module,
and 110% Vo for other modules.
MTBF
4,163,010 hours
Calculated Per Bell Core TR-332 (I
O
=
Nominal; T
a
= 25
C)
Dimensions
Inches (L W H)
Millimeters (L W H)
2.0 x 0.55 x 0.387
50.8 x 13.97 x 9.84
Weight -
9.2
g
-
Note
: All specifications are typical at 25
C
unless otherwise stated.
Control Specifications
Parameter
Min
Typ
Max
Notes
Remote On/Off
Signal Low (Unit Off)
-0.3 V
-
0.8 V
Signal High (Unit On)
2.5 V
-
5.5 V
V7PB-15CxxS
Signal Low (Unit On)
-0.3 V
-
0.8 V
Signal High (Unit Off)
2.5 V
-
5.5 V
V7PB-15CxxL
Output Trim Equations
Equations for calculating the trim resistor (in k) given the desired adjusted voltage (Vadj) and the nominal
output voltage of the converter (Vnom) are shown below. The Trim Down resistor should be connected between
the Trim pin and Vout. The Trim Up resistor should be connected between the Trim pin and Ground. Only one of
the resistors should be used for any given application.
B
V
V
V
A
R
adj
nom
adj
down
trim
-
-
-
=
)
8
.
0
(
_
D
V
V
C
R
nom
adj
up
trim
-
-
=
_
Vnom A B
C
D
2.5 V
2.370
4.990
1.896
4.990
1.8 V
2.370
4.990
1.896
4.990
1.5 V
2.370
4.990
1.896
4.990
1.2 V
2.490
2.370
1.992
2.370
0.9 V
1.050
0.010
0.840
0.010
Module
Vout
GND
Sense
trim
Rtrim_down
Rtrim_up
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
3.3 V Input 0.9 V-2.5 V/15 A Output
Efficiency Data
Model 2.5V
87.0%
89.0%
91.0%
93.0%
95.0%
97.0%
1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.0 13.0 14.0 15.0
Output Current
E
f
f
i
ci
en
cy
3.0V
3.3V
3.6V
Model 1.8V
81.0%
83.0%
85.0%
87.0%
89.0%
91.0%
93.0%
95.0%
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0 10.0 11.0 12.0 13.0 14.0 15.0
Output Current
E
f
f
i
cien
c
y
3.0V
3.3V
3.6V
Model 1.5V
74.0%
76.0%
78.0%
80.0%
82.0%
84.0%
86.0%
88.0%
90.0%
92.0%
1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.0 13.0 14.0 15.0
Output Current
E
f
f
i
ci
en
cy
3.0V
3.3V
3.6V
Model 1.2V
70.0%
72.0%
74.0%
76.0%
78.0%
80.0%
82.0%
84.0%
86.0%
88.0%
90.0%
92.0%
1.0 2.0
3.0 4.0
5.0 6.0
7.0 8.0 9.0 10.0 11.0 12.0 13.0 14.0 15.0
Output Current
E
fficie
n
c
y
3.0V
3.3V
3.6V
t
Model 0.9V
60.0%
62.0%
64.0%
66.0%
68.0%
70.0%
72.0%
74.0%
76.0%
78.0%
80.0%
82.0%
84.0%
86.0%
88.0%
90.0%
1.0
2.0 3.0
4.0 5.0
6.0 7.0
8.0
9.0 10.0 11.0 12.0 13.0 14.0 15.0
Output Current
E
ffi
c
i
e
n
c
y
3.0V
3.3V
3.6V
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