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
12V Input
Vref/2 / 10A Output
Non-Isolated
Remote
On/Off
High
Efficiency
Under-voltage
Lockout
(UVLO)
High
Power
Density
OCP/SCP
Low
Cost
Remote
Sense
Description
The V7PC-10AT5S is a non-isolated step down DC/DC converter that operates from a nominal 12V source.
This converter is designed specifically to provide bus termination voltages in applications such as DDR (double
data rate) memory where the bus termination voltage must closely track the I/O bus voltage. The converter
accepts a reference input and uses this to program its output voltage to 50% of the reference. The unit is
packaged in an industry-standard single-in-line footprint and provides a maximum 10A output. Standard
features include remote on/off, input under-voltage lockout, over current protection and remote sense.
Part Selection
Output
Voltage
Input
Voltage
Max. Output
Current
Max. Output
Power
Typical
Efficiency
Model Number
Vref/2 12V 10A 12.5W 82%
V7PC-10AT5S
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)
-0.3V
-
15V
Output Enable Terminal Voltage
-0.3V
-
15V
Ambient Temperature
0
C
-
70
C
Storage Temperature
-40
C
-
100
C
Input Specifications
Parameter
Min
Typ
Max
Notes
Input Voltage
10.8V
-
13.2V
Input Current (full load)
-
-
2.1A
Input Refernce Voltage
-
-
<3.5V
Input Current (no load)
-
-
50mA
Remote Off Input Current
-
3
15mA
Input Reflected Ripple Current (pk-pk)
-
-
180mA
Input Reflected Ripple Current (RMS)
-
-
50mA
Tested with a 470uF/16V input
capacitor with ESR=0.03 ohm max at
100KHz & simulated source impedance
of 500nH, 5Hz to 20MHz.
I
2
t Inrush Current Transient
-
0.08A
2
s
0.16A
2
s
Turn-on Voltage Threshold
-
9.7V
-
Turn-off Voltage Threshold
8.0V
8.8V
10V
Note: All specifications are tested at Vref=2.5V.
V7PC-10AT5S
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
12V Input
Vref/2 / 10A Output
Output Specifications
Parameter
Min
Typ
Max
Notes
Output Voltage Set Point
0.985 (Vref/2) V
Vref/2 V
1.015(Vref/2) V
Test conditions:
Vin=12V, Iout= full load
Load Regulation
-
3mV
10mV
Line Regulation
-
3mV
10mV
Regulation Over Temperature
(0
C to 70
C)
- 5mV
20mV
Output Current
0A - 10A
Current Limit Threshold
13A - 22A
Short Circuit Surge Transient
- 0.35A
2
s 0.7A
2
s
Output Ripple and Noise (pk-pk)
-
45mV
100mV
Output Ripple and Noise (RMS)
-
11mV
25mV
Test conditions:
0-20MHz BW, 0.1uF
ceramic capacitor at the
output
Turn on Time
-
50mS
80mS
Overshoot at Turn on
-
0%
3%
Output Capacitance
470uF
-
3300uF
Notes: 1. All specifications are typical at nominal input, full load at 25
C
unless otherwise stated.
2. All specifications are tested at Vref=2.5V.
3. The modules track the transient response of the reference input. See the figure in TR data on Page 3.
General Specifications
Parameter
Min
Typ
Max
Notes
Efficiency (Vin=12V, Io=Io-max )
80%
82%
-
Switching Frequency
180KHz
200KHz
220KHz
MTBF
3,403,119 hours
Calculated Per Bell Core TR-332 (I
O
=
80% load; Vin=12V; T
a
= 25
C)
Dimensions
Inches (L
W
H)
Millimeters (L
W
H)
2.5 x 0.55 x 0.37
63.5 x 13.97 x 9.4
Remote sense compensation
-
-
0.5V
Weight -
9.5g
-
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)
-0.3V
-
0.3V
Signal High (Unit On)
2.8V
-
13.2V
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
12V Input
Vref/2 / 10A Output
Transient Response: di/dt=0.5A/uS,External Load Capacitance Co=470uF (electrolytic)
-50% to 50% load
Transient at 12V input and
Ta=25
C
50% to -50% load
Transient at 12V input and
Ta=25
C
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
12V Input
Vref/2 / 10A Output
Efficiency Data
Module 1.25V
60.0%
65.0%
70.0%
75.0%
80.0%
85.0%
90.0%
1.0
3.0
5.0
7.0
9.0
OUTPUT CURRENT
E
FFI
C
I
E
N
C
Y
10.8V
12.0V
13.2V
Thermal Derating Curve
2005 Bel Fuse Inc. Specifications subject to change without notice. 011705
CORPORATE FAR
EAST
EUROPE
Bel Fuse Inc.
Bel Fuse Ltd.
Bel Fuse Europe Ltd.
206 Van Vorst Street
8F/ 8 Luk Hop Street
Preston Technology Management Centre
Jersey City, NJ 07302
San Po Kong
Marsh Lane, Suite G7, Preston
Tel 201-432-0463
Kowloon, Hong Kong
Lancashire, PR1 8UD, U.K.
Fax 201-432-9542
Tel 852-2328-5515
Tel 44-1772-556601
www.belfuse.com
Fax 852-2352-3706
Fax 44-1772-888366
www.belfuse.com
www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
12V Input
Vref/2 / 10A Output
Pin Connections
Pin
Function
1 Vo+
2 Vo+
3
Opt. Remote Sense (+)
4 Vo+
5 Ground
6 Ground
7 Vin+
8 Vin+
9 Not
used
10 Vref
11 Remote
On/Off
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