BEL V7PC

NON-ISOLATED DC/DC CONVERTERS
12V Input
Vref/2 / 10A Output
V7PC-10AT5x
•
Non-Isolated
•
Remote On/Off
•
High Efficiency
•
Under-voltage Lockout (UVLO)
•
High Power Density
•
OCP/SCP
•
Low Cost
•
Remote Sense
Description
The V7PC-10AT5x 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. Replace
“x” in the part number with “S” or “A” depending on your specific application and specific external capacitor bank.
Part Selection
Output
Voltage
Vref/2
Vref/2
Input
Voltage
12V
12V
Max. Output
Current
10A
10A
Max. Output
Power
25W
25W
Typical
Efficiency
82%
82%
Model Number
V7PC-10AT5S
V7PC-10AT5A
Note: Add “G” suffix at the end of the model number to indicate “Tray Packaging”. See page 5 for model
number differences.
Absolute Maximum Ratings
Parameter
Input Voltage (continuous)
Output Enable Terminal Voltage
Ambient Temperature
Storage Temperature
Min
-0.3V
-0.3V
0°C
-40°C
Typ
-
Max
15V
15V
70°C
100°C
Notes
Input Specifications
Parameter
Input Voltage
Input Current (full load)
Input Reference Voltage
Input Current (no load)
Remote Off Input Current
Min
10.8V
-
Typ
3
Max
13.2V
2.1A
<3.5V
50mA
15mA
Input Reflected Ripple Current (pk-pk)
-
-
180mA
Input Reflected Ripple Current (RMS)
-
-
2
I t Inrush Current Transient
Turn-on Voltage Threshold
Turn-off Voltage Threshold
8.0V
50mA
2
0.08A s
9.7V
8.8V
Notes
Tested with a 470uF/16V input
capacitor with ESR=0.03 ohm max at
100KHz & simulated source impedance
of 500nH, 5Hz to 20MHz.
2
0.16A s
10V
Note: All specifications are tested at Vref =2.5V.
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
0.985 (Vref/2) V
Vref/2 V
1.015(Vref/2) V
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
-
Output Voltage Set Point
Short Circuit Surge Transient
22A
-
2
0.35A s
0.7A s
Output Ripple and Noise (pk-pk)
-
45mV
100mV
Output Ripple and Noise (RMS)
-
11mV
25mV
Turn on Time
-
50mS
80mS
Overshoot at Turn on
-
0%
3%
470uF
-
5600uF
Output Capacitance
Notes
Test conditions:
Vin=12V, Iout= full load
2
Test conditions:
0-20MHz BW, 0.1uF
ceramic capacitor at the
output
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
Efficiency (Vin=12V, Io=Io-max )
Switching Frequency
Min
80%
Typ
82%
Max
-
180KHz
200KHz
220KHz
MTBF
Notes
Calculated Per Bell Core TR-332 (IO =
80% load; Vin=12V; Ta = 25°C)
3,403,119 hours
Dimensions
Inches (L × W × H)
Millimeters (L × W × H)
Remote sense compensation
-
Weight
-
2.5 x 0.55 x 0.37
63.5 x 13.97 x 9.4
0.5V
9.5g
-
Note: All specifications are typical at 25°C unless otherwise stated.
Control Specifications
Parameter
Min
Typ
Max
Signal Low (Unit Off)
-0.3V
-
0.3V
Signal High (Unit On)
2.8V
-
13.2V
Notes
Remote On/Off
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) V7PC-10AT5S and
V7PC-10AT5A.
-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
90.0%
EFFICIENCY
85.0%
10.8V
12.0V
80.0%
75.0%
13.2V
70.0%
65.0%
60.0%
1.0
3.0
5.0
7.0
OUTPUT CURRENT
9.0
Thermal Derating Curve
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
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
Model Number Description
V7PC-10AT5S: Designed to accept its reference input from a G7NB-81A180. For use with other reference
inputs, consult factory. Compensated for 1 X 560uF Oscon external capacitor.
V7PC-10AT5A: Designed to accept its reference input from a V7XE-20AS20. For use with other reference
inputs, consult factory. Compensated for 12 X 100uF ceramic in parallel with 2 X 820uF Oscon in parallel with
16 X 4.7uF ceramic.
.
©2005 Bel Fuse Inc. Specifications subject to change without notice. 031805
CORPORATE
FAR EAST
EUROPE
Bel Fuse Inc.
206 Van Vorst Street
Jersey City, NJ 07302
Tel 201-432-0463
Fax 201-432-9542
www.belfuse.com
Bel Fuse Ltd.
8F/ 8 Luk Hop Street
San Po Kong
Kowloon, Hong Kong
Tel 852-2328-5515
Fax 852-2352-3706
www.belfuse.com
Bel Fuse Europe Ltd.
Preston Technology Management Centre
Marsh Lane, Suite G7, Preston
Lancashire, PR1 8UD, U.K.
Tel 44-1772-556601
Fax 44-1772-888366
www.belfuse.com