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 / Programmable Output / 30A VRM 9.0 Compatible

•

High efficiency means less power dissipation

•

Remote on/off

•

2-Wire Remote sense

•

Optional 5 bit voltage programming schemes

o

Intel VRM 9.x compatible 1.1V to 1.85V

o

Motorola compatible 1.0V to 1.68V

•

Adaptive voltage positioning

Description

The V7NB-30A Series are non-isolated step down DC/DC converters providing up to 30A of output current and

designed to be compatible to the Intel VRM 9.0 / 9.1 VID codes. Standard features include remote on/off, over

current protection, remote sense and a power good signal. This product also makes use of adaptive positioning

to improve transient response performance. These products are specifically design to power a wide variety of

high performance microprocessors but may be used almost anywhere low-voltage silicon is being employed and

a nominal 12V source is available. Typical applications include file servers, work stations and other computing

applications.

Input Specifications

Parameter

Min

Typ

Max

Notes

Input Voltage Range

10.8 VDC

13.2 VDC

Input Current (disabled)

30mA

Input Current (full load)

6A

Reflected Ripple Current

100mA rms

With 100uF, 25mOhm

capacitor and 200nH of input

inductance.

Output Specifications

Parameter

Min

Typ

Max

Notes

Output Current

0A

30A

Set Point Accuracy

1.81V

1.83

1.85

no load, excluding Adaptive

positioning, VID 00000

Adaptive Positioning

(Droop Impedance)

3.33 mOhm

Ripple and Noise

20mV

pk-pk, 0 to 20MHz Bandwidth

Full load with two external

560uF oscon capacitors on

output.

Turn on Time

8mS

16mS

Transient Response

Deviation

Settling Time

90mV

175uS

di/dt = 5A/uS

Load step =50% of max load.

Cout = two 820uF OSCON

Remote Sense Compensation

±0.3VDC

Output Capacitance

1200uF

20,000uF

For applications requiring

higher or lower output

capacitance please consult

factory.

V7NB-30A180 PRELIMINARY