G7NB-81A180 Datasheet, PDF (1/2 Pages) Bel Fuse Inc. – NON-ISOLATED DC/DC CONVERTERS 12V Input / Programmable Output / 81A VRM 9.1 Compatible

NON-ISOLATED DC/DC CONVERTERS
12V Input / Programmable Output / 81A VRM 9.1 Compatible
G7NB-81A180 PRELIMINARY
• High efficiency means less power dissipation
• Remote on/off
• 2-Wire Remote sense
• 5 bit VID digital voltage programming.
• Single wire current sharing
Description
The G7NB-81A Series is a non-isolated step down DC/DC
converters providing up to 81A of output current and designed
to be compatible to the Intel VRM 9.1 specification. Standard features include current share, 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 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
Input Voltage Range
Input Current (disabled)
Input Current (full load)
Reflected Ripple Current
Min
10.8 VDC
Typ
17mA
Max
13.2 VDC
16A
500mA rms
Notes
With 100uF, 25mOhm
capacitor and 200nH of input
inductance.
Output Specifications
Parameter
Output Current
Set Point Accuracy
Adaptive Positioning
(Droop Impedance)
Ripple and Noise
Min
0A
1.81V
Turn on Time
Transient Response
Deviation
Settling Time
Remote Sense Compensation
Output Capacitance
4400uF
Typ
1.83
800 uOhm
20mV
8mS
100mV
175uS
±0.3VDC
Max
81A
1.85
Notes
no load, excluding Adaptive
positioning, VID 00000
16mS
pk-pk, 0 to 20MHz Bandwidth
Full load with two external
560uF oscon capacitors on
output.
di/dt = 5A/uS
30A Load step
9000uF
For applications requiring
higher or lower output
capacitance please consult
factory.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel [phone] • Fax [phone] • www.belfuse.com