GRND-40A160 Datasheet, PDF (1/5 Pages) Bel Fuse Inc. – NON-ISOLATED DC/DC CONVERTERS

NON-ISOLATED DC/DC CONVERTERS
12V Input / Programmable Output / VRM11 Compatible
GRND-40A160 Rev. B
• High efficiency means less power dissipation
• Remote on/off
• Wide input range (10.8 – 13.2V)
• I2C/SMbus available – consult factory
• 2-Wire Remote sense
• 7 bit VID digital voltage programming.
Description
The GRND-40A Series is a non-isolated step down DC/DC converter providing up to 45A of output current and
designed to be compatible with the Intel VRM11 requirements. Standard features include remote on/off, over
current protection, remote sense, VR_Fan signal, VR_Hot signal 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.
Part Selection
Output
Voltage
0.82 – 1.60V
Input
Voltage
12V
Input Specifications
Parameter
Input Voltage Range
Input Current (disabled)
Input Current (full load)
Reflected Ripple Current
Output Current
(Thermal Design)
35A
Output Current
(Peak Current)
45A
Typical
Efficiency
85%
Min
10.8 VDC
Typ
17mA
Max
13.2 VDC
8.0A
400mA rms
Model Number
GRND-40A160
Notes
With 2 330uF, 25mOhm
capacitor and 200nH of input
inductance.
Output Specifications
Parameter
Output Current
Set Point Accuracy
Adaptive Positioning
(Droop Impedance)
Ripple and Noise
Turn on Time
Transient Response
Deviation
Settling Time
Remote Sense Compensation
Output Capacitance
Min
0A
1.27V
See note
Typ
1.28V
1.25 mOhm
20mV
15mS
TBD
TBD
1,400uF
Max
35A
45A
1.29V
30mS
±0.3VDC
See note
Notes
Thermal design
Peak current rating
no load, excluding Adaptive
positioning, VRM11 VID 0x32
pk-pk, 0 to 20MHz Bandwidth
Full load. Note 3
di/dt = 5A/uS
Load step =50% of max load.
Consult factory regarding
external capacitance outside
of this range
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel [phone] • Fax [phone] • www.belfuse.com