FAN5031MPX Description

The  FAN5031MPX is a multi-phase buck switching regulator controller, that is optimized to convert a 12V input supply to the processor core voltage required by high-performance Intel processors. It has an internal 8-bit DAC that converts a digital voltage identification (VID)code, that is sent from the processor, to set the output voltage between 0.5V and 1.6V in 6.25 mV steps. It outputs a PWM signal to external MOSFET drivers that, in turn, drive the switching power MOSFETs. 

FAN5031MPX Features

Selectable 2, 3, or 4 phase operation at up to 1MHz per phase

+7.7mV worst-case differential sensing error over temperature

Active current balancing between the output phases

Power good and Crowbar blanking support on-the-fly VID code changes

0.5V to 1.6V output

Fully compliant with both Intel's VR10 and VR11 specifications

FAN5031MPX Applications

Desktop PC/Server processor power supplies for existing and next-generation Intel processors 

VRM modules

Communications equipment 

Wired networking 

Industrial 

Factory automation & control 

Enterprise systems 

Enterprise machine