Description

The FAN5029 is a multi-phase buck switching regulator controller optimized to convert a 12V input supply to the processor core voltage required by highperformance 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. It outputs a PWM to external MOSFET drivers that, in turn, drive the switching power MOSFETs.

Features

• Selectable 2-, 3-, 4-, or 5-phase operation at up to 1MHz per phase

• ±7.7mV worst-case differential sensing error

• Active current balancing between the output phases

• Power good and crowbar blanking supports on-the fly VID code changes

• Selectable VR10 extended (7-bit) and VR11 (8-bit) VID tables

• Programmable short-circuit protection and latch-off delay

• Programmable soft start ramp

Applications

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

• VRM modules products