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FAN5033 Datasheet Synchronous Buck Controller

Manufacturer: Fairchild (now onsemi)

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General Description

The FAN5033 device is a multi-phase buck switching regulator controller 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, sent from the processor, to set the output voltage between 0.5V and 1.6V in 6.25mV steps.

It outputs PWM signals to external MOSFET drivers that drive the switching power MOSFETs.

Overview

FAN5033 — 8-Bit Programmable 2- to 3-Phase Synchronous Buck Controller January 2007 FAN5033 8-Bit Programmable, 2- to 3-Phase, Synchronous Buck.

Key Features

  • Selectable 2- or 3-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 supports on-the-fly VID code changes 0.5V to 1.6V output Fully compliant with the Intel® VR10 and VR11 specifications.

More Datasheets from Fairchild (now onsemi)

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