FAN5033

更新时间： 2024-11-21 04:18:07

品牌	Logo	应用领域
飞兆/仙童 - FAIRCHILD		控制器
页数	文件大小	规格书
39页	874K
描述
8-Bit Programmable, 2- to 3-Phase, Synchronous Buck Controller

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FAN5033 数据手册

January 2007

FAN5033

8-Bit Programmable, 2- to 3-Phase, Synchronous Buck Controller

Description

Features

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. The switching frequency of

the design is programmable by a single resistor value.

The number of phases can be programmed to support

two- or three-phase applications.

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

The FAN5033 also includes programmable no-load

offset and droop functions to adjust the output voltage

as a function of the load current, as required by the Intel

specifications. The FAN5033 provides an accurate and

reliable short-circuit protection function with an

adjustable over-current set point.

Selectable VR10 extended (7-bit) and VR11 (8-bit)

VID tables

Programmable soft-start ramp

Programmable short-circuit protection and

latch-off delay

The FAN5033 is specified over the commercial

temperature range of 0°C to +85°C and is available in a

32-lead MLP package.

Applications

Desktop PC/Server processor power supplies for

existing and next-generation Intel processors

VRM modules

Ordering Information

Part Number Temperature Range Pb-Free Package Type Packing Method

Quantity

FAN5033MPX

0°C to 85°C

Yes

MLP-32

Tape and Reel

3,000 per Reel

Intel^®is a registered trademark of Intel Corporation.

FAN5033 Rev. 1.0.0

www.fairchildsemi.com

12 3 4 5 6 7...39

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