General  Description

The  APW7098, two-phase PWM control  IC, provides  a precision voltage regulation  system for advanced graphic microprocessors  in  graphics  car d  applications.   The i ntegrati on of power MOSFET drivers into the controller IC and  reduces  the  number of  external  parts for  a  cost and  space saving  power  management  solution.

Features

•    Voltage-Mode Operation with Current Sharing

     - Adjustable Feedback Compensation

     - Fast Load Transient Response

•    Operate with 8V~13.2VCC Supply V oltage

•    Selectable External or Internal 0.6V Reference

      - ±1.5% Accuracy Over Temperature

•    Support Single- and Two-Phase Operations

•    5VCC and Buffered Reference Outputs

•    8~12V Gate Drivers with Internal Bootstrap

     Diode

•    Lossless Inductor DCR Current Sensing

•    Selectable Operation Frequency

     - 150k/300k/400kHz per Phase

•    Power-OK Indicator Output

     - Regulated 1.5V on REFOUT/POK

•    Adjustable Over-Current Protection (OCP)

•    Accurate Load Line (DROOP) Programming

•    Adjustable Soft-Start

•    Over-Voltage Protection (OVP)

•    Under-Voltage Protection (UVP)

•    Over-Temperature Protection (OTP)

•    QFN4x4 24-Lead Package (QFN4x4-24A)

•    Lead Free and Green Devices Available (RoHS Compliant)

Applications

• Graphics Card GPU Core Power Supply

• Motherboard Chipset or DDR SDRAM Core Power Supply

• On-board High Power PWM Converter with Out put Current up to 60A