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.

特性 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