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