General Description

The FAN5109 is a high-frequency driver, specifically designed to drive N-Channel power MOSFETs in a synchronous-rectified buck converter. This driver, combined with a Fairchild Multi-Phase PWM controller and power MOSFETs, form a complete core voltage regulator solution for advanced microprocessors.

Features

■ Drives N-channel High-Side and Low-Side MOSFETs in a Synchronous Buck Configuration

■ Enhanced Upgrade to FAN5009

■ Direct Interface to FAN5019B/FAN5182 and other compatible PWM Controllers

■ 12V High-Side and 12V Low-Side Drive

■ Internal Adaptive “Shoot-Through” Protection

■ Fast Rise and Fall times

■ Switching Frequency above 500kHz

■ OD input for Output Disable – allows for synchronization with PWM Controller

■ SOIC-8 Package

Applications

■ Multi-phase VRM/VRD Regulators for Microprocessor Power

■ High Current/High Frequency DC/DC Converters

■ High Power Modular Supplies