Description

The FAN5109B is a dual, high-frequency MOSFET driver, specifically designed to drive N-channel power MOSFETs in a synchronous-rectified buck converter. These drivers, combined with a Fairchild multi-phase pulse-width-modulated (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 FAN5109

■ Direct Interface to FAN5029/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 Synchronization with PWM Controller

■ SOIC-8 Package

■ TTL-Compatible Logic Inputs (New)

Applications

■ Multi-Phase VRM/VRD Regulators for Microprocessor Power

■ High-Current, High-Frequency DC/DC Converters

■ High-Power Modular Supplies

■ General-Purpose TTL Input MOSFET Drivers