GENERAL DESCRIPTION

The ADP3418 is a dual, high voltage MOSFET driver optimized for driving two N-channel MOSFETs, the two switches in a nonisolated, synchronous, buck power converter. Each of the drivers is capable of driving a 3000 pF load with a 30 ns transition time. One of the drivers can be bootstrapped, and is designed to handle the high voltage slew rate associated with floating high side gate drivers. The ADP3418 includes overlapping drive protection to prevent shoot-through current in the external MOSFETs. The OD pin shuts off both the high-side and the low-side MOSFETs to prevent rapid output capacitor discharge during system shutdowns.

FEATURES

All-in-one synchronous buck driver

Bootstrapped high-side drive

1 PWM signal generates both drives

Anticross-conduction protection circuitry

Output disable control turns off both MOSFETs to float the output per Intel® VRM 10 and AMD Opteron specifications

APPLICATIONS

Multiphase desktop CPU supplies

Single-supply synchronous buck converters