GENERAL DESCRIPTION

The ADP3120A 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 driver is capable of driving a 3000 pF load with a 45 ns propagation delay and a 25 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 ADP3120A includes overlapping drive protection to prevent shoot-through current in the external MOSFETs.

FEATURES

  All-in-one synchronous buck driver

  Bootstrapped high-side drive

  One PWM signal generates both drives

  Anticross conduction protection circuitry

  OD for disabling the driver outputs

     Meets CPU VR requirement when used with

     Analog Devices Flex -Mode™ 1 controller

APPLICATIONS

  Multiphase desktop CPU supplies

  Single-supply synchronous buck converters