GENERAL DESCRIPTION
The ADP3419 is a dual MOSFET driver optimized for driving two N-channel switching MOSFETs in nonisolated synchronous buck power converters used to power CPUs in portable computers. The driver impedances have been chosen to provide optimum performance in multiphase regulators at up to 25 A per phase. The high-side driver can be bootstrapped relative to the switch node of the buck converter and is designed to accommodate the high voltage slew rate associated with floating high-side gate drivers.

FEATURES
    All-in-one synchronous buck driver
    One PWM signal generates both drives
    Anticross-conduction protection circuitry
    Output disable function
    Crowbar control
    Synchronous override control
    Undervoltage lockout

APPLICATIONS
    Mobile computing CPU core power converters
    Multiphase desk-note CPU supplies
    Single-supply synchronous buck converters
    Nonsynchronous-to-synchronous drive conversion