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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

• Pb−Free Package is Available

APPLICATIONS

• Mobile Computing CPU Core Power Converters

• Multiphase Desk-Note CPU Supplies

• Single-Supply Synchronous Buck Converters

• Non-Synchronous-to-Synchronous Drive Conversion