A 10 MHz GaN Driver IC with Bang-Bang DeadTime Control for Synchronous Rectifier Buck Converter

This paper proposes a high-speed gate driver integrated circuit (IC) for gallium nitride (GaN) synchronous buck converter which includes an adaptive bang-bang deadtime modulator to eliminate the power loss caused by reverse conduction and prevent high side and low side shoot-through. Fabricated in a 0.25-μm Bipolar-CMOS-DMOS process, the proposed GaN driver integrated circuit (IC) enables buck converter to operate at 10MHz switching frequency and adjust minimal dead-time to as low as 0.4ns under heavy load condition.