A new pulse resonant MOSFET gate driver with efficient energy recovery

Abstract

To reduce gate driving losses caused by high switching frequency operation, a new pulse resonant gate driver is presented in this paper. The rise/fall time is online controllable, which can be adjusted by the phase angle between driving switches and auxiliary switches (phase shift control), especially suitable for the applications with digital control. To operate more efficiently, an initialized resonant current is generated before turning on/off, which could effectively reduce RMS resonant current with the same rise/fall time. Theoretical and simulation results prove operation and driving loss saving efficiency of the proposed resonant gate drive circuit.