SNUBBER CIRCUIT AND MOSFET PARALLELING CONSIDERATIONS FOR HIGH POWER BOOST-BASED POWER-FACTOR CORRECTORS

摘要

Use of appropriate snubber circuit and paralleling of power switches are very important issues for high power boost-based PFC's. This paper shows that practical approach to the snubbing problem is a simple turn-on snubber with di/dt control of the diode reverse-recovery transition. Implementation of such snubber in boost converters with paralleled MOSFET switches is then discussed.