1 Introduction

A 1kW PFC pre-regulator can be designed with a single-stage boost converter or more effectively, with parallel interleaved CCM. However, each of these topologies have weaknesses in supplying high power. Notably, parallel interleaved CCM solutions are more expensive than the TM counterpart due to the larger boost inductors, higher performance rectifier diodes and larger, more expensive FETs that are required. Parallel Interleaved TM can achieve similar electrical performance, including PF, THD, and audible noise immunity at a lower overall cost.