Design Support


This application report provides a guide for the use of the type-4 ePWM (Devices Covered: 2807x, 2837xD, 2837xS, 28004x) module to implement valley switching. It presents the implementation details of controlling a boost PFC with valley switching using TI’s C2000™ microcontrollers. A modified 2-phase interleaved power factor correction (ILPFC) kit is used to validate the software and system operation. Detailed waveforms and test results along with a description of the software are provided. This document provides a further extension of TI design TIDM-1022 valley switching boost PFC.