Implementing Advanced Control Strategies for Phase Shifted Full-Bridge DC-DC Converters using Micro-Controllers

摘要

This paper presents voltage mode control (VMC) and peak current mode control (PCMC) implementationsrnfor a phase shifted full-bridge (PSFB) converter in a highly integrated micro-controller based system.rnAdaptive zero voltage switching (ZVS) and various synchronous rectification schemes are discussed.rnDetails for generating complex gate drive waveforms, required by such control schemes, andrnintelligent timing control, to optimize system performance under changing operating conditions, arernalso provided. Experimental results obtained using two PSFB systems (600W and 360W) are presented.rnA constant high system efficiency above 10% rated load, novel PCMC waveform generation,rnand simple system implementation are the highlights of this implementation.