Soft Start-up Schemes for Isolated Boost Full-Bridge Converter Based on DSP

摘要

A novel soft start-up scheme of isolated boost full-bridge (IBFB) converter based on DSP is proposed. The conventional start-up schemes of IBFB are investigated. The pulse-width modulated (PWM) control timing for normal boost mode operation is analyzed. The proposed start-up scheme is experimentally verified on a 5KW, 24V/300V prototype.