90-265$V_{rms}$ 입력범위를 갖는 단일전력단 역률개선 컨버터

A Single-Stage Power Factor Correction Converter for 90-265$V_{rms}$ Line Applications

A single-stage power factor correction AC/DC converter with a simple link voltage suppressing circuit (LVSC) for the universal line application is proposed. Using this simple circuit a low link voltage can be realized without deadbands at line zero-crossings. The proposed converter is analyzed and a prototype converter with 5C, 12V output is implemented to verify the performance. The experimental results show that the link voltage stress and efficiency are about 447V and 81%, respectively.