一种无需辅助绕组的高精度原边反馈(PSR)恒流/恒压AC-DC变换器设计

A high accuracy ac-dc converter without auxiliary winding has been proposed in this article. The converter adopts primary-side regulation (PSR) topology, sampling output voltage and current from primary inductance, then adjusting switching frequency and primary peak current of the power converter to regulate output. By switching the main power transistor and the auxiliary switching transistor alte...