摘要
提出一种基于UC28600的脉冲宽度调制(PWM)控制器的开关电源设计方案。UC28600是TI公司的一款高性能的准谐振PWM控制器。该方案选用UC28600采用多模式控制以提高全负载条件下的开关转换效率,并达到减少电磁干扰,降低待机损耗的目的。
A design of switch power based on PWM controller of UC28600 is given. The UC28600 is a PWM controller with advanced energy features. Feedback input voltage controls the mode of operation in one of the three modes： quasi resonant （QR）, frequency foldback mode （FFM） and green mode （GM）. By adopting multi-mode operation, its conversion efficiency is enhanced over the entire load range. It reduces the EMI and operation frequency at light load and no load ooerations.
出处
《信息化研究》
2012年第4期50-52,共3页
INFORMATIZATION RESEARCH
