频率计算法设计RCC开关电源

RCC称为自激式反激变换器,是中小功率开关电源最常用的设计方式之一。但设计RCC开关电源时,因各参数的互相影响,使计算、调试复杂。而传统的预选频率,后进行AP校验法需多次计算,所设计的系统难于工作在最佳状态。在开关电源设计中变压器设计是重点,变压器设计最重要的参考量是工作频率。若能预先计算出电源工作频率,或至少确定影响频率的因素,将大大减少计算和调试的时间。首先推导出频率计算公式,确定频率主要与初、次级电感量和输入电压的关系,并进一步确定变压器参数,最终确定电源的其他参数。最后通过对电源硬件的简单调试,验证设计的合理性。

Design for RCC Switch Mode Power Supply Based on Frequency Account

RCC(ringing choke convertor) is one of the most popular ways to design low/medium SMPS(switch mode power supply).Due to the parameters are interactional in the design of RCC SMPS,the interaction makes calculation and debugging complex.The existing ways preelect the frequency,and then validate them repeatedly by AP.Several time calculation is needed.Moreover,the system is hard to work in the best state.The transformer design is the key link in SMPS,and the most important reference is frequency in transformer...