This application note presents single-stage Power Factor Correction (PFC) and focuses on how to select and design the flyback transformer for 16.8W (24V/0.7A) solution for universal input for LED lighting applications using FL6961. The flyback converter using FL6961 operates in Critical Conduction Mode (CRM) and has functions such as CC/CV feedback circuit, soft-starting, and the cycle-by-cycle current limit for LED lighting applications.
本应用笔记介绍了单级功率因数校正(PFC),重点介绍了如何为FL6.81使用LED照明应用的通用输入选择和设计用于16.8W(24V / 0.7A)解决方案的反激变压器。 使用FL6961的反激转换器以临界传导模式(CRM)工作,并具有CC / CV反馈电路,软启动以及LED照明应用的逐周期电流限制等功能。
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