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UCC28056: UCC28056隔离反激QR电路设计问题

Part Number: UCC28056
Other Parts Discussed in Thread: UCC28810

UCC28056隔离反激QR电路设计问题,参考规格书制作的电路图如附图,有以下问题需要请教:

输入:90-264VAC,PF>0.9,输出:24V/3A

1. 初级侧Vcc启动电路是否正确?待机功耗大约多少?

2. 初级侧ZCD/CS电路是否正确?

3. 初级侧VOSNS光耦反馈电路是否正确?

 UCC28056.pdf