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请问现在有没有成型的APFC产品，可以实现70kHz高频交流源整流，功率等级3.3kW。
Jiangtaoz,
可参考功率为3KW的参考设计PMP4259，使用UCC28070，但其开关频率为35KHZ。
http://www.ti.com/tool/pmp4259
www.ti.com/.../ucc28070
