Other Parts Discussed in Thread: TMCS1100, UCC28070
PFC电路用了UCC28070芯片进行控制,但是BOOST电路未受到28070芯片的控制响应。去掉控制芯片,BOOST电路输出有增幅。查看了PDF,CSA/CSB通过TMCS1100电流传感器输出的电压值,与PDF中的电路图不一致,想咨询的是,这样出来的CSA/CSB能实现PFC对mos管的驱动吗?
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Hi
不太明确你的意思,但是CSA,CSB信号异常是会造成UCC28070工作异常,具体设计案例可以参考: www.ti.com.cn/.../slua479b.pdf