TL494做的DC-DC电源,原来是不隔离的,如图1,输出有5V3.5A,不过纹波较大有0.3Vpp.后来把它改成隔离式的,如图2,接负载能力差,输出1A时电压降到4.6V,我认为是反馈回路没设计好,请各位老师指点一下.
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