做了个9-24V输入,输出:3.3V/0.6A, 5V/0.1A。原理图参数如图,效率最高只有64%,想提升到70%以上,高手看看哪里可以改进啊 ???
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做了个9-24V输入,输出:3.3V/0.6A, 5V/0.1A。原理图参数如图,效率最高只有64%,想提升到70%以上,高手看看哪里可以改进啊 ???
Hi
我觉得你这个电路效率不会太高,建议在MOS,肖特基的选择上,尽量选择功耗小一点的,也建议优化一下变压器的设计。
如果你希望效率尽量高一些,建议采用这个方案: http://www.ti.com/lit/an/slua838/slua838.pdf