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标题: 紧急求助:如何减小开关电源的输出纹波? [打印本页]

作者: flyoung    时间: 2004-5-21 10:18     标题: 紧急求助:如何减小开关电源的输出纹波?

请教各位高手和斑竹,我现在在设计一个输入电压12V,输出28V,输出电流2A的开关电源,用的是国半的LM3478,现在输出纹波太大,拜求各位高手,如何才能减小电源的输出纹波呢?[em24][em24]


[此贴子已经被作者于2004-5-21 9:25:05编辑过]


作者: xiaoping.chu    时间: 2004-5-21 10:18

- How about your input smoothing cap? enough? pls calculate.
- What about your storing energy inductance ? high value will be better .
- What about your output smoothing cap ? low ESR?
- What about compensation for your circuit? wave is stable?
- How to measure ripple?




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