输入电压为4.2V,输出电压正常,如图电压值。但是总是有吱吱吱声音,当L5换6.8uh,声音变大。参考过webench设计。
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输入电压为4.2V,输出电压正常,如图电压值。但是总是有吱吱吱声音,当L5换6.8uh,声音变大。参考过webench设计。
建议此案用WEBENCH优化下你的电路参数
https://webench.ti.com/webench5//power/webench5.cgi?Vin1Min=4.2&Vin1Max=4.2&O1V=12.6&O1I=0.25&Vin2Min=4.2&Vin2Max=4.2&O2V=-12&O2I=0.10&base_pn=TPS65131&AppType=None&op_TA=30&application=pmu&lang_chosen=en_US&origin=ti_search&optfactor=3
其次尝试更换电感材质试一下
还有带载的时候会有声音么