USB供电5V转4.2V,给锂电池充电,需要推荐一款芯片? 4.2V升压12V,计划采用芯片LM2578A设计升压电路,电路图为lm2578a.pdf中18页电路图。如何用单片机控制12V电压的输出和停止呢?能否推荐4.2V升压12V的更好芯片, 充电芯片要简单实用,不用功率测量,电路板空间有限。
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USB供电5V转4.2V,给锂电池充电,需要推荐一款芯片? 4.2V升压12V,计划采用芯片LM2578A设计升压电路,电路图为lm2578a.pdf中18页电路图。如何用单片机控制12V电压的输出和停止呢?能否推荐4.2V升压12V的更好芯片, 充电芯片要简单实用,不用功率测量,电路板空间有限。