This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

紧急求助TPS61040/TPS61041无法升压???



我严格按照datasheet电路设计了3.3V->12v电路(附图1)。焊接完调试无法实现升压(附图2)。

输入3.45v(示波器量测)

输出3.23v(示波器量测)

FB引脚电压2.84V(不正常,手册是基准电压1.233v)

尝试:换过芯片;接了负载5.1k;使能EN为高;

请教什么原因呢?