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tps65130空载时通电即烧毁

Other Parts Discussed in Thread: TPS65130

按文档中典型电路设计,多层PCB板,5V转正负12V;与文档应用不同的是不采用电池供电,因而去掉了外接PFET管,无需输入低压关断功能,另外软启动电阻R7为为100K,电容C3为0.1uf。

多次损坏后,在新板上单独安装TPS65130及辅助电路,空载。上电就损坏。后将R7换为100R,正12V空载正常,负载加到50mA就损坏。