小弟我在设计这个DC-DC,无电压输入,用的是TPS40170这个料,请大侠帮忙,急急
请看设计图纸
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Hi
建议首先确认芯片是否动作:
测试8V/3.3V LDO输出,即VDD输出是3.3V, VBP输出是8V, 然后SYNC有CLK输出,代表芯片是好的。