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TPS563209: 电压输出不对

Part Number: TPS563209

原理图:  pcb版图:VIN现在是接的12V ,输出的测量电压是9.6V ,不知道问题出到哪儿了

  • HI

        芯片应该是坏了,电路直接用webench确认即可。

        但是layout有些不好,特别是SW脚,功率回路,GND等,建议你参考datasheet,layout对电源很重要,如果不好很容易不稳定,noise很大。