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TIDA-01352: 测试问题

user6411056
Prodigy 30 points
Part Number: TIDA-01352
Other Parts Discussed in Thread: LM5030

您好，我正在使用贵公司的TIDA-01352的设计。测试时发现负高压部分没有输出，LM5030没有输出，且其VCC引脚处的电压只有3.8V，D6两端电压为3.8V。现在我怀疑是Q7的MOS管坏了，但这款器件不容易焊接。现在我想通过VIN引脚给LM5030供电，也就是焊上R45与C47，并且去除Q7，请问这样的方案可行吗？或者您有什么推荐的方案，谢谢。