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TPS65130: 芯片上电后不带负载,正负输出、VREF均不正常

Part Number: TPS65130

芯片上电后不带负载进行测试,正负输出以及VREF均不正常,正输出只有3.42V,负输出居然是1.32V,VREF有4.6V,不知道哪里出了问题,原理图和PCB如图