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TPS54360: 输出+-15v有的芯片会烧掉

Part Number: TPS54360

您好,电源设计如上图,+15v后边还接了78M12,-15v后边接了79m12,只给模拟电路的放大器供电,除了一个放大器只供了+12v外,剩下的四个放大器都是+-12v供电,有少数机器会出现芯片烧掉的情况,测量vin,gnd,输出三个引脚全部短路,有的机器是+-15v短路,有的是-15v短路,更换54360后即可恢复,但怕长时间使用继续出问题。

AGND和DGND在模拟板上用0欧电阻连接。