ti工程师:
在使用TLC2252AI做带通滤波器的电路中,遇到负压始终达不到设计目的,输入9v,使用TPS76901降压为5v,作为正电源,+5v用TPS60400反向为-5v,由于负压空载时正常,加上后只有-3.7~-4.3V,在空板时不断焊接TLC2252AI等器件,TLC2252AI的外围电阻电容都不焊接,只单独给TLC2252AI供电,为什么在测试正负电压的过程中,不断有TLC2252AI的正负电源短路坏掉。我的这种测试方式有问题。请指教
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