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UCC21520: 电源管理论坛

Part Number: UCC21520

你好,

   目前在调试TI UCC21520发现有些不良,负载为英飞凌 MOS IPW60R037CSFD。问题表现如下:

       1)发现UCC21520 引脚 15OUTA)和引脚16VDDA)短路,实际芯片测试的确短路;

       2)发现UCC21520 引脚15 OUTA)和引脚10OUTB)上电后在 INA INB 无驱动信号条件下,高电平输出。

   请帮忙分析一下问题原因,谢谢!

   电路图如下: