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UCC14240-Q1: tida-01606项目中驱动板上的UCC14240DWNQ1问题

Part Number: UCC14240-Q1
Other Parts Discussed in Thread: TIDA-01606

    您好,请问一下,根据tida-01606项目参考的电路设计,1,第一次整版测试,UCC14240DWNQ1的管脚冒烟了,随后,重新焊接一块,只焊接了UCC14240DWNQ1左边的电阻电容和电源芯片,左边5,6,7,8也冒烟了,并且管脚烧穿了,电压源给定电压21v,电流一直在0.3-0.5A的之间跳变,并且芯片发热严重,过一会就烧了,想请教一下