I have a question with the TPS54335A. My circuit design is 24 volts in and 12 volts out.
In the application I found the chip was very easy to damage.
Could you help me check if there is something wrong with the circuit?
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主要是芯片的VIN和PH两个脚与GND短接了。
12V 输出会驱动12V无刷直流电机工作,所以输出要不要接大电容?如100UF/50V电解电容。
哦,另外我想在输入端增加一个TVS二极管,防止涌浪对IC的冲激,有没有作用?
你可以注意看下PH节点的上下冲振铃,看看有没有超过芯片的承受值
另外注意下layout布局,参照手册上的layout