请问UCC3895的PGND和GND这两个要要共地吗?
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参见datasheet第10页
“Power Ground (PGND)
To keep output switching noise from critical analog circuits, the UCC3895 has two different ground connections.
PGND is the ground connection for the high-current output stages. Both GND and PGND must be electrically
tied together. Also, since PGND carries high current, board traces must be low impedance.”
在Layout时注意要单点接地以减小功率地对模拟地的干扰