Other Parts Discussed in Thread: UCC28950, UCC3895,
采用上述方案搭建电路,上管关闭GS出现上尖峰,下管相应出现下尖峰。
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HI
你现在设置的频率是多少? 适当再设低一点点看看?
其次你是著有layout, 特别是功率回路和GND的layout.
后面建议你用UCC28950, 这个芯片相对UC3879的后续版本(中间还有UCC3895), 相对与之前的芯片,后来的这些版本资料相对多很多, 更有利于客户的电路设计.
Hi
调整频率有改善吗? 如果不行,只能通过layout改善,主要在驱动这这边,包括GND.