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TPS92641 PWM调光闪烁

Other Parts Discussed in Thread: TPS92641, LM3409

TPS92641  PWM调光闪烁,主要发生在电流第一次上升到最高时,PWM继续增大时,电流突然掉下来,开始有波浪纹波。如下图所示,希望谁解决过这种问题,麻烦告知下,谢谢。电路参数参考官网样板。具体有些出入。