求输入48V左右,输出恒流1A左右,输出电压变化范围28V-47V可以更宽,便宜点的片子
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TPS92513HV 这是一个LED driver,可以实现恒流
TPS92513HV设计过程中发现的问题。
此IC,在PDIM脚上输入占空比为非100%的PWM调光信号时,启动时,输出电流有严重过冲现象!
下图是PWM调光信号占空比为20%时,启动时,输出电流的波形图。
请问上述问题,能通过调整IC外围解决吗?