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TPS92512HV驱动电路电感异响

Other Parts Discussed in Thread: TPS92512HV

    我用贵司的TPS92512HV芯片设计的驱动电路,输出电流1.5A ,调光输出都正常,但就是随着电流的增加电感就发出异响,我用的是48V输入,输出带9颗LED,每颗LED大概3.1V左右,用的100UH能过3A电流的电感,频率250HZ左右,还有就是频率增大很容易炸IC,不知道啥原因,电路参数基本如说明书例子匹配的,如下图