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纹波大,DC-DC 芯片是TPS40055,负载是脉冲电流的

Other Parts Discussed in Thread: TPS40055

DC-DC 芯片是TPS40055,负载是脉冲电流的,负载频率10K-10MHZ可调,就是负载是调制的。电源在负载在某些频率工作时,纹波特别大,什么解决方法吗?