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TPS54202 负载能力差，请教一下什么原因导致的

user5263038
Other Parts Discussed in Thread: TPS54292

tps54292，带4个9g小舵机，属于感性负载； 电流到440ma左右就输出就会变为0，38ms左右恢复，并且平时输出波动也挺大的。