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TPS92641EVM: 关于电感啸叫声如何处理?

Part Number: TPS92641EVM

       各位,好!

       问题点是:LED驱动输出控制12颗LED,后部分为单点控制LED电路。当点亮其中3颗电感的啸叫声很微弱,点亮其中6颗声音会加大,至12颗全亮声音很强烈刺耳。

       请教一下,是如何产生的?

       谢谢!