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关于TPS92691

Other Parts Discussed in Thread: TPS92691EVM-752

TI工程师好:我是按照TPS92691EVM-752这块开发板设计的电路,我现在接LED工作电流大概是2A,PWM周期在900KHZ,电感啸叫声很大,如果我把PWM直接给定值,虽然工作在最大电流也没有啸叫声。

请TI大神帮忙看一下,谢谢!