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TPS92518-Q1: 开关频率和电感选择

Part Number: TPS92518-Q1

想请问一下这个元件的开关频率是软件设置还是元件自适应?

在使用过程中发现空载时候电感有啸叫现象,带上负载就不会啸叫,请问可以从哪方面入手解决?

  • HI
        非恒定频率的设定(没有外部电阻之类的控制,也不是芯片内部固定设置),可以说是根据外部条件自适应。

       空载时有波形测试吗?

        注意一下: Don't write 0 (zero) to any of the off-time registers ([LEDx_TOFF_DAC] or LEDxMAXOFF_DAC] unless the use case is well understood and tested.