TPS54319的DC/DC电路,输入电压5V,输出电压3.3V给系统的3G模块。
当3G模块待机时,只消耗150mA左右的电流,此时电路持续发生细细尖尖的啸叫,好像是来自电感。
电路具体参考附件。
请教为什么会发生啸叫?
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TPS54319的DC/DC电路,输入电压5V,输出电压3.3V给系统的3G模块。
当3G模块待机时,只消耗150mA左右的电流,此时电路持续发生细细尖尖的啸叫,好像是来自电感。
电路具体参考附件。
请教为什么会发生啸叫?