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BQ2433充电尖啸声要如何抑制

Other Parts Discussed in Thread: BQ24133

BQ24133在充电时会产生尖啸声,用BQ24133EV板也会有这种现象,尤其是当充电电流在400----500mA 左右最明显(可以通过调节供电电源的电压来实验,如果是用稳压电源供电),请教下这种尖啸声要如何抑制。

  • 另一个问题是因为电池用的是高倍速率锂聚合物,吸电流能力会大于4A, 即使用EV板(默认充电电流2A)也会在上电时充电电流上升到4A左右,一会儿后充电电流掉到1A左右,如何维持充电电流在2A?