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TLV61070A: 关于TLV61070A输入电压比输出电压大时纹波过大问题

Part Number: TLV61070A

你好,目前我使用TLV61070A设计一款升压电路,输入电压为2V~4.2V,输出电压为3.5V,当输入电压在3.4V以下时,电路无任何异常。当输入电压大于我的输出电压时,输出的两个22uF电容会发出啸叫,并且纹波有时高达150mV。请问在现有电路上需要怎么优化呢?