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具有保護電路電池搭配TPS61256使用問題

Other Parts Discussed in Thread: TPS61256

我的電池是含有保護板的PACK,電池在低電壓時候做BOOST to 5V時,當VBAT<2.8v時會啟動保護鎖住輸出後又會被再度解鎖,造成5V不斷開開關關。

是什麼原因無法鎖住電池?

1. VBAT路徑上容值為5.7uf

2. 保護板設定2.8V鎖住VBAT_CONN輸出