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BQ24610充電問題,VTTC電壓值

Other Parts Discussed in Thread: BQ24610

你好,有几个问题

BQ24610電路设定如下

  1. The battery pack is 2-Cell.
  2. ISET1 is set at 1.5A
  3. ISET2 is set at 0.2A
  4. ACSET is set at 1.7A
  5. Rsr = 0.01Ohm
  6. TCC pin is connected to 0.1uF
  7. VFB pin is set at 2V when the battery is fully charged at 8.4V
  8. TS pin is valid and (the resistors are set at the correct value)
  9. CE pin is pulled to VREF
  10. All other components followe the reference design/schematic

1. Pin VTTC接了一个0.1uF电容到GND,

a. 当没有接电池时,该pin电压为1.25V。

b. 当接了电池时,该pin会随着电池电压变化,大约落在1.10V~1.00V之间,这样正常吗?

2. 当电池电压为6.8V~7V左右时,插上适配器,充电行为正常,约莫三个多小时后,电池电压升至7.88V~8V时,充电无故停止,是甚么原因呢?

3.接续2,重新拔插适配器,充电电流仍为1.5A,但约莫20~30分钟之后又会自动停止充电,是甚么原因呢?

Thanks

插上适配器