BQ4050: 激活电压

Jonas Zhang

Part Number: BQ4050
Other Parts Discussed in Thread: BQSTUDIO

目前收到客户反馈激活电压偏低，标准2.05-2.45V，实际1.4V就可以激活了；随机抽查100pcs电池激活电压都在2.7V以上，对客户退回电池检测激活电压是2.48V与抽取的100组数据差异比较大（测试方法：使用直流电源从1.4V按照0.01V标准向上加电压，看示波器激活时的电压），

1.4V这个是客户测试的，我们复测退回电池IC激活电压是1.98V(靠近IC脚位，对应电池激活电压是2.47-2.50V（电池包PACK+，Pack-)；取正常电池激活电压在2.75V以上，对应IC激活电压在2.22V。

帮忙确认下原因，谢谢。

8 个月前

0 Star Xu 8 个月前

TI__Guru*** 130456 points

您好，正在查询，稍后回复。

0 Star Xu 7 个月前回复 Star Xu

TI__Guru*** 130456 points

您好,请参考下面内容

How are they ensuring that the device is awaked? A good technique I apply is having BQStudio open with the refresher ON. The screen will go gray when there's no communication (not awake) and green when there's communication (awake). They can do a voltage sweep in the power supply to determine the wake up voltage.

I have tested this myself and most of the time the wake up voltage turns out to be 2.45V. This varies from device to device.