BQ76940: BQ76940, Response time for protection is different than mentioned

由於紫外線只有1秒，4秒，8秒，16秒延遲，所以你100％延遲時間為4秒（欠壓）。

我之前有過這個問題。

我嘗試了兩種方法

1.延遲1秒

2.使用MCU來決定反應。（發送DSG或CHG命令。）  

 

You 100% put delay as 4 sec.( Under voltage) because UV just 1s, 4s, 8s, 16s delay.
I had that problem before.

I tried two methods

1. put delay as 1 sec.

2. used a MCU to decide the reaction. (send DSG or CHG command.)

and because the 250ms detection
all of the voltage protect

And I don't know why 940's OV UV protect tolerance scope (+-500ms)

So... if you use a MCU to decide the reaction that will be batter (+-250ms)

Sorry, I am using BQ76940EVM with BQ78350-R1, so I fix CUV as 2500 mV and delay is 2s. But when I tested I am getting 3.6 sec as delay between detection and reaction ( Time between detecting under voltage and MOSFET switching OFF)

Oh, 350 + 940 ~

you can see this last year I posted. (at the bottom.)

e2e.ti.com/.../491331

Thank ThomasCosby again.