BQ78350-R2-DEVICE-FW: Please let us know the tolerance of FET ON Time

Statham Su

Genius 4990 points

Part Number: BQ78350-R2-DEVICE-FW

Hello Sir:

We are using BQ78350-R2 FW.

And we measure the ON time has some tolerance.

Please refer the figure as below, that we set 5 seconds but the result is about 4.8 seconds.

Please let us know the tolerance of FET ON Time.

Thanks a lot.

0 Matt Sunna over 4 years ago

Hi Statham,

Can you let me know what the two signals are in the scope capture? And which parameter are you setting for 5 seconds?

Thanks,

Matt

0 Statham Su over 4 years ago in reply to Matt Sunna

Genius 4990 points

Hi Matt:

Please refer the information as below.

About waveform information

CH1 : Pack voltage (8 series)

CH2 : Pre- Discharge Current

About parameter

Please refer the figure as below.

0 Matt Sunna over 4 years ago in reply to Statham Su

Hi Statham,

FET control is evaluated every 250ms, so the time should be accurate to +/-250ms.

Best regards,

Matt

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