BQ76952: The hardware tolerance of R(TS_PU) is huge for applications.

Statham Su

Genius 4990 points

Part Number: BQ76952

Hello Sir:

We are calculating the ADC value of temperature.

But we check the datasheet of BQ76952, the R(TS_PU) tolerance is huge.

It is about 20%, we think which will effect the accuracy of temperature sensing.

Would you please provide a recommendations for us?

Thanks a lot.

over 4 years ago

0 WM5295 over 4 years ago

TI__Guru 54715 points

Hi Statham,

The range is mostly for the part to part variation. Temperature calibration is a good idea. Variation with temperature is shown in Figure 7-21 and 7-22 of the BQ76952 data sheet, of course it is a typical like the R(TS_PU_DRIFT) parameter.

0 Statham Su over 4 years ago in reply to WM5295

Genius 4990 points

Hello Sir:

Do you have the CPK value of R(TS_PU)?

Can you provide it for us?

Thanks a lot.

0 WM5295 over 4 years ago in reply to Statham Su

TI__Guru 54715 points

Hi Statham,

Cpk is not available.

0 Statham Su over 4 years ago in reply to WM5295

Genius 4990 points

Hello Sir:

Thanks a lot your feedback.

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Power management forum

BQ76952: The hardware tolerance of R(TS_PU) is huge for applications.