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BQ79631-Q1: Bq79631-q1

Part Number: BQ79631-Q1

Hi, 

We are trying to sense VS2 and VS3 ADC line voltage in order to measure battery pack voltage.

VS2 is connected to TSREF

The VS2 digital count is 14786.

We are also sensing TSref directly whose digital count is 29458.

For TSref we are using 169.54 uV/LSB multiplying factor to get analog value which is coming to be 4.99 V.

However, its not clear what multiplication factor to be used for converting VS2 and VS3 into analog value.

VS3 DMM voltage is 7.8 V and digital count is 50624.

If we take Vlsb_adc which 190.73 uV/LSB then the analog voltage is 9.65 V which is not matching with DMM value?

Can you help us to understand the conversion factor?