BQ79606A-Q1: BQ79606 Safety Manual SM107 issues

Zizhen Yu

Prodigy 120 points

Part Number: BQ79606A-Q1
Other Parts Discussed in Thread: BQ79606-Q1

Tool/software:

Hi TI Team:

When we using SM107, the BQ79606 will report this fault somtimes.

we are confuse whether the SM107 can only be executed during single conversion mode for Cell ADC and AUX ADC?

Thank you.

10 months ago

0 Quentin Silic 10 months ago

TI__Expert 7000 points

Hello Zizhen,

Is this what you are referring to?

This should be sample when the ADC is on and in continuous mode.

Best,

Quentin

0 Zizhen Yu 10 months ago in reply to Quentin Silic

Prodigy 120 points

Hi Quentin:

The BQ79606-Q1 SM107 is that:

Please refer to this and investigate the question.

Thank you!

0 Quentin Silic 10 months ago in reply to Zizhen Yu

TI__Expert 7000 points

Hello Zizhen,

This SM can only be run when the ADCs are in continuous mode.
Is this the case when the SM triggers?

Best,

Quentin

0 Zizhen Yu 10 months ago in reply to Quentin Silic

Prodigy 120 points

Hi Quentin:

Yes, currently in our project, we use this SM in continuous mode, and this SM will be triggered sometimes, and we cannot get the trigger pattern.

Best Regard!

0 Quentin Silic 10 months ago in reply to Zizhen Yu

TI__Expert 7000 points

Hello Zizhen,

Do you have any idea as to what you are doing when this SM triggers?

Best,

Quentin

0 Zizhen Yu 10 months ago in reply to Quentin Silic

Prodigy 120 points

Hi Quentin:

we just configure Cell ADC running in continuous mode, and select corresponding cell via AUX_CELL_SEL, then we read the LP_FILT bit in SYS_FAULT3. But sometimes, the LP_FILT bit is set to 1, and next time, ti back to 0.

We don't know what happened in BQ79606, so we want to ask help from your side.

Best Regards!

0 Quentin Silic 10 months ago in reply to Zizhen Yu

TI__Expert 7000 points

Hello Zizhen,

The answer to this question is not immediately apparent.

Could I get a full pseduo-code for everything you are doing before and after this SM triggers?

Best,

Quentin

Power management

Power management forum

BQ79606A-Q1: BQ79606 Safety Manual SM107 issues