BQ25150: Safety certification test

Hardy Xue

Expert 3590 points

Part Number: BQ25150
Other Parts Discussed in Thread: BQ25155

Hi Team,

The customer would like to do safety test for IEC62368. Do we have any method to do over charging and over discharging?

Best regards,

Hardy

over 3 years ago

0 Gautham over 3 years ago

TI__Genius 12475 points

Hi Hardy,

Can you clarify more details on the overcharge and discharge? Are you referring to table G9?

We have a similar device BQ25155 which has already completed the IEC 62368 certification.

Regards,

Gautham

0 Hardy Xue over 3 years ago in reply to Gautham

TI__Expert 3590 points

Hi Gautham,

Because customer's battery hasn't IEC 62368 certification. So they want to do overcharge and deep discharge intentionally.

Overcharge: Could we use resistor divider to decrease BAT pin voltage?

Deep discharge: Do you have any suggestion for that?

Best regards,

Hardy

0 Gautham over 3 years ago in reply to Hardy Xue

TI__Genius 12475 points

Hi Hardy,

Do they have a protector module on the board? Why not just increase VBATREG @VBAT_CTRL Register (Address = 0x12) to a higher value for overcharge? For battery overdischarge- you can set the BUVLO to a lower value @BUVLO Register (Address = 0x16) to a lower threshold on I2C.

This is easier than hardware modifications.

Regards,

Gautham

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BQ25150: Safety certification test