BQ76952: Monitoring and Protection without balancing

Luis Suarez

Part Number: BQ76952

Can this IC be used without the balancing feature? We plan to use it for a 16s system for monitoring and protection only. The balancing will be done elsewhere which is why I would like this IC to ignore the balancing features.

Thanks!

over 4 years ago

+1 Matt Sunna over 4 years ago

TI__Guru* 81034 points

Hi Luis,

Yes it can. The balancing feature is disabled by default.

Best regards,

Matt

0 Luis Suarez over 4 years ago in reply to Matt Sunna

Prodigy 50 points

Hi Matt,

Thank you for your answer. Do you happen to know if it would be ok if a single cell is bypassed due to an external balancing?

+1 Matt Sunna over 4 years ago in reply to Luis Suarez

TI__Guru* 81034 points

Hi Luis,

When using the BQ76952 balancing, it knows to mask under-voltage and over-voltage errors during the balancing of a specific cell and the cells adjacent. So if you are controlling the balancing externally it could trigger these protections. However, there are input filter components on the cell measurement inputs, so it depends on the balancing switching. You may want to do sims with the filter components to see what voltages the BQ76952 would observe.

Regards,

Matt

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BQ76952: Monitoring and Protection without balancing