BQ76952: BQ76952 feasibility for 16S hardware BMS

pooja kattimani

Part Number: BQ76952
Other Parts Discussed in Thread: BQ77915

Tool/software:

Hi,

I am designing a 16S hardware BMS. Is it feasible to use the BQ76952 Battery Monitor without a microcontroller, and how can it be implemented in a hardware-based BMS?

Best regards
Pooja

7 months ago

0 Alexis_H 7 months ago

TI__Genius 17755 points

Hello Pooja,

It is feasible to use our device without an MCU; however, you would need to OTP the device first.

To OTP the device, you would need a separate board with specific voltages and an MCU. Section 3 OTP Programming in the BQ769x2 Calibration and OTP Programming Guide can assist in how to OTP our device.

Best Regards,
Alexis

0 pooja kattimani 7 months ago in reply to Alexis_H

Prodigy 80 points

Hi Alexis,

Thank you for response, could you suggest reference design with OTP programing.

Best Regards,
Pooja

0 Alexis_H 7 months ago in reply to pooja kattimani

TI__Genius 17755 points

Hello Pooja,

The reference designs for BQ76952 can be found on the product page as shown in the picture below:

Please let me know if you have any issues accessing those reference designs.

Best Regards,
Alexis

0 pooja kattimani 7 months ago in reply to Alexis_H

Prodigy 80 points

Hi Alexis,

For a BQ76952 reference design using a microcontroller, is there a 16-series stackable protector IC available, similar to the BQ77915, which is a 5-series stackable ultra-low-power primary protector?

Best Regards,

Pooja

0 Alexis_H 7 months ago in reply to pooja kattimani

TI__Genius 17755 points

Hello Pooja,

The BQ76952 is stackable as well. Please refer to this application note, Design Considerations of Stacked BQ769x2 With High-Side N-MOSFET, with the TIDA-010247 reference design.

Best Regards,
Alexis

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BQ76952: BQ76952 feasibility for 16S hardware BMS