BQ77PL900: Radiation Hardened BMS IC

Barry Carroll

Part Number: BQ77PL900
Other Parts Discussed in Thread: BQ76942

We currently utilize the BQ77PL900 BMS in several of our Battery Products, and have been scoping the BQ76942 for improved Cell Balancing and tolerances. However, we are also scoping Radiation Hardened (for an Aerospace application) the appropriate BMC IC (8-12 Cells).

Can you provide some guidance?

7 months ago

0 Luis H. S. 7 months ago

TI__Mastermind 36500 points

Hello Barry,

The BQ76942 has not been tested for radiation, unfortunately. We have not done this type of test before for our AFE devices.

Have you performed radiation tests for the BQ77PL900?

Best Regards,

Luis Hernandez Salomon

0 Barry Carroll 7 months ago in reply to Luis H. S.

Prodigy 70 points

Hi Luis,

Thank you for your response. We have not performed any radiation-tolerant testing on either of these BMS IC. We are requesting whether TI has any BMS ICs that have been tested and determined to be radiation-tolerant. Please let me know.

Thank you!

Best Regards,

Barry Carroll

0 Luis H. S. 7 months ago in reply to Barry Carroll

TI__Mastermind 36500 points

Hello Barry,

I see! Not that I know of .

However, I will loop-in some people that may be more aware of this and see if they can provide a comment.

Best Regards,

Luis Hernandez Salomon

0 Barry Carroll 7 months ago in reply to Luis H. S.

Prodigy 70 points

Hi Luis,

Ok, thank you very much!

Best Regards,

Barry Carroll

0 Jason Clark 7 months ago

TI__Prodigy 80 points

Hi Barry! I manage TI's Space systems team. In the past, TI has tested some of our Battery Management Products for radiation effects. All of the devices that we tested failed our criteria for rad-hard devices. My team has put together a reference design using our discrete components (ADC, amplifiers, comparators, and a microcontroller) to perform the battery monitoring and cell balancing functions. I would be happy to share more details with you offline if you are interested.

+1 Barry Carroll 7 months ago in reply to Jason Clark

Prodigy 70 points

Hi Jason, that would be awesome! My email address is bcarroll@invocon.com.

Thank you!

Best Regards,

Barry Carroll

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BQ77PL900: Radiation Hardened BMS IC