BQ77216: UV and OV detection circuit inside

Shinichi Inoue

Guru 19671 points

Part Number: BQ77216

Dear Specialists,

My customer confirmed the Accuracy of OV hysteresis and UV hysteresis and has a question.

https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1161685/bq77216-accuracy-of-ov-hygerisis-and-uv-hygerisis?tisearch=e2e-sitesearch&keymatch=BQ77216#

They'd like to know the UV and OV detection circuit inside.

Could you please let us know.

According to the datasheet P.9 Functional Block Diagram, it consist of comparator and reference.

How is the hysteresis circuit constructed?

Does the OV/UV detection accuracy and hysteresis mainly depends on the accuracy of the UV/OV reference?

I appreciate your great help in advance.

Best regards,

Shinichi

over 1 year ago

0 Matt Sunna over 1 year ago

TI__Guru* 77283 points

Hi Shinichi,

I cannot share details of the IP, but both the threshold and hysteresis consist of a hardware comparator and accurate internal voltage reference. I cannot share more details beyond that.

Best regards,

Matt

0 Shinichi Inoue over 1 year ago in reply to Matt Sunna

Guru 19671 points

Hi Matt,

Thank you for your reply.

I'll share this information with the customer.

I appreciate your great help and cooperation.

Best regards,

Shinichi

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BQ77216: UV and OV detection circuit inside