BQ40Z50-R2: MFC_ENABLE_A

Fabio Gou

Expert 4405 points

Part Number: BQ40Z50-R2
Other Parts Discussed in Thread: BQSTUDIO

Tool/software:

The customer is using BQ40z50R3.

When in sealed mode, why gauge still could be emergency shutdown and wake up?

over 1 year ago

0 Siddharth Venkatesan over 1 year ago

TI__Intellectual 2020 points

Hello Fabio,

Shutdown is one of the few commands that are available even when sealed. The SBS commands section of the TRM should have all the available commands accessible when the gauge is sealed.

www.ti.com/.../sluubk0b.pdf

Regards,

Siddharth

0 Fabio Gou over 1 year ago in reply to Siddharth Venkatesan

TI__Expert 4405 points

So in BQstuido, it is a mistake?

0 Fabio Gou over 1 year ago in reply to Siddharth Venkatesan

TI__Expert 4405 points

Besides， there is no any description about MFC command in table 14-1.

Please double confirm this.

0 Siddharth Venkatesan over 1 year ago in reply to Fabio Gou

TI__Intellectual 2020 points

Hello Fabio,

BQstudio says Shutdown is available in sealed mode. I will look into the MFC Command and get back to you.

Regards,

Siddharth

0 Fabio Gou over 1 year ago in reply to Siddharth Venkatesan

TI__Expert 4405 points

Thanks!

Please help to confirm this.

0 Siddharth Venkatesan over 1 year ago in reply to Fabio Gou

TI__Intellectual 2020 points

Hello Fabio,

MFC stands for Manual FET Control. The MFC ENABLE command can be used to let the user control the FETs, which can in turn be used to control Emergency FET Shutdown modes. This is not available when the gauge is sealed.

Regards,

Siddharth

Power management

Power management forum

BQ40Z50-R2: MFC_ENABLE_A