BQ40Z80EVM-020: Device not detected

Art Mecina

Genius 16655 points

Part Number: BQ40Z80EVM-020
Other Parts Discussed in Thread: BQSTUDIO, BQ40Z80, EV2400

Hello Guys,

Good day.

Our customer is having detection issue with the BQ40Z80EVM-020 as shown on the attached picture.

He already tried the methods in the suggestions on these links but is unsuccessful.

https://e2e.ti.com/support/power-management/f/power-management-forum/835035/bq40z80evm-020-bqstudio-not-supporting-target

https://e2e.ti.com/support/power-management/f/power-management-forum/714117/bq40z80evm-020-how-to-connect-bq40z80evm-020-and-pc

Appreciate your inputs on this.

Thanks in advance!

Art

over 4 years ago

0 Jessica H. over 4 years ago

TI__Genius 11535 points

Hi Art,

How are they powering their EVM? Did they press the WAKEUP button before starting bqStudio? Can you confirm that they have followed all the steps in the EVM User's Guide?

Best,

Jessica

0 Art Mecina over 4 years ago in reply to Jessica H.

TI__Genius 16655 points

Hello Jessica,

According to the customer, he is powering it with a DC power supply. And yes, he did press wake-up button before opening bq studio. And, he have followed all the steps mentioned in the EVM user guide.

Thanks and regards,

Art

0 Art Mecina over 4 years ago in reply to Art Mecina

TI__Genius 16655 points

Hello Jessica,

Just like to update regarding this.

Thanks and regards,

Art

0 Wyatt Keller over 4 years ago in reply to Art Mecina

TI__Guru** 105760 points

Hello Art,

Sometimes the default config in Cell Configuration is different than the application and will cause the gauge to shutdown. Try holding the wakeup button and make sure the system present pin is connected to PACK-.

Sincerely,

Wyatt Keller

0 Art Mecina over 4 years ago in reply to Wyatt Keller

TI__Genius 16655 points

Hello Wyatt,

The customer have tried this one but it did not work for him. Let me know what else can be done.

Thanks and regards,

Art

0 Wyatt Keller over 4 years ago in reply to Art Mecina

TI__Guru** 105760 points

Hello Art,

If you're not auto-detecting the gauge then make sure the correct .bqz is uploaded as well. If they open the bqz manually can they read registers? Does this happen with more than one board? The EVM could be damaged from ESD or other event. The only other thing is bad hardware connection.

Sincerely,

Wyatt Keller

0 Art Mecina over 4 years ago in reply to Wyatt Keller

TI__Genius 16655 points

Hello Wyatt,

Customer is asking for the correct .bqz file so that he can cross check with the files in his directory.

Thanks and regrds,

Art

0 Art Mecina over 4 years ago in reply to Art Mecina

TI__Genius 16655 points

Hello Wyatt,

Good day.

Is it possible to provide customer request for a .bqz file so that he can cross check with the files in his directory?

Thanks and regards,

Art

0 Wyatt Keller over 4 years ago in reply to Art Mecina

TI__Guru** 105760 points

Hello,

The bqz file is available on the product page, that is the one that should be in the config folder of the bqStudio directory.

Sincerely,

Wyatt Keller

0 Art Mecina over 4 years ago in reply to Wyatt Keller

TI__Genius 16655 points

Hello Wyatt,

Are you referring to the "BQ40z80 Device Firmware: 2-Series to 7-Series Battery Pack Manager"?

Thanks to confirm.

Art

0 Wyatt Keller over 4 years ago in reply to Art Mecina

TI__Guru** 105760 points

Hello,

Yes the firmware downloader will have the matching bqz file with it.

Sincerely,

Wyatt Keller

0 Art Mecina over 4 years ago in reply to Wyatt Keller

TI__Genius 16655 points

Hello Wyatt,

Apologies for the delayed response for I was awaiting customer feedback.

The customer tried the bqz file but the LEDs in the BMS don't even come on and its not detected by the laptop.

Thanks and regards,

Art

0 Art Mecina over 4 years ago in reply to Art Mecina

TI__Genius 16655 points

Hello Wyatt,

Any update regarding this?

Thanks and regards,

Art

0 Art Mecina over 4 years ago in reply to Art Mecina

TI__Genius 16655 points

Hello Wyatt,

Any update regarding this?

Thanks and regards,

Art

0 Jessica H. over 4 years ago in reply to Art Mecina

TI__Genius 11535 points

Hi Art,

Can you describe their setup in more detail? What voltage are they using to power up the device? How do they have it connected? Are they powering through BAT+/-? Are they using the onboard EV2400 or an external one?

Best,

Jessica

0 Art Mecina over 4 years ago in reply to Jessica H.

TI__Genius 16655 points

Hi Jessica,

Good day.

I'll update you as soon as the customer sends their feedback.

Regards,

Art

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BQ40Z80EVM-020: Device not detected