BQ25792: Accessing with EV2400 and BqStudio

Eric Castle

Part Number: BQ25792
Other Parts Discussed in Thread: BQSTUDIO, USB-PD-CHG-EVM-01, EV2400, TPS25750

Hello,

I have a USB-PD-CHG-EVM-01, and was trying to connect to it via the J7 connector on the board to my EV2400, and look at the registers via BqStudio. This has not been working, and I'm trying to understand what we're doing wrong.

1) I found the .bqz file on the forum, and placed it into C:\ti\BatteryManagementStudio\config. (Link: https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/970132/bq25792-can-t-find-bqz-file-for-bq25792-in-the-bqstudio-or-in-ti-com)

2) I connected the EV2400 from Port 2 (I2C) to the J7 connector on the EVM.

BqStudio reported no ack from the device, which seems to match what I'm seeing looking with a logic analyzer. I can see it acking messages from the TPS25750 when I power up the board. Any idea what we're doing wrong?

Thanks,

-Eric Castle

over 3 years ago

0 Michael Emanuel35 over 3 years ago

TI__Mastermind 40535 points

Hello Eric,

Have you oriented the EV2400 header as shown in the following FAQ?

e2e.ti.com/.../faq-can-the-ev2400-be-used-to-communicate-with-the-bq25792-through-bqstudio-on-the-board-usb-pd-chg-evm-01

What is the PPHV voltage of TP1?

Regards,

Mike Emanuel

0 Eric Castle over 3 years ago in reply to Michael Emanuel35

Intellectual 710 points

Hi Mike,

Yes, I checked for the ground pin to start with on the J7 port, and confirmed the messages looked well-formed via a logic analyzer.

Thanks,

-Eric

0 Michael Emanuel35 over 3 years ago in reply to Eric Castle

TI__Mastermind 40535 points

Eric,

You may have to play around with it for a bit. Using the EV2400 in this manner presents a multi-primary option for the EV2400 and the TPS25750. Can you try booting the board first and then adding the EV2400?

Regards,

Mike Emanuel

Power management

Power management forum

BQ25792: Accessing with EV2400 and BqStudio