TPS25772Q1EVM: I2C Commands/Register(Software) Documentation

Kevin Richardson

Part Number: TPS25772Q1EVM

Are there I2C commands that can be sent to the TPS2257Q1EVM that can disable/enable the VBUS output to the UUT? Is there any software documentation for writing/reading registers that I assume the GUI is simulating? Thanks!

over 3 years ago

0 Kuno Wu over 3 years ago

TI__Mastermind 18556 points

Hi Kevin,

Will reply to you soon.

Thanks,

Kuno.

0 Jianhua Liu over 3 years ago

TI__Intellectual 1000 points

Hi Kevin,

Can you help to let us know what application are you using TPS2257Q1 for? Because we are curious why need to Disable/Enable VBUS through I2C command. Thanks.

Jianhua

0 Kevin Richardson over 3 years ago in reply to Jianhua Liu

Prodigy 50 points

I am looking into automating power switching between various power sources. In order to simulate a hard disconnect, if there is an I2C command that disables the output/enables it, it would help with automating power source switching. Any help would be appreciated!

+1 Jianhua Liu over 3 years ago in reply to Kevin Richardson

TI__Intellectual 1000 points

Hi Kevin,

For automotive PD devices, our firmware was developed to run by itself without requirement for an external microcontroller to manage PD functions. This is different from our catalog/consumer PD controllers where notebook customers always have another MCU for this purpose. So cannot through i2c to do this.

You can use the Enable Pin to disable/Enable the device.

Thanks

Jianhua

0 Kevin Richardson over 3 years ago in reply to Jianhua Liu

Prodigy 50 points

Thank you for confirming!

0 Jianhua Liu over 3 years ago in reply to Kevin Richardson

TI__Intellectual 1000 points

Thank you Kevin.

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TPS25772Q1EVM: I2C Commands/Register(Software) Documentation