TPS25751: TPS25751D

Aditya Patil

Part Number: TPS25751
Other Parts Discussed in Thread: BQ25798

Tool/software:

Hi,
I’m currently working on configuring the TPS25751 USB PD controller on our custom board based on the i.MX8ULP-EVK. In our design, the PD controller is connected to the i.MX8ULP SoC over I²C, and there is no external EEPROM present. The TPS25751 is also interfaced with a BQ25798 I²C-controlled battery charger.

I am evaluating the use of the USBCPD Application Customization Tool to generate a configuration binary for the PD controller.

Could you please help clarify the following:

Is the binary configuration approach valid in a setup where TPS25751 is I²C-connected to the i.MX8ULP and there is no EEPROM?
Is loading this binary via I²C at runtime (e.g., during Linux boot) feasible, and will the PD controller function as expected with that configuration?
Are there any recommended tools, drivers, or utilities to perform this binary load from Linux?

This approach would help enable basic bring-up and functional testing before committing to full Linux driver development.
Any guidance or recommendations regarding this method would be greatly appreciated.

Thanks & Regards,

Aditya

PD Controller Battery Charger

3 months ago

+1 Christopher Lim1 3 months ago

TI__Mastermind 37855 points

Hi Aditya,

There is a Patch Burst sequence described in section 5.2 of the TRM that may match what you need. We recommend primarily following Figure 5-1.

It allows customers to program the Patch Bundle (the fw image in the binary used with the EEPROM) over I2C from an MCU or EC. Instead of using the full flash binary and EEPROM, you will generate a low region .c file and load that image to the PD controller on boot. Keep in mind that the PD controller needs this image loaded on every power cycle, so the driver would need to manage this behavior every time the TPS25751 is powered on.

Thanks and Regards,

Chris

0 Aditya Patil 3 months ago in reply to Christopher Lim1

Prodigy 30 points

This helped a lot however it was failing when downloading patch. But I figured it out with this forum query

https://e2e.ti.com/support/power-management-group/power-management/f/power-management-forum/1450091/tps25751-trying-to-use-patch-burst-mode-but-running-into-unexpected-error

Power management

Power management forum

TPS25751: TPS25751D