TPS25751: The application issues of chips

Tonyx.wu

Part Number: TPS25751

Tool/software:

According to the hardware description, I can't deceive the 12V PD protocol of this TPS25751D at present. I downloaded the bin file generated by USBCPD_Application_Customization_Tool 1.1.0 to the corresponding EEPROM, and it can also be read through the USB-to-I2C tool. Has this BIN file been used correctly? How to handle this configuration? I did burn this bin into the eeprom. What could be the problem and how should it be solved?

This is a bin file I generated and it needs to be extracted below

drive.uc.cn/.../97ee9cd2e5284

2 months ago

0 Aya Khedr 2 months ago

TI__Mastermind 29882 points

Hi Tonyx,

Thank you for reaching out!

Could you share the .json file associated with the binary file?

Best Regards,

Aya Khedr

0 Tonyx.wu 2 months ago in reply to Aya Khedr

Genius 3895 points

https://drive.uc.cn/s/c07c8a412e034

All are in the link above. Please help take another look. Thank you!

0 Tonyx.wu 2 months ago in reply to Tonyx.wu

Genius 3895 points

Is there any update? Please reply as soon as possible. Thank you!

0 Andrew Su 2 months ago in reply to Aya Khedr

TI__Intellectual 1585 points

Dear Aya,

this is a key project from a top KMM customer, it is in urgency now, would you please help to have a look and help to guide them to fix the issue soon?

thanks a lot!

0 Aya Khedr 2 months ago in reply to Andrew Su

TI__Mastermind 29882 points

Hi Andrew,

I am unable to download the .json file from the link provided. Could you please share the .json file on the E2E thread or using TI drive?

Have you tried to replicate the behavior on an EVM?

Best Regards,

Aya Khedr

0 Tonyx.wu 2 months ago in reply to Aya Khedr

Genius 3895 points

12V3A.zip

as the compressed package

0 Aya Khedr 2 months ago in reply to Tonyx.wu

TI__Mastermind 29882 points

Hi Tonyx,

I tested with the json file provided with a TPS25751EVM and I do not see abnormal behavior.

The device is sinking 12V/3A successfully.

Could you elaborate further on the expectations and behavior observed?

Are you testing on an EVM or your custom board?
Do you have PD logs?

0 henrt wen 2 months ago in reply to Aya Khedr

Prodigy 40 points

In EVM is OK.The device is sinking 12V/3A successfully. In my custom board eeprom is FM24C512

EVM eeprom is CAT24C512

IIC address has some different

,FM24C512N has two iic address. Will this prevent the TPS25751D from reading the firmware?

0 henrt wen 2 months ago in reply to Aya Khedr

Prodigy 40 points

in the custom board, the devices is only sinking 20V .The same firmware in eeprom.

0 Aya Khedr 2 months ago in reply to henrt wen

TI__Mastermind 29882 points

Hi Henrt,

The TPS25751 loads the configuration from an EEPROM with a target address of 0x50 (see below from datasheet).

Do you have an MCU in your system? Can you read the MODE register 3h?

Best Regards,

Aya Khedr

0 henrt wen 2 months ago in reply to Aya Khedr

Prodigy 40 points

I change the ADCIN1=7 ADCIN1=0, the custom board is working now, ADCIN1:R(up)=1 KΩ R(DOWN)=47KΩ ADCIN2 tie to GND . I think the TPS25751D is working in safe mode now . And then custom board sinking 12V.

Before this change, ADCIN1:R(up)=110 KΩ R(DOWN)=47KΩ .

Dose is a problem with my hardware modification?

0 Aya Khedr 2 months ago in reply to henrt wen

TI__Mastermind 29882 points

Hi Henrt,

henrt wen said:
Before this change, ADCIN1:R(up)=110 KΩ R(DOWN)=47KΩ .

The ADCIN setting here would decode to a value of 4 which would set the dead battery configuration to "NegotiateHighVoltage". This dead battery configuration should not be used when the configuration is loaded from an EEPROM.

Your understanding is correct, SafeMode is the recommended dead battery configuration for your application.

Best Regards,

Aya Khedr

0 henrt wen 2 months ago in reply to Aya Khedr

Prodigy 40 points

Hi,Aya Khedr

the TPS25751D is sinking 12V now，And then ,i also want TPS25751D to be a source .It can supports external devices such as USB flash disk.

.How to config it ?

Here is my test step .

1.Do not connect the PD adapter through J3 .

2.After I supply 5V power to PP5V. I connect a USB flash disk to J3 .Detected output voltage of 4.4V through multimeter.

question：Is this the correct way to test the source?how should i test it ?

0 Aya Khedr 2 months ago in reply to henrt wen

TI__Mastermind 29882 points

Hi Henrt,

To configure the device as a DRP (dual-role port), please select the following configuration in the GUI Tool.

Also, please refer to the EVM User Guide for more information.

Best Regards,

Aya Khedr

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TPS25751: The application issues of chips