TPS53681: Checksum changed after programmed

Emily Tsai

Part Number: TPS53681

Hi,

I have a question, I got a code from TI, and would like to use this code to store it on my product (not EVM board).

But, the checksum has been changed after programming. I knew the checksum would be changed based on we fine tune the content of the code, in this case, I didn't modify any code and just programmed the code into the board, I think the checksum should not be changed.

I try to solve this issue and use a method from another topic that provided that "store Config to NVM before save the project file" , but the checksum still would be changed after programmed.

Can someone help to solve this problem? the code file and design circuit in attached.

--Problem detail--

Checksum of Code file : F229DFA

After programming and checksum of the board became: F229DFB

Compare differences between F229DFA/ F229DFB , the difference is 0xBB User_Data_11. (Fig 1)

I also compare differences between those two files, and the variable is "channel B phase Configuration " from set up "1phase to 2phase". (Fig 2)

Due to our design is 2phase+1phase in actual board, and this change is from the original code file set up "1 phase" become "2 phase".

I was thinking.... Is this root caused by mismatch between the settings and the application?

Will the code have a mechanism to make mandatory changes based on the actual board status? In my point of view, the imported code should have the highest control.

Please help to solve this problem that the code changed issue. Thanks!

--Design Application--

Controller+Powerstage: TPS53681 + CSD95490 (2+1phase)

Platform: Marvell 98CX8514

Power rail: AVDD / VDDH

6011.TPS53681 SD_AVDD and SD_AVDDH 89d_B2_F229DFA.xml TPS53681_89d_Schematic.pdf

Best regards,

Emily.

over 2 years ago

0 Travis Williams over 2 years ago

TI__Expert 8960 points

Hi Emily,

On TPS53681, phase config is set by pin detection of the current sense pins. If the board was designed for 2+1 operation, the controller will detect it.

Thanks,

Travis

0 Emily Tsai over 2 years ago in reply to Travis Williams

Prodigy 10 points

Thanks Travis.

I have another question. If the phase will detect by current sense, why does the current design of another rail that using TPS53681 and apply on 6+2 phase for Vcore, but this config which same column shows "2 phase" ? Based on our design it should be 6 phase. (and no 6 phase selection on GUI like fig.2)

In addition, do you have the default code as the default factory setting can let me reset IC to the original status and try some programming verification?

Thanks.

Best regards,

Emily.

0 Dhanyasree Prem Sankar over 2 years ago in reply to Emily Tsai

TI__Expert 4260 points

Hey Emily,

I am not sure I quite understand the root of your problem. Could you share your program file so that we are able to bring it up on the GUI and see it from our end?

Thanks,

Dhanya Prem

0 Emily Tsai over 2 years ago in reply to Dhanyasree Prem Sankar

Prodigy 10 points

Hi Dhanya Prem,

The code file in attached, and the schematic design also upload here.

Could you help to check if there are potential problems causing this issue? Thanks.

Emily.

3362.TPS53681_89d_Schematic.pdf 8666.TPS53681 SD_AVDD and SD_AVDDH 89d_B2_F229DFA.xml

0 Dhanyasree Prem Sankar over 2 years ago in reply to Emily Tsai

TI__Expert 4260 points

Hi Emily,

We will look through your files and try to debug it. We will get back to you as soon as possible.

Thanks,

Dhanya Prem

0 Emily Tsai over 2 years ago in reply to Dhanyasree Prem Sankar

Prodigy 10 points

Hi Dhanya Prem,

Appreciate your immediate attention to this question, I look forward to hearing from you.

Thanks,

Emily.

0 Dhanyasree Prem Sankar over 2 years ago in reply to Emily Tsai

TI__Expert 4260 points

Hi Emily,

Sorry for the delay in my response. If I understand your question correctly, you are asking why the GUI shows 2 phases for a 6+2 design and a 2+1 design after being programmed?

Channel B will not show 6 and will show 2 because in a n + m configuration, it refers to the m number of phases.

A few follow up questions:

1) Is the hardware/board you have set up match the schematic you send me?

2) When you first open up Fusion GUI and the project file, how many phases does the GUI detect?

So, for the Channel B configuration, by default the setting is 2 phases.

In your screenshot, you mention that after the board has been programmed, the number of phases change to 2 phases. Do you power cycle and then the settings change?

Can you confirm that you are writing to the hardware and storing configuration to NVM correctly? Please refer to the screenshot below with the detailed instructions and let me know if you are still having the same issue.

0 Anne Ngo77 over 2 years ago in reply to Emily Tsai

TI__Genius 9310 points

Hi, Emily,

Can you show us how you import the file (.xml) to device? A few screenshots would be useful.

Regards

Anne Ngo

Texas Instruments

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TPS53681: Checksum changed after programmed