UCD3138PFCEVM-026: Specific changes in firmware to scale up single phase PFC

Hello, 

You need some changes in the hardware and firmware to get 600W output. The major change is to scale down current sensing circuit. The EVM outputs 360W, so you need to lower the current sensing gain by 2/5th.  

In the firmware, you need to recompile the firmware using a single phase. I guess you already install CCS 6 or above version. It may have some other minor changes.

Regards,

Hello,

        I have installed latest version of CCS, but not getting exactly what changes to be done in firmware code. Will you please share specific changes in code.

Can you share the link that you used to download the firmware? Make sure we are working on the same firmware.

Yes, 

Here is the link,

https://www.ti.com/tool/UCD3138FW-PFC

I have installed this firmware and now I want to modify this for 600 W ratings.

Thanks. I will look at and feedback to you. Let me temporarily close it.

In the firmware, you need to make the below change.

At the last step, it failed. can you try to use CCS V8, and complier arm_5.2.4? 

I used the below to build .xo file.

"C:/ti/ccsv8/tools/compiler/ti-cgt-arm_5.2.4/bin/armhex.exe" -x 

Hello Sean,

I used CCS V8.0  with compiler arm_5.2.4, but I am getting same error,

Let me consult with team, and get back to you.

You can try below:

Right click on the project-àproperties-àccs build-àsteps-àput commands below to post-build steps

("${CG_TOOL_HEX}.exe" -x "${BuildArtifactFileName}" -o "${BuildArtifactFileBaseName}.x0" -memwidth 8) & (perl ../../build_scripts/checkmem_CCS5.pl cyclone ../"${BuildArtifactFileBaseName}.map" ) & (perl ../../build_scripts/build_CCS5.pl "${BuildArtifactFileBaseName}")

Thank you Sean!!

A quick comment, when you said, thank you, also please click CLOSE this thread.