EM1402EVM: EM1402EVM : Active Balancing Demo Problem

Omkar Teli73

Part Number: EM1402EVM

Hi,

I am facing the same problem faced by question asked before by another guy previously, tagging that thread with the same.

FYI link : https://e2e.ti.com/support/power-management/f/196/t/608195?EM1402EVM-Active-balancing-demo-problem

i am facing same problem my code also getting stuck there.

over 6 years ago

0 Taylor Vogt over 6 years ago

TI__Genius 17370 points

Hi Omkar,

Can you explain which issue you are experiencing exactly in this thread? There are multiple things included here. And please clarify if you are using the EM1402EVM and example code or custom changes.

Best Regards,

Taylor

0 Omkar Teli73 over 6 years ago in reply to Taylor Vogt

Intellectual 260 points

Hi Taylor,

my code is also hangs, it goes in while(1) as shown in tagged thread snap.

I am using EM1402EVM (rev B board) and i am using TIDM-TMS570BMS Software code. available at

http://www.ti.com/tool/TIDM-TMS570BMS?eloquaCampaignId=&utm_campaign=det-null-null-jackrefdesign-aut-null-null-ww&utm_medium=email&utm_source=Eloqua&elqTrackId=2bbfc54447654213af91577af55dec73&elq=a709ff629b64426ab08e26692fc00e50&elqaid=2834&elqat=1&elqCampaignId=

Best Regards,

Omkar Teli

0 Omkar Teli73 over 6 years ago in reply to Omkar Teli73

Intellectual 260 points

We are trying to find problem why it is hanging. above is the snap of debugging where it is hangs.

following is the command 0x00 meaning that we are sending here.

so we are sending 0x00 to EMB1428 to open all switches.

But in return we are getting response 0xC0 so as per format 0xC is fault code followed by command that we had sent. So we had sent 0 in command so we are getting 0xC0.

following is the meaning of fault code that we have received here

So DONE went when EN is high so that is the problem.

I have read one para also in datasheet that is below

Why is it so how to resolve this?

0 Taylor Vogt over 6 years ago in reply to Omkar Teli73

TI__Genius 17370 points

Hi Omkar,

Sorry for the delay, as mentioned these parts are in the process of NRND and we understand this may be an issue with the example code so we are looking into methods to resolve this. Have you had any success with a workaround for this? As David mentioned in the other thread, it may have something to do with this: "One thing that you may want to try, if possible: add some delay, so that CS doesnt change states. It should only be a couple hundred ms, i would guess.

I do know that this is something that was relatively common (running into issues with the time it takes for the converter to ramp down current to 0, and consequently change the state of the "DONE" pin")"

Regards,

Taylor

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EM1402EVM: EM1402EVM : Active Balancing Demo Problem