TMS320F280049C: Matlab Simulink Embedded Coder ePWM Synchronization

Ian Z

Part Number: TMS320F280049C

Hello,

I'm using Matlab Simulink with the "Embedded Coder Support Package for Texas Instruments C2000 Processors" Addon.

I want to create 4 PWM - Signals. These 4 PWM - Signals must be phase-shitfed to each other.

I am using ePWM 1~4. I am able to synchronize ePWM 1~3. However, ePWM 4 cannot be synchronized with the other three and the phase difference is random.

I learn that ePWM 1~3 belong to one group and ePWM 4 is another group. But how should I synchronize the four of them?

Here is my Network-construction:

Here are the respective PWM settings.

Thank you so much.

over 5 years ago

0 Santosh Jha over 5 years ago

TI__Guru 50531 points

Hi Lan,

Thanks for reaching out to TI e2e. I am contacting MathWorks expert to take a look and we will respond shortly.

0 venkatesh chilapur over 5 years ago in reply to Santosh Jha

Mastermind 6460 points

Hi,

Please do the following and that should do the trick.

The reset init value for EPWM4SYNCIN bitfield is 7h as captured below, we need set this to EPWM1SYNCOUT to get it to work.

0 Ian Z over 5 years ago in reply to venkatesh chilapur

Prodigy 20 points

Thank you so much.

That perfectly solves my problem.

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TMS320F280049C: Matlab Simulink Embedded Coder ePWM Synchronization