TMS320F28379D: HRPWM high resolution with CLB

Jitendra Jain

Dear TI expert,

We're able to run the high resolution examples. But after PWM outputs is routed through CLB OutLUT block, high resolution is lost.

How can we achieve high resolution after CLB?

Thanks.

Regards,

Jitendra

over 2 years ago

0 Ryan Ma over 2 years ago

TI__Mastermind 27736 points

Hi Jitendra,

If the CLB is configured to sync the ePWM input, then HRPWM features will not work because the CLB is clocked at 100 mhz, your resolution is limited to 10ns and not 180ps. It is not recommended to have the ePWM input signals not configured to be synchronized within CLB.

Best,

0 Jitendra Jain over 2 years ago in reply to Ryan Ma

Intellectual 325 points

Hi Ryan,

Thanks. We're using CLB for straight forward logic operations on EPWM1A and EPWM1B, without any state machine or timer functionality.

Regards,

Jitendra

0 Ryan Ma over 2 years ago in reply to Jitendra Jain

TI__Mastermind 27736 points

Hi Jitendra,

Did the above answer help with your question? If so, we can close this thread.

Thank you,

0 Jitendra Jain over 2 years ago in reply to Ryan Ma

Intellectual 325 points

Hi Ryan, thanks.

You may close the thread.

We are looking for the solution on how to achieve high resolution with some simple logic gates operation. Let me know if you can suggest something.

Regards,

Jitendra

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TMS320F28379D: HRPWM high resolution with CLB