TMS320F28027: Provide phase shift between 2 EPWM modules operating at different period values

Nachiketa Deshmukh

Prodigy 50 points

Part Number: TMS320F28027

Hello,

I want to use EPWM1 for a switching period of 10 us. I want to use EPWM4 for a switching period of 100 us.

I want the TBPRD counter of EPWM4 to start before/after 5us of the TBPRD counter of EPWM1.

I am unable to use the TBPHS function for this as TBPRD values of EPWM1 and EPWM4 are different.

Many thanks for your kind help.

over 2 years ago

0 Yogeshwaran Shanmugam over 2 years ago

TI__Prodigy 500 points

Hi User,

Please expect a couple of days delay for our expert to analyze and respond due to holiday on 4th Jul 2022.

0 Marlyn Rosales Castaneda20 over 2 years ago

TI__Mastermind 23610 points

Nachiketa,

Nachiketa Deshmukh said:
I want the TBPRD counter of EPWM4 to start before/after 5us of the TBPRD counter of EPWM1.

You mean the time base counter (TBCTR)? You can set different values of TBCTR during initialization in order to have EPWM1 and EPWM4 start at different points within their cycles.

Best Regards,

Marlyn

C2000™︎ microcontrollers

C2000 microcontrollers forum

TMS320F28027: Provide phase shift between 2 EPWM modules operating at different period values