TMS320F28379D: ePWM, programming

kudithi nageswararao

Expert 1055 points

Part Number: TMS320F28379D
Other Parts Discussed in Thread: CONTROLSUITE, C2000WARE

i want generate PWM wave for inverter with unipolar pwm switching scheme...how can i write the program for this.

this is the way to generate ...

in my case Fcr=20Khz

Image result for unipolar pwm switching scheme programing with TMS320F28379D

over 8 years ago

0 Elizabeth Joy over 8 years ago

TI__Expert 5940 points

Hello,

Have you learned about the Time-Base submodule of the EPWM? The TBPRD register is used to configure frequency and the TBPHS register is used for phase control. The Technical Reference Manual EPWM chapter and EPWM examples in ControlSUITE/C2000Ware will be helpful.

Device support examples: C:\ti\controlSUITE\device_support\F2837xD\v210\F2837xD_examples_Cpu1
Digital Power library with PWM configurations: C:\ti\controlSUITE\libs\app_libs\digital_power\f28x7x_v1.0

Regards,
Elizabeth

0 kudithi nageswararao over 8 years ago in reply to Elizabeth Joy

Expert 1055 points

Thank you Elizabeth
how could i get the Time-base submodule of the PWM ? do we have any notes /videos
i am using technical reference Manuel of ePWM
2. i am using C2000ware examples as well...for this case which one i have to follow (example)

0 Elizabeth Joy over 8 years ago in reply to kudithi nageswararao

TI__Expert 5940 points

Hello,

You can refer to the F28x7x Multi-Day Workshop. The Control Peripherals chapter will be helpful for learning about the EPWM.
processors.wiki.ti.com/.../C2000_Multi-Day_Workshop

Although there may not be an existing example with your desired configuration, I suggest learning to configure EPWM frequency and phase-shifting.

The epwm_up_aq example can show how to configure the TBPRD register for frequency.
C:\ti\controlSUITE\device_support\F2837xD\v210\F2837xD_examples_Cpu1\epwm_up_aq

This file along with others in the folder show phase-shifting and other configurations.
C:\ti\controlSUITE\libs\app_libs\digital_power\f28x7x_v1.0\CNF\ PWM_1ch_Cnf.c

Regards,
Elizabeth

0 kudithi nageswararao over 8 years ago in reply to Elizabeth Joy

Expert 1055 points

Thank you Elizabeth

i downloaded all files and i am working on it.

i need one more help...how can i see the output waves in the simulator mode with out connecting the external CRO(oscilloscope)...

0 Elizabeth Joy over 8 years ago in reply to kudithi nageswararao

TI__Expert 5940 points

Hi Nageswara,

You generally will need an oscilloscope or logic analyzer to see these signals. Another option may be using TI C2000 Support from Embedded Coder Simulink provided by MathWorks. You can learn more at the MathWorks C2000 Package site:
www.mathworks.com/.../examples.html

Regards,
Elizabeth

0 Brian McKay over 8 years ago in reply to Elizabeth Joy

Mastermind 9005 points

Also more info here: e2e.ti.com/.../484814

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TMS320F28379D: ePWM, programming