• State TI Thinks Resolved
  • Locked Locked
  • Replies 2 replies
  • Answers 1 answer
  • Subscribers 83 subscribers
  • Views 571 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

CCS/TMS320F28377D: TMS320F28377D can I use Apwm on Ecap with deadtime?

junYeoung Park
Prodigy 10 points
Part Number: TMS320F28377D


Tool/software: Code Composer Studio

Hi 

i consider using Ecap as Apwm.

and  Deadtime function is necessary in controlling mosfet

but i can't sure Apwm have deadtime function.

Q1) it is possible using dead time with APWM? Or do you know gate driver having dead time function?

Q2) i found in datasheet that synchronization between Epwm and APWM  is possible. 

and it is possible synchronization with Phase delay between Epwm and APWM?  

  • 0
    TI__Guru 52040 points

    I do not believe we have deadband capability on APWM.

     can you confirm?

  • 0
    TI__Mastermind 24095 points

    Hi,

    junYeoung Park said:
    Q1) it is possible using dead time with APWM? Or do you know gate driver having dead time function?


    You can not add deadtime in APWM mode of eCAP in hardware. One option is to account for deadtime in dutycycle computations and add in software.

    junYeoung Park said:
    Q2) i found in datasheet that synchronization between Epwm and APWM  is possible.


    Yes - Synchronization is possible between Epwm and Ecap in APWM mode.
    Please refer to Sync chain diagram in Technical reference manual - 
    Figure 15-7. Time-Base Counter Synchronization Scheme