EVAL_1K4W_ZVS_FB_SMD, How to work on open loop ?

[User20393]

Hi

I'm debugging on EVAL_1K4W_ZVS_FB_SMD.

I would like to work in open loop first to verify my own power portion.

No idea how to modify the code accordingly

Thanks for yor help 

[RamamurthyAv]

Hi,

            To operate in an open loop (reference duty), you can give a fixed duty value before updating PWM registers.
Also, Refer to example codes and Application notes.
CCU8_application_note
XMC_example_code

Regards
Avinash

[User20393]

dear Avinash

don't get me wrong

could you show me which line in the code I can force the duty cycle for open loop.

I really have no idea

Thanks in advance 

[RamamurthyAv · Accepted solution]

Hi,

For an open loop, we have to give the phase difference instead of the value from the compensator (refer to line number 441 in the attached image).
We would also suggest that you not try this in EVAL_Board.

Best Regards
Avinash