TMS320F28034: TMDSHVRESLLCKIT_v1.0, How to change the TBPRD?

Shaoxing Ke

Part Number: TMS320F28034

Hi Experts,

I am asking for my customer here.

They use F28034 to develop the LLC and refer our TMDSHVRESLLCKIT_v1.0.

We use the PWMDRV_LLC_ComplPairDB follow up the DPLib.pdf, and set up the MIN_PERIOD#175, MAX_PERIOD#375, and the PWM frequency is right.

But when we change the count mode from TB_COUNT_UP to TB_COUNT_UPDOWN, and set the Min TBPRD = 2*MIN_PERIOD, Max TBPRD = 2*Max_PERIOD, but I scope the TBPRD is always 550.

Could you help me to modify the TBPRD on PWMDRV_LLC_ComplPairDB? Thanks a lot!

over 1 year ago

0 Chen Jiang ti over 1 year ago

TI__Genius 15685 points

Hi Shaoxing,

TMDSHVRESLLCKIT is a legacy kit and the s/w is also not up to date. Is that possible for them to refer to our new devices and LLC design?

Regards,

Chen

0 Shaoxing Ke over 1 year ago in reply to Chen Jiang ti

TI__Expert 3335 points

Hi Chen,

Could you help look into this? Customer want to use F28034 to develop it.

0 Chen Jiang ti over 1 year ago in reply to Shaoxing Ke

TI__Genius 15685 points

Hi Shaoxing,

ok, since this is a legacy code, it may take us some time to figure it out.

Regards,

Chen

0 Shaoxing Ke over 1 year ago in reply to Chen Jiang ti

TI__Expert 3335 points

Hi Chen,

How about the progress here? Any updates here?

If TBPRD is not initialized, will it be a random number on this reference code? We test that if the chip is reset, re-running code and TBPRD will result in a large value # 22316, which is not within our operating limits(Min_PRD = 120, Max_PRD = 350).

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TMS320F28034: TMDSHVRESLLCKIT_v1.0, How to change the TBPRD?