TIDM-02013: What are the reasons why the DSP does not generate PWM waves?

Wang Xuesong

Part Number: TIDM-02013

Dear expert,

In TTPLPFC_runISR1_lab1(), I have enabled TTPLPFC_AUTO_START to 1 and commented out the protections. I can't think of any other issues that would cause the DSP not to generate PWM waves.

I found that there is this code in TTPLPFC_pwmDriver().

But there is no such code in TTPLPFC_pwmDriver_DC(). Could this be one of the reasons why the DSP does not generate PWM waves?

Can you help me solve this problem?

Please give me some suggestions.

Regards,

Wang

1 个月前

0 Daniel 1 个月前

TI__Mastermind 36825 points

您好

已经收到了您的案例，调查需要些时间，感谢您的耐心等待

0 Links 1 个月前

TI__Mastermind 31310 points

Have you checked the below from previous thread?

TMDSCNCD280039C: TIDM-02013: TMDSCNCD280039C

"Once the counter reaches 100, the relay closes, could you check if "TTPLPFC_clearTrip" is set to 1 in Expressions window. If not please set "TTPLPFC_clearTrip" to 1. Let me know if it works.

Note: Please make sure no load is applied on VBUS until the relay is closed.

0 Wang Xuesong 1 个月前回复 Links

Prodigy 100 points

TTPLPFC_clearTrip is set to 1 when the counter reaches 100.When I perform the DC CHECK in lab1, there is no relevant code to clear the PWM faults when TTPLPFC_clearTrip=1. However, I noticed that the static inline void TTPLPFC_pwmDriver() function contains code for clearing PWM faults, while the static inline void TTPLPFC_pwmDriver_DC() does not have the code shown in the above picture to clear faults. Could this be a problem that causes the PWM waves not to be generated?

+1 Links 1 个月前回复 Wang Xuesong

TI__Mastermind 31310 points

Can you try a bench test to check the PWM by connecting the control card to docking board (with out OBC board).

Also, could you tell me how you procured this board?

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TIDM-02013: What are the reasons why the DSP does not generate PWM waves?