MSPM0L1306: How to make C1 of TMIG4 a complementary output

Hi Sal,

Thank you very much.

Which items should I check when configuring in Sysconfig?

Best Regards,

Ito

Hi Ito,

Here set the initial value:

For the event behavior, user should manually modify it in application code:

The sysconfig generated code will auto set the event behavior.

B.R.

Sal

Hi Sal,

Thank you for your help.

The TRM has a description of ”Complementary PWM output with programmable deadband insertion” only for TIMA.
I understand that this means that the deadband can be set by register operation, not that the complementary output is not possible with TIMG.

In fact, when I checked the waveforms, I succeeded in setting the deadband by adjusting the complementary output and the duty cycle of C0 and C1.

If I can suppress the first Low to High part, the problem will be solved, but is there any way to do it?

First I would like to check if it is really possible to set up complementary outputs in TIMG, then I would like to set them up in TIMA.

Best Regards,

Ito

Hi Sal,

I want to create a waveform like the following.

I have heard that in C2000, there is a way to suppress the output by matching the counter value at timer startup with the complementary side compare match value.

Best Regards,

Ito

Hi Sal,

Is it possible to make it look like the image (green waveform) in TIMG?
Please answer this question.

Best Regards,

Ito

Hi Sal,

Please answer this question.

Ito

Hi KZ,

Sorry for the delay. I am on business travel this week, so I need back to office and update in early next week. Thanks for your patience.

B.R.

Sal

Hi Sal,

Thank you for your reply.

I'm sorry to rush you.

Best regards,

Ito

Hi Sal,

We are checking if it is possible to suppress the initial output of C1 by setting the compare match value to the initial value of the timer counter.
As a result of this work, the initial output of C1 could not be suppressed, but Duty could be controlled.

・The complementary side's compare match value is set to the timer counter immediately after the timer is started by DL_TimerG_startCounter.
・DL_TimerG_startCounter clears the timer counter value, so the counter value is updated after the timer starts.

xxx is added to check the acquired compare match value

uint32_t xxx = 0;

int main(void)
{
SYSCFG_DL_init();

xxx = DL_TimerG_getCaptureCompareValue(PWM_0_INST, DL_TIMER_CC_1_INDEX);
DL_TimerG_startCounter(PWM_0_INST);
DL_TimerG_setTimerCount(PWM_0_INST, xxx);

while (1) {
__WFI(); 
}
}

If I can suppress the initial output of C1, the problem is solved.

Best Regards,

Ito

Hi Sal,

Thank you for your help.

Customer was using Center-aligned instead of Edge-aligned to set deadtime with different Duty for C0 and C1.

Is it possible to get the desired waveform even with center-aligned?

Also they try TIMA settings.

Can you show me a screenshot of the Sysconfig setup  to produce the above complementary waveforms in TIMA?

Best Regards,

Ito

Hi KZ,

For TIMA, set the below:

And, actually the original waveform is correct. That is the complementary waveform.

The waveform you want is not a complementary PWM, if you capture the timing of the PWM generation.

If you do want this: Invert C0 rather than invert C1.

B.R.

Sal

Hi Sal,

Thanks for providing the waveform.

Is Center-aligned PWM Mode okay?

Best Regards,

Ito