Insert deadtime for PWM generated by eMIOS

[EmilyZhou8]

Hi,

I am finding documents about inserting deadtime for PWM generated by eMIOS of MPC5XXX. I only found  the document AN4658 mentioning about PWM deadtime on page 10. Is there any document with demo about inserting deadtime for PWM using eMIOS? 

Thank you very much!

Emily

[petervlna · Accepted solution]

Hello,

Please refer to the reference manual for dead time insertion in eMIOS channels:

For example in this mode:

Best regards,

Peter

[EmilyZhou8]

Hi Peter,

Thank you for your reply which helps a lot. I did successfully use OPWMC mode to generate PWM with dead time. But I don't understand why I should add "EMIOS.CH[1].CCR.B.UCPREN = 1; /* Enable prescaler; uses default divide by 1 */", or else PWM won't be generated. I attached my code blow.

Thank you very much!

Best Regards,

Emily

[petervlna]

Hello,

From reference manual:

So you clock to pwm is not generated in case it is 0.

Best regards,

Peter

[EmilyZhou8]

Thanks a lot