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