Help for use PWM signals with opposite phase and dead time - Electronic Circuits Projects Diagrams Free

POWERMAN · 25th September 2007, 07:57 PM

Hello,

I would like to generated 2 PWM with opposite phase for driving a push-pull transformer.
I use PIC18F8722 for the first time, usually it's 16F877, but for this project it's smaller.
For run 2 PWM i have understand how, but not yet for generated dead times...
Because PWM's mode are very different and much complex about 16F8xx.

Somebody has already used this µC, and maybe build some routines around this concept?

If you have some ideas for starting my project, i thank you by advance.
Regards.
Donald.

POWERMAN · 27th September 2007, 01:42 AM

Hello everybody, nobody for advices?

Pommie · 27th September 2007, 01:55 AM

If you are familiar with the 16F877 then I would suggest looking at the 16F887 as this has the same enhanced PWM module as the 18 series chips.

Mike.

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25th September 2007, 07:57 PM	(permalink)
POWERMAN	Help for use PWM signals with opposite phase and dead time Hello, I would like to generated 2 PWM with opposite phase for driving a push-pull transformer. I use PIC18F8722 for the first time, usually it's 16F877, but for this project it's smaller. For run 2 PWM i have understand how, but not yet for generated dead times... Because PWM's mode are very different and much complex about 16F8xx. Somebody has already used this µC, and maybe build some routines around this concept? If you have some ideas for starting my project, i thank you by advance. Regards. Donald.

27th September 2007, 01:42 AM	(permalink)
POWERMAN	Hello everybody, nobody for advices?

27th September 2007, 01:55 AM	(permalink)
Pommie	If you are familiar with the 16F877 then I would suggest looking at the 16F887 as this has the same enhanced PWM module as the 18 series chips. Mike.