dead band

[S.Irfan]

my question is that how can we control ''dead band'' through programming. i m using atmega16
thank u

 

[KeepItSimpleStupid]

Dead band is 1/the proportional band.

 

[crutschow]

What are you controlling the "dead band" for?

 

[dr pepper]

Your question is a little under explained.
I have coded a push pull smps in software, using 2 fets, to prevent shoot through and generate a dead band I just coded the software to turn both transistors off before chaging state, and then used a nop or 2 to give them time to actually turn off.

Ie:
01 one trans on
00 both off
nop
nop wait a little
10 other trans on
nop
nop
repeat over

 

[S.Irfan]

Thanks for your reply sir.

 

[S.Irfan]

What are you controlling the "dead band" for?

i m controlling 4-n channel MOSFETs full bridge through atmega16

 

[crutschow]

i m controlling 4-n channel MOSFETs full bridge through atmega16

Then dr pepper's solution should work for you.

 

[dr pepper]

I dont know atmel, however if its a 16 bit there could well be a built in pwm system, like on some of the higher spec pics, in which case if you consult the datasheet for that chip there might be a register that sets the deadtime when using the pwm module.
If your fets are under control of just your code then my suggestion would be a start.