IRS20955 Help!

Sep 10, 2007 3 Replies
H

Hi people,



I made a class D amplifier circuit with a IC driver IRS20955 and Mostfets for output. I test it, but it seem to be wrong. When I input PWM signal (50% duty cycle), The output signal's waveform is nearly sine wave. Is it right???? An Class D amplifier with PWM(50% duty cycle) is output signal should be a DC waveform.



Can anyone clarify for me?



Him Lam



Vote
Twitter Facebook LinkedIn
P

"Himlam8484"

** Go figure what the output filter does:

formatting link

Note that the average value of a sine wave is zero.

....... Phil

Vote
Twitter Facebook LinkedIn
H

Thanks for reply, i will check it now!

Him Lam

Vote
Twitter Facebook LinkedIn
J

I think you have some misconceptions of a class D amplifier.

"I\'m never wrong, once i thought i was, but was mistaken" Real Programmers Do things like this. http://webpages.charter.net/jamie_5
Vote
Twitter Facebook LinkedIn

Join the Discussion

Have something to add? Share your thoughts — no account required.

Didn't find your answer?

Ask the community — no account required