aborigini
Junior Member level 2
Hi all,
I am designing this class D amplifier-closed loop. I used the normal PWM, output stage, LPF, feedback circuit and second order integrator.
I found the the third order harmonic is very high. THe fundamental peak is around 40db adn the third harmonic is around 2dB.
Is there some ways to reduce this harmonics? Do I need to use higher order low pass filter in the feedback network?
Thank you so much.
I am designing this class D amplifier-closed loop. I used the normal PWM, output stage, LPF, feedback circuit and second order integrator.
I found the the third order harmonic is very high. THe fundamental peak is around 40db adn the third harmonic is around 2dB.
Is there some ways to reduce this harmonics? Do I need to use higher order low pass filter in the feedback network?
Thank you so much.
