Hi,
I'm doing the final part for my project using IR2110A for a power inverter. I've to add for my circuit a sawtooth wave generator and a reference such that I'll obtain a sinusoidal signal at the output.I don't know how to implement these for my circuit and I really appreciate your help

Thank you so much!

 

A IR2110 is not intended for processing sinusoidal signals.
Max.

 

As Max says. The most you can hope for is a modified sine wave out put, as shown in red in the image.

 

Hello,

An other way to create a digital sinewave is through SPWM.
It is a kind of sinus modulated PWM.
That way the IR2110 can be used.
On this page of the EDUCYPEDIA you will find pages with details on SPWM:
http://educypedia.karadimov.info/electronics/powercontrolspwm.htm

Bertus

 

You definitely can approximate a sine wave with PWM and a full bridge. Ever heard of a class D amplifier? That is how they work.. The PWM duty cycle is varied to match the amplitude of the sine wave at each cycle. An LC filter then smooths out the output, removing the sampling frequency. I have used this method to produce synthesized audio using a microcontroller.

The sawtooth the TS refers to is the old analog way of doing this, and is how original class D amplifiers as well as sine wave inverters worked.

Basically, you have a have a sine wave for reference and a sawtooth locked in at the same frequency. On each PWM cycle you turn on the the PWM output at the start of the cycle. When the sawtooth exceeds the sine, you turn off the PWM output. This matches the duty cycle of the PWM to the amplitude of the sine very cleverly.

Today, I would use a microcontroller to generate the PWM signal and use feedback to regulate the output voltage for varying loads.

Bob