Error Amplifier Design

[captab]

Hi,

Can anyone plaese tell me how to design an Error Amplifier for voltage mode buck converter.The Error Amplifier is of compensation PI type. I am perticularly inetersted in the design of Amplifier than the compensation.

Thanks,
Captab

 

[yeechyan]

http://www.ecircuitcenter.com/Circuits/smps_buck_vm1/smps_buck_vm1.htm

 

[qutang]

a good chapter.

 

[captab]

Hi qutang,

Thanks for the good link.As per the link, the Error Amplifer is modeled as gm with Rout.But when we get to the actual system, do we need a closed loop form of the Error Amplifer which will produce output voltage linearly varying as per Vout-Vref?

Thanks,
captab