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AN-1162
Application Note AN-1162
Compensator Design Procedure for Buck
Converter with Voltage-Mode Error-Amplifier
By: Amir M. Rahimi, Parviz Parto, and Peyman Asadi
Table of Contents
Page
1. Introduction to Synchronous Buck Converter ...................................2
2. Loop Gain of the System..................................................................5
3. Step by Step Compensator Design Procedure.................................6
4. Type II Compensator Design............................................................7
4.1 Design Example of Type II Compensator.......................................11
5. Type III Compensator.......................................................................13
5.1 Type III- A Compensator ................................................................14
5.2 Design Example of Type III-A Compensator ..................................16
5.3 Type III- B Compensator ................................................................19
5.4 Design Example of Type III-B Compensator ..................................20
6. Conclusion .......................................................................................23
Appendices:
Designing the Power Stage of the Synchronous Buck Converter ........24
Some Special Cases of Compensator Design .....................................28
Loop Response Measurement .............................................................33
