Designing a Digital and Analog Solution for a Two Loop Buck Converter

In this webinar, we cover the design of a buck converter with an inner average current loop and an outer voltage loop. We present a method for closing the loop in the s-domain and in the z-domain and use SmartCtrl to design the controllers.

Topics covered:

- open loop frequency sweep

- proper setup of the AC sweep in PSIM

- inner current loop design with SmartCtrl

- inner current loop control to output frequency sweep (loop gain transfer function)

- outer voltage loop design with closed inner current loop

- loop gain transfer function of the outer voltage loop

- input impedance sweep

- output impedance sweep

- utilizing scripting to ensure proper operation across multiple operating scenarios