Simulate analysis of buck converter’s near-end and far-end feedback and its application

Abstract

The voltage detection used in buck converters has two modes: near-end and far-end feedback. With the improving requirement of compensation accuracy, the selection of compensation method can’t meet the requirements which is traditionally chosen based on the experience. In consideration of the actual path impedance and chip voltage tolerance in the article, the near-end and far-end feedback of the buck converter is simulated with SIMetrix/SIMPLIS tool, the accuracy of the simulation results is verified with the static and dynamic response data, it provides a feasible and quantitative description method for the feedback mode selection.

Keywords

• buck converter
• simulate
• near-end feedback
• far-end feedback