Fast-Response Variable Frequency DC-DC Converters Using Switching Cycle Event-Driven Digital Control

TL;DR

This paper introduces a cycle-by-cycle digital control method for variable-frequency DC-DC converters, offering fast response, ease of design, and verified performance through hardware and simulations, benefiting applications like voltage scaling and LiDAR.

Contribution

It presents a novel modeling and control approach for variable-frequency power converters using switching cycle event-driven digital control, improving dynamic response and implementation simplicity.

Findings

Verified through hardware and simulations

Achieved fast dynamic performance

Applicable to voltage scaling and LiDAR

Abstract

This paper investigates a new method to model and control variable-frequency power converters in a switching-synchronized sampled-state space for cycle-by-cycle digital control. There are a number of significant benefits in comparison to other methods including fast dynamic performance together with ease of design and implementation. Theoretical results are presented and verified through hardware, and simulations of a current-mode buck converter with constant on-time and a current-mode boost converter with constant off-time. Dynamic voltage scaling for microprocessors and LiDAR are among the applications that can benefit.