A single-stage dual-output tri-mode AC-DC regulator for inductively powered application

Autor: Qiong Wei Low, Liter Siek
Přispěvatelé: School of Electrical and Electronic Engineering, Library, VIRTUS, IC Design Centre of Excellence
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Popis: This paper presents a one-stage AC-DC voltage regulator with dual-output for inductively powered applications. In order to maximize the circuit performances, more than one independent regulated output voltage is often required to cater for different sub-modules in a system. The typical two-stage implementation which consists of a rectifier and a multiple-output DC-DC converter limits the overall power conversion efficiency of the receiver. A new architecture which is able to rectify and regulate two or more output voltages simultaneously in a single-stage is proposed and thereby improving the overall power conversion efficiency substantially. In addition, an energy-efficient control scheme is adopted to control the multiple switches in the architecture. Since no inductor is required in the proposed one-stage conversion structure, the cross-regulation problem that used to exist in a multiple-output switching converter has been eliminated. Apart from this, it is easier to be integrated with a system-on-chip (SoC) due to its minimized footprint. The tri-mode dual-output design was fabricated in standard 0.18μm CMOS process. It delivers a maximum output power of 114mW. The measured peak power conversion efficiency is 91.7% at dual regulated output voltages of 1.8V and 2V. Agency for Science, Technology and Research (A*STAR) Economic Development Board (EDB) This work was supported in part by the NTU-A∗STAR Silicon Technologies Centre of Excellence under Grant 11235100003, and in part by the EDB and Maxim Integrated.
Databáze: OpenAIRE