Nien, Chin-FuChin-FuNienHsiao, Sheng-FuSheng-FuHsiaoKong, LeLeKongChen, Ching-JanChing-JanChenChan, Wei-HaoWei-HaoChanCHENG-WEI CHENDAN CHEN2020-06-292020-06-2920170885-8993https://scholars.lib.ntu.edu.tw/handle/123456789/506067https://www.scopus.com/inward/record.uri?eid=2-s2.0-85019418112&doi=10.1109%2fTPEL.2016.2633760&partnerID=40&md5=bfe2ba3a3639b4c47a401225d0023ca0There have been a variety of constant on-time (COT) controllers for dc power converter applications reported in recent years [1]-[5]. In this paper, a novel adaptive quasi-constant on-time current-mode control scheme is proposed and implemented in buck converters. While preserving the advantages of the conventional COT current-mode converters, this scheme allows fast transient response to step-load that is a critical requirement of a computer load with smart management. A small-signal model of the proposed circuit is also developed. Experimental results are also provided. This scheme is well suited for the next-generation dc converters for power management central-processor-unit devices. © 2016 IEEE.Buck converter; constant on-time current-mode (COTCM); describing function (DF); voltage regulators (VRs)[SDGs]SDG7Heterojunction bipolar transistors; Power converters; Voltage regulators; Buck converters; Central processor units; Current mode; Current Mode Control; Current-mode converters; DC power converter; Fast transient response; Voltage regulators (VRs); DC-DC convertersjournal article10.1109/TPEL.2016.26337602-s2.0-85019418112WOS:000401320000061