A Comparative Study of Analog Voltage-mode Control Methods for Ultra-Fast Tracking Power Supplies

Mikkel Christian Wendelboe Høyerby, Michael Andreas E. Andersen

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

This paper presents a theoretical and experimental comparison of the standard PWM/PID voltage-mode control method for single-phase buck converters with two highperformance self-oscillating (a.k.a. sliding mode) control methods. The application considered is ultra-fast tracking power supplies (UFTPSs) for RF power amplifiers, where the switching converter needs to track a varying reference voltage precisely and quickly while maintaining low output impedance. The small-signal analyses performed on the different controllers show that the hysteretic-type controller can achieve the highest loop gain, leading to superior output impedance performance in the UFTPS application; this is explained using a recently proposed small-signal model for the hysteretic comparator. The analytical findings are verified experimentally as well as by simulation. Experimentally, the use of hysteretic self-oscillating control is shown to reduce the worst-case UFTPS output impedance by a factor of 10.
Original languageEnglish
Title of host publicationIEEE 38th Annual Power Electronics Specialists Conference
PublisherIEEE
Publication date2007
Pages2970-2975
ISBN (Print)1-4244-0655-2
DOIs
Publication statusPublished - 2007
EventIEEE 38th Annual Power Electronics Specialists Conference - Orlando, FL, USA
Duration: 1 Jan 2007 → …
Conference number: 38

Conference

ConferenceIEEE 38th Annual Power Electronics Specialists Conference
Number38
CityOrlando, FL, USA
Period01/01/2007 → …

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