Proceedings ArticleDOI
Hardware implementation of a quasi-resonant bidirectional flyback converter for capacitive loads
Subhransu Satpathy,Siva Prasad Kunchala,N. Lakshminarasamma +2 more
- pp 1-6
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TLDR
In this article, a hardware implementation of a quasi-resonant bi-directional flyback converter (QR-BFC) is presented specifically for a low power high voltage capacitive load charging and discharging application.Abstract:
This paper presents hardware implementation of a quasi-resonant bi-directional flyback converter (QR-BFC). The design of power stage, control stage and feedback sensing stage is presented specifically for a low power high voltage capacitive load charging and discharging application. The design objective is to achieve faster charge and discharge process with high efficiency, small size and low cost. The converter operates in three modes — charge, discharge and burst mode. Power stage design presents guidelinies for selection of power stage elements of the converter. The control stage design presents implementation of a minimum voltage point (MVP) switching logic of primary and secondary MOSFETs by use of basic logic gates in a low cost CPLD. The isolated feedback sensing design stage presents a resistive capacitive divider circuit for implementation of burst mode voltage regulation. Experimental results are presented with a hardware prototype design.read more
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Proceedings ArticleDOI
Design and Implementation of Bipolar Bidirectional High Voltage Flyback Converter for Capacitive Loads
TL;DR: A modular circuit structure to generate bipolar high voltage pulses from a low voltage battery source using two bidirectional flyback converter modules connected in differential manner to achieve pulses of opposite polarities respectively is presented.
References
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Journal ArticleDOI
Design considerations and performance evaluations of synchronous rectification in flyback converters
TL;DR: In this article, design tradeoffs and performance comparisons of various implementations of the flyback converter with a synchronous rectifier (SR) are presented and theoretical results are verified on an experimental universal-input off-line 15 V/36 W flyback prototype.
Journal ArticleDOI
Light-Load Efficiency Optimization Method
Yungtaek Jang,Milan M. Jovanovic +1 more
TL;DR: In this paper, a method of maintaining high power-conversion efficiency across the entire load range and its circuit implementations are described, which substantially increases the conversion efficiency at light loads by minimizing switching and driving losses of semiconductor switches, as well as core losses of magnetic components.
Journal ArticleDOI
Adaptive off-time control for variable-frequency, soft-switched flyback converter at light loads
Y. Panov,Milan M. Jovanovic +1 more
TL;DR: In this paper, a control which regulates the output down to zero load and maintains soft switching at light loads was proposed for a flyback DC/DC converter with 380 V/19 V, 65 W output voltage regulation.
Journal ArticleDOI
Control algorithms and circuit designs for optimal flyback-charging of an energy-storage capacitor (e.g., for flash lamp or defibrillator)
N.O. Sokal,R. Redl +1 more
TL;DR: In this article, a flyback-type of a transformer-coupled DC/DC power converter supplies a train of current pulses to charge an energy-storage capacitor to a desired high voltage, converting input DC power obtained from a lower voltage DC source.
Journal ArticleDOI
Digital Control of a High-Voltage (2.5 kV) Bidirectional DC--DC Flyback Converter for Driving a Capacitive Incremental Actuator
TL;DR: In this paper, the authors presented a digital control technique to achieve valley switching in a bidirectional flyback converter used to drive a dielectric electroactive polymer-based capacitive incremental actuator.