Journal ArticleDOI
Quasi-Active Power Factor Correction Circuit for HB LED Driver
Kening Zhou,Jian Guo Zhang,S. Yuvarajan,Da Feng Weng +3 more
- Vol. 23, Iss: 3, pp 1410-1415
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TLDR
In this paper, a quasi-active power factor corrector (PFC) was proposed for driving a string of high brightness light emitting diodes (HB LEDs) for general lighting applications.Abstract:
High brightness light emitting diodes (HB LEDs) are likely to be used for general lighting applications due to their high efficiency and longer life. The paper presents a quasi-active power factor corrector (PFC) for driving a string of HB LEDs. The single-stage PFC circuit has a high efficiency, and it does not increase the voltage/current stress on the active switch used in the switching converter due to PFC. The circuit has two operating modes based on the input voltage level and its features, like power factor correction and power balance, are explained. The experimental results obtained on a prototype converter along with waveforms are presented.read more
Citations
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Journal ArticleDOI
LED Driver With Self-Adaptive Drive Voltage
Yuequan Hu,Milan M. Jovanovic +1 more
TL;DR: In this article, the output voltage of the preregulator is always self-adjusted so that the voltage across the linear current regulator of the LED string with the highest voltage drop is kept at the minimum value that is required to maintain the desired string current.
Proceedings ArticleDOI
A Universal-Input Single-Stage High-Power-Factor Power Supply for HB-LEDs Based on Integrated Buck-Flyback Converter
TL;DR: In this paper, a streetlight LED application is covered, using the Integrated Buck-Flyback Converter developed in previous works, which performs power factor correction from a universal ac source, as well as a control loop using the LM3524 IC, which allows PWM dimming operation mode.
Journal ArticleDOI
A Survey, Classification, and Critical Review of Light-Emitting Diode Drivers
TL;DR: Based on a survey on over 1400 commercial LED drivers and a literature review, a range of LED driver topologies are classified according to their applications, power ratings, performance and their energy storage and regulatory requirements as discussed by the authors.
Journal ArticleDOI
A Novel Passive Offline LED Driver With Long Lifetime
TL;DR: In this article, the authors describe a patent-pending passive offline light-emitting diode (LED) driver that has no controlled semiconductor switches, electrolytic capacitors, auxiliary power supply, and control board.
Journal ArticleDOI
A Novel Single-Stage High-Power-Factor AC-to-DC LED Driving Circuit With Leakage Inductance Energy Recycling
Yan-Cun Li,Chern-Lin Chen +1 more
TL;DR: A novel single-stage ac-to-dc light-emitting-diode (LED) driver circuit integrated with a flyback converter that can provide not only high PF and low total harmonic distortion but also high conversion efficiency and low switching voltage spikes.
References
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Proceedings ArticleDOI
A new family of single-stage isolated power-factor correctors with fast regulation of the output voltage
R. Redl,L. Balogh,N.O. Sokal +2 more
TL;DR: In this article, a new family of single stage isolated power factor correctors is proposed, which features fast regulation of the output voltage, one or two power switches operated in unison, a single control loop, and automatic shaping of the line current.
Journal ArticleDOI
A topology survey of single-stage power factor corrector with a boost type input-current-shaper
Chongming Qiao,Keyue Smedley +1 more
TL;DR: In this article, a topological review of the single-stage power factor corrected (PFC) rectifiers is presented, and several new PFC converters were derived from some existing topologies using the translation rule.
Proceedings ArticleDOI
A topology survey of single-stage power factor corrector with a boost type input-current-shaper
Chongming Qiao,Keyue Smedley +1 more
TL;DR: In this paper, a topological review of single-stage power factor corrected (PFC) rectifiers is presented, and several new PFC converters were derived from some existing topologies using the translation rule.
Proceedings ArticleDOI
Reduction of voltage stress in integrated high-quality rectifier-regulators by variable-frequency control
TL;DR: In this paper, a variable-frequency control that reduces the voltage stress and makes the Integrated High-Quality Rectifier-Regulators (IHQRRs) suitable for universal input-range applications is described.
Journal ArticleDOI
A single-switch AC/DC converter with power factor correction
TL;DR: In this paper, a single-stage, single-switch power factor correction converter with output electrical isolation is proposed, which is derived by combining a boost circuit and a forward circuit in one power stage.