Control scheme for TRIAC dimming high PF single-stage LED driver with adaptive bleeder circuit and non-linear current reference

Ma, Weizhong; Xie, Xiaogao; Han, Yang; Deng, Hao

doi:10.1109/apec.2016.7467965

Cited by 7 publications

(4 citation statements)

References 14 publications

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“…These guidelines are useful while designing the LED lighting systems. 26,27 In addition, another method based on reactive power control can make the input current greater than the holding current. The test circuit for optical flicker measurement has been reported in literature.…”

Section: Introductionmentioning

confidence: 99%

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An overview of energy efficient solid state LED driver topologies

Yadlapalli

Narasipuram²,

Anuradha³

2019

Int J Energy Res

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LED lamps are projected as prospective successors of incandescent lamps with high efficiency and a long lifetime. Therefore, there is a need to develop energy efficient LED driver topologies for achieving constant current regulation, despite the effects of temperature on the LED V-I characteristics. This paper presents the salient features of various LED driver topologies with a focus on power density, multi-string operation, renewable energy utilization, soft switching, optical wireless communication, reliability and size. The performance of the above topologies is analysed in terms of the number of components, converter switching frequency, galvanic isolation, power rating and efficiency. This paper takes a look at efficiency improvement methods while dwelling on aspects of lifetime and reliability prediction of LED drivers. The paper will anticipate some of the future trends associated with the adaptation of wide bandgap power semiconductor materials, smart LED lighting for the internet of things (IoT) and programmable LED lamp drivers. This detailed technology review is extremely useful for researchers, designers and engineers in choosing the right topology.

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Section: Introductionmentioning

confidence: 99%

“…Hence, several methods such as phase angle detection and passive bleeder utilization are proposed. 26,27 In addition, another method based on reactive power control can make the input current greater than the holding current. 28 Also, a voltage source converter (VSC) based remote control dimming method is introduced.…”

Section: Introductionmentioning

confidence: 99%

An overview of energy efficient solid state LED driver topologies

Yadlapalli

Narasipuram²,

Anuradha³

2019

Int J Energy Res

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show abstract

“…At present, there are two dimming methods applying to adjust the luminance of LED. One is silicon controlled rectifier (also called TRIAC) dimming [5][6][7][8] and the other is pulse width modulation (PWM) dimming [9][10][11][12]. Compared with TRIAC dimming, PWM dimming has an advantage of no LED flickering and thus is preferred by the industry [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

PWM Dimming with Minimum Switching Cycle

Wang¹,

Wang²,

Yang³

et al. 2016

Proceedings of the 2nd International Conference on Electronics, Network and Computer Engineering (ICENCE 2016)

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Abstract. PWM dimming is widely used to adjust the luminance of lighting emitting diode (LED) due to the advantage of no LED shimming. When the dimming ratio is relatively small, the LED current maybe unable to increase from zero to a desired level and thus the LED may be undersupplied with electricity. This paper proposed a new PWM dimming technique having a minimum switching cycle. The LED driver utilizing this technique comprises a boost converter having a pulse width detect circuit. The pulse width detect circuit compares the pulse width of the PWM dimming signal with a preset time, if the pulse width of the dimming signal is greater than the preset time, the boost converter is controlled by the dimming signal; if the width of the dimming signal is smaller than the pre-set time, the booster converter keeps its on-time equaling to the pre-set time, so the boost converter could transfer enough energy to the output capacitor to supply the LED. The LED driver is fabricated in SMIC with 0.35 um Bi-CMOS technology, silicon tests show that the LED driver could adapt all range of pulse width of dimming signal, even for a micro-second level pulse width.

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“…W. Ma et. a1 [7] talks about using an adaptive bleeder circuitry for regulation of bleeder current in accordance with phase angle to reduce harmonics. The driver works around boundary conduction model in larger phase angle for accomplishing higher efficiency.…”

mentioning

confidence: 99%

Design of a mosfet based portable and compatible dimmer adaptor for led bulbs

2017

IJLTET

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Control scheme for TRIAC dimming high PF single-stage LED driver with adaptive bleeder circuit and non-linear current reference

Cited by 7 publications

References 14 publications

An overview of energy efficient solid state LED driver topologies

An overview of energy efficient solid state LED driver topologies

PWM Dimming with Minimum Switching Cycle

Design of a mosfet based portable and compatible dimmer adaptor for led bulbs

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