Dimmable MR16 LED drivers with low output ripple and wide duty ratio operating range

Po Yen Chen; Ching Tsai Pan; Yi Hua Liu

doi:10.1002/cta.2304

Dimmable MR16 LED drivers with low output ripple and wide duty ratio operating range

Po Yen Chen
, Ching Tsai Pan
, Yi Hua Liu^*

^*Corresponding author for this work

Research output: Contribution to journal › Journal Article › peer-review

2 Scopus citations

Abstract

In this paper, a novel single-switch DC-DC converter is proposed for dimmable MR16 light-emitting diode (LED) drivers. The proposed driver can achieve very low output voltage ripple without using MHz switching frequency; therefore, small non-electrolytic capacitors can be used to achieve longer lifetime and higher efficiency. Also, because of special merit of the proposed converter, it can be designed so that much wider duty ratio operating range can be achieved for LEDs. Hence, better digital dimming level resolution can be attained. Finally, a prototype driver for MR16 LED lamps is constructed to demonstrate the effectiveness of the converter. Experimental results show that a maximum efficiency of 92% can be achieved.

Original language	English
Pages (from-to)	2290-2306
Number of pages	17
Journal	International Journal of Circuit Theory and Applications
Volume	45
Issue number	12
DOIs	https://doi.org/10.1002/cta.2304
State	Published - 01 01 2017
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2017 John Wiley & Sons, Ltd.

Keywords

Electrolytic capacitor-less
High efficiency
LED driver
Long lifetime
Low output voltage ripple

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10.1002/cta.2304

Cite this

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title = "Dimmable MR16 LED drivers with low output ripple and wide duty ratio operating range",

abstract = "In this paper, a novel single-switch DC-DC converter is proposed for dimmable MR16 light-emitting diode (LED) drivers. The proposed driver can achieve very low output voltage ripple without using MHz switching frequency; therefore, small non-electrolytic capacitors can be used to achieve longer lifetime and higher efficiency. Also, because of special merit of the proposed converter, it can be designed so that much wider duty ratio operating range can be achieved for LEDs. Hence, better digital dimming level resolution can be attained. Finally, a prototype driver for MR16 LED lamps is constructed to demonstrate the effectiveness of the converter. Experimental results show that a maximum efficiency of 92\% can be achieved.",

keywords = "Electrolytic capacitor-less, High efficiency, LED driver, Long lifetime, Low output voltage ripple",

author = "Chen, \{Po Yen\} and Pan, \{Ching Tsai\} and Liu, \{Yi Hua\}",

note = "Publisher Copyright: {\textcopyright} 2017 John Wiley \& Sons, Ltd.",

year = "2017",

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doi = "10.1002/cta.2304",

language = "英语",

volume = "45",

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journal = "International Journal of Circuit Theory and Applications",

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T1 - Dimmable MR16 LED drivers with low output ripple and wide duty ratio operating range

AU - Chen, Po Yen

AU - Pan, Ching Tsai

AU - Liu, Yi Hua

PY - 2017/1/1

Y1 - 2017/1/1

N2 - In this paper, a novel single-switch DC-DC converter is proposed for dimmable MR16 light-emitting diode (LED) drivers. The proposed driver can achieve very low output voltage ripple without using MHz switching frequency; therefore, small non-electrolytic capacitors can be used to achieve longer lifetime and higher efficiency. Also, because of special merit of the proposed converter, it can be designed so that much wider duty ratio operating range can be achieved for LEDs. Hence, better digital dimming level resolution can be attained. Finally, a prototype driver for MR16 LED lamps is constructed to demonstrate the effectiveness of the converter. Experimental results show that a maximum efficiency of 92% can be achieved.

AB - In this paper, a novel single-switch DC-DC converter is proposed for dimmable MR16 light-emitting diode (LED) drivers. The proposed driver can achieve very low output voltage ripple without using MHz switching frequency; therefore, small non-electrolytic capacitors can be used to achieve longer lifetime and higher efficiency. Also, because of special merit of the proposed converter, it can be designed so that much wider duty ratio operating range can be achieved for LEDs. Hence, better digital dimming level resolution can be attained. Finally, a prototype driver for MR16 LED lamps is constructed to demonstrate the effectiveness of the converter. Experimental results show that a maximum efficiency of 92% can be achieved.

KW - Electrolytic capacitor-less

KW - High efficiency

KW - LED driver

KW - Long lifetime

KW - Low output voltage ripple

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DO - 10.1002/cta.2304

M3 - 文章

AN - SCOPUS:85006994105

SN - 0098-9886

VL - 45

SP - 2290

EP - 2306

JO - International Journal of Circuit Theory and Applications

JF - International Journal of Circuit Theory and Applications

IS - 12

ER -

Dimmable MR16 LED drivers with low output ripple and wide duty ratio operating range

Abstract

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Keywords

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