Low-current ripple LED driver by two-phase driving approach
A two-phase driving approach for light-emitting diode (LED) power supply is proposed. The approach uses two rectangular current sources working complementarily to supply a constant current to the LED string so that the output current can contain very low ripple even without the use of any electrolyt...
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| Veröffentlicht in: | Electronics letters 2015-10, Vol.51 (22), p.1804-1806 |
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| container_title | Electronics letters |
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| creator | Wong, Chi Shing Lai, Yuk Ming Loo, Ka Hong Tse, Chi K |
| description | A two-phase driving approach for light-emitting diode (LED) power supply is proposed. The approach uses two rectangular current sources working complementarily to supply a constant current to the LED string so that the output current can contain very low ripple even without the use of any electrolytic capacitor in the driver circuit. A dual asymmetrical half-bridge converter with power factor correction is used to realise the approach. A 60 W prototype is built and tested to validate the idea. |
| doi_str_mv | 10.1049/el.2015.1479 |
| format | Article |
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A 60 W prototype is built and tested to validate the idea.</description><subject>AC‐DC power convertors</subject><subject>Asymmetry</subject><subject>bridge circuits</subject><subject>Constants</subject><subject>Driver circuits</subject><subject>Electric converters</subject><subject>Electrolytic capacitors</subject><subject>half bridge converter</subject><subject>light emitting diode power supply</subject><subject>Light-emitting diodes</subject><subject>low current ripple LED driver</subject><subject>Photonics</subject><subject>power 60 W</subject><subject>power factor correction</subject><subject>Ripples</subject><subject>Strings</subject><subject>two phase LED driver</subject><issn>0013-5194</issn><issn>1350-911X</issn><issn>1350-911X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><recordid>eNp9kE1Lw0AQhhdRsGhv_oAcPHgwdWY3m2bxpDVVIeBFwduySSZ2JW3ibmLpvze1gh7U08Dw8H4xdoIwQYjUBdUTDignGE3VHhuhkBAqxOd9NgJAEUpU0SEbe29zwAijGCIcscusWYdF7xytusDZtq0pyNKboHT2nVyQb4Ju3YTtwnj6_NnVS2Da1jWmWByzg8rUnsZf94g9zdPH2V2YPdzez66ysBhseChEDmWlZCF4CVUFgiTxJJdDgGmcVIhKgDBckoyUMHmBSTF0iIGMUEoqKY7Y2U53sH3ryXd6aX1BdW1W1PReYwIJTGMBfEDPd2jhGu8dVbp1dmncRiPo7Uyaar2dSW9nGnC5w9e2ps2_rE6zjF_PQSDy70SWOv3a9G419P_L4vQXNM1-KLdlJT4A3HqAwQ</recordid><startdate>20151022</startdate><enddate>20151022</enddate><creator>Wong, Chi Shing</creator><creator>Lai, Yuk Ming</creator><creator>Loo, Ka Hong</creator><creator>Tse, Chi K</creator><general>The Institution of Engineering and Technology</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SP</scope><scope>8FD</scope><scope>F28</scope><scope>FR3</scope><scope>L7M</scope></search><sort><creationdate>20151022</creationdate><title>Low-current ripple LED driver by two-phase driving approach</title><author>Wong, Chi Shing ; Lai, Yuk Ming ; Loo, Ka Hong ; Tse, Chi K</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4142-33b0df95c32d0ff03e5e28b5604768f119303a25e5493abc18c14760ea3995953</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>AC‐DC power convertors</topic><topic>Asymmetry</topic><topic>bridge circuits</topic><topic>Constants</topic><topic>Driver circuits</topic><topic>Electric converters</topic><topic>Electrolytic capacitors</topic><topic>half bridge converter</topic><topic>light emitting diode power supply</topic><topic>Light-emitting diodes</topic><topic>low current ripple LED driver</topic><topic>Photonics</topic><topic>power 60 W</topic><topic>power factor correction</topic><topic>Ripples</topic><topic>Strings</topic><topic>two phase LED driver</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wong, Chi Shing</creatorcontrib><creatorcontrib>Lai, Yuk Ming</creatorcontrib><creatorcontrib>Loo, Ka Hong</creatorcontrib><creatorcontrib>Tse, Chi K</creatorcontrib><collection>CrossRef</collection><collection>Electronics & Communications Abstracts</collection><collection>Technology Research Database</collection><collection>ANTE: Abstracts in New Technology & Engineering</collection><collection>Engineering Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Electronics letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Wong, Chi Shing</au><au>Lai, Yuk Ming</au><au>Loo, Ka Hong</au><au>Tse, Chi K</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Low-current ripple LED driver by two-phase driving approach</atitle><jtitle>Electronics letters</jtitle><date>2015-10-22</date><risdate>2015</risdate><volume>51</volume><issue>22</issue><spage>1804</spage><epage>1806</epage><pages>1804-1806</pages><issn>0013-5194</issn><issn>1350-911X</issn><eissn>1350-911X</eissn><abstract>A two-phase driving approach for light-emitting diode (LED) power supply is proposed. 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| identifier | ISSN: 0013-5194 |
| ispartof | Electronics letters, 2015-10, Vol.51 (22), p.1804-1806 |
| issn | 0013-5194 1350-911X 1350-911X |
| language | eng |
| recordid | cdi_crossref_primary_10_1049_el_2015_1479 |
| source | Wiley Online Library Open Access |
| subjects | AC‐DC power convertors Asymmetry bridge circuits Constants Driver circuits Electric converters Electrolytic capacitors half bridge converter light emitting diode power supply Light-emitting diodes low current ripple LED driver Photonics power 60 W power factor correction Ripples Strings two phase LED driver |
| title | Low-current ripple LED driver by two-phase driving approach |
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