{"title":"一种用于LED背光应用的新型快速开关电流脉冲驱动器","authors":"Yen-Chung Huang, Hung-Wei Chen","doi":"10.1109/ICCE-TW.2016.7520973","DOIUrl":null,"url":null,"abstract":"In this work, a novel fast-switching current-pulse driver for dimming controllers of light-emitting diode (LED) backlight applications is proposed. A pair of current switches, which is used to drive the LED string, employs an adaptive bias circuit for low-power dissipation. A negative feedback mechanism and a specific-design discharge current-sink transistor are used to drive the large-size current switches to achieve fast current switching. The proposed current-pulse driver was fabricated in TSMC 0.25-μm 1P4M BCD high-voltage process. The measured rising time and falling time of the LED current are 600 ns and 15 ns, respectively, when the load is a 10-LED string.","PeriodicalId":6620,"journal":{"name":"2016 IEEE International Conference on Consumer Electronics-Taiwan (ICCE-TW)","volume":"9 1","pages":"1-2"},"PeriodicalIF":0.0000,"publicationDate":"2016-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"A novel fast-switching current-pulse driver for LED backlight applications\",\"authors\":\"Yen-Chung Huang, Hung-Wei Chen\",\"doi\":\"10.1109/ICCE-TW.2016.7520973\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"In this work, a novel fast-switching current-pulse driver for dimming controllers of light-emitting diode (LED) backlight applications is proposed. A pair of current switches, which is used to drive the LED string, employs an adaptive bias circuit for low-power dissipation. A negative feedback mechanism and a specific-design discharge current-sink transistor are used to drive the large-size current switches to achieve fast current switching. The proposed current-pulse driver was fabricated in TSMC 0.25-μm 1P4M BCD high-voltage process. The measured rising time and falling time of the LED current are 600 ns and 15 ns, respectively, when the load is a 10-LED string.\",\"PeriodicalId\":6620,\"journal\":{\"name\":\"2016 IEEE International Conference on Consumer Electronics-Taiwan (ICCE-TW)\",\"volume\":\"9 1\",\"pages\":\"1-2\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2016-05-27\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2016 IEEE International Conference on Consumer Electronics-Taiwan (ICCE-TW)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/ICCE-TW.2016.7520973\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2016 IEEE International Conference on Consumer Electronics-Taiwan (ICCE-TW)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICCE-TW.2016.7520973","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
A novel fast-switching current-pulse driver for LED backlight applications
In this work, a novel fast-switching current-pulse driver for dimming controllers of light-emitting diode (LED) backlight applications is proposed. A pair of current switches, which is used to drive the LED string, employs an adaptive bias circuit for low-power dissipation. A negative feedback mechanism and a specific-design discharge current-sink transistor are used to drive the large-size current switches to achieve fast current switching. The proposed current-pulse driver was fabricated in TSMC 0.25-μm 1P4M BCD high-voltage process. The measured rising time and falling time of the LED current are 600 ns and 15 ns, respectively, when the load is a 10-LED string.
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