A. Bhattacharya, B. Lehman, A. Shteynberg, H. Rodriguez
{"title":"Digital Sliding Mode Pulsed Current Averaging IC Drivers for High Brightness Light Emitting Diodes","authors":"A. Bhattacharya, B. Lehman, A. Shteynberg, H. Rodriguez","doi":"10.1109/COMPEL.2006.305665","DOIUrl":null,"url":null,"abstract":"This paper proposes a digital controller with sliding mode pulsed current averaging scheme for high-brightness (HB) light emitting diodes (LED) IC drivers. The digital controller implements a control method to adjust the 'on time' of the active switch based on the comparison of output current and a reference current. The idea is to increase or decrease the duty cycle by discrete pulses in order to control the average current being delivered to the load. A variable frequency boost converter in discontinuous conduction mode (DCM) has been used to handle the required load current. No external analog-to-digital (A/D) converter is required for the application","PeriodicalId":210889,"journal":{"name":"2006 IEEE Workshops on Computers in Power Electronics","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2006-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"7","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2006 IEEE Workshops on Computers in Power Electronics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/COMPEL.2006.305665","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 7
Abstract
This paper proposes a digital controller with sliding mode pulsed current averaging scheme for high-brightness (HB) light emitting diodes (LED) IC drivers. The digital controller implements a control method to adjust the 'on time' of the active switch based on the comparison of output current and a reference current. The idea is to increase or decrease the duty cycle by discrete pulses in order to control the average current being delivered to the load. A variable frequency boost converter in discontinuous conduction mode (DCM) has been used to handle the required load current. No external analog-to-digital (A/D) converter is required for the application