Highly accurate average current controller using charge sharing method for LED lamp driver
- Title
- Highly accurate average current controller using charge sharing method for LED lamp driver
- Author
- 권오경
- Issue Date
- 2018-04
- Publisher
- INST ENGINEERING TECHNOLOGY-IET
- Citation
- ELECTRONICS LETTERS, v. 54, no. 7, page. 439-440
- Abstract
- An average current controller (ACC) that can accurately regulate the light-emitting diode (LED) forward current for lighting applications is proposed. The proposed ACC employs a charge sharing method to achieve a highly accurate average LED forward current by compensating for an error occurred when the LED forward current is sampled. It was fabricated using a 0.35 mu m CMOS process technology and occupied a small chip area of 1028 mu m x 728 mu m. The measurement results showed that the proposed ACC achieved a deviation in the average LED forward current of < 0.6% over the entire input voltage range while achieving a maximum power efficiency of 93.6%. Therefore, the proposed ACC is suitable for high-quality LED lighting systems requiring an accurate LED forward current.
- URI
- https://digital-library.theiet.org/content/journals/10.1049/el.2017.4028https://repository.hanyang.ac.kr/handle/20.500.11754/118384
- ISSN
- 0013-5194; 1350-911X
- DOI
- 10.1049/el.2017.4028
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > ELECTRONIC ENGINEERING(융합전자공학부) > Articles
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