SAR-Controlled Adaptive Off-Time Technique Without Sensing Resistor for Achieving High Efficiency and Accuracy LED Lighting System
| dc.citation.epage | 1394 | en_US |
| dc.citation.issue | 6 | en_US |
| dc.citation.spage | 1384 | en_US |
| dc.citation.volume | 57 | en_US |
| dc.citation.woscount | 11 | |
| dc.contributor.author | Liu, Chao-Hsuan | en_US |
| dc.contributor.author | Hsieh, Chun-Yu | en_US |
| dc.contributor.author | Hsieh, Yu-Chiao | en_US |
| dc.contributor.author | Tai, Ting-Jung | en_US |
| dc.contributor.author | Chen, Ke-Horng | en_US |
| dc.contributor.department | 電控工程研究所 | zh_TW |
| dc.contributor.department | Institute of Electrical and Control Engineering | en_US |
| dc.date.accessioned | 2014-12-08T15:06:44Z | |
| dc.date.available | 2014-12-08T15:06:44Z | |
| dc.date.issued | 2010-06-01 | en_US |
| dc.description.abstract | A successive approximation register (SAR) is utilized to control adaptive off-time in order to regulate accurate light-emitting diode (LED) current and improve efficiency of LED driver. The proposed SAR-controlled adaptive off-time technique without the external sensing resistor can sense the current flowing through LEDs during the turning on of the N-type power MOSFET, as well as provide adaptive off-time depending on the input voltage and the numbers of LED, to obtain an accurate LED current. Experimental results show the inductor current ripple is kept within +/- 15% of the DC current. As a result, line regulation is guaranteed in this proposed design. | en_US |
| dc.identifier.doi | 10.1109/TCSI.2009.2028643 | en_US |
| dc.identifier.issn | 1549-8328 | en_US |
| dc.identifier.journal | IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS | en_US |
| dc.identifier.uri | http://dx.doi.org/10.1109/TCSI.2009.2028643 | en_US |
| dc.identifier.uri | https://ir.lib.nycu.edu.tw/handle/11536/5297 | |
| dc.identifier.wosnumber | WOS:000281783800025 | |
| dc.language.iso | en_US | en_US |
| dc.subject | Adaptive off-time | en_US |
| dc.subject | hysteretic current control (HCC) | en_US |
| dc.subject | on-chip low-side current sensing | en_US |
| dc.subject | peak current control (PCC) | en_US |
| dc.subject | pulsewidth modulation (PWM) dimming | en_US |
| dc.subject | successive approximation register (SAR) | en_US |
| dc.title | SAR-Controlled Adaptive Off-Time Technique Without Sensing Resistor for Achieving High Efficiency and Accuracy LED Lighting System | en_US |
| dc.type | Article | en_US |