Study and Implementation of an Electrolytic Capacitor-Less Power LED driver with Active Power Factor Correction Feature
碩士 === 國立臺灣科技大學 === 電子工程系 === 99 === The single-stage driver circuit is commonly used for low-power LED lighting applications. However, the use of electrolytic capacitors in the single-stage LED driver will seriously shorten the lifetime. This thesis aims to design and implement an electrolytic capa...
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| Format: | Others |
| Language: | zh-TW |
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2011
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| Online Access: | http://ndltd.ncl.edu.tw/handle/mp787f |
| Summary: | 碩士 === 國立臺灣科技大學 === 電子工程系 === 99 === The single-stage driver circuit is commonly used for low-power LED lighting applications. However, the use of electrolytic capacitors in the single-stage LED driver will seriously shorten the lifetime.
This thesis aims to design and implement an electrolytic capacitor-less LED driver with active power factor correction (PFC). A two-stage LED driver which consists of a buck PFC converter and an isolated inverse-SEPIC converter is studied. The operating principles and design considerations of the two-stage circuits are analyzed and discussed.
A 48W laboratory prototype is built and tested to verify the feasibility and theoretical analysis of the proposed scheme.
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