Study and Implementation of a Dimmable LED Driver for General Lighting Applications
碩士 === 中原大學 === 電機工程研究所 === 103 === This thesis aims to study the driving and dimming circuits by using the control for high-brightness LED lamps. Conventional LED driver consists of a power factor corrector and a DC/DC converter to achieve high power factor and good current regulation. Thi...
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| Other Authors: | |
| Format: | Others |
| Language: | zh-TW |
| Published: |
2015
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| Online Access: | http://ndltd.ncl.edu.tw/handle/2498j3 |
| Summary: | 碩士 === 中原大學 === 電機工程研究所 === 103 === This thesis aims to study the driving and dimming circuits by using the
control for high-brightness LED lamps. Conventional LED driver consists
of a power factor corrector and a DC/DC converter to achieve high power
factor and good current regulation. This thesis studies a single-stage flyback
PFC converter to reduce the component count and raise the conversion effi
ciency. A twin-bus dimming circuit is also developed to reduce the switch
stresses. The operation principles and design considerations of the studied
LED driver are analyzed and discussed. A laboratory prototype is designed
and tested to verify the feasibility. According the experimental verifications,
the overall conversion efficiency can be effectively improved. And dimmingg function is also fulfilled.
The operation principles and design considerations of the dimmable LED driver are analyzed and discussed. A laboratory prototype is also designed and tested to verify the feasibility.
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