Design and Implementation of a High-voltage Input Backlight Driver for Mutltiple CCFLs
碩士 === 國立臺灣科技大學 === 電子工程系 === 97 === This thesis is to design and implement a prototype of high-voltage input multi-CCFL backlight. Its configuration is a half bridge series-resonant parallel-loaded inverter. Its advantage is to eliminate a DC-DC converter. It reduces the power consumption, cost and...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2009
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| Online Access: | http://ndltd.ncl.edu.tw/handle/15956726183121512175 |
| Summary: | 碩士 === 國立臺灣科技大學 === 電子工程系 === 97 === This thesis is to design and implement a prototype of high-voltage input multi-CCFL backlight. Its configuration is a half bridge series-resonant parallel-loaded inverter. Its advantage is to eliminate a DC-DC converter. It reduces the power consumption, cost and circuit volume. In this thesis, a driving circuit for 20-tube LCD backlight with current balance based on Jin-Balance circuit and protection is implemented. By using the feedback of driving current for tube, the backlight driver realizes the control in multi-CCFL brightness. A burst mode is applied in dimming control. Finally, the simulation and experimental results are compared each other.
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