本論文研製一台高壓輸入之多組冷陰極管背光電源雛型電路，採用半橋串聯諧振並聯負載換流器形式轉換器架構。其優點為可省卻一級DC/DC轉換器，降低額外的功率損耗，節省電路成本與體積。本論文實作出驅動液晶顯示器內含20根燈管，利用Jin-Balance電路實現多燈管均流平衡及各項保護功能，並利用電流回授機制，完成冷陰極管輝度控制與穩定之功效。調光控制使用Burst mode調光，最後將模擬與量測結果相互印證。

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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