DS3984推挽式CCFL驱动电路

查了些资料
673411197199963.pdf

变压器的匝数比可能不对

查看美信的资料后,决定把输入电压降低试试

随着输入电压的降低,MOS管占空比增大,波型(LCM)有些改善
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5V输入电压时
LCM波形
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MOS管源极波形
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更改后,5V供电的灯管亮度比12V供电还高,变压器温度也降低了.

但是,低亮度时,闪烁的问题还是没有解决.

另外在输出电压上串一个30pF的高压电容后,灯管反而点不亮了.

请高手指点一下!