High power factor, high efficiency electronic ballast controller ML4831

Published:2011/7/13 23:14:00 Author:TaoXi | Keyword: High power factor, high efficiency, electronic ballast, controller | From:SeekIC

The ML4831 is designed as one kind of brightness adjustable high power factor, high efficiency electronic ballast controller. It is composed of the power factor controller, the oscillator, the preheat turn-off timing sequence, the control selective passing logic, the output driver and the over-voltage, over-temperature protection devices. The restarting and the lamp re-exporting are controlled by the external timing sequence, and considering the comprehensive control of the different tube characteristics, the ballast control device can adjust the lamp power through the frequency modulation (FM), it adjusts the lamp power and the operating frequency of the voltage-controlled oscillator (VCO) by compensating the programming. These functions are integrated on one chip, so this chip can be used in different occasions.



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