Selection guides of the energy-saving lamps and electronic ballast transistor parameters

Published:2011/7/13 23:15:00 Author:TaoXi | Keyword: Selection guides, energy-saving lamps, electronic ballast, transistor, parameters | From:SeekIC

The power tolerance is a area which is surrounded by the curve (figure 1), when the voltage and current coordinate values of the transistor are over the range of the curve, the transistor will occur the power breakdown and it will be damaged. In practical applications, some switching power supply line loads are sensitivity, after the transistor is cut off, the self-inductance potential anti-peak voltage which is produced by the inductive load adds between the C pole and E pole of the transistor, so the transistor need to have enough SOA, BVceo and BVcbo values to bear the back voltage.



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