printed plate of switch power supply design technique circuit

Published:2011/6/11 22:01:00 Author:chopper | Keyword: printed plate, switch power supply | From:SeekIC

Switch power supply uses high speed switch to control high voltage and great current.If the speed of switch is not fast,the comsuption of transistor will increase and the temperature will ascend.When current changing rate di/dt is comparatively big,it will cause biggish noise voltage.When the inductance of line of printed plate is different,the switch waveform is different.The inductance of line is large,the surge of voltage waveform is large and the step gapof current waveform is large too.Therefor,the lines of switch current should be short and thick to decrease the inductance.



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