| 摘要 |
PURPOSE: A method for regulating a power supply mode transition with a low load is provided to reduce the distortion of an output voltage waveform in a power transformer when a power supply mode is changed into a low load condition or a no load condition. CONSTITUTION: A power stage includes a power transformer, a switch (111), and a controller IC (102). The power transformer includes a primary winding (106), a secondary winding (107), and an auxiliary winding (108). The controller IC controls an output by controlling the on and off of the switch. A collector of the switch is connected to the primary winding. A base of the switch is driven with a control signal (110). A second stage includes a diode which functions as an output rectifier and a capacitor which functions as an output filter. |
