| 摘要 |
PURPOSE:To enhance the reliability and the efficiency and to reduce the cost of a multioutput flyback converter by stabilizing the output voltage of the side to which the converter is not fed back, by a saturable coil. CONSTITUTION:A multioutput flyback converter is divided to two sections, the section regarding the output 1 of the first section is stabilized at its output voltage by a pulse-width control, and the section regarding the output 2 of the second section is stabilized at the secondary side output voltage of a main transformer 12 by a saturable reactor 16. Thus, the section of the output 1 is composed of a switching transistor 2, a pulse width converter 4, and an error amplifier 5, etc., while the section of the output 2 is composed of a satura ble coil 16, a transistor 18, an error amplifier 20, etc. Thus, the converter corrects the variation in the load current of the output by the coil 16 and an output variation due to an input voltage, thereby stabilizing the output voltage.
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