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    • 15. 发明授权
    • Self-oscillating DC-DC Converter with zero voltage switching
    • 具有零电压开关的自谐振DC-DC转换器
    • US5412555A
    • 1995-05-02
    • US136198
    • 1993-10-15
    • Hiroshi Uramoto
    • Hiroshi Uramoto
    • H02M3/338H02M3/335
    • H02M3/3385
    • The present invention is an ON/OFF type self-oscillating DC--DC converter with zero voltage switching and is provided with a transformer, a switching element on the primary side and a diode on the secondary side of the transformer, and configured so that the current (signal) flowing in the secondary side is detected by a resistor. The detected current is delayed by a comparator and provided with a short circuit which shorts the diode driven by the delayed signal. The present invention uses this arrangement to perform a switching operation at zero volts so that there is no switching loss, to improve the conversion efficiency and to have stable transmission operation even for non-load operation.
    • 本发明是一种具有零电压开关的ON / OFF型自振荡DC-DC转换器,并且在变压器的初级侧设置有变压器,开关元件和次级侧的二极管, 在二次侧流动的电流(信号)由电阻器检测。 检测到的电流被比较器延迟,并提供短路,使由延迟信号驱动的二极管短路。 本发明使用这种方式在零电压下执行开关操作,使得不存在开关损耗,即使对于非负载操作也能提高转换效率并具有稳定的传输操作。