電子機器の低雑音電源 : 電圧共振形スイッチング電源による低雑音化対策
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概要
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A low noise switching dc-dc converter is presented, which operates with an ordinary bipolar transistor and diode. A new converter is based on the buck converter. By positively taking advantage of the switching transistor out put capactance and the transformer leakage inductance, it is posible to realzed little switching noise. When the "off" state transient response reaches zero voltage across the switch, before the beginning the "on "state, it dose so with approximately zero slope. By comparing the new converter noise level with the ordinary buck converter one, we showed its low noise characteristics of the new converter.
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