Rectifying Circuit and Power Supply Circuit
AssigneeToshiba Lighting & Technology Corporation
InventorNoriyuki Kitamura
Life of this patent
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Abstract
According to one embodiment, a rectifying circuit includes a diode, a switching element, a capacitor and an auxiliary winding. The diode is connected between a first terminal and a second terminal while a direction directed from the second terminal to the first terminal is a forward direction. The switching element includes a first main electrode connected to the first terminal, a second main electrode connected to a cathode of the diode, and a gate electrode connected to an anode of the diode. The auxiliary winding is magnetically coupled to an inductor. The auxiliary winding is connected to the gate electrode through the capacitor, and is connected to the second main electrode of the switching element and the cathode of the diode.
Claims20
A rectifying circuit comprising:
- a diode connected between a first terminal and a second terminal while a direction directed from the second terminal to the first terminal is a forward direction;
- a switching element including a first main electrode connected to the first terminal, a second main electrode connected to a cathode of the diode, and a gate electrode connected to an anode of the diode;
- a capacitor connected to the gate electrode;
- and
- an auxiliary winding that is magnetically coupled to an inductor, is connected to the gate electrode through the capacitor, and is connected to the second main electrode of the switching element and the cathode of the diode.
A power supply circuit comprising:
- an inductor;
- and
- a rectifying circuit including a first terminal and a second terminal, wherein one of the first terminal and the second terminal is connected to the inductor, and wherein
- the rectifying circuit includes
- a diode connected between the first terminal and the second terminal while a direction directed from the second terminal to the first terminal is a forward direction,
- a switching element including a first main electrode connected to the first terminal, a second main electrode connected to a cathode of the diode, and a gate electrode connected to an anode of the diode,
- a capacitor connected to the gate electrode, and
- an auxiliary winding that is magnetically coupled to the inductor, is connected to the gate electrode through the capacitor, and is connected to the second main electrode of the switching element and the cathode of the diode.
Dependencies are inferred from the claim text.