POWER SUPPLY APPARATUS
First Claim
1. A power supply apparatus, comprising:
- an AC/DC rectifying unit converting an AC voltage into a DC voltage;
a power factor correction unit correcting a power factor of the DC voltage converted by the AC/DC rectifying unit;
a DC/DC conversion unit converting the DC voltage having the power factor corrected by the power factor correction unit into a DC voltage having a different magnitude therefrom;
an auxiliary winding connected to a primary side winding of a transformer of the DC/DC conversion unit and generating a DC voltage having a predetermined magnitude; and
an internal power generation unit connected to an output terminal of the power factor correction unit and the auxiliary winding and using a voltage of the output terminal of the power factor correction unit and a voltage generated by the auxiliary winding to generate temporary Vcc power and supply the generated temporary Vcc power as internal power of the power factor correction unit.
2 Assignments
0 Petitions
Accused Products
Abstract
Embodiments of the invention provide a power supply apparatus, including an AC/DC rectifying unit converting an AC voltage into a DC voltage, a power factor correction unit correcting a power factor of the DC voltage, and a DC/DC conversion unit converting the DC voltage having the corrected power factor into a DC voltage having a different magnitude therefrom. According to various embodiments, the power supply apparatus further includes an auxiliary winding connected to a primary side winding of a transformer of the DC/DC conversion unit and generating the DC voltage having a predetermined magnitude, and an internal power generation unit connected to an output terminal of the power factor correction unit and the auxiliary winding and using a voltage of the output terminal of the power factor correction unit and a voltage generated by the auxiliary winding to generate temporary Vcc power and supply the generated temporary Vcc power as internal power of the power factor correction unit.
7 Citations
9 Claims
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1. A power supply apparatus, comprising:
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an AC/DC rectifying unit converting an AC voltage into a DC voltage; a power factor correction unit correcting a power factor of the DC voltage converted by the AC/DC rectifying unit; a DC/DC conversion unit converting the DC voltage having the power factor corrected by the power factor correction unit into a DC voltage having a different magnitude therefrom; an auxiliary winding connected to a primary side winding of a transformer of the DC/DC conversion unit and generating a DC voltage having a predetermined magnitude; and an internal power generation unit connected to an output terminal of the power factor correction unit and the auxiliary winding and using a voltage of the output terminal of the power factor correction unit and a voltage generated by the auxiliary winding to generate temporary Vcc power and supply the generated temporary Vcc power as internal power of the power factor correction unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification