Power supply apparatus for supplying internal power from a minimum input voltage to a steady state of an output of a boost stage
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 connected to an output side of the power factor correction 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 to the power factor correction unit 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.
5 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 connected to an output side of the power factor correction 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 to the power factor correction unit 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