Power factor correction (PFC) circuit that eliminates an inrush current limit circuit
First Claim
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1. A power converter with power factor correction circuit comprising:
- a buck/boost circuit for achieving a DC voltage from an AC input voltage signal line without developing an inrush current from the AC input voltage line; and
a DC/DC converter circuit coupled to the buck/boost circuit for converting the DC voltage to a desired voltage level.
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Abstract
Aspects for a power converter with power factor correction (PFC) circuit are described. The aspects include a buck/boost circuit for achieving a DC voltage from an AC input voltage signal line without developing an inrush current from the AC input voltage line, and a DC/DC converter circuit coupled to the buck/boost circuit for converting the DC voltage to a desired voltage level. The aspects are achieved in a straightforward, cost effective, and adaptable manner.
101 Citations
18 Claims
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1. A power converter with power factor correction circuit comprising:
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a buck/boost circuit for achieving a DC voltage from an AC input voltage signal line without developing an inrush current from the AC input voltage line; and
a DC/DC converter circuit coupled to the buck/boost circuit for converting the DC voltage to a desired voltage level. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method for achieving power factor correction in a power converter, the method comprising:
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providing a buck/boost circuit for achieving a DC voltage from an AC input voltage signal line without developing an inrush current from the AC input voltage line; and
coupling a DC/DC converter circuit to the buck/boost circuit for converting the DC voltage to a desired voltage level. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A buck/boost power factor correction circuit comprising:
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an inverted rectifier bridge coupled to an AC voltage signal line input;
a first transistor coupled to the inverted rectifier bridge;
an inductor coupled to the transistor;
a first diode coupled to the transistor and the inductor;
a first capacitor coupled to the transistor and the inverted rectifier bridge; and
a buck/boost controller coupled to the capacitor, wherein the circuit converts the AC voltage signal line input to a DC voltage at a desired voltage level, including a voltage level lower than a peak of the AC voltage signal line input without allowing an inrush current to develop. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification