Power factor correction in a power converter
AssigneeInfineon Technologies Austria AG
InventorPierrick AUSSERESSE
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Abstract
An apparatus such as a resonant power converter as discussed herein may include: a first transformer winding; sense circuitry operative to sense first energy supplied from an input voltage to the first transformer winding; and switch circuitry operative to apply power factor correction associated with conversion of the input voltage into an output voltage derived from an output of a second transformer magnetically coupled to the first transformer winding, the applied power factor correction including control of a flow of the first energy from the input voltage to the first transformer winding.
Claims20
An apparatus comprising:
- a first transformer winding;
- sense circuitry operative to sense first energy supplied from an input voltage to the first transformer winding;
- and
- switch circuitry operative to apply power factor correction associated with conversion of the input voltage into an output voltage derived from an output of a second transformer magnetically coupled to the first transformer winding, the applied power factor correction operative to control a flow of the first energy from the input voltage to the first transformer winding.
An apparatus comprising:
- a controller operative to:
- via control of switch circuitry, control a flow of first energy received from an input voltage through a first transformer winding magnetically coupled to a second transformer winding, the controlled flow of the first energy through the first transformer winding to the second transformer winding operative to produce an output voltage based on second energy supplied from an output of the second transformer winding to a load;
- receive feedback indicative of a magnitude of the first energy;
- and
- adjust operation of the switch circuitry over time based on at least the feedback and a magnitude of the output voltage, the adjusted operation of the switch circuitry operative to adjust a magnitude of the first energy supplied to the first transformer winding.
A method comprising:
- via switch circuitry, controlling a flow of first energy received from an input voltage through a first transformer winding, the first transformer winding magnetically coupled to a second transformer winding, the controlled flow of the first energy through the first transformer winding to the second transformer winding producing an output voltage based on second energy supplied from an output of the second transformer winding to a load;
- receiving feedback indicative of a magnitude of the first energy;
- and
- applying power factor correction via control of the switch circuitry over time based on at least the received feedback and a magnitude of the output voltage, the control of the switch circuitry including adjustment of a magnitude of the first energy supplied to the first transformer winding.
Dependencies are inferred from the claim text.