Power supply that determines energy consumption and outputs a signal indicative of energy consumption
First Claim
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1. A power supply, comprising:
- a rectifier having an AC input and a DC output; and
a power factor correction (PFC) preregulator, coupled to the rectifier, that increases a power factor of the power supply, wherein the PFC preregulator includes a PFC controller that integrates an input power to determine energy consumption and outputs a signal indicative of the energy consumption, and wherein the PFC controller further determines a power state of the power supply and outputs the signal in response to determining the power supply is in a higher power state and refrains from outputting the signal in response to determining the power supply is in a lower power state having a power consumption intermediate the higher power state and an OFF state.
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Abstract
A power supply includes a rectifier having an AC input and a DC output and a power factor correction (PFC) preregulator, coupled to the rectifier, that increases a power factor of the power supply. The PFC preregulator includes a controller that integrates an input power to determine energy consumption and outputs a signal indicative of the energy consumption.
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Citations
27 Claims
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1. A power supply, comprising:
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a rectifier having an AC input and a DC output; and a power factor correction (PFC) preregulator, coupled to the rectifier, that increases a power factor of the power supply, wherein the PFC preregulator includes a PFC controller that integrates an input power to determine energy consumption and outputs a signal indicative of the energy consumption, and wherein the PFC controller further determines a power state of the power supply and outputs the signal in response to determining the power supply is in a higher power state and refrains from outputting the signal in response to determining the power supply is in a lower power state having a power consumption intermediate the higher power state and an OFF state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of operating a power supply, said method comprising:
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rectifying an AC input; applying, by a power factor correction (PFC) preregulator, power factor correction to increase a power factor of the power supply; determining, by a PFC controller of the PFC preregulator, energy consumption by integrating an input power; determining, by the PFC controller, a power state of the power supply; and outputting, by the PFC controller, a signal indicative of the energy consumption in response to determining the power supply is in a higher power state and refraining from outputting the signal in response to determining the power supply is in a lower power state having a power consumption intermediate the higher power state and an OFF state. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A circuit for controlling a power supply, the circuit comprising:
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a power factor correction (PFC) controller that controls current flow in a PFC preregulator to increase a power factor of the power supply, wherein the PFC controller integrates an input power to determine energy consumption and outputs a signal indicative of the energy consumption; and wherein the PFC controller further determines a power state of the power supply and outputs the signal in response to determining the power supply is in a higher power state and refrains from outputting the signal in response to determining the power supply is in a lower power state having a power consumption intermediate the higher power state and an OFF state. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27)
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Specification