Start-up voltage overshoot reduction
AssigneeAdvanced Energy Industries, Inc.
InventorMark Corpuz
Life of this patent
Estimating the term…
Abstract
A power conversion system comprises a power converter configured to convert an input voltage to an output voltage. The power converter comprises an inductor, at least one power switch coupled to the inductor, a feedback circuit, and a controller. The power converter is configured to generate a sensed output voltage based on the output voltage, provide a feedback signal based on a relationship of the sensed output voltage with a reference voltage, and adjust the reference voltage from a first value to a second value after the sensed output voltage has exceeded the first value. The controller is coupled to the at least one power switch and to the feedback circuit and configured to control the at least one power switch to generate the output voltage based on the feedback signal.
Claims20
A power conversion system comprising:
- a power converter configured to convert an input voltage to an output voltage, the power converter comprising:
- an inductor;
- at least one power switch coupled to the inductor;
- a feedback circuit configured to:
- generate a sensed output voltage based on the output voltage;
- provide a feedback signal based on a relationship of the sensed output voltage with a reference voltage;
- and
- adjust the reference voltage from a first value to a second value after the sensed output voltage has exceeded the first value;
- and
- a controller coupled to the at least one power switch and to the feedback circuit and configured to control the at least one power switch to generate the output voltage based on the feedback signal.
A method of controlling output voltage overshoot in a power converter including an inductor, at least one power switch coupled to the inductor, a feedback circuit, and a controller coupled to the feedback circuit, the method comprising:
- controlling the power converter to produce an output voltage based on a feedback signal;
- generating a sensed output voltage based on the output voltage of the power converter;
- providing the feedback signal from the feedback circuit to the controller based on a comparison of the sensed output voltage with a reference voltage;
- and
- adjusting the reference voltage from a start-up voltage to a runtime voltage in response to a comparison of the sensed output voltage with a threshold voltage.
Dependencies are inferred from the claim text.