Sensed current scaling in power converters
AssigneeRenesas Electronics America Inc.
InventorsYashovardhan Rao Potlapalli, John Stuart Kleine
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Abstract
Systems and methods for power converters are described. A digital to analog converter (DAC) can be configured to receive a digital representation of a maximum current value of a power conversion system. The DAC can be further configured to convert the digital representation of the maximum current value into an analog current signal. An analog to digital converter (ADC) can be configured to generate, based on the analog current signal, a digital signal representing a sensed current of the power conversion system as a function of the maximum current value.
Claims20
A semiconductor device comprising:
- a digital to analog converter (DAC) configured to:
- receive a digital representation of a maximum current value of a power conversion system;
- and
- convert the digital representation of the maximum current value into an analog current signal;
- and
- an analog to digital converter (ADC) configured to generate, based on the analog current signal, a digital signal representing a sensed current of an inductor connected to an output of a power stage in the power conversion system as a function of the maximum current value.
A system comprising:
- at least one power stage;
- a controller configured to control the power stage;
- and
- a circuit comprising:
- a digital to analog converter (DAC) configured to:
- receive a digital representation of a maximum current value of the system;
- and
- convert the digital representation of the maximum current value into an analog current signal;
- and
- an analog to digital converter (ADC) configured to generate, based on the analog current signal, a digital signal representing a sensed current of an inductor connected to an output of the power stage as a function of the maximum current value,
- wherein the controller is configured to report the digital signal to a host processor.
A method comprising:
- receiving a digital representation of a maximum current value of a power conversion system;
- converting the digital representation of the maximum current value into an analog current signal;
- and
- generating, based on the analog current signal, a digital signal representing a sensed current of an inductor connected to an output of a power stage in the power conversion system as a function of the maximum current value.
Dependencies are inferred from the claim text.