Energy tracking circuit
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United States of America Patent
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Jan 9, 2018
Issued Date -
N/A
app pub date -
Oct 17, 2014
filing date -
Oct 17, 2014
priority date (Note) -
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Abstract
A circuit, system, and method for tracking energy use in a electronic circuit. A circuit includes a DC-DC converter and a comparator. The DC-DC converter is configured to maintain a desired output voltage by switching energy to an energy storage device based on an output voltage of the energy storage device. The DC-DC converter includes an output driver configured to source current to the energy storage device. The comparator is coupled to the DC-DC converter. The comparator is configured to identify a drive state of the output driver, and to generate a signal indicative of amount of energy transferred from the DC-DC converter to a load circuit. The signal corresponds to the identified drive state.
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