BATTERY CHARGER
First Claim
1. A battery charger, comprising:
- an input supply terminal configured to receive a supply signal,a battery terminal configured to be connected to a battery,a supply switching circuit arranged in an electrical path between the battery terminal and the input supply terminal,a control device configured to generate a control signal to control operation of the supply switching circuit,a fuel gauge device configured to provide a digital estimation of a voltage signal across the battery,a correction device configured to modify said control signal generated by the control device if said digital estimation of the voltage signal across the battery is out of a value range between a first threshold and a second threshold, wherein the first threshold is lower than the second threshold.
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Accused Products
Abstract
A battery charger includes an input supply terminal configured to receive a supply signal and a battery terminal configured to be connected to a battery. A supply switching circuit is arranged between the battery terminal and the input supply terminal. A control device generates a control signal to control operation of the supply switching circuit. A fuel gauge device provide a digital estimation of a voltage signal across the battery. A correction device modifies the control signal in response to the digital estimation of the voltage signal across the battery if that digital estimation is outside of a value range between two thresholds.
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Citations
11 Claims
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1. A battery charger, comprising:
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an input supply terminal configured to receive a supply signal, a battery terminal configured to be connected to a battery, a supply switching circuit arranged in an electrical path between the battery terminal and the input supply terminal, a control device configured to generate a control signal to control operation of the supply switching circuit, a fuel gauge device configured to provide a digital estimation of a voltage signal across the battery, a correction device configured to modify said control signal generated by the control device if said digital estimation of the voltage signal across the battery is out of a value range between a first threshold and a second threshold, wherein the first threshold is lower than the second threshold. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of operating a battery charger, wherein the battery charger includes an input supply terminal configured to receive a supply signal, a battery terminal configured to be connected to a battery, and a supply switching circuit arranged in an electrical path between the battery terminal and the input supply terminal, the method comprising:
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controlling said supply switching circuit, generating a digital estimation of a voltage signal across the battery, modifying the controlling of the supply switching circuit if said digital estimation of the voltage signal across the battery which is outside of a value range between a first threshold and a second threshold, wherein the first threshold is lower than the second threshold. - View Dependent Claims (8, 9, 10)
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11. An integrated circuit, comprising:
circuitry formed in one chip of semiconductor material including; an input supply terminal configured to receive a supply signal, a battery terminal configured to be connected to a battery, a supply switching circuit arranged in an electrical path between the battery terminal and the input supply terminal, a control device configured to generate a control signal to control operation of the supply switching circuit, a fuel gauge device configured to provide a digital estimation of a voltage signal across the battery, and a correction device configured to modify said control signal generated by the control device if said digital estimation of the voltage signal across the battery is out of a value range between a first threshold and a second threshold, wherein the first threshold is lower than the second threshold.
Specification