Collapsing adaptor battery charger
First Claim
1. A battery charger for regulating an input power, the input power being in one of a nominal state or a collapsed state, comprising:
- a regulator module configured to regulate the input power while in the collapsed state based upon a regulator control to provide a battery charging current;
a sensing module configured to provide a sensed voltage based upon the battery charging current;
a wall charger module configured to provide an indicator based upon the sensed voltage and to provide the regulator control based upon a current enable; and
a controller module configured to provide the current enable based upon the indicator,wherein the regulator module does not actively transition the input power from the collapsed state to the nominal state.
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Accused Products
Abstract
A method and apparatus is disclosed to charge a battery. A wall adapter may provide a power to a battery charger in a collapsed mode of operation. In the collapsed mode of operation, the wall adapter may provide the battery charger with a collapsed power. The battery charger may provide a charging current and/or voltage in a constant current charge mode of operation and/or a constant voltage charge mode of operation using the collapsed power. When operating in the constant current charge mode of operation, the battery charger provides the charging current and/or voltage having a constant current until the voltage of the battery is less than or substantially equal to a constant charge voltage. Alternatively, when operating in the constant voltage charge mode of operation, the battery provides the charging current and/or voltage having a constant voltage until the voltage of the battery is less than or substantially equal to a float voltage.
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Citations
52 Claims
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1. A battery charger for regulating an input power, the input power being in one of a nominal state or a collapsed state, comprising:
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a regulator module configured to regulate the input power while in the collapsed state based upon a regulator control to provide a battery charging current; a sensing module configured to provide a sensed voltage based upon the battery charging current; a wall charger module configured to provide an indicator based upon the sensed voltage and to provide the regulator control based upon a current enable; and a controller module configured to provide the current enable based upon the indicator, wherein the regulator module does not actively transition the input power from the collapsed state to the nominal state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A battery charger for regulating an input power, the input power being in one of a nominal state or a collapsed state, comprising:
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a regulator module configured to regulate the input power while in the collapsed state based upon a regulator control to provide a battery charging current; a sensing module configured to provide a sensed voltage based upon the battery charging current; a wall charger module configured to provide an indicator based upon the sensed voltage and to provide the regulator control based upon a current enable; a controller module configured to provide the current enable based upon the indicator; and a sensing resistor configured to provide a voltage differential based upon the battery charging current, wherein the sensing module is further configured to provide the sensed voltage based upon the voltage differential, and wherein the sensing module comprises; a first amplifier configured to amplify the voltage differential by a first gain to provide a first intermediate sensed voltage; a second amplifier configured to amplify the first intermediate sensed voltage by a second gain to provide a second intermediate sensed voltage; and a multiplexer configured to provide the first intermediate sensed voltage or the second intermediate sensed voltage as the sensed voltage.
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27. A system, comprising:
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a wall adapter configured to operate in a nominal mode of operation and a collapsed mode of operation and to provide an input power, the input power being in a collapsed state in the collapsed mode of operation and in a nominal state in the nominal mode of operation; and a battery charger configured to provide a battery charging current, the battery charger comprising; a regulator module configured to regulate the input power while in the collapsed state based upon a regulator control to provide the battery charging current; a sensing module configured to provide a sensed voltage based upon the battery charging current; a wall charger module configured to provide an indicator based upon the sensed voltage and to provide the regulator control based upon a current enable; and a controller module configured to provide the current enable based upon the indicator, wherein the regulator module does not actively transition the input power from the collapsed state to the nominal state. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51)
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52. A system, comprising:
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a wall adapter configured to operate in a nominal mode of operation and a collapsed mode of operation and to provide an input power, the input power being in a collapsed state in the collapsed mode of operation and in a nominal state in the nominal mode of operation; and a battery charger configured to provide a battery charging current, the battery charger comprising; a regulator module configured to regulate the input power while in the collapsed state based upon a regulator control to provide the battery charging current; a sensing module configured to provide a sensed voltage based upon the battery charging current; a wall charger module configured to provide an indicator based upon the sensed voltage and to provide the regulator control based upon a current enable; a controller module configured to provide the current enable based upon the indicator; and a sensing resistor configured to provide a voltage differential based upon the battery charging current, wherein the sensing module is further configured to provide the sensed voltage based upon the voltage differential, and wherein the sensing module comprises; a first amplifier configured to amplify the voltage differential by a first gain to provide a first intermediate sensed voltage; a second amplifier configured to amplify the first intermediate sensed voltage by a second gain to provide a second intermediate sensed voltage; and a multiplexer configured to provide the first intermediate sensed voltage or the second intermediate sensed voltage as the sensed voltage.
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Specification