APPARATUS AND METHOD FOR A SWITCHING POWER CONVERTER
First Claim
1. A charging converter, comprising:
- a first terminal configured to receive an input voltage;
a plurality of switches configured to switchably operate to either step up the input voltage or step down the input voltage and generate a charging voltage on a second terminal to charge to a rechargeable storage unit; and
control logic configured to operate the plurality of switches in one of a step up mode and a step down mode based, at least in part, on a determination of a voltage level of the input voltage relative to the desired charging voltage.
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Accused Products
Abstract
A charging converter includes a plurality of switches configured to switchably operate to either step up an input voltage or step down the input voltage and generate a charging voltage on a second terminal to charge to a rechargeable storage unit, and control logic configured to operate the plurality of switches in one of a step up mode and a step down mode based on a determination of a voltage level of the input voltage relative to the desired charging voltage. A method includes determining a desired charging voltage to charge a rechargeable storage unit, switchably controlling a charging converter to step up the input voltage if an input voltage is lower than the desired charging voltage to generate a charging voltage, and switchably controlling the charging converter to step down the input voltage if the input voltage is higher than the desired charging voltage to generate the charging voltage.
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Citations
22 Claims
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1. A charging converter, comprising:
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a first terminal configured to receive an input voltage; a plurality of switches configured to switchably operate to either step up the input voltage or step down the input voltage and generate a charging voltage on a second terminal to charge to a rechargeable storage unit; and control logic configured to operate the plurality of switches in one of a step up mode and a step down mode based, at least in part, on a determination of a voltage level of the input voltage relative to the desired charging voltage. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An electronic device, comprising:
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a charging converter coupled in a current path from a first terminal to a second terminal providing power from a power source to a rechargeable storage unit; a system power converter coupled in a current path from the second terminal to a third terminal providing power to internal system components of the electronic device; and control logic configured to control the charging converter to switchably operate in a plurality of different modes in response to a determination of a voltage from the power source relative to a desired charging voltage for the rechargeable storage unit. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for charging a rechargeable storage unit of an electronic device, the method comprising:
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receiving an input voltage provided by a power source; determining a desired charging voltage to charge a rechargeable storage unit; switchably controlling a charging converter to step up the input voltage if the input voltage is lower than the desired charging voltage to generate a charging voltage; and switchably controlling the charging converter to step down the input voltage if the input voltage is higher than the desired charging voltage to generate the charging voltage. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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Specification