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.
27 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