CHARGING CIRCUIT FOR BATTERY-POWERED DEVICE
First Claim
1. A charging circuit, comprising:
- a power node electrically connectable to a power supply unit;
a battery node electrically connectable to a battery;
a device node electrically connected to a device load;
a reversible buck-boost converter operatively intermediate the power node and the battery node;
a first switch operatively intermediate the power node and the device node;
a second switch operatively intermediate the battery node and the device node; and
logic operatively connected to the first switch, the second switch, and the reversible buck-boost converter, the logic configured to;
based on first conditions, turn on the first switch, turn off the second switch, and operate the reversible buck-boost converter in a forward buck mode;
based on second conditions, turn on the first switch, turn off the second switch, and operate the reversible buck-boost converter in a reverse boost mode;
based on third conditions, turn on the first switch, turn off the second switch, and operate the reversible buck-boost converter in a forward boost mode;
based on fourth conditions, turn on the first switch, turn off the second switch, and operate the reversible buck-boost converter in a reverse buck mode; and
based on fifth conditions, turn off the first switch, turn on the second switch, and turn off the reversible buck-boost converter.
1 Assignment
0 Petitions
Accused Products
Abstract
A charging circuit comprises a power node electrically connectable to a power supply unit, a battery node electrically connectable to a battery, a device node electrically connected to a device load, a reversible buck-boost converter operatively intermediate the power node and the battery node, a first switch operatively intermediate the power node and the device node, a second switch operatively intermediate the battery node and the device node; and logic operatively connected to the first switch, the second switch, and the reversible buck-boost converter. The logic is configured to operate the first switch, the second switch, and the reversible buck-boost converter based on a plurality of different conditions.
21 Citations
20 Claims
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1. A charging circuit, comprising:
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a power node electrically connectable to a power supply unit; a battery node electrically connectable to a battery; a device node electrically connected to a device load; a reversible buck-boost converter operatively intermediate the power node and the battery node; a first switch operatively intermediate the power node and the device node; a second switch operatively intermediate the battery node and the device node; and logic operatively connected to the first switch, the second switch, and the reversible buck-boost converter, the logic configured to; based on first conditions, turn on the first switch, turn off the second switch, and operate the reversible buck-boost converter in a forward buck mode; based on second conditions, turn on the first switch, turn off the second switch, and operate the reversible buck-boost converter in a reverse boost mode; based on third conditions, turn on the first switch, turn off the second switch, and operate the reversible buck-boost converter in a forward boost mode; based on fourth conditions, turn on the first switch, turn off the second switch, and operate the reversible buck-boost converter in a reverse buck mode; and based on fifth conditions, turn off the first switch, turn on the second switch, and turn off the reversible buck-boost converter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An electronic device, comprising:
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a power interface configured to receive power from a power supply unit; a battery; a reversible buck-boost converter operatively intermediate the power interface and the battery; a device load including one or more power consuming components; a first switch operatively intermediate the power interface and the device load; a second switch operatively intermediate the battery and the device load; and logic operatively connected to the first switch, the second switch, and the reversible buck-boost converter, the logic configured to; based on first conditions, turn on the first switch, turn off the second switch, and operate the reversible buck-boost converter in a forward buck mode; based on second conditions, turn on the first switch, turn off the second switch, and operate the reversible buck-boost converter in a reverse boost mode; based on third conditions, turn on the first switch, turn off the second switch, and operate the reversible buck-boost converter in a forward boost mode; based on fourth conditions, turn on the first switch, turn off the second switch, and operate the reversible buck-boost converter in a reverse buck mode; and based on fifth conditions, turn off the first switch, turn on the second switch, and turn off the reversible buck-boost converter. - View Dependent Claims (17, 18, 19)
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20. An electronic device, comprising:
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a power interface configured to receive power from a power supply unit; a battery; bidirectional step up/down circuitry operatively intermediate the power interface and the battery; a device load including one or more power consuming components; a first switch operatively intermediate the power interface and the device load; a second switch operatively intermediate the battery and the device load; and logic operatively connected to the first switch, the second switch, and the bidirectional step up/down circuitry, the logic configured to set the first switch, the second switch, and the bidirectional step up/down circuitry based on conditions of the power supply unit, the battery, and the device load.
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Specification