Buck-boost battery charger for dual battery application
AssigneeRenesas Electronics America Inc.
InventorsSungkeun Lim, Yang Li
Life of this patent
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Abstract
One or more embodiments are directed to a battery charger that can support multiple battery applications with a single USB type-C port. The architecture can be easily extended to support more applications such as those including two or more USB Type-C ports by adding additional voltage regulators. Additionally, the architecture can easily be extended to support additional batteries by adding corresponding battery chargers. Some embodiments enable supplying two or more system voltages and charging two or more batteries simultaneously using a single adapter and/or port. Other embodiments enable supplying voltage to On the Go devices from two or more batteries simultaneously.
Claims20
A device comprising:
- a voltage regulator coupled to a port configured to receive input power from an external source, wherein the voltage regulator is configured to convert an input voltage from the input power to a regulated voltage;
- a first battery charger configured to provide a first system voltage based on the regulated voltage, the first battery charger further configured to charge a first battery using the regulated voltage;
- and
- a second battery charger configured to provide a second system voltage based on the regulated voltage, the second battery charger further configured to charge a second battery that is separate from the first battery using the regulated voltage.
A device comprising:
- a first voltage regulator coupled to a first port configured to receive a first input power from a first external source, wherein the first voltage regulator is configured to convert a first input voltage from the first input power to a first regulated voltage;
- a second voltage regulator coupled to a second port configured to receive a second input power from a second external source, wherein the second voltage regulator is configured to convert a second input voltage from the second input power to a second regulated voltage;
- a first battery charger configured to provide a first system voltage based on the first regulated voltage, the first battery charger further configured to charge a first battery using first the regulated voltage;
- and
- a second battery charger configured to provide a second system voltage based on the second regulated voltage, the second battery charger further configured to charge a second battery that is separate from the first battery using the second regulated voltage.
A device comprising:
- a voltage regulator coupled to a port configured to receive an input power from an external source, wherein the voltage regulator is configured to convert an input voltage from the input power to a regulated voltage;
- a first battery charger configured to provide a first system voltage based on the regulated voltage, the first battery charger further configured to charge a first battery using the regulated voltage;
- a second battery charger configured to provide a second system voltage based on the regulated voltage, the second battery charger further configured to charge a second battery that is separate from the first battery using the regulated voltage;
- and
- a third battery charger configured to provide a third system voltage based on the regulated voltage, the third battery charger further configured to charge a third battery that is separate from the first battery and the second battery using the regulated voltage.
Dependencies are inferred from the claim text.