Controlling power in a multi-port USB power delivery system
First Claim
Patent Images
1. A charger comprising:
- a bi-directional converter including a battery port;
a first bypass switch coupled to a first bus port and the battery port;
a second bypass switch coupled to a second bus port and the battery port;
a first contract voltage switch coupled between the first bus port and a contract voltage port of the converter;
a second contract voltage switch coupled between the second bus port and the contract voltage port of the converter;
a charge controller;
a first communication line to carry a first control signal from the charge controller to the first bus port, wherein the first control signal is to indicate a first real-time voltage level associated with power to be delivered from the first bus port through the first bypass switch to the battery port;
a second communication line to carry a second control signal from the charge controller to the second bus port, wherein the second control signal is to indicate a second real-time voltage level associated with power to be delivered from the second bus port through the second bypass switch to the battery port;
a plurality of current sensors to conduct independent current measurements with respect to the first bypass switch, the second bypass switch and the battery port; and
a voltage sensor to conduct one or more voltage measurements with respect to the battery port, wherein the charge controller is to generate the one or more control signals based on one or more of the independent current measurements or the one or more voltage measurements, and use the one or more control signals to manage the power to be delivered from the first bus port through the first bypass switch to the battery port, and the power to be delivered from the second bus port through the second bypass switch to the battery port,wherein the first communication line includes a first enablement switch and the second communication line includes a second enablement switch.
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Abstract
Systems and methods may provide for a charger that includes a converter with a battery port, a first bypass switch coupled to a first bus port and the battery port, and a second bypass switch coupled to a second bus port and the battery port. Additionally, a charge controller may use one or more control signals to manage power to be delivered from the first bus port through the first bypass switch to the battery port, and power to be delivered from the second bus port through the second bypass switch to the battery port.
50 Citations
24 Claims
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1. A charger comprising:
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a bi-directional converter including a battery port; a first bypass switch coupled to a first bus port and the battery port; a second bypass switch coupled to a second bus port and the battery port; a first contract voltage switch coupled between the first bus port and a contract voltage port of the converter; a second contract voltage switch coupled between the second bus port and the contract voltage port of the converter; a charge controller; a first communication line to carry a first control signal from the charge controller to the first bus port, wherein the first control signal is to indicate a first real-time voltage level associated with power to be delivered from the first bus port through the first bypass switch to the battery port; a second communication line to carry a second control signal from the charge controller to the second bus port, wherein the second control signal is to indicate a second real-time voltage level associated with power to be delivered from the second bus port through the second bypass switch to the battery port; a plurality of current sensors to conduct independent current measurements with respect to the first bypass switch, the second bypass switch and the battery port; and a voltage sensor to conduct one or more voltage measurements with respect to the battery port, wherein the charge controller is to generate the one or more control signals based on one or more of the independent current measurements or the one or more voltage measurements, and use the one or more control signals to manage the power to be delivered from the first bus port through the first bypass switch to the battery port, and the power to be delivered from the second bus port through the second bypass switch to the battery port, wherein the first communication line includes a first enablement switch and the second communication line includes a second enablement switch. - View Dependent Claims (2, 3, 4)
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5. A system comprising:
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a load including one or more of a processor, a chipset or a memory device; a first bus port; a second bus port; and a charger comprising; a bi-directional converter including a battery port coupled to the load, a first bypass switch coupled to a first bus port and the battery port, a second bypass switch coupled to a second bus port and the battery port, a first contract voltage switch coupled between the first bus port and a contract voltage port of the converter; a second contract voltage switch coupled between the second bus port and the contract voltage port of the converter; a first communication line; a second communication line, and a charge controller to use one or more control signals to manage power to be delivered from the first bus port through the first bypass switch to the battery port, and power to be delivered from the second bus port through the second bypass switch to the battery port, wherein the first communication line includes a first enablement switch and the second communication line includes a second enablement switch. - View Dependent Claims (6, 7, 8, 9, 10, 11)
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12. A method of operating a charger, comprising:
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using one or more control signals to manage power to be delivered from a first bus port through a first bypass switch to a battery port of a bi-directional converter, and power to be delivered from a second bus port through a second bypass switch to the battery port, sending, via a first communication line, a first control signal from a charge controller to the first bus port, sending, via a second communication line, a second control signal from the charge controller to the second bus port, and controlling a first enablement switch of the first communication line and a second enablement switch of the second communication line based on one or more mode signals; wherein a first contract voltage switch is coupled between the first bus port and a contract voltage port of the converter, and wherein a second contract voltage switch is coupled between the second bus port and the contract voltage port of the converter. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A charger comprising:
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a bi-directional converter including a battery port; a first bypass switch coupled to a first bus port and the battery port; a second bypass switch coupled to a second bus port and the battery port; a charge controller to use one or more control signals to manage power to be delivered from the first bus port through the first bypass switch to the battery port, and power to be delivered from the second bus port through the second bypass switch to the battery port; a first communication line to carry a first control signal from the charge controller to the first bus port; a second communication line to carry a second control signal from the charge controller to the second bus port; a first contract voltage switch coupled between the first bus port and a contract voltage port of the converter; and a second contract voltage switch coupled between the second bus port and the contract voltage port of the converter, wherein the first communication line includes a first enablement switch and the second communication line includes a second enablement switch. - View Dependent Claims (19, 20, 21, 22, 23, 24)
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Specification