Parallel powering of portable electrical devices
AssigneeO2Micro International Limited
InventorAlexandru Hartular
Life of this patent
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Abstract
A portable electrical device may include a DC to DC converter coupled to a common node, a load coupled to the common node, and a controller configured to control the DC to DC converter. The DC to DC converter may be configured to provide a charging current to a rechargeable battery from an adapter when the controller operates said DC to DC converter in a first adapter supply mode. The DC to DC converter may be configured to provide a battery supply current to the load via the common node when the controller operates the DC to DC converter in a second adapter supply mode. The adapter supply current and the battery supply current may add together at the common node to simultaneously provide a load supply current to the load in the second adapter supply mode.
Claims18
A portable electrical device comprising:
- a DC to DC converter coupled to a common node;
- a load coupled to said common node;
- and
- a controller configured to control said DC to DC converter, said DC to DC converter configured to provide a charging current to a rechargeable battery from an adapter when said controller operates said DC to DC converter in a first adapter supply mode, said DC to DC converter configured to provide a battery supply current to said load via said common node when said controller operates said DC to DC converter in a second adapter supply mode.
A system comprising:
- an adapter;
- and
- a portable electrical device comprising:
- a DC to DC converter coupled to a common node;
- a load coupled to said common node;
- and
- a controller configured to control said DC to DC converter, said DC to DC converter configured to provide a charging current to a rechargeable battery from said adapter when said controller operates said DC to DC converter in a first adapter supply mode, said DC to DC converter configured to provide a battery supply current to said load via said common node when said controller operates said DC to DC converter in a second adapter supply mode.
A method comprising:
- operating a DC to DC converter in a first adapter supply mode, said DC to DC converter configured to provide a charging current to a rechargeable battery from an adapter in said first adapter supply mode;
- and
- operating said DC to DC converter in a second adapter supply mode, said DC to DC converter configured to provide a battery supply current to a load via a common node in said second adapter supply mode, said load coupled to said common node.
Dependencies are inferred from the claim text.