Parallel powering of portable electrical devices
First Claim
1. 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 further configured to provide a battery supply current from said battery to said load via said common node when said controller operates said DC to DC converter in a second adapter supply mode;
wherein said battery supply current and an adapter supply current provided by said adapter are simultaneously provided in said second adapter supply mode, said adapter supply current and said battery supply current adding together at said common node to provide a load supply current to said load in said second adapter supply mode;
wherein said adapter supply current and said battery supply current are simultaneously provided in said second adapter supply mode in response to a single pulse width modulated signal and its complement provided by said controller to said DC to DC converter; and
wherein the output of said rechargeable battery is controlled by the DC to DC converter in said second adapter supply mode.
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0 Petitions
Accused Products
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.
35 Citations
20 Claims
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1. A portable electrical device comprising:
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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 further configured to provide a battery supply current from said battery to said load via said common node when said controller operates said DC to DC converter in a second adapter supply mode; wherein said battery supply current and an adapter supply current provided by said adapter are simultaneously provided in said second adapter supply mode, said adapter supply current and said battery supply current adding together at said common node to provide a load supply current to said load in said second adapter supply mode; wherein said adapter supply current and said battery supply current are simultaneously provided in said second adapter supply mode in response to a single pulse width modulated signal and its complement provided by said controller to said DC to DC converter; and wherein the output of said rechargeable battery is controlled by the DC to DC converter in said second adapter supply mode. - View Dependent Claims (2, 3, 4, 5, 6, 7, 19)
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8. A system comprising:
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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 from said battery to said load via said common node when said controller operates said DC to DC converter in a second adapter supply mode; wherein said adapter is configured to provide an adapter supply current in said second adapter supply mode, said adapter supply current and said battery supply current being simultaneously provided in said second adapter supply mode, said adapter supply current and said battery supply current adding together at said common node to provide a load supply current to said load in said second adapter supply mode; wherein said adapter supply current and said battery supply current are simultaneously provided in said second adapter supply mode in response to a single pulse width modulated signal and its complement provided by said controller to said DC to DC converter; and wherein the output of said rechargeable battery is controlled by the DC to DC converter in said second adapter supply mode. - View Dependent Claims (9, 10, 11, 12, 13, 20)
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14. A method comprising:
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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 from said battery to a load via a common node in said second adapter supply mode, said load coupled to said common node; simultaneously providing said battery supply current and an adapter supply current provided by said adapter in said second adapter supply mode, said adapter supply current and said battery supply current adding together at said common node to provide a load supply current to said load in said second adapter supply mode; wherein said adapter supply current and said battery supply current are simultaneously provided in said second adapter supply mode in response to a single pulse width modulated signal and its complement provided by a controller to said DC to DC converter; and wherein the output of said rechargeable battery is controlled by the DC to DC converter in said second adapter supply mode. - View Dependent Claims (15, 16, 17, 18)
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Specification