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US 8,796,882 B2Granted
System and method for supplying power on demand to a dynamic load
AssigneeQUALCOMM Incorporated
InventorsJorge A. Garcia, Ramkumar Sivakumar
Life of this patent
Estimating the term…
Abstract
An apparatus for supplying power to a load. The apparatus including a plurality of sources to provide charge, and a controller adapted to control a transfer of charge from the sources to the load at distinct times. The controller may control the transfer of charge based on variation of an ambient condition or a manufacturing process. The controller may control the transfer of charge to generate a defined voltage across the load. The apparatus may include a regulator adapted to regulate a voltage across the load. The regulator may regulate the voltage across the load in a defined timing relationship with the transfer of charge from the sources to the load.
Claims38
An apparatus for forming a predetermined current pulse through or a predetermined voltage pulse across a load, comprising:
- a battery coupled between a first node and ground;
- a regulator configured to regulate a continuous voltage across the load, wherein regulator comprises:
- a first switching device coupled between the first node and a second node;
- a first capacitive device coupled between the second node and ground;
- a second switching device coupled between the second node and a third node, wherein the continuous voltage is produced at the third node;
- a second capacitive device coupled between the third node and ground;
- a differential amplifier configured to generate a control signal based on a difference between the continuous voltage and a reference voltage;
- and
- a timing device configured to operate the first and second switching devices based on the control signal;
- and
- a charge-on-demand circuit configured to supply charge to the load simultaneously with the continuous voltage being applied across the load, the charge-on-demand circuit comprising:
- a plurality of sources to provide charge, wherein the charge sources respectively comprise capacitors or inductors;
- a plurality of switching elements adapted to couple the plurality of sources to the load, respectively;
- and
- a controller adapted to:
- simultaneously maintain open all of the switching elements and control the charge sources to energize the respective capacitors or inductors prior to the formation of the predetermined current pulse or the predetermined voltage pulse;
- and
- selectively close the switching elements to deliver the charge from the energized capacitors or inductors to the load during the formation of the predetermined current pulse or the predetermined voltage pulse.
15 more elements
A method for forming a predetermined current pulse through or a predetermined voltage pulse across a load, comprising:
- regulating a continuous voltage across the load by a voltage regulator, wherein the voltage regulator comprises:
- a battery coupled between a first node and ground;
- a first switching device coupled between the first node and a second node;
- a first capacitive device coupled between the second node and ground;
- a second switching device coupled between the second node and a third node, wherein the continuous voltage is produced at the third node;
- a second capacitive device coupled between the third node and ground;
- a differential amplifier configured to generate a control signal based on a difference between the continuous voltage and a reference voltage;
- and
- a timing device configured to operate the first and second switching devices based on the control signal;
- providing charge to the load as needed by a charge-on-demand circuit simultaneously with the continuous voltage being applied across the load, wherein providing charge to the load comprises:
- energizing capacitors or inductors at respective nodes while simultaneously isolating the nodes from the load prior to the formation of the predetermined current pulse or the predetermined voltage pulse;
- and
- selectively closing switching elements coupled respectively between the distinct nodes and the load to deliver the charge from the energized capacitors or inductors to the load during the formation of the predetermined current pulse or the predetermined voltage pulse.
10 more elements
An apparatus for forming a predetermined current pulse through or a predetermined voltage pulse across a load, comprising:
- a battery coupled between a first node and ground;
- means for regulating a continuous voltage across the load, wherein the means for regulating comprises:
- a switching device coupled between the first node and a second node;
- a diode including a cathode and an anode coupled between the second node and ground;
- a first inductive device coupled between the second anode and a third node;
- a first capacitive device coupled between the third node and ground;
- a second inductive device coupled between the third node and a fourth node, wherein the continuous voltage is produced at the fourth node;
- a second capacitive device coupled between the fourth node and ground;
- a differential amplifier configured to generate a control signal based on a difference between the continuous voltage and a reference voltage;
- and
- a gated oscillator configured to control the switching of the switching device based on the control signal;
- means for supplying charge-on-demand to the load simultaneously with the continuous voltage being applied across the load, the means for supplying comprising:
- a plurality of means for generating charge including respective means for energizing capacitors or inductors;
- a plurality of means for selectively coupling the charge generating means to the load;
- means for controlling the charge generating means and the coupling means to simultaneously energize the capacitors or inductors while isolating the capacitors or inductors from the load prior to the formation of the predetermined current pulse or the predetermined voltage pulse, and deliver charge from the energized capacitors or inductors to the load during the formation of the predetermined current pulse or the predetermined voltage pulse.
12 more elements
A computer program product for forming a predetermined current pulse through or a predetermined voltage pulse across a load, comprising a computer readable medium including instructions executable to:
- regulate a continuous voltage across the load by a voltage regulator, wherein the voltage regulator comprises:
- a battery coupled between a first node and ground;
- a switching device coupled between the first node and a second node;
- a diode including a cathode and an anode coupled between the second node and ground;
- a first inductive device coupled between the second anode and a third node;
- a first capacitive device coupled between the third node and ground;
- a second inductive device coupled between the third node and a fourth node, wherein the continuous voltage is produced at the fourth node;
- a second capacitive device coupled between the fourth node and ground;
- a differential amplifier configured to generate a control signal based on a difference between the continuous voltage and a reference voltage;
- and
- a gated oscillator configured to control the switching of the switching device based on the control signal;
- providing charge to the load as needed by a charge-on-demand circuit simultaneously with the continuous voltage being applied across the load by:
- energizing capacitors or inductors at respective nodes while simultaneously isolating the nodes from the load prior to the formation of the predetermined current pulse or the predetermined voltage pulse;
- and
- closing switching elements to deliver the charge from the energized capacitors or inductors to the load during the formation of the predetermined current pulse or the predetermined voltage pulse.
12 more elements
A headset, comprising:
- a transmitter adapted to transmit audio data;
- a plurality of sources to provide charge, wherein the charge sources respectively comprise capacitors or inductors;
- a plurality of switching elements adapted to couple the plurality of sources to the transmitter, respectively;
- and
- a controller adapted to:
- simultaneously maintain open all of the switching elements and control the charge sources to energize the respective capacitors or inductors prior to a formation of a predetermined current pulse or a predetermined voltage pulse for the transmitter;
- selectively close the switching elements to deliver the charge from the energized capacitors or inductors to the transmitter during the formation of the predetermined current pulse or the predetermined voltage pulse.
4 more elements
A watch, comprising:
- a receiver adapted to receive data;
- a user interface adapted to generate an indication based on the received data;
- a plurality of sources to provide charge, wherein the charge sources respectively comprise capacitors or inductors;
- a plurality of switching elements adapted to couple the plurality of sources to the receiver, respectively;
- and
- a controller adapted to:
- simultaneously maintain open all of the switching elements and control the charge sources to energize the respective capacitors or inductors prior to a formation of the predetermined current pulse or a predetermined voltage pulse for the receiver;
- selectively close the switching elements to deliver the charge from the energized capacitors or inductors to the receiver during the formation of the predetermined current pulse or the predetermined voltage pulse.
5 more elements
A sensing device, comprising:
- a sensor adapted to generate sensed data;
- a transmitter adapted to transmit the sensed data;
- a plurality of sources to provide charge, wherein the charge sources respectively comprise capacitors or inductors;
- a plurality of switching elements adapted to couple the plurality of sources to the transmitter, respectively;
- and
- a controller adapted to:
- simultaneously maintain open all of the switching elements and control the charge sources to energize the respective capacitors or inductors prior to a formation of a predetermined current pulse or a predetermined voltage pulse for the transmitter;
- selectively close the switching elements to deliver the charge from the energized capacitors or inductors to the transmitter during the formation of the predetermined current pulse or the predetermined voltage pulse.
5 more elements
Dependencies are inferred from the claim text.