Digitally controlling the output voltage of a plurality of voltage sources

• US 6,624,535 B2
• Filed: 02/17/2001
• Issued: 09/23/2003
• Est. Priority Date: 02/17/2001
• Status: Active Grant

• Current Assignee: Marvell Asia Pte Limited (Marvell Technology Group Limited)
• Original Assignee: Intel Corporation
• Inventors: Morrow, Michael W.
• Primary Examiner(s): Toatley, Jr., Gregory J.
• Assistant Examiner(s): DeBeradinis, Robert L
• Application Number:
  US09/785,920
• Publication Number:
  US 20020113493A1
• Time in Patent Office: 948 Days
• Field of Search: 307/43, 307/48, 307/71, 307/85, 307/86, 307/80, 307/81, 320/117
• US Class Current: 307/71
• CPC Class Codes: H02J 7/0024 Parallel/serial switching of connection of batteries to charge or load circuit

Abstract

A plurality of the voltage sources may be selectively connectable in a variety of different arrangements using a switch array whose connections are determined by a programmable controller. For example, a desired output voltage may be automatically provided by altering the connections between the voltage sources to achieve the desired voltage. A programmable controller may determine how to connect the voltage sources to achieve the desired output voltage.

Claims

1. A method comprising:

providing a switch array;

providing a plurality of voltage sources connectable in a plurality of ways through said switch array;

programmably controlling the connections between said voltage sources to develop a desired output voltage;

receiving a user specified output voltage; and

automatically providing the user specified output voltage.

2. The method of claim 1 including determining the output voltage and using said determined output voltage to check the output voltages developed by said voltage sources.

3. The method of claim 1 including receiving information about the actual output voltage, determining whether the actual output voltage corresponds to a desired output voltage and automatically changing the connections between the voltage sources to cause the actual output voltage to be closer to the desired output voltage.

4. The method of claim 1 including automatically correcting the output voltage if an incorrect output voltage is produced.

5. The method of claim 1 including automatically balancing the load among the voltage sources.

6. The method of claim 1 including receiving information about the voltage supplied by each voltage source, determining the amount of time that each source has supplied that particular voltage, calculating a burden on each source, and in response to the calculated burden, balancing the usage of the voltage sources.

7. An article comprising a medium storing instructions that, if executed, enable a processor-based system to:

receive a request for an output voltage from a user; and

programmably control the connections between a plurality of voltage sources to develop the requested output voltage by adjusting the connections between a plurality of voltage sources.

8. The article of claim 7 further storing instructions that enable the processor-based system to determine the output voltage generated and use the generated output voltage to check the output voltages developed by each of the plurality of voltage sources.

9. The article of claim 7 further storing instructions enable the processor-based system to receive information about an actual output voltage, determine whether the actual output voltage corresponds to a desired output voltage, and automatically change the connections between voltage sources to cause the actual output voltage to be closer to the desired output voltage.

10. The article of claim 7 further storing instructions that enable a processor-based system to automatically correct the output voltage upon detection of an incorrect output voltage.

11. The article claim 7 further storing instructions that enable a processor-based system to automatically balance the load among the plurality of voltage sources.

12. The article of claim 7 further storing instructions that enable the processor-based system to receive information about the voltage supplied by each of the plurality of voltage sources, determine the amount of time that each voltage source has supplied a particular voltage, calculate a burden on each voltage source, and in response to the calculated burden, balance the usage of the voltage sources.

13. A voltage supply comprising:

a plurality of voltage sources;

a switch array to selectively connect the sources in a plurality of different ways to alter the voltage supplied by the supply;

a controller to programmably control the switch array; and

an input device to receive user specified output voltage levels, said controller to automatically provide the desired output voltage in response to a user input of a desired output voltage.

14. The supply of claim 13 including a storage, said controller coupled to said storage, said storage storing instructions that enable the controller to receive information about the voltage supplied by at least two different sources, determine the amount of time that each of the two sources is supplied as particular voltage, calculate a burden on each of the two sources, and in response to the calculated burden, balance the usage among the two voltage sources.

16. The article of claim 13 further storing instructions that, if executed, enable the processor-based system to automatically provide a user specified output voltage by adjusting the connections between a plurality of voltage sources.

15. An article comprising a medium storing instructions that, if executed, enable a processor-based system to:

receive a request for an output voltage;

programmably control the connections between at least two voltage sources to develop the requested output voltage;

receive information about the voltage supplied by each of the two voltage sources;

determine the amount of time that each voltage source has supplied a particular voltage;

calculate a burden on each voltage source; and

in response to the calculated burden, balance the usage of the two voltage sources.