Intelligent voltage regulator

• US 8,089,306 B1
• Filed: 10/04/2007
• Issued: 01/03/2012
• Est. Priority Date: 03/12/2007
• Status: Active Grant

• Current Assignee: Tamiras Per Pte Ltd LLC (Intellectual Ventures LLC)
• Original Assignee: Cypress Semiconductor Corporation (Infineon Technologies AG)
• Inventors: Wright, David G.
• Primary Examiner(s): Donovan, Lincoln
• Assistant Examiner(s): Hernandez, William
• Application Number:
  US11/973,090
• Time in Patent Office: 1,552 Days
• Field of Search: 327/142, 327/143, 327/198
• US Class Current: 327/143
• CPC Class Codes: G05F 1/10 Regulating voltage or current G05F1/02 takes precedence; for electric railways B60M3/02
• CPC Class Codes: G05F 1/46 wherein the variable actually regulated by the final control device is dc G05F1/625 takes precedence
• CPC Class Codes: G06F 1/24 Resetting means
• CPC Class Codes: G06F 13/24 using interrupt G06F13/32 takes precedence
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/0002 Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
• CPC Class Codes: H02M 1/08 Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
• CPC Class Codes: H03L 5/02 of power
• CPC Class Codes: Y02D 10/00 Energy efficient computing, e.g. low power processors, power management or thermal management

Abstract

An intelligent voltage regulator circuit in accordance with one embodiment of the invention can include a variable voltage generator that is coupled to receive an input voltage. Additionally, the intelligent voltage regulator circuit can include a processing element that is coupled to the variable voltage generator. The processing element can be coupled to receive programming for controlling a characteristic of the intelligent voltage regulator circuit. The processing element can be for dynamically changing the characteristic during operation of the intelligent voltage regulator circuit.

Claims

1. An intelligent voltage regulator circuit comprising:

a variable voltage generator coupled to receive an input voltage; and

a first processing element coupled to said variable voltage generator, said first processing element coupled to receive programming instructions from a second processing element for controlling a characteristic of said intelligent voltage regulator circuit, said first processing element for dynamically changing said characteristic during operation of said intelligent voltage regulator circuit in response to said programming instructions, the first processing element adapted to execute the programming instructions from the second processing element to generate a selection signal to the variable voltage generator that selects an output voltage of the variable voltage generator from among multiple distinct possible output voltages of the variable voltage generator.

2. The intelligent voltage regulator circuit of claim 1, comprising plural selector circuits each having plural voltage level inputs.

3. The intelligent voltage regulator circuit of claim 1, further comprising:

a controller between an output voltage terminal and the output of a voltage comparator.

4. The intelligent voltage regulator circuit of claim 1, wherein said variable voltage generator comprises a follower circuit coupled to receive said input voltage.

5. The intelligent voltage regulator circuit of claim 1, said second processing element driving switches for one or more of IRQ, reset of the first processing element, and bus.

6. The intelligent voltage regulator circuit of claim 1, adapted to disable an output voltage of said intelligent voltage regulator circuit until detecting said input voltage at a threshold voltage.

7. The intelligent voltage regulator circuit of claim 1, wherein said first processing element is adapted to perform a watch-dog timer function and adapted to respond to said programming to set a count for said watch-dog timer function.

8. An intelligent voltage regulator circuit comprising:

a variable voltage generator coupled to receive a voltage supply;

a non-volatile memory coupled to receive programming associated with a characteristic of said intelligent voltage regulator circuit; and

a first processing element coupled to said variable voltage generator and to said non-volatile memory, said first processing element for receiving said programming from a second processing element and for dynamically changing said characteristic during run time of said intelligent voltage regulator circuit, the first processing element adapted to respond to a multi-bit value stored in the non-volatile memory, and coupled to provide a multi-bit control value as a selection signal to the variable voltage generator to select one of multiple distinct possible output voltages of the variable voltage generator.

9. The intelligent voltage regulator circuit of claim 8, wherein said variable voltage generator comprises a follower circuit coupled to receive said voltage supply.

10. The intelligent voltage regulator circuit of claim 9, wherein said first processing element is adapted to generate a reset signal that is output by said intelligent voltage regulator circuit to said second processing element.

11. The intelligent voltage regulator circuit of claim 8, wherein said programming sets an output voltage for said intelligent voltage regulator circuit.

12. The intelligent voltage regulator circuit of claim 8, wherein said programming sets a delay period implemented by said first processing element.

13. The intelligent voltage regulator circuit of claim 8, wherein said programming sets an output load condition range that said intelligent voltage regulator circuit will generate an output voltage.

14. The intelligent voltage regulator circuit of claim 8, wherein said first processing element changes the value of a previously programmed output voltage of said intelligent voltage regulator circuit.

15. The intelligent voltage regulator circuit of claim 8, wherein said programming sets an output voltage based on an operational state of a device coupled to said intelligent voltage regulator circuit.

16. A method comprising:

receiving an input voltage;

receiving a reference voltage;

receiving a multi-bit data from a first processing element; and

generating a regulated output voltage with a value dynamically set by a second processing element based on a multi-bit factor, the second processing element responding to the multi-bit data from the first processing element and providing the multi-bit factor as a selection signal to a variable voltage generator to select one of multiple distinct possible output voltages of the variable voltage generator.

17. The method of claim 16, wherein said factor comprises said data.

18. The method of claim 16, wherein said factor is a voltage selection control value generated based on said data.

19. The method of claim 16, wherein said regulated output voltage is output by an intelligent voltage regulator circuit.

20. The method of claim 19, wherein said generating occurs during run time of said intelligent voltage regulator circuit.