Power supply integrated circuit with multiple independent outputs

• US 20050286191A1
• Filed: 06/24/2005
• Published: 12/29/2005
• Est. Priority Date: 06/28/2004
• Status: Abandoned Application

• Current Assignee: Avago Technologies General IP PTE Limited (Broadcom, Inc.)
• Original Assignee: Avago Technologies General IP PTE Limited (Broadcom, Inc.)
• Inventors: Ranganathan, Sumant, Vorenkamp, Pieter, Chen, Chun-ying, Kim, Neil Y.
• Application Number:
  US11/166,832
• Publication Number:
  US 20050286191A1
• Time in Patent Office: Days
• US Class Current: 361/90
• CPC Class Codes: H02J 1/08 Three-wire systems; Systems having more than three wires
• CPC Class Codes: H02M 1/008 Plural converter units for generating at two or more independent and non-parallel outputs, e.g. systems with plural point of load switching regulators
• CPC Class Codes: H02M 1/009 having two or more independently controlled outputs for DC-DC converter with intermediate AC H02M3/33561

Abstract

A system and method for providing, in an integrated power supply circuit, signals corresponding to multiple power supply outputs. Various aspects of the present invention may comprise an integrated circuit. The integrated circuit may comprise a first module that outputs a first signal corresponding to electrical power that is characterized by a first set of power characteristics. The first set of power characteristics may, for example, comprise a first voltage level. The integrated circuit may also comprise a second module that outputs a second signal corresponding to electrical power that is characterized by a second set of power characteristics. The second set of power characteristics may, for example, comprise a second voltage level. The second voltage level may, for example, be substantially similar to the first voltage level, and the first set of power characteristics may, for example, be substantially different than the second set of power characteristics.

Claims

1. An integrated circuit comprising:

a first module that outputs a first signal corresponding to electrical power that is characterized by a first set of power characteristics, where the first set of power characteristics comprises a first voltage level; and

a second module that outputs a second signal corresponding to electrical power that is characterized by a second set of power characteristics, where the second set of power characteristics comprises a second voltage level;

wherein the second voltage level is substantially similar to the first voltage level, and a portion of the first set of power characteristics is substantially different than a corresponding portion of the second set of power characteristics.

2. The integrated circuit of claim 1, wherein the first signal comprises the electrical power that is characterized by the first set of power characteristics, and the second signal comprises the electrical power that is characterized by the second set of power characteristics.

3. The integrated circuit of claim 1, wherein the first signal comprises a control signal that causes power supply circuitry to generate the electrical power that is characterized by the first set of power characteristics, and the second signal comprises a control signal that causes power supply circuitry to generate the electrical power that is characterized by the second set of power characteristics.

4. The integrated circuit of claim 1, wherein at least one of the first voltage level and the second voltage level is variable during operation of the integrated circuit.

5. The integrated circuit of claim 1, wherein at least one of the first set of power characteristics and the second set of power characteristics is variable during operation of the integrated circuit.

6. The integrated circuit of claim 1, wherein the first set of power characteristics comprises a first indication of voltage variability, and the second set of power characteristics comprises a second indication of voltage variability that is substantially different than the first indication of voltage variability.

7. The integrated circuit of claim 1, wherein the first set of power characteristics comprises a first load response, and the second set of power characteristics comprises a second load response that is substantially different than the first load response.

8. The integrated circuit of claim 1, further comprising a third module that outputs electrical power that is characterized by a third set of power characteristics, which includes a third voltage level that is substantially different than the first and second voltage levels.

9. The integrated circuit of claim 1, further comprising a third module that outputs electrical power that is characterized by a third set of power characteristics, which includes a third voltage level, wherein the third voltage level is substantially similar to the first and second voltage levels, and a portion of the third set of power characteristics is substantially different than corresponding respective portions of the first and second sets of power characteristics.

10. The integrated circuit of claim 1, further comprising a third module that does not perform power supply functionality, wherein the third module receives the electrical power that is characterized by the first set of power characteristics.

11. The integrated circuit of claim 1, further comprising a third module that does not perform power supply functionality, wherein the third module receives electrical power from the first module and the second module.

12. In an integrated circuit, a method for generating signals corresponding to electrical power, the method comprising:

generating a first signal corresponding to electrical power that is characterized by a first set of power characteristics, where the first set of power characteristics comprises a first voltage level; and

while generating the first signal, generating a second signal corresponding to electrical power that is characterized by a second set of power characteristics, where the second set of power characteristics comprises a second voltage level;

wherein the second voltage level is substantially similar to the first voltage level, and a portion of the first set of power characteristics is substantially different than a corresponding portion of the second set of power characteristics.

13. The method of claim 12, wherein the first signal comprises the electrical power that is characterized by the first set of power characteristics, and the second signal comprises the electrical power that is characterized by the second set of power characteristics.

14. The method of claim 12, wherein the first signal comprises a control signal that causes power supply circuitry to generate the electrical power that is characterized by the first set of power characteristics, and the second signal comprises a control signal that causes power supply circuitry to generate the electrical power that is characterized by the second set of power characteristics.

15. The method of claim 12, wherein at least one of the first voltage level and the second voltage level is variable during operation of the integrated circuit.

16. The method of claim 12, wherein at least one of the first set of power characteristics and the second set of power characteristics is variable during operation of the integrated circuit.

17. The method of claim 12, wherein the first set of power characteristics comprises a first indication of voltage variability, and the second set of power characteristics comprises a second indication of voltage variability that is substantially different than the first indication of voltage variability.

18. The method of claim 12, wherein the first set of power characteristics comprises a first load response, and the second set of power characteristics comprises a second load response that is substantially different than the first load response.

19. The method of claim 12, further comprising, while generating the first and second signals, generating a third signal corresponding to electrical power that is characterized by a third set of power characteristics, where the third set of power characteristics comprises a third voltage level that is substantially different than the first and second voltage levels.

20. The method of claim 12, further comprising, while generating the first and second signals, generating a third signal corresponding to electrical power that is characterized by a third set of power characteristics, where the third set of power characteristics comprises a third voltage level, and wherein the third voltage level is substantially similar to the first and second voltage levels, and a portion of the third set of power characteristics is substantially different than corresponding respective portions of the first and second sets of power characteristics.

21. The method of claim 12, further comprising providing the electrical power that is characterized by the first set of power characteristics to a first module of the integrated circuit, wherein the first module does not perform power supply functionality.

22. The method of claim 12, further comprising providing the electrical power that is characterized by the first set of power characteristics and the electrical power that is characterized by the second set of power characteristics to a first module of the integrated circuit, wherein the first module does not perform power supply functionality.

23. An electronic system comprising:

a signal processing circuit; and

a power supply circuit that provides electrical power to the signal processing circuit, wherein the power supply circuit comprises a power supply integrated circuit that comprises;

a first module that outputs a first signal corresponding to electrical power that is characterized by a first set of power characteristics, where the first set of power characteristics comprises a first voltage level; and

a second module that outputs a second signal corresponding to electrical power that is characterized by a second set of power characteristics, where the second set of power characteristics comprises a second voltage level;

wherein the second voltage level is substantially similar to the first voltage level and a portion of the first set of power characteristics is substantially different than a corresponding portion of the second set of power characteristics.

24. The electronic system of claim 23, wherein the first signal comprises the electrical power characterized by the first set of power characteristics, and the power supply circuit provides the first signal to the signal processing circuit.

25. The electronic system of claim 23, wherein the first signal comprises a control signal that causes the power supply circuit to provide the electrical power characterized by the first set of power characteristics to the signal processing circuit.

26. The electronic system of claim 23, wherein the power supply circuit further comprises power supply switching circuitry that receives the first signal from the first module and provides the electrical power characterized by the first set of power characteristics to the signal processing circuit.

27. The electronic system of claim 26, wherein the power supply switching circuitry further receives the second signal from the second module and provides the electrical power characterized by the second set of power characteristics to the signal processing circuit.