Voltage set point control scheme

• US 7,080,265 B2
• Filed: 03/14/2003
• Issued: 07/18/2006
• Est. Priority Date: 03/14/2003
• Status: Active Grant

• Current Assignee: Bel Power Solutions Inc.
• Original Assignee: Power-One Incorporated (ABB Limited)
• Inventors: Chapuis, Alain, Thaker, Mahesh Natverlal
• Primary Examiner(s): DU, THUAN N
• Application Number:
  US10/388,829
• Publication Number:
  US 20040179382A1
• Time in Patent Office: 1,222 Days
• Field of Search: 713/300, 713/310, 713/320, 713/321, 323/234, 323/241, 323/304, 363/15, 363/74
• US Class Current: 713/300
• CPC Class Codes: H02J 1/08 Three-wire systems; Systems having more than three wires
• CPC Class Codes: H02J 1/082 Plural DC voltage, e.g. DC supply voltage with at least two different DC voltage levels
• CPC Class Codes: H02M 1/0025 Arrangements for modifying reference values, feedback values or error values in the control loop of a converter
• 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 3/157 with digital control

Abstract

A system and method is provided for determining a voltage output of a programmable power converter based on programming voltage data received from one of a variety of alternate sources. Specifically, in one embodiment of the present invention, a control unit is adapted to monitor a digital data serial interface, a digital data parallel interface, and an analog data interface to determine whether programming voltage data has been received. If programming voltage data has been received, the data is used to determine an output voltage for the programmable power converter. If more than one set of programming voltage data has been received, a determination is made as to which set of data takes priority. The selected set of data is then used to determine an output voltage for the programmable power converter.

Claims

1. A programmable power converter comprising:

at least two interfaces including a digital interface and an analog interface;

a control unit adapted to determine information relating to an output voltage in response to data received from at least one of said at least two interfaces; and

an output voltage builder adapted to produce said output voltage;

wherein the control unit comprises;

circuitry adapted to receive analog voltage data and adapted to generate digital voltage data in response to the analog voltage data, the output voltage builder being adapted to use the digital voltage data to produce the output voltage; and

,

a digital processor adapted to provide control data to the output voltage builder.

2. The programmable power converter of claim 1, further comprising a storage device adapted to store data received from said digital interface.

3. The programmable power converter of claim 1, wherein the storage device comprises a serial interface.

4. The programmable power converter of claim 1, further comprising a storage device adapted to store look-up table data, said look-up table data being used by said control unit to determine said output voltage.

5. The programmable power converter of claim 1, further comprising at least one resistive device connected to said analog interface.

6. The programmable power converter of claim 1, wherein the output voltage builder comprises a pulse-width-modulation controller.

7. The programmable power convert of claim 1, wherein the digital interface comprises a communication bus interface.

8. The programmable power converter of claim 1, wherein the digital interface comprises a serial interface.

9. The programmable power converter of claim 1, wherein the digital interface comprises a parallel interface.

10. A programmable power converter system comprising:

a programming apparatus; and

a programmable power converter adapted to communicate with said programming apparatus, said programmable power converter comprising;

at least two interfaces comprising a digital interface;

and an analog interface;

a control unit adapted to determine information relating to an output voltage in response to data received from at least one of said digital interface, and said analog interface; and

an output voltage builder adapted to produce said output voltage;

wherein the control unit comprises;

circuitry adapted to receive analog voltage data and adapted to generate digital voltage data in response to the analog voltage data, the output voltage builder being adapted to use the digital voltage data to produce the output voltage; and

a digital processor adapted to provide control data to the output voltage builder.

11. The programmable power converter system of claim 10, wherein said programming apparatus comprises a processor.

12. The programmable power converter system of claim 10, further comprising a storage device adapted to store said data if said data is received from said digital interface.

13. The programmable power converter system of claim 12, wherein the storage device comprises a register.

14. The programmable power converter system of claim 10, further comprising a storage device adapted to store look-up table data, said look-up table data being used by said control unit to determine said output voltage.

15. The programmable power converter system of claim 10, further comprising at least one resistive device connected to said analog interface.

16. The programmable power converter system of claim 10, further comprising a serial bus over which the programmable power converter and the programming apparatus communicate.

17. The programmable power converter system of claim 10, wherein the output voltage builder comprises a pulse-width modulation controller.

18. The programmable power converter system of claim 10, wherein the digital interface comprises a communication bus interface.

19. The programmable power converter system of claim 10, wherein the digital interface comprises a serial interface.

20. The programmable power converter system of claim 10, wherein the digital interface comprises a parallel interface.