Self-test using reverse currents in multiphase power supplies

1. A computer system for using reverse currents to self-test multiphase power supply circuits comprising:

one or more multiphase power supply circuits comprising a plurality of circuit phases, each multiphase power supply circuit of the one or more multiphase power supply circuits electrically coupled to a plurality of electric power phases, wherein each circuit phase of the plurality of circuit phases is coupled to an electric power phase of the plurality of electric power phases;

one or more processing devices;

one or more memory devices communicatively and operably coupled to the one or more processing devices;

a circuit self-testing tool at least partially resident within the one or more memory devices, the circuit self-testing tool communicatively and operably coupled to the one or more multiphase power supply circuits and the one or more processing devices, the circuit self-testing tool configured to:

execute one or more operations on at least two circuit phases of the one or more multiphase power supply circuits comprising:

adjust a voltage on one or more first phases of the plurality of circuit phases to a plurality of voltages; and

induce a reverse current from one or more second phases of the plurality of circuit phases to the one or more first phases.

2. The system of claim 1 , further comprising:

one or more digital communications connections communicatively and operably coupled to the circuit self-testing tool and the at least two circuit phases of the one or more multiphase power supply circuits.

3. The system of claim 1 , further comprising:

a maintenance operations mode selection module configured to select one or more of:

an OR'ing determination;

an overcurrent protection (OCP) determination;

a load line calibration; and

a voltage undershoot and overshoot determination.

4. The system of claim 1 , further comprising:

a circuit phase assignment module configured to select:

one of the first phase and the second phase as the source phase; and

one of the second phase and the first phase as the sink phase.

5. The system of claim 1 , further comprising:

a source phase voltage control module; and

a sink phase voltage control module.

6. The system of claim 5 , wherein the circuit self-testing tool is further configured to induce the reverse current through one or more of:

decrementing the sink voltage through the sink phase voltage control module; and

incrementing the source voltage through the source phase voltage control module.

7. The system of claim 6 , wherein the circuit self-testing tool is further configured to induce the reverse current through one or more of:

decrementing the sink voltage in a sequence of decreasing values;

incrementing the source voltage in a sequence of increasing values;

decrementing the sink voltage in a smooth, continuous action until the operation of the one or more operations is ended; and

incrementing the source voltage in a smooth, continuous action until the operation of the one or more operations is ended.

8. The system of claim 1 , wherein the circuit self-testing tool is fully resident within the one or more memory devices.

9. A computer program product, comprising:

one or more computer readable storage media; and

program instructions collectively stored on the one or more computer storage media, the program instructions comprising:

program instructions to execute one or more operations on at least two circuit phases of one or more multiphase power supply circuits, wherein the one or more multiphase power supply circuits include a plurality of circuit phases, each multiphase power supply circuit of the one or more multiphase power supply circuits is electrically coupled to a plurality of electric power phases, wherein each circuit phase of the plurality of circuit phases is coupled to an electric power phase of the plurality of electric power phases, the program instructions to execute the one or more operations comprising:

program instructions to adjust a voltage on one or more first phases of the plurality of circuit phases to a plurality of voltages; and

program instructions to induce a reverse current from one or more second phases of the plurality of circuit phases to the one or more first phases.

10. The computer program product of claim 9 , further comprising:

program instructions to communicate between a circuit self-testing tool and the at least two circuit phases of the one or more multiphase power supply circuits through one or more digital communications connections.

11. The computer program product of claim 9 , further comprising executing the one or more operations comprising:

program instructions to execute an OR'ing determination;

program instructions to execute an overcurrent protection (OCP) determination;

program instructions to execute a load line calibration; and

program instructions to execute a voltage undershoot and overshoot determination.

12. The computer program product of claim 9 , further comprising:

program instructions to select a source phase and a sink phase from the one or more first phases and the one or more second phases.

13. The computer program product of claim 12 , further comprising program instructions to induce the reverse current through one or more of:

program instructions to decrement a sink voltage; and

program instructions to increment a source voltage.

14. The computer program product of claim 12 , further comprising program instructions to induce the reverse current through one or more of:

program instructions to decrement the sink voltage in a sequence of decreasing values;

program instructions to increment the source voltage in a sequence of increasing values;

program instructions to decrement the sink voltage in a smooth, continuous action until the operation of the one or more operations is ended; and

program instructions to increment the source voltage in a smooth, continuous action until the operation of the one or more operations is ended.

15. A computer-implemented method for using reverse currents to self-test multiphase power supply circuits comprising:

executing one or more operations on at least two circuit phases of one or more multiphase power supply circuits, wherein the one or more multiphase power supply circuits include a plurality of circuit phases, each multiphase power supply circuit of the one or more multiphase power supply circuits is electrically coupled to a plurality of electric power phases, wherein each circuit phase of the plurality of circuit phases is coupled to an electric power phase of the plurality electric power phases, the executing the one or more operations comprising:

adjusting a voltage on one or more first phases of the plurality of circuit phases to a plurality of voltages; and

inducing a reverse current from one or more second phases of the plurality of circuit phases to the one or more first phases.

16. The method of claim 15 , further comprising:

communicating between a circuit self-testing tool and the at least two circuit phases of the one or more multiphase power supply circuits through one or more digital communications connections.

17. The method of claim 15 , further comprising the executing one or more operations comprising:

executing an OR'ing determination;

executing an overcurrent protection (OCP) determination;

executing a load line calibration; and

executing a voltage undershoot and overshoot determination.

18. The method of claim 15 , further comprising:

selecting a source phase and a sink phase from the one or more first phases and the one or more second phases.

19. The method of claim 18 , further comprising inducing the reverse current through one or more of:

decrementing a sink voltage; and

incrementing a source voltage.

20. The method of claim 18 , further comprising inducing the reverse current through one or more of:

decrementing the sink voltage in a sequence of decreasing values;

incrementing the source voltage in a sequence of increasing values;

decrementing the sink voltage in a smooth, continuous action until the operation of the one or more operations is ended; and

incrementing the source voltage in a smooth, continuous action until the operation of the one or more operations is ended.