Multiple branch alternative element power regulation

1. A power supply comprising:

a first voltage regulation portion connected in parallel with a second voltage regulation portion that regulates a voltage if an open condition occurs within the first voltage regulation portion; wherein each voltage regulation portion comprises:

a first voltage regulator connected in series with a second voltage regulator that regulates the voltage if a short condition occurs within the first voltage regulator; and

a switching element that routes an output voltage of the first voltage regulator past the second voltage regulator if the output voltage is regulated.

2. The power supply of claim 1 wherein the first voltage regulator is nearest to an input relative to the second voltage regulator.

3. The power supply of claim 1 wherein the first voltage regulator is nearest to an output relative to the second voltage regulator.

4. The power supply of claim 1 wherein the switching element forces the output voltage to be regulated by the second voltage regulator if the output voltage has not been regulated.

5. The power supply of claim 1 further comprising:

a transformer, a rectifier, and a filter.

6. A design structure embodied in a non-transitory machine readable medium for designing, manufacturing, or testing an integrated circuit, the design structure comprising:

a first voltage regulation portion connected in parallel with a second voltage regulation portion that regulates a voltage if an open condition occurs within the first voltage regulation portion; wherein each voltage regulation portion comprises:

a first voltage regulator connected in series with a second voltage regulator that regulates the voltage if a short condition occurs within the first voltage regulator; and

a switching element that routes an output voltage of the first voltage regulator past the second voltage regulator if the output voltage has been regulated.

7. The design structure of claim 6 wherein the first voltage regulator is nearest to an input relative to the second voltage regulator.

8. The design structure of claim 6 wherein the first voltage regulator is nearest to an output relative to the second voltage regulator.

9. The design structure of claim 6 wherein the switching element forces the output voltage to be regulated by the second voltage regulator if the output voltage has not been regulated.

10. The design structure of claim 6 , wherein the design structure comprises a netlist.

11. The design structure of claim 6 , wherein the design structure resides on storage medium as a data format used for the exchange of layout data of integrated circuits.

12. A method comprising:

regulating a voltage with a first voltage regulation portion connected in parallel with a second voltage regulation portion; and

regulating the voltage with the second voltage regulation portion if an open condition occurs within the first voltage regulation portion;

wherein regulating the voltage with the first voltage regulation portion comprises:

regulating the voltage with a first voltage regulator connected in series with a second voltage regulator; and

regulating the voltage with the second voltage regulator if a short condition occurs within the first voltage regulator;

wherein regulating the voltage with the second voltage regulation portion comprises:

regulating the voltage with a third voltage regulator connected in series with a fourth voltage regulator; and

regulating the voltage with the fourth voltage regulator if a short condition occurs within the third voltage regulator.

13. The method of claim 12 wherein the first voltage regulator is nearest an input relative to the second voltage regulator.

14. The method of claim 12 wherein the third voltage regulator is nearest an output relative to the fourth voltage regulator.

15. The method of claim 12 wherein the first voltage regulator is nearest an output relative to the second voltage regulator.

16. The method of claim 12 wherein the third voltage regulator is nearest an output relative to the fourth voltage regulator.