Apparatus, system, and method for a high efficiency redundant power system

A system comprising:

• an electrical device comprising a load that receives power from a first power supply and a second power supply;
• a regulated bus connected between the power supplies and the electrical device such that the regulated bus delivers power from the power supplies to the electrical device;
• the first power supply and second power supply operated in parallel to provide power to the load wherein each power supply is configured to supply full power to the load in response to a failure of the other power supply and wherein each power supply comprises two or more power stages, the two or more power stages comprising a primary stage and a regulator stage, the primary stage configured to regulate voltage on an internal bus that serves as an input for the regulator stage, the regulator stage configured to regulate voltage on the regulated bus connected to the electrical device;
• a power meter configured to detect an amount of power provided by the power supplies to the load and to determine if the provided power is below a predefined power threshold;
• a regulator control module configured to control the operation of the regulator stages of the power supplies such that the regulator stage of the first power supply is shut down in response to the provided power falling below the predefined power threshold such that only the second power supply provides power to the load and wherein the primary stage of the first power supply remains operational;
• and
• a recovery module configured to start up the regulator stage of the first power supply in response to a failure of the second power supply such that the first power supply provides power to the load.

A method for controlling a power supply system, the method comprising:

• controlling a first power supply and a second power supply operated in parallel to provide power to a load wherein each power supply is configured to supply full power to the load in response to a failure of the other power supply and wherein each power supply comprises two or more power stages, the two or more power stages comprising a primary stage and a regulator stage, the primary stage configured to regulate voltage on an internal bus that serves as an input for the regulator stage, the regulator stage configured to regulate voltage on a regulated bus connected to the load;
• receiving data from a power meter configured to detect an amount of power provided by the power supplies to the load and to determine if the provided power is below a predefined power threshold;
• controlling the operation of the regulator stages of the power supplies such that the regulator stage of the first power supply is shut down in response to the provided power falling below the predefined power threshold such that only the second power supply provides power to the load and wherein the primary stage of the first power supply remains operational;
• and
• starting up the regulator stage of the first power supply in response to a failure of the second power supply such that the first power supply provides power to the load.