Autonomous control in current share power supplies

A system for autonomous control by a power supply unit (PSU) among a plurality of current share PSUs in a power supply system, the system comprising:

• a supply bus comprising a voltage rail, the supply bus and voltage rail operatively connected to each current share PSU within the power supply system;
• a plurality of power input feeds, wherein each of the plurality of power input feeds provides input voltage to one of the plurality of current share PSUs;
• and
• the plurality of current share PSUs, wherein each of the plurality of current share PSUs comprises memory storing instructions executed by a central processing unit (CPU), a charging module comprising a resistor and a switch, and a switching regulator comprising an output capacitor, wherein the PSU is configured to:
• receive input power from one of the plurality of power input feeds;
• set a mode of the PSU to ON;
• receive, from a controller using the supply bus shared by the plurality of current share PSUs, a first controlled signal comprising a first plurality of IStar modes and thresholds for the PSU;
• receive a first activation signal activating IStar in the PSU;
• receive, from the plurality of current share PSUs using the supply bus, a second controlled signal comprising a first voltage;
• determine that the first voltage is less than a first Active standby OFF threshold for an IStar mode of Active standby OFF for the PSU;
• set the IStar mode for the PSU to Active standby OFF from the mode of ON;
• receive, from the plurality of current share PSUs using the supply bus, a third controlled signal comprising a second voltage;
• determine that the second voltage is greater than a first Active ON threshold for an IStar mode of Active ON for the PSU;
• and
• set the IStar mode for the PSU to Active ON.

A computer readable medium comprising computer readable program code embodied therein for causing a power supply unit (PSU) among a plurality of PSUs to perform a method, the method comprising:

• receiving, by the PSU, input power from a power input feed;
• setting a mode of the PSU to ON;
• receiving, from a controller using a supply bus shared by the plurality of current share PSUs, a first controlled signal comprising a first plurality of IStar modes and thresholds for the PSU;
• receiving a first activation signal activating IStar in the PSU;
• receiving, from the plurality of current share PSUs using the supply bus, a second controlled signal comprising a first voltage;
• determining that the first voltage is less than a first Active standby OFF threshold for an IStar mode of Active standby OFF for the PSU;
• setting the IStar mode for the PSU to Active standby OFF from the mode of ON;
• receiving, from the plurality of current share PSUs using the supply bus, a third controlled signal comprising a second voltage;
• determining that the second voltage is greater than a first Active ON threshold for an IStar mode of Active ON for the PSU;
• and
• setting the IStar mode for the PSU to Active ON.