Minimizing voltage drops on printed circuit boards (PCBs) by using current injectors

A device comprising:

• a circuit board comprising,
• a plurality of chips,
• a first brick to provide a first voltage to the plurality of chips,
• the first brick including storage capacitors, and
• the first brick being to:
• receive power from a source outside of the circuit board, and
• deliver the power to the storage capacitors,
• a second brick to provide, based on a value of the first voltage, a second voltage to the plurality of chips,
• the first brick being larger in size than the second brick, and
• the value of the first voltage being based on the power, and
• a remote sense line to provide the value of the first voltage from the first brick to the second brick,
• the second brick ramping up the second voltage when the second voltage is less than the first voltage.

A brick, of a printed circuit board, comprising:

• a first connection to receive a first voltage measurement of an output of another brick on the printed circuit board,
• a size of the brick being smaller than a size of the other brick,
• the other brick including storage capacitors,
• the other brick receiving power from a source outside of the printed circuit board and delivering the power to the storage capacitors, and
• the first voltage measurement being based on the power;
• a second connection to receive a second voltage measurement measured at a sensing point on the printed circuit board;
• and
• a current injector to:
• determine an amount of current to inject based on the first voltage measurement and the second voltage measurement, and
• inject the amount of current into an impedance to produce a voltage output, where the voltage output is ramped up when the second voltage measurement is less than the first voltage measurement.