Apparatus and method for minimum energy tracking loop

A minimum energy tracking loop method performed by a minimum energy tracking loop apparatus connected to a load system, the method comprising:

• imitating a threshold path of the load system and automatically adjusting a clock frequency as a supply voltage to the load system is changed;
• supplying a power to the load system so as to maintain a constant output during each process of sensing an energy of the load system;
• calculating a proportional energy which is proportional to a total energy consumed by the load system at a specific supply voltage;
• finding a minimum energy point of the load system by monitoring the calculated proportional energy proportional to the total energy at a plurality of supply voltages;
• supplying a power to the load system with a supply voltage at which the load system operates with a minimum energy when the minimum energy point is found;
• and
• converting and providing the found minimum energy point into an analog reference voltage.

A non-transitory computer readable storage medium which stores instructions which are executed by a processor to allow the processor to perform the method comprising:

• imitating a threshold path of a load system and automatically adjusting a clock frequency as a supply voltage to the load system is changed;
• supplying a power to the load system so as to maintain a constant output during each process of sensing an energy of the load system;
• calculating a proportional energy which is proportional to a total energy consumed by the load system at a specific supply voltage;
• finding a minimum energy point of the load system by monitoring the calculated proportional energy proportional to the total energy at a plurality of supply voltages;
• supplying a power to the load system with a supply voltage at which the load system operates with a minimum energy when the minimum energy point is found;
• and
• converting and providing the found minimum energy point into an analog reference voltage.