Power Supply Usage Determination

A method, comprising:

• determining, by a microprocessor, when an integrator coupled to a power source reaches a preset limit;
• resetting, by the microprocessor, the integrator when the integrator is determined to reach the preset limit;
• incrementing, by the microprocessor, a value stored in a memory when the integrator is reset;
• and
• calculating, by the microprocessor, a power usage of the power source by processing the value stored in the memory.

A computer program product, comprising:

• a non-transitory computer readable medium comprising code to:
• determine when an integrator coupled to a power source reaches a preset limit;
• reset the integrator when the integrator is determined to reach the preset limit;
• increment a value stored in a memory when the integrator is reset;
• and
• calculate a power usage of the power source by processing the value stored in the memory.