Power management integrated circuit

A power management integrated circuit, comprising:

• a first loop circuit configured to output a first output signal;
• a second loop circuit configured to output a second output signal;
• a third loop circuit configured to output a third output signal;
• a power tracker configured to track the first, second and third output signals, aggregate an offset voltage with a selection signal which corresponds to one of the first, second and third output signals, and generate a reference voltage;
• and
• a charging circuit configured to generate an input voltage corresponding to the reference voltage and provide the input voltage to the first, second and third loop circuits.

A power management integrated circuit, comprising:

• a first regulator configured to output a first output voltage and a first output current;
• a second regulator configured to output a second output voltage and a second output current;
• a third regulator configured to output a third output voltage and a third output current;
• a power tracker configured to track the first, second and third output voltages and the first, second and third output currents, aggregate an offset voltage with a selection signal, and generate a reference voltage, wherein the selection signal corresponds to the first output voltage, the second output voltage, the third output voltage, the first output current, the second output current or the third output current;
• and
• a sub-regulator configured to generate an input voltage corresponding to the reference voltage and provide the generated input voltage to the first, second and third regulators.