Voltage regulator and method having reduced wakeup-time and increased power efficiency

A method comprising:

• pre-charging a compensation capacitor by electrically connecting the compensation capacitor through a switching circuit to a high-impedance node of a standby regulator in a voltage regulator to pre-charge the compensation capacitor when the voltage regulator is in a standby mode;
• and
• reducing power consumption of the voltage regulator during transition from the standby mode to an active mode by electrically connecting the pre-charged compensation capacitor through the switching circuit to a high-impedance node of an active regulator when the voltage regulator is in the active mode to reduce charge dissipated from the compensation capacitor.

A method comprising:

• pre-charging a compensation capacitor by electrically connecting the compensation capacitor through a switching circuit to a high-impedance node of a standby regulator in a voltage regulator to pre-charge the compensation capacitor when the voltage regulator is in a standby mode;
• and
• reducing wake-up time of the voltage regulator during transition from the standby mode to an active mode without use of an adaptive biasing stack by electrically connecting the pre-charged compensation capacitor through the switching circuit to a high-impedance node of an active regulator when the voltage regulator transitions from the standby mode to active mode.