Patent ID: 11880216
Assignee: TEXAS INSTRUMENTS INCORPORATED
Field: Control (Instruments)
Classification: CPC G | IPC G

Claim 8:
9. A method of improving transient response in a voltage regulator comprising:
providing a regulated supply at a voltage regulator output;
providing a current signal proportional to a difference in a voltage at the voltage regulator output between a no-load state and a loaded state of the voltage regulator output;
providing the current signal to an input of a dynamic impedance network, wherein the dynamic impedance network has a dynamic impedance that is controlled by a bias current;
providing a drive voltage at an output of the dynamic impedance network;
increasing a drive current provided to the voltage regulator output using a drive transistor;
adaptively reducing the dynamic impedance as the voltage at the voltage regulator output increases; and
holding the dynamic impedance at a value responsive to the voltage at the voltage regulator output reaching a particular value.