Power management apparatus with rapid short response and full load recovery

摘要

A voltage feedback loop employed with a power distribution switch rapidly responds to a predetermined drop in output voltage to increase the resistance of the switch for a predetermined time. After this predetermined time, a current feedback loop controls the resistance until the output voltage recovers, while also isolating the voltage feedback loop from the switch.

主权项

1. A power management apparatus, comprising:
a switching device that provides a resistance between a power source terminal and an output terminal, said power source terminal having an input voltage, and said output terminal having an output voltage; and a voltage feedback loop coupled to said switching device and said output terminal, said voltage feedback loop configured to monitor said output voltage and selectively control said switching device based on said output voltage to increase said resistance for a predetermined time duration, wherein said voltage feedback loop is configured to selectively generate a digital pulse of said predetermined time duration based on said output voltage, and wherein said resistance increases in response to said digital pulse.