Patent ID: 6586911
Filing Date: 2003-07-01
Classification: G06F,H01M,H02J,H04W,Y02D,Y02E

Abstract:
A power management system in an electronic system that is powered by a rechargeable battery, comprising:a protection circuit that is coupled to an input power source, wherein the protection circuit is arranged to protect the electronic system from a non-compliant power source when activated; a load circuit; a load switching circuit that is arranged to couple the load circuit to the rechargeable battery when activated, and arranged to decouple the load circuit from the rechargeable battery when deactivated, such that battery power is conserved when the load switching circuit is deactivated; and a monitor circuit that is arranged to monitor a sense voltage, wherein the sense voltage is associated with the rechargeable battery, and wherein the monitor circuit is configured to deactivate the protection circuit when a first predetermined voltage level exceeds the sense voltage, activate the protection circuit when the sense voltage exceeds a second predetermined voltage level, deactivate the load switching circuit when a fifth predetermined voltage level exceeds the sense voltage, and activate the load switching circuit when the sense voltage exceeds a sixth predetermined voltage level.