Patent ID: 9116691
Filing Date: 2015-08-25
Classification: G06F,Y02D

Abstract:
1. Power supply management controller integrated circuit for managing power supply to one or more system units of a system, said integrated circuit comprising power supply means for powering said system units, a power supply control unit for controlling said powering of said system units, a wake-up timer unit, a clock unit for providing a clock signal for said wake-up timer unit and means for acknowledging an active or passive state of said system, wherein said power supply control unit is arranged for cooperating with said means for acknowledging said state of said system for enabling said power supply control unit to cease powering of said system units for de-activation of said system during said passive state of said system, and for enabling said power supply control unit to maintain powering of said system units during an active state of said system, wherein said power supply control unit is arranged for cooperating with said wake-up timer unit for periodically powering said system units during said passive state of said system for enabling activation of said system, and wherein said clock unit is operatively connected to a controlled oscillator, and wherein said oscillator comprises tuning means arranged for periodically tuning said controlled oscillator according to a duty cycle, and wherein said tuning means are also arranged for adapting said tuning duty cycle dependent on a tuning signal which is indicative of an environmental parameter, such that said tuning is performed periodically according to a variable tuning duty cycle, wherein the tuning duty cycle is made dependent on environmental parameters.