POWER MANAGEMENT ARRANGEMENT FOR A MOBILE DEVICE

摘要

A power management arrangement (100) for a mobile device comprising a digital circuit block and an analog circuit block, the power management arrangement being arranged to supply a first voltage to the analog circuit and a second voltage to the digital circuit, the power management arrangement comprising: an input unit (120) adapted to receive input voltages from a plurality of power sources (161-164); a first voltage regulator (140) coupled to the input unit (120) and for supplying the first voltage; a second voltage regulator (150) for supplying the second voltage and arranged to be selectively coupled to one of the first voltage regulator (140) and input unit (120); and control logic (130) adapted to select which of the received input voltages from the plurality of power sources (161-164) provides power to the first and second voltage regulators (140, 150), and to determine the magnitude of the first and second voltages supplied by the first and second voltage regulators.