Charging and power supply for mobile devices

  • US 7,893,655 B2
  • Filed: 03/03/2010
  • Issued: 02/22/2011
  • Est. Priority Date: 12/13/2005
  • Status: Active Grant
First Claim
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1. A power management method for allocating power between a rechargeable battery and an electronic system, said electronic system having a power input and a plurality of modes of operation, the method comprising:

  • generating output power;

    receiving a reference voltage from said electronic system;

    determining, based on said reference voltage, a minimum voltage value needed at a node directly connected to said power input of said electronic system;

    sensing that a voltage at said node is below said minimum voltage value; and

    restricting, responsive to said sensing, current from said output power to said battery, thereby increasing power allocated to said electronic system.

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