Patents Assigned to Wolfson Microelecttronics plc
  • Charge pump circuit and methods of operation thereof
    Patent number: 8427851
    Abstract: A charge pump circuit, and associated method and apparatuses, for providing a split-rail voltage supply, the circuit having a network of switches that is operable in a number of different states and a controller for operating the switches in a sequence of said states so as to generate positive and negative output voltages together spanning a voltage approximately equal to the input voltage and centered on the voltage at the common terminal.
    Type: Grant
    Filed: June 2, 2011
    Date of Patent: April 23, 2013
    Assignee: Wolfson Microelecttronics plc
    Inventor: John P. Lesso