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    METHOD OF OPERATING A SWITCHED MODE POWER SUPPLY, COMPUTER PROGRAM, AND SWITCHED MODE POWER SUPPLY
    3.
    发明公开
    METHOD OF OPERATING A SWITCHED MODE POWER SUPPLY, COMPUTER PROGRAM, AND SWITCHED MODE POWER SUPPLY 审中-公开
    操作开关模式电源，计算机程序和开关模式电源的方法

    公开(公告)号：EP3248278A1

    公开(公告)日：2017-11-29

    申请号：EP15704110.4

    申请日：2015-01-21

    申请人： Telefonaktiebolaget L M Ericsson (publ)

    发明人： KARLSSON, Magnus Karlsson ,  MALMBERG, Jonas ,  PERSSON, Oscar ,  WAHLEDOW, Fredrik

    IPC分类号： H02M1/14 ,  H02M3/337

    CPC分类号： H02M3/33546 ,  H02M1/14 ,  H02M3/337 ,  H02M2001/0045

    摘要： A method of operating a switched mode power supply comprising a switched mode converter and a control arrangement. The switched mode converter converts an input voltage to an output voltage and includes a primary winding, controllable switch based circuitry connecting the input voltage over the primary winding, a secondary winding coupled to the primary winding, and an LC filter including an inductive element and a capacitive element, wherein the output voltage is obtained as the voltage over the capacitive element and a duty cycle of the switched mode converter can be controlled by controlling the switch based circuitry. The switched mode converter is controlled depending on measurements of the input and output voltages in a hybrid regulated ratio control scheme. The power of the switched mode power supply is shut off or a current thereof is limited, when a current of the switched mode power supply reaches a maximum current.

    DIGITAL CONTROL UNIT HAVING A TRANSIENT DETECTOR FOR CONTROLLING A SWITCHED MODE POWER SUPPLY
    5.
    发明公开
    DIGITAL CONTROL UNIT HAVING A TRANSIENT DETECTOR FOR CONTROLLING A SWITCHED MODE POWER SUPPLY 有权
    与瞬态探测器数字控制单元用于控制开关式电源

    公开(公告)号：EP2671312A2

    公开(公告)日：2013-12-11

    申请号：EP11702976.9

    申请日：2011-02-02

    申请人： Telefonaktiebolaget L M Ericsson (PUBL)

    发明人： KARLSSON, Magnus ,  BORGENGREN, Henrik ,  KULLMAN, Anders ,  MALMBERG, Jonas ,  WAHLEDOW, Fredrik

    IPC分类号： H02M3/157 ,  H03K5/1534 ,  H02M3/156 ,  H02M3/335

    CPC分类号： H02M3/156 ,  H02M2001/0022

    摘要： A switched mode power supply (SMPS) comprising a feedback unit, voltage feed forward (VFF) compensation signal generator and a transient detector. A VFF compensation signal is only applied to the output of the feedback unit when a transient is detected by the transient detector on the input voltage of the SMPS, thereby saving power and computation time. The transient detector comprises a first comparator to detect that a positive transient has occurred if a difference signal is greater than a positive threshold level; a second comparator to determine if the difference signal is within a predetermined range of positive values and output a result that indicates if the difference signal is within the predetermined range of positive values; and a first calculator to detect that a positive transient has occurred if, out of a first predetermined number of consecutive results of the output of the second comparator, there is at least a second predetermined number of results indicating that the difference signal is within the predetermined range of positive values. The transient detector comprises further features for similarly detecting a negative transient.