Dual input RTC supply generation with replica power path and autonomous mode of operation from the system supply

    公开(公告)号:EP2511791B1

    公开(公告)日:2018-06-06

    申请号:EP11368016.9

    申请日:2011-04-13

    IPC分类号: G06F1/30

    摘要: Circuits and methods providing a electronic power supply applicable to any dual supply rail systems, which require a smooth and uninterrupted output supply and a replica power path and autonomous mode of operation from the system power supply are disclosed. In a preferred embodiment of the invention the power supply is applied to a real time clock. An Innovative Replica Power Path concept and circuit implementation ensures the smooth and uninterrupted transfer of power from one input source to the other. The circuit features a Latched Supply Comparator that guarantees the commutation to the Replica Power Path only happens after the voltage is settled. Zero power consumption from the back-up energy source is achieved in the presence of an alternative higher voltage source. The generated RTC supply voltage does not suffer from abrupt changes when the voltage level of the main system power source (battery or charger) is connected or disconnected. The invention allows for maximum utilization of the energy left in the main battery, thus extending the life of the lower capacity backup battery/super-cap.

    CIRCUIT AND METHOD FOR PROVIDING AN UNINTERRUPTIBLE POWER SUPPLY

    公开(公告)号:EP2907220B8

    公开(公告)日:2018-04-18

    申请号:EP12809849.8

    申请日:2012-10-11

    发明人: LACARNOY, Alain

    IPC分类号: H02J9/06

    摘要: An uninterruptible power supply operates between a main supply input, a battery and a load, and comprises an input converter and an output converter. In a first mode of operation, AC mains power received at the supply input is converted by said input converter and output converter in series to provide an AC power supply to the load. In a second mode of operation, stored energy is released from the battery via the output converter to maintain the AC power supply to the load. A further converter can be used during the first mode of operation to charge the battery from a charging supply input. The charging current bypasses the input converter, allowing charging rate to be increased, without increasing a power rating of the input converter. The further converter may be bidirectional and be used also in the second mode.

    POWER-SUPPLY SWITCHING CIRCUIT AND ARTIFICIAL HEART SYSTEM
    9.
    发明授权
    POWER-SUPPLY SWITCHING CIRCUIT AND ARTIFICIAL HEART SYSTEM 有权
    电源开关电路和人工心脏系统

    公开(公告)号:EP2911271B1

    公开(公告)日:2017-11-22

    申请号:EP13847151.1

    申请日:2013-09-30

    发明人: SHINOHARA, Kazuto

    摘要: Provided is a power source switching circuit 100 of the present invention is a power source switching circuit for selectively connecting a first power source and a second power source where at least one of the first and second power sources is a battery power source to a load by switching the first power source and the second power source, the power source switching circuit includes: a first power source connection part and a second power source connection part configured to enable the connection of the first power source and the second power source thereto; a load connection part configured to enable the connection of the load thereto; a first switch part and a second switch part provided between each power source connection part and the load connection part; and a switching control part configured to perform a switch control of each switch part. Each switch part includes a plurality of FETs which are serially connected in the same direction such that a cathode side of a body diode is arranged on a load connection part side, and the number of plurality of FETs is the number which is determined such that a sum of forward drop voltages of the body diodes of each FET exceeds the difference between a full charge voltage and a discharge voltage of the battery power source. The power source switching circuit of the present invention can realize switching of power sources with high reliability.

    SOLAR POWER GENERATION SYSTEM AND FEEDING SYSTEM

    公开(公告)号:EP2546971A4

    公开(公告)日:2017-11-01

    申请号:EP11753173

    申请日:2011-02-21

    申请人: TOSHIBA KK

    摘要: According to one embodiment, a photovoltaic generation system includes a direct-current power supply, which includes a photovoltaic 3 and a battery 4 to discharge a direct-current power to a converter 2, the converter 2 which supplies the converted power to a power system 1, a voltage detector 5 which detects a voltage at a connection point between the converter 2 and power system 1, a current detector 6 which detects a current output from the converter 2, an effective power detector 7 which detects effective power from a voltage value detected by the voltage detector 5 and a current value detected by the current detector 6, a rotor speed computation unit 10 which computes an angular frequency of the voltage output from the converter 2, based on an effective power value detected by the effective power detector 7, and an output target value of effective power, an electrical characteristics computation unit 21 which computes an output voltage target value of the converter 2, based on a current value detected by the current detector 6, and a set voltage value, and an angular frequency, and a power conversion controller 14 which controls the converter 2 according to the output voltage target value.