Digitally controlled zero voltage switching

    公开(公告)号:US10069397B2

    公开(公告)日:2018-09-04

    申请号:US14757802

    申请日:2015-12-23

    Abstract: Generally, this disclosure describes an apparatus. The apparatus includes switch controller circuitry. The switch controller circuitry includes dead time logic circuitry to determine an estimated dead time interval between a turn off of a first switch and a turn on of a second switch. The first switch and the second switch are coupled at a switched node. The estimated dead time interval is determined based, at least in part, on a difference between an input voltage, Vin, and a switched voltage, Vsw, detected at the switched node just prior to turning off the first switch, a parasitic capacitance, Cpar, associated with the switched node and a maximum inductor current, IL,max. The difference between Vin and Vsw represents the maximum inductor current.

    Digitally controlled zero voltage switching
    12.
    发明申请

    公开(公告)号:US20170187284A1

    公开(公告)日:2017-06-29

    申请号:US14757802

    申请日:2015-12-23

    CPC classification number: H02M1/083 H02M1/38 H02M3/1588 Y02B70/1466

    Abstract: Generally, this disclosure describes an apparatus. The apparatus includes switch controller circuitry. The switch controller circuitry includes dead time logic circuitry to determine an estimated dead time interval between a turn off of a first switch and a turn on of a second switch. The first switch and the second switch are coupled at a switched node. The estimated dead time interval is determined based, at least in part, on a difference between an input voltage, Vin, and a switched voltage, Vsw, detected at the switched node just prior to turning off the first switch, a parasitic capacitance, Cpar, associated with the switched node and a maximum inductor current, IL,max. The difference between Vin and Vsw represents the maximum inductor current.

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