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    3.
    发明专利
    未知

    公开(公告)号：ITMI20001692D0

    公开(公告)日：2000-07-25

    申请号：ITMI20001692

    申请日：2000-07-25

    Applicant: ST MICROELECTRONICS SRL

    Inventor： MORICONI UGO ,  ADRAGNA CLAUDIO

    IPC: H02M3/155 ,  H03K17/06

    Abstract: Disclosed is a bootstrap circuit in DC/DC static converters having the characteristic of comprising a fixed frequency signal, a recharge circuit of a capacitor and current generator means, said generator means controlled so as to emit current pulses, in synchrony with said fixed frequency signal, of a predetermined duration, every time that charge accumulated by said capacitor goes below a predetermined level.

    4.
    发明专利
    未知

    公开(公告)号：DE602004013717D1

    公开(公告)日：2008-06-26

    申请号：DE602004013717

    申请日：2004-03-22

    Applicant: ST MICROELECTRONICS SRL

    Inventor： ADRAGNA CLAUDIO ,  MORICONI UGO

    IPC: G05F1/70 ,  H02M1/00 ,  H02M1/12 ,  H02M1/42 ,  H02M3/335

    Abstract: A transition mode operating device for the correction of the power factor in switching power supply units is described. Said device comprises a converter (20) and a control device (100) coupled to the converter (20) for obtaining from an input network alternated voltage (Vin) a regulated voltage (Vout) at the output terminal. The converter (20) comprises a power transistor (M), a circuit (2) adapted to rectifier said network voltage, an inductor arranged between the rectifier circuit (2) and a non drivable terminal of said power transistor (M), said device for the correction of the power factor comprising an auxiliary winding (L1) of the inductor. The control device (100) comprises first means (3) having in input a first signal (Vr) proportional to said regulated voltage (Vout) and a reference signal (Vref) and being adapted to generate an error signal (Se), a multiplier (4) having in input said error signal (Se) and a driving circuit (70) having in input at least a second signal in output from the multiplier (4) and being adapted to determine the on time period (Ton) and the off time period (Toff) of the power transistor (M). The control device (100) comprises second means (50) connected with said auxiliary winding (L1) of the inductor and adapted to generate at least a third signal (Vm) proportional to the network voltage (Vin) during the on time of said power transistor (M); the third signal (Vm) is in input to said multiplier (4) for generating the second signal (Vc).

    5.
    发明专利
    未知

    公开(公告)号：IT1318239B1

    公开(公告)日：2003-07-28

    申请号：ITMI20001692

    申请日：2000-07-25

    Applicant: ST MICROELECTRONICS SRL

    Inventor： MORICONI UGO ,  ADRAGNA CLAUDIO

    IPC: H02M3/155 ,  H03K17/06

    Abstract: Disclosed is a bootstrap circuit in DC/DC static converters having the characteristic of comprising a fixed frequency signal, a recharge circuit of a capacitor and current generator means, said generator means controlled so as to emit current pulses, in synchrony with said fixed frequency signal, of a predetermined duration, every time that charge accumulated by said capacitor goes below a predetermined level.

    6.
    发明专利
    未知

    公开(公告)号：ITMI20001692A1

    公开(公告)日：2002-01-25

    申请号：ITMI20001692

    申请日：2000-07-25

    Applicant: ST MICROELECTRONICS SRL

    Inventor： MORICONI UGO ,  ADRAGNA CLAUDIO

    IPC: H02M3/155 ,  H03K17/06

    Abstract: Disclosed is a bootstrap circuit in DC/DC static converters having the characteristic of comprising a fixed frequency signal, a recharge circuit of a capacitor and current generator means, said generator means controlled so as to emit current pulses, in synchrony with said fixed frequency signal, of a predetermined duration, every time that charge accumulated by said capacitor goes below a predetermined level.

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