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    STEP-UP DC-DC CONVERTER
    1.
    发明专利
    STEP-UP DC-DC CONVERTER 失效

    公开(公告)号：JPH11196566A

    公开(公告)日：1999-07-21

    申请号：JP28790598

    申请日：1998-10-09

    Applicant: ST MICROELECTRONICS SRL

    Inventor： CRISCIONE MARCELLO ,  OCCHIPINTI LUIGI

    IPC: G05B13/02 ,  G05F1/56 ,  H02M3/00 ,  H02M3/156

    Abstract: PROBLEM TO BE SOLVED: To provide a step-up continuous mode DC-DC converter with integrated fuzzy logic current control. SOLUTION: A step-up continuous mode DC-DC converter 1 with integrated current control includes comparators 3 and 6 which compare voltage signals outputted by the converter 1 with reference signals in order to generate a deviation signal and a circuit which generates a compensation ramp suitable for generating a ramp signal 7 added to a signal proportional to a current ramp flowing through the converter 1. A signal outputted from the comparator 3 and a signal obtained by the addition of the ramp signal 7 are supplied to the next comparator 6 whose output is transmitted to a means together with an oscillator signal for driving a power transistor in the converter 1. The converter 1 further includes a fuzzy logic control means 11 provided between the comparator 3 and the next comparator 6. The fuzzy logic control means 11 receives the deviation signal outputted by the comparator 3 as an input and outputs a signal which depends upon the hourly change of the deviation signal and is inputted to the next comparator 6.

    HIGH EFFICIENT DC-TO-DC CONVERTER
    2.
    发明专利
    HIGH EFFICIENT DC-TO-DC CONVERTER 失效

    公开(公告)号：JPH11252902A

    公开(公告)日：1999-09-17

    申请号：JP36792998

    申请日：1998-12-24

    Applicant: ST MICROELECTRONICS SRL

    Inventor： CRISCIONE MARCELLO ,  OCCHIPINTI LUIGI

    IPC: H02M3/155 ,  H02M3/158

    Abstract: PROBLEM TO BE SOLVED: To simplify circuit specifications, improve conversion efficiency by connecting a power transistor between first and second terminals of a second electronic switch, also providing a control circuit which drives the transistor by detecting a potential difference between the first and second terminals. SOLUTION: A circuit 30 is provided with a first electronic switch 1 connecting an inductor L to DC input voltage Vin, and a second electronic switch 2 connecting the inductor L to an output terminal OUT. This second electronic switch 2 is provided with a first terminal 3 which is connected to the inductor L, and a second terminal 4 connected to the output terminal OUT, and a power transistor 7 having a principal conductive path is connected between these first and second terminals 3, 4. A potential difference between the first and second terminals 3, 4 of the second electronic switch 2 is detected, so as to have the transistor 7 driven by a control circuit 5.

    3.
    发明专利
    未知

    公开(公告)号：DE69920891D1

    公开(公告)日：2004-11-11

    申请号：DE69920891

    申请日：1999-07-05

    Applicant: ST MICROELECTRONICS SRL

    Inventor： CRISCIONE MARCELLO

    IPC: H02M3/158

    Abstract: A DC/DC converting circuit adapted to convert a DC input voltage (Vin) to a DC output voltage (Vout) uses, as its synchronous rectifier member, a bipolar power transistor (21) of the PMOS type, and allows it to be turned on by a control logic circuit (24) capable of quickly sensing automatically the difference in electric potential between a conduction terminal and the body terminal of the transistor.

    6.
    发明专利
    未知

    公开(公告)号：DE69936506D1

    公开(公告)日：2007-08-23

    申请号：DE69936506

    申请日：1999-04-21

    Applicant: ST MICROELECTRONICS SRL

    Inventor： CRISCIONE MARCELLO

    IPC: H03K17/693

    Abstract: A low-voltage automatic lock-up biasing circuit (1) comprises at least two (2,3) input terminals to which respective voltages are applied, coupled to a node which takes the highest potential. A comparator (4) has inputs coupled to respective input terminals. A level shifter (6) is connected to an output of the comparator. Respective enable elements (11,12) connected between each input terminal and the node are driven each by a respective output of the level shifter.

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