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    OUTPUT CONTROL OF DC-DC CONVERTER CORRESPONDING TO FLUCTUATION IN SWITCHING FREQUENCY
    1.
    发明专利
    OUTPUT CONTROL OF DC-DC CONVERTER CORRESPONDING TO FLUCTUATION IN SWITCHING FREQUENCY 失效

    公开(公告)号：JPH10304659A

    公开(公告)日：1998-11-13

    申请号：JP9705098

    申请日：1998-04-09

    Applicant: ST MICROELECTRONICS SRL

    Inventor： ADRAGNA CLAUDIO ,  GATTAVARI GIUSEPPE ,  FAGNANI MAURO

    IPC: H02M3/28 ,  H02M3/335 ,  H04N3/185

    Abstract: PROBLEM TO BE SOLVED: To make the output of a DC/DC converter constant by clamping an error amplifier output signal of a control circuit to a voltage proportional to the amplitude of DC signals inversely proportional to the frequency or by giving an offset equal to a voltage difference between a constant voltage and DC signal to a signal occurred in a current sensing resistor. SOLUTION: A sawtooth wave signal generated by an oscillator is detected by a capacitor Cosc of an RC group. A process of generating a DC signal having an amplitude inversely proportional to that frequency, a process of clamping an error amplifier E/A output voltage to a voltage having an amplitude proportional to the amplitude of the DC signal, or a process of off-setting a signal in a current sensing resistor by a voltage, corresponding to the difference between the constant voltage and DC signal is carried out. By doing this, it becomes possible to obtain a method and a compensating circuit which can be easily realized independently of the characteristics of synchronous signal controlling the switching frequency, and can make the output power of a converter constant against the changes in switching frequency.

    BOOTSTRAP CIRCUIT FOR SWITCHING POWER SUPPLIES
    2.
    发明申请
    BOOTSTRAP CIRCUIT FOR SWITCHING POWER SUPPLIES 审中-公开
    用于切换电源的启动电路

    公开(公告)号：WO2004010569A8

    公开(公告)日：2005-07-21

    申请号：PCT/IT0200478

    申请日：2002-07-19

    Applicant: ST MICROELECTRONICS SRL ,  FAGNANI MAURO ,  PIDUTTI ALBINO ,  ADRAGNA CLAUDIO

    Inventor： FAGNANI MAURO ,  PIDUTTI ALBINO ,  ADRAGNA CLAUDIO

    IPC: H02M1/00 ,  H02M1/36 ,  H02M3/335

    CPC classification number: H02M1/36 ,  H02M3/335 ,  H02M2001/0006

    Abstract: The present invention refers to a starting circuit for switching power supplies (SMPS), to a switching power supply comprising a starting circuit )and an integrated circuit of a switching power supply. In an embodiment thereof the starting circuit (13) for switching power supplies having a first supply voltage (Vin) coming from a first terminal and a second supply voltage (Vcc) coming from a second terminal and a third tenninal (30); said starting circuit comprises: a first current path between said first terminal and said third terminal (30); a second current path between said first tenninal and said second terminal; a third current path between said second terminal and said third terminal (30); a two-way voltage regulator (M3, Dz2, R5, R6) placed along said second current path.

    Abstract translation: 本发明涉及用于切换电源（SMPS）的起动电路，包括起动电路的开关电源）和开关电源的集成电路。 在其实施例中，用于切换来自第一端子的第一电源电压（Vin）和来自第二端子和第三端子（30）的第二电源电压（Vcc）的电源的启动电路（13）。 所述启动电路包括：在所述第一端子和所述第三端子之间的第一电流路径; 所述第一终端和所述第二终端之间的第二电流路径; 所述第二端子和所述第三端子之间的第三电流通路; 沿着所述第二电流路径放置的双向电压调节器（M3，Dz2，R5，R6）。

    CONTROL INTEGRATED CIRCUIT FOR A POWER TRANSISTOR OF AN INSULATED SWITCHING CURRENT REGULATOR
    3.
    发明申请
    CONTROL INTEGRATED CIRCUIT FOR A POWER TRANSISTOR OF AN INSULATED SWITCHING CURRENT REGULATOR 审中-公开
    绝缘开关电流调节器功率晶体管的控制集成电路

    公开(公告)号：WO2011151269A3

    公开(公告)日：2012-05-18

    申请号：PCT/EP2011058766

    申请日：2011-05-27

    Applicant: ST MICROELECTRONICS SRL ,  ADRAGNA CLAUDIO

    Inventor： ADRAGNA CLAUDIO

    IPC: H02M3/335 ,  H02M7/217

    CPC classification number: H02M3/3353 ,  H02M3/33507 ,  H02M3/33523 ,  H02M7/2176 ,  H02M2001/0022

    Abstract: An integrated circuit (100) controls a switch (M) of a switching current regulator. The current regulator comprises primary (L1) and secondary (L2) windings where a first (Ip) and a second (Is) current flow, respectively. The switch (M) is adapted to initiate or interrupt the circulation of the first current (Ip) in the primary winding. The control integrated circuit (100) comprises a comparator (4) configured to compare a first signal (Vcs) representative of said first current to a second signal (Vcsref) and a divider circuit (7) configured to generate said second signal as a ratio of a third signal (A), proportional to a voltage on the primary winding, with a voltage on a capacitor (Ct). The capacitor (Ct) is charged by a further current controlled by the third signal (A) when the second current (Is) is different from zero and is discharged through a resistor (Rt) when the value of said second current is substantially zero.

    Abstract translation: 集成电路（100）控制开关电流调节器的开关（M）。 电流调节器分别包括第一（Ip）和第二（Is）电流的初级（L1）和次级（L2）绕组。 开关（M）适于启动或中断初级绕组中的第一电流（Ip）的循环。 控制集成电路（100）包括比较器（4），其被配置为将表示所述第一电流的第一信号（Vcs）与第二信号（Vcsref）和分频器电路（7）进行比较，所述分频器电路被配置为产生所述第二信号作为比率 与初级绕组上的电压成比例的第三信号（A）与电容器（Ct）上的电压成比例。 当第二电流（Is）不同于零时，通过由第三信号（A）控制的另一电流对电容器（Ct）进行充电，并且当所述第二电流的值基本为零时通过电阻器（Rt）放电。

    INTEGRATED CIRCUIT FOR CONTROLLING A SWITCH OF A CURRENT PATH WITH LEADING EDGE BLANKING DEVICE OF THE CURRENT SIGNAL.
    4.
    发明申请
    INTEGRATED CIRCUIT FOR CONTROLLING A SWITCH OF A CURRENT PATH WITH LEADING EDGE BLANKING DEVICE OF THE CURRENT SIGNAL. 审中-公开
    用于控制电流信号开关的集成电路与电流信号的边缘边缘封装装置的集成电路。

    公开(公告)号：WO2011138276A2

    公开(公告)日：2011-11-10

    申请号：PCT/EP2011056956

    申请日：2011-05-02

    Applicant: ST MICROELECTRONICS SRL ,  SPINI CLAUDIO ,  ADRAGNA CLAUDIO

    Inventor： SPINI CLAUDIO ,  ADRAGNA CLAUDIO

    IPC: H02M3/335

    CPC classification number: H02M3/33507 ,  H02M3/33515 ,  H02M3/33553

    Abstract: An integrated control circuit of a switch is described, which is adapted to open or close a current path; said integrated circuit includes a comparator to compare a first signal with a second signal representative of the current flowing through said current path. The comparator outputs a third variable signal between a low logic level and a high logic level according to whether said second signal is lower than said first signal or vice versa; the integrated circuit has a driver to generate a signal to drive said switch in response to the third signal, and is configured to detect a spike on the leading edge of said second signal and to blank said third signal for a first blanking time period which depends on a turn-on delay of said switch and a second blanking period which depends on the duration of said spike on the leading edge of said second signal.

    Abstract translation: 描述了开关的集成控制电路，其适于打开或关闭电流路径; 所述集成电路包括比较器，用于将第一信号与表示流过所述电流路径的电流的第二信号进行比较。 所述比较器根据所述第二信号是否低于所述第一信号而输出低逻辑电平和高逻辑电平之间的第三可变信号，反之亦然; 所述集成电路具有驱动器，以产生响应于所述第三信号来驱动所述开关的信号，并且被配置为检测所述第二信号的前沿上的尖峰，并且将所述第三信号置为空白，所述第一消隐时间段取决于 在所述开关的导通延迟上，以及取决于所述第二信号的前沿上的所述尖峰的持续时间的第二消隐周期。

    8.
    发明专利
    未知

    公开(公告)号：DE602006011374D1

    公开(公告)日：2010-02-04

    申请号：DE602006011374

    申请日：2006-08-07

    Applicant: ST MICROELECTRONICS SRL

    Inventor： FAGNANI MAURO ,  BARTOLO VINCENZO ,  ADRAGNA CLAUDIO

    IPC: H02M1/42 ,  G05F1/70

    Abstract: Herein described is a control device of a device for the correction of the power factor in forced switching power supplies; said device for the correction of the power factor comprises a converter and said control device is coupled to the converter to obtain from an alternating input line voltage a regulated output voltage. The control device comprises generating means associated to a capacitor for generating a signal representative of the root-mean-square value of the alternating line voltage; the generating means are associated to means for discharging said capacitor. The control device comprises further means for discharging the capacitor suitable for discharging said capacitor when the signal representative of the root-mean-square value of the alternating line voltage goes below a given value.

    9.
    发明专利
    未知

    公开(公告)号：DE60303354D1

    公开(公告)日：2006-04-13

    申请号：DE60303354

    申请日：2003-04-14

    Applicant: ST MICROELECTRONICS SRL

    Inventor： ADRAGNA CLAUDIO ,  FAGNANI MAURO

    IPC: H02M1/00 ,  H02M1/36 ,  H02M3/335

    Abstract: The present invention refers to the switching power supply and particularly to the integrated circuits used for the control of such power supplies. It refers more particularly to a control circuit of the minimum working voltage of the integrated control circuits of such power supplies. In one embodiment the control circuit of the minimum working voltage of the integrated control circuit of a switching power supply having a supply voltage (Vcc); characterized in that said minimum working voltage can assume a first voltage value (Vstop1) and a second voltage value (Vstop2); said first voltage value (Vstop1) is higher than said second voltage value (Vstop2); said minimum working voltage switches from said first voltage value (Vstop1) to said second voltage value (Vstop2) in case of low or null load of said switching power supply; said minimum working voltage switches from said second voltage value (Vstop2) to said first voltage value (Vstop1) if the load is higher than a prefixed load of said switching power supply and at the same time said supply voltage (Vcc) is higher than said first voltage value (Vstop1).

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