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    "> Device for the power factor correction in forced switching power supply units
    1.
    发明公开
    Device for the power factor correction in forced switching power supply units". 有权
    Vorrichtung zur Verbesserung des Leistungsfaktorsfürein Schaltnetzteil

    公开(公告)号：EP1650857A2

    公开(公告)日：2006-04-26

    申请号：EP05109431.6

    申请日：2005-10-11

    Applicant: STMicroelectronics S.r.l.

    Inventor： Adragna, Claudio ,  Fagnani, Mauro ,  Gattavari, Giuseppe

    IPC: H02M1/12 ,  H02M7/217

    CPC classification number: H02M1/4225 ,  H02M2001/0022 ,  H02M2001/0025 ,  Y02B70/126

    Abstract: The present invention describes is a device for power factor correction in forced switching power supply unit, comprising a converter (20) and a control device (100) coupled with the converter (20) so as to obtain from an input alternating mains voltage (Vin) a direct regulated voltage (Vout) on the output terminal. The converter (20) comprises a power transistor (M) and the control device (100) comprises an error amplifier (3) having in input on the inverting terminal a first signal (Vr) proportional to the regulated voltage (Vout) and on the non-inverting terminal a reference voltage (Vref), a drive circuit (4-7, 10) of the power transistor (M) coupled with the output terminal of the error amplifier (3). The control device (100) comprises means (42, Cff, 101, Rt, 102) suitable for generating a current signal (It) representative of the effective input voltage; said current signal (It) is in input on the inverting terminal of said error amplifier (3) to vary said regulated voltage (Vout) in reply to variations of the effective input voltage.

    Abstract translation: 本发明描述了一种用于强制开关电源单元中的功率因数校正的装置，包括与转换器（20）耦合的转换器（20）和控制装置（100），以从输入交流电源电压（Vin ）输出端子上的直接调节电压（Vout）。 转换器（20）包括功率晶体管（M），并且控制装置（100）包括误差放大器（3），其在反相端子上具有与调节电压（Vout）成比例的第一信号（Vr） 非反相端子参考电压（Vref），功率晶体管（M）的驱动电路（4-7,10）与误差放大器（3）的输出端耦合。 控制装置（100）包括适于产生代表有效输入电压的电流信号（It）的装置（42，Cff，101，Rt，102） 所述电流信号（It）在所述误差放大器（3）的反相端上输入，以响应于有效输入电压的变化来改变所述调节电压（Vout）。

    Power supply device with detection of malfunctioning
    6.
    发明公开
    Power supply device with detection of malfunctioning 有权
    Stromversorgungsgerätmit Fehlfunktionserkennung

    公开(公告)号：EP1178591A1

    公开(公告)日：2002-02-06

    申请号：EP00830547.6

    申请日：2000-07-31

    Applicant: STMicroelectronics S.r.l.

    Inventor： Bontempo, Gregorio ,  Adragna, Claudio ,  Fagnani, Mauro ,  Pidutti, Albino ,  Pulvirenti, Francesco ,  Quaglino, Roberto ,  Gattavari, Giuseppe

    IPC: H02M3/28

    CPC classification number: H02M3/28 ,  H02M1/32 ,  H02M3/33523

    Abstract: The power supply device comprises a DC-DC converter circuit (8) including a power switch (10) and a driving stage (102). The driving stage (102) has a compensation terminal (102b) on which a compensation voltage (V COMP ) is present and which receives a biasing current (I P ), said driving stage (102) comprising a control circuit (107) having an output terminal connected to a control terminal (11) of the power switch (10) and disconnection-detecting means (105) connected to said compensation terminal (102b) and generating a signal for permanent turning-off of said power switch (10) when the biasing current (I P ) drops below a current-threshold value (I T ). The driving stage (102) moreover comprises over-voltage detecting means (104) connected to the compensation terminal (102b) and generating a signal for temporary turning-off of said power switch (10) when said compensation voltage (V COMP ) exceeds a voltage-threshold value (V T ).

    Abstract translation: 电源装置包括包括电源开关（10）和驱动级（102）的DC-DC转换器电路（8）。 驱动级（102）具有在其上存在补偿电压（VCOMP）并且接收偏置电流（IP）的补偿端子（102b），所述驱动级（102）包括具有输出端子 连接到所述电源开关（10）的控制端子（11）和连接到所述补偿端子（102b）的断开检测装置（105），并且当所述偏置 当前（IP）下降到当前阈值（IT）以下。 驱动级（102）还包括连接到补偿端子（102b）的过电压检测装置（104），并且当所述补偿电压（VCOMP）超过电压时产生用于暂时关断所述电源开关（10）的信号 - 阈值（VT）。

    Transition mode power factor correction device in switching power suppliers
    8.
    发明公开
    Transition mode power factor correction device in switching power suppliers 审中-公开
    开关电源中的过渡模式功率因数校正装置

    公开(公告)号：EP1387476A1

    公开(公告)日：2004-02-04

    申请号：EP02425509.3

    申请日：2002-08-01

    Applicant: STMicroelectronics S.r.l.

    Inventor： Pidutti, Albino ,  Adragna, Claudio ,  Fagnani, Mauro

    IPC: H02M1/12

    CPC classification number: H02M1/4225 ,  Y02B70/126

    Abstract: A device is described for the correction of the power factor in power supply units with forced switching operating in transition mode. Said device comprises a converter (20) and a control device (100, 500) coupled with said converter (20) so as to obtain a regulated voltage (Vout) on the output terminal from an alternating network input voltage (Vin). The converter (20) comprises a power transistor (M) whilst the control device (100, 500) comprises a pilot circuit (3, 5, 6) suitable for determining the switch-on time (Ton) and the switch-off time (Toff) of the power transistor (M). The control device (100, 500) furthermore comprises control means (200, 400, 600) coupled with said pilot circuit (3, 5, 6) and with said converter (20) and capable of prolonging the switch-on time (Ton) of the power transistor (M) at the instants of time wherein the alternating network voltage (Vin) substantially takes on the value zero.

    Abstract translation: 描述了一种装置，用于在强制切换操作在过渡模式下修正电源单元中的功率因数。 所述设备包括转换器（20）和与所述转换器（20）耦合的控制设备（100,500），以从交流网络输入电压（Vin）获得输出端子上的经调节电压（Vout）。 所述转换器（20）包括功率晶体管（M），而所述控制装置（100,500）包括适合于确定所述接通时间（Ton）和所述关断时间的导频电路（3,5,6） Toff）的功率晶体管（M）。 控制装置（100,500）还包括与所述导频电路（3,5,6）和所述转换器（20）耦合并且能够延长接通时间（Ton）的控制装置（200,400,600） 其中交流网络电压（Vin）基本上取值为零的时刻。

    Self-recovering and self-disabling system for converter
    9.
    发明公开
    Self-recovering and self-disabling system for converter 有权
    自动恢复和自我禁用系统的转换器

    公开(公告)号：EP1134881A1

    公开(公告)日：2001-09-19

    申请号：EP00830202.8

    申请日：2000-03-17

    Applicant: STMicroelectronics S.r.l.

    Inventor： Gattavari, Giuseppe ,  Adragna, Claudio ,  Fagnani, Mauro

    IPC: H02M3/335

    CPC classification number: H02M3/335 ,  Y10S323/901

    Abstract: A method and a circuit for disabling a converter while allowing its self-recovery, the converter circuit comprising a transformer (T1) provided with an auxiliary winding (L1) self-supplying, after start-up, an integrated circuit (IC) containing the programming, driving, controlling and protecting circuitry of the converter, a start-up circuit directly connected to a power source, a rectifying circuit (D1, C1) of the voltage induced in the auxiliary winding (L1), supplying through a voltage regulator stage (R1, Z1, T1) the integrated circuit at a regulated voltage (Vreg), at least an external line comprising a sensor of an electrical or physical quantity to be monitored (NTC, Rs), biased to a reference voltage, functionally coupled to a disable input pin (A-REC) of the integrated circuit for disabling it when a certain threshold value is surpassed. The method consists in using the regulated self-supply voltage of the converter (Vreg) as biasing voltage of the external sensor line and as reference voltage of an hysteresis comparator monitoring the signal representing the monitored quantity produced an the external sensor line. Upon the switching of the hysteresis comparator the integrated converter circuit (IC) is turned off and the limiting value of the rectified voltage (Vcc) self-supplying the integrated converter circuit (IC) is markedly reduced by short-circuiting to ground a portion (Z4, Z5) of a sectionable voltage clamp chain (Z2, Z3, Z4, Z5) coupled between the output (Vcc) of the rectifying circuit (D1, C1) and a common ground node of the circuit.

    Abstract translation: 一种用于在允许其自恢复的同时禁用转换器的方法和电路，所述转换器电路包括设置有辅助绕组（L1）的变压器（T1），所述辅助绕组（L1）在启动后自供应集成电路（IC） 编程，驱动，控制和保护转换器的电路，直接连接到电源的启动电路，在辅助绕组（L1）中感应的电压的整流电路（D1，C1），通过调压器级 （Vreg）的至少一个外部线路（R1，Z1，T1），所述外部线路包括被监控的电或物理量的传感器（NTC，Rs），偏置到参考电压，功能性地耦合到 集成电路的禁用输入引脚（A-REC），用于在超过某个阈值时将其禁用。 该方法包括使用转换器的调节自供电压（Vreg）作为外部传感器线路的偏置电压，并将滞后比较器的参考电压用于监控代表监控量产生的外部传感器线路的信号。 在迟滞比较器的切换时，集成转换器电路（IC）关断，并且自供应集成转换器电路（IC）的整流电压（Vcc）的极限值通过将接地的一部分短路 （D1，C1）的输出（Vcc）和该电路的公共接地节点之间的可分段电压钳位链（Z2，Z3，Z4，Z5）的输出端（Z1，Z4，Z5）

    Control of the output power of a dc-dc converter upon varying the switching frequency
    10.
    发明公开
    Control of the output power of a dc-dc converter upon varying the switching frequency 失效
    Steuerung der Ausgangsleistung eines Gleichstromwandlers fall variabler Schaltfrequenz

    公开(公告)号：EP0871328A1

    公开(公告)日：1998-10-14

    申请号：EP97830164.6

    申请日：1997-04-09

    Applicant: STMicroelectronics S.r.l.

    Inventor： Adragna, Claudio ,  Gattavari, Giuseppe ,  Fagnani, Mauro

    IPC: H04N3/185 ,  H02M3/335

    CPC classification number: H04N3/185 ,  H02M3/33523

    Abstract: The power output of a static DC_DC converter employing a current mode PWM controller is controlled upon the varying of the switching frequency, by detecting the sawtooth signal produced by the local oscillator generating a DC signal with amplitude inversely proportional to the frequency and by alternatively clamping the output voltage of the error amplifier of the PWM controller at a voltage proportional to the amplitude of said DC signal or by offsetting the signal present on the currents sensing resistor by a voltage corresponding to the difference between a constant voltage and said DC signal.

    Abstract translation: 采用电流模式PWM控制器的静态DC_DC转换器的功率输出通过检测由本地振荡器产生的具有与频率成反比的幅度的DC信号产生的锯齿波信号，并且通过交替钳位 PWM控制器的误差放大器的输出电压与所述DC信号的幅度成比例的电压，或者通过将存在于电流检测电阻上的信号偏移与恒定电压和所述DC信号之间的差相对应的电压。

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