公开(公告)号：EP2299580A3

公开(公告)日：2011-07-27

申请号：EP10166124.7

申请日：2010-06-16

Applicant: STMicroelectronics S.r.l.

Inventor： Adragna, Claudio ,  Gattavari, Giuseppe ,  Mattavelli, Paolo ,  Orietti, Enrico ,  Spiazzi, Giorgio

IPC: H02M3/335

CPC classification number: H02M3/33569 ,  H02M3/335 ,  Y02B70/1433

Abstract: A switching multi-phase resonant voltage converter may include a plurality of primary windings powered through respective half-bridges, and as many secondary windings connected to an output terminal of the converter and magnetically coupled to the respective primary windings. The primary or secondary windings may be connected such that a real or virtual neutral point is floating.

Abstract translation: 开关多相谐振电压转换器可以包括通过相应的半桥供电的多个初级绕组，以及连接到转换器的输出端并且磁耦合到相应的初级绕组的许多次级绕组。 主或次级绕组可以被连接成使得实际或虚拟中性点浮动。

公开(公告)号：EP1650857B1

公开(公告)日：2009-09-02

申请号：EP05109431.6

申请日：2005-10-11

Applicant: STMicroelectronics S.r.l.

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

IPC: H02M1/42

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

公开(公告)号：EP1178592A1

公开(公告)日：2002-02-06

申请号：EP00830502.1

申请日：2000-07-18

Applicant: STMicroelectronics S.r.l.

Inventor： Adragna, Claudio ,  Spini, Claudio

IPC: H02M3/335

CPC classification number: H02M1/36 ,  Y10S323/901

Abstract: The present invention relates to a start up circuit for commutation power supplies (PWM) or DC/DC converters and to a commutation type power supply comprising such a start up circuit. In an embodiment the start up circuit for commutation power supplies having an input terminal (In) and an output terminal (OUT) comprises: a first current generator (41) able to supply a first prefixed current (I) connected between said input terminal (In) and a first node (45); said first node (45) is coupled to said output terminal (OUT); characterized by further comprising a second current generator (42) able to supply a second prefixed current (K*I) connected between said input terminal (In) and a first terminal of a first controlled switch (44); the value of said second prefixed current (K*I) is greater than or equal to the value of said first prefixed current (I); a second terminal of said first controlled switch (44) is connected to said first node (45); a control circuit (43, V3) of said first controlled switch (44) able to maintain closed said first controlled switch (44) in the case in which the voltage on said output terminal (OUT) is lower than a first prefixed voltage (V3).

Abstract translation: 本发明涉及一种用于换向电源（PWM）或DC / DC转换器的启动电路以及包括这种启动电路的换向型电源。 在一个实施例中，具有输入端（In）和输出端（OUT）的换向电源的启动电路包括：第一电流发生器（41），其能够提供连接在所述输入端（ In）和第一节点（45）; 所述第一节点（45）耦合到所述输出端（OUT）; 其特征在于还包括能够提供连接在所述输入端子（In）和第一受控开关（44）的第一端子之间的第二预定电流（K * I）的第二电流发生器（42）。 所述第二预定电流（K * I）的值大于或等于所述第一前置电流（I）的值; 所述第一控制开关（44）的第二端子连接到所述第一节点（45）; 在所述输出端子（OUT）上的电压低于第一预定电压（V3）的情况下，所述第一受控开关（44）的控制电路（43,43）能够保持关闭所述第一受控开关（44） ）。

公开(公告)号：EP1580639A1

公开(公告)日：2005-09-28

申请号：EP04425199.9

申请日：2004-03-22

Applicant: STMicroelectronics S.r.l.

Inventor： Adragna, Claudio ,  Moriconi, Ugo

IPC: G05F1/70 ,  H02M1/12

CPC classification number: G05F1/70 ,  H02M1/4225 ,  Y02B70/126

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).

公开(公告)号：EP1178591B1

公开(公告)日：2004-04-14

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

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。

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）

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。

公开(公告)号：EP2299580A2

公开(公告)日：2011-03-23

申请号：EP10166124.7

申请日：2010-06-16

Applicant: STMicroelectronics S.r.l.

Inventor： Adragna, Claudio ,  Gattavari, Giuseppe ,  Mattavelli, Paolo ,  Orietti, Enrico ,  Spiazzi, Giorgio

IPC: H02M3/335

CPC classification number: H02M3/33569 ,  H02M3/335 ,  Y02B70/1433

Abstract: A switching multi-phase resonant voltage converter may include a plurality of primary windings powered through respective half-bridges, and as many secondary windings connected to an output terminal of the converter and magnetically coupled to the respective primary windings. The primary or secondary windings may be connected such that a real or virtual neutral point is floating.

Abstract translation: 开关多相谐振电压转换器可以包括通过相应半桥供电的多个初级绕组，以及连接到转换器的输出端子并且磁耦合到相应初级绕组的多个次级绕组。 初级或次级绕组可以连接，使得实际或虚拟中性点浮动。

公开(公告)号：EP1650857A3

公开(公告)日：2007-05-16

申请号：EP05109431.6

申请日：2005-10-11

Applicant: STMicroelectronics S.r.l.

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

IPC: G05F1/70 ,  H02M1/00

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.