公开(公告)号：USRE43516E1

公开(公告)日：2012-07-17

申请号：US12908799

申请日：2010-10-20

申请人： Claudio Adragna ,  Mauro Fagnani ,  Ugo Moriconi

发明人： Claudio Adragna ,  Mauro Fagnani ,  Ugo Moriconi

IPC分类号： H02H7/12 ,  G05F1/70 ,  H02M3/335

CPC分类号： H02M1/32 ,  H02M1/4225 ,  Y02B70/126

摘要： A device corrects the power factor in forced switching power supplies and includes a converter and a control device to obtain a regulated voltage on an output terminal. The control device comprises an error amplifier having an inverting terminal (Vout) and a non-inverting terminal receiving a reference voltage. The device includes first and second resistances coupled in series with a conduction element positioned between the first resistance and the inverting terminal of the error amplifier and a fault detector suitable for detecting the electrical connection of the conduction element with the output terminal and suitable for detecting an output signal of the second resistance. The fault detector is suitable for supplying a malfunction signal upon detecting an electric disconnection of the conduction element from the output terminal or when the output signal of the second resistance tends to zero.

摘要翻译： 一个装置可以纠正强制开关电源的功率因数，并包括一个转换器和一个控制装置，以便在输出端子上获得稳压电压。 控制装置包括具有反相端（Vout）和接收参考电压的同相端的误差放大器。 该器件包括与位于误差放大器的第一电阻和反相端之间的导电元件串联耦合的第一和第二电阻，以及适用于检测导电元件与输出端子的电连接并适合于检测 第二电阻的输出信号。 故障检测器适用于在检测到导电元件与输出端子断电时或者当第二电阻的输出信号趋于零时，提供故障信号。

公开(公告)号：US5532645A

公开(公告)日：1996-07-02

申请号：US328233

申请日：1994-10-24

申请人： Mauro Fagnani ,  Bruno Ferrario ,  Paolo Sandri

发明人： Mauro Fagnani ,  Bruno Ferrario ,  Paolo Sandri

IPC分类号： H03F3/343 ,  H03F1/00 ,  H03F1/30 ,  H03F3/26

CPC分类号： H03F1/305

摘要： A circuit for regulating the charging time of the output node of an amplifier at start up. The output node commonly comprises an external soft-start capacitor charged by a current delivered by a pull-up transistor of a push-pull output stage of the amplifier, through a decoupling diode that is functionally connected between the output node of the amplifier and a terminal of the external soft-start capacitor. The present application provides a current mirror feed back circuit capable of mirroring the charge current of the external soft-start capacitor onto the driving node of the pull-up transistor of the output stage of the amplifier. The regulating circuit permits use of an external capacitance of extremely small size. Upon the reaching of a fully charged condition by the external capacitor, the control circuit self-isolates and does not influence in any way the normal operation of the amplifier.

摘要翻译： 用于调节放大器输出节点在启动时的充电时间的电路。 输出节点通常包括由放大器的推挽输出级的上拉晶体管通过放大器的上拉输出级提供的电流充电的外部软启动电容器，该去耦二极管功能上连接在放大器的输出节点和 端子的外部软启动电容。 本申请提供了能够将外部软启动电容器的充电电流镜像到放大器的输出级的上拉晶体管的驱动节点上的电流镜反馈电路。 调节电路允许使用极小尺寸的外部电容。 当外部电容器达到完全充电状态时，控制电路自我隔离并且不会以任何方式影响放大器的正常工作。

公开(公告)号：US20070274111A1

公开(公告)日：2007-11-29

申请号：US10589038

申请日：2005-02-21

申请人： Claudio Adragna ,  Mauro Fagnani

发明人： Claudio Adragna ,  Mauro Fagnani

IPC分类号： H02M3/24

CPC分类号： H02M3/28 ,  H02M2001/0006 ,  H02M2001/009

摘要： A circuit for reducing the variations of auto-supply voltage of a control circuit of a switching power supply, where the control circuit supplies an activation or deactivation signal of a power transistor, includes an auto-supply voltage generator, a controlled switch capable of selectively connecting the generator to the control circuit, and a driving circuit of the controlled switch that supplies a closing signal of the controlled switch after a predefined delay of time starting from the deactivation command.

摘要翻译： 一种用于减小开关电源的控制电路的自动电源电压变化的电路，其中控制电路提供功率晶体管的激活或去激活信号，其包括自动供电电压发生器，能够选择性地 将所述发电机连接到所述控制电路;以及所述受控开关的驱动电路，在从所述停用命令开始的预定义的延迟时间之后提供所述受控开关的闭合信号。

公开(公告)号：US20060152951A1

公开(公告)日：2006-07-13

申请号：US10523244

申请日：2002-07-19

申请人： Mauro Fagnani ,  Albino Pidutti ,  Claudio Adragna

发明人： Mauro Fagnani ,  Albino Pidutti ,  Claudio Adragna

IPC分类号： H02M1/00

CPC分类号： H02M1/36 ,  H02M3/335 ,  H02M2001/0006

摘要： A bootstrap circuit for switching power supplies (SMPS), a switching power supply including a bootstrap circuit, and an integrated circuit of a switching power supply, are provided. The bootstrap circuit (13) for switching power supplies includes a first supply voltage (Vin) coming from a first terminal and a second supply voltage (Vcc) coming from a second terminal and a third terminal (30). The bootstrap circuit includes: a first current path between the first terminal and the third terminal (30); a second current path between the first terminal and the second terminal; a third current path between the second terminal and the third terminal (30); and a two-way voltage regulator (M3, Dz2, R5, R6) placed along the second current path.

摘要翻译： 提供了一种用于开关电源（SMPS）的自举电路，包括自举电路的开关电源和开关电源的集成电路。 用于切换电源的自举电路（13）包括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）。 引导电路包括：第一端子和第三端子之间的第一电流路径; 第一端子和第二端子之间的第二电流路径; 第二端子和第三端子之间的第三电流通路; 以及沿着第二电流路径放置的双向电压调节器（M 3，Dz 2，R 5，R 6）。

公开(公告)号：US06946819B2

公开(公告)日：2005-09-20

申请号：US10633321

申请日：2003-08-01

申请人： Mauro Fagnani ,  Albino Pidutti ,  Claudio Adragna

发明人： Mauro Fagnani ,  Albino Pidutti ,  Claudio Adragna

IPC分类号： H02M1/00 ,  H02M1/42 ,  G05F1/70

CPC分类号： H02M1/4225 ,  Y02B70/126

摘要： A device for the correction of the power factor in power supply units with forced switching operating in transition mode is described. The device comprises a converter and a control device coupled to said converter so as to obtain from an alternating network input voltage a regulated output voltage on the output terminal. The converter comprises a power transistor and the control device comprises a pilot circuit suitable for determining the period of switched-on time and the period of switched-off time of said power transistor and control means coupled to said pilot circuits and with said converter and which are capable of prolonging said period of switched-on time of the power transistor at the instants of time in which the alternating network voltage substantially assumes the value zero.

摘要翻译： 描述用于在过渡模式下以强制切换操作的电源单元中的功率因数校正的装置。 该装置包括转换器和耦合到所述转换器的控制装置，以便从输入端子上的交变网络输入电压获得稳定的输出电压。 该转换器包括一个功率晶体管，该控制装置包括一个导频电路，适用于确定所述功率晶体管的接通时间周期和关断时间的周期以及耦合到所述导频电路和所述转换器的控制装置， 能够在交流网络电压基本上为零值的时刻延长功率晶体管的接通时间的所述周期。

公开(公告)号：US06487059B2

公开(公告)日：2002-11-26

申请号：US09919343

申请日：2001-07-30

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

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

IPC分类号： H02H320

CPC分类号： H02M3/28 ,  H02M1/32 ,  H02M3/33523

摘要： The power supply device includes a DC-DC converter circuit having a power switch and a driving stage. The driving stage has a compensation terminal on which a compensation voltage is present, and which receives a biasing current. The driving stage includes a control circuit having an output terminal connected to a control terminal of the power switch and disconnection-detecting circuitry connected to the compensation terminal and generating a signal for permanent turning-off of the power switch when the biasing current drops below a current-threshold value. The driving stage moreover includes over-voltage detecting circuitry connected to the compensation terminal and generating a signal for temporary turning-off of the power switch when the compensation voltage exceeds a voltage-threshold value.

摘要翻译： 电源装置包括具有电源开关和驱动级的DC-DC转换器电路。 驱动级具有补偿端子，其上存在补偿电压，并且接收偏置电流。 驱动级包括控制电路，该控制电路具有连接到电源开关的控制端子的输出端子和连接到补偿端子的断开检测电路，并且当偏置电流下降至低于该值时产生用于永久关断电源开关的信号 电流阈值。 此外，驱动级还包括连接到补偿端子的过电压检测电路，并且当补偿电压超过电压阈值时，产生暂时关断电源开关的信号。

公开(公告)号：US07239120B2

公开(公告)日：2007-07-03

申请号：US11255074

申请日：2005-10-20

申请人： Claudio Adragna ,  Mauro Fagnani ,  Giuseppe Gattavari

发明人： Claudio Adragna ,  Mauro Fagnani ,  Giuseppe Gattavari

IPC分类号： G05F1/70 ,  H02M7/155

CPC分类号： H02M1/4225 ,  H02M2001/0022 ,  H02M2001/0025 ,  Y02B70/126

摘要： A device for power factor correction in a forced switching power supply unit is provided. The device includes a converter and a control device coupled to the converter so as to obtain from an input alternating mains voltage a direct regulated voltage on the output terminal. The converter includes a power transistor, and the control device includes an error amplifier having its inverting terminal coupled to a first signal that is proportional to the regulated voltage and its non-inverting terminal coupled to a reference voltage. A drive circuit of the power transistor is coupled to the output terminal of the error amplifier. The control device also includes a circuit for generating a current signal that is representative of the effective input voltage. The current signal is coupled to the inverting terminal of the error amplifier to vary the regulated voltage in reply to variations in the effective input voltage.

摘要翻译： 提供了一种用于强制开关电源单元中的功率因数校正的装置。 该装置包括转换器和耦合到转换器的控制装置，以便从输入端获得交流电源电压在输出端子上的直接调节电压。 该转换器包括功率晶体管，并且该控制装置包括误差放大器，其反相端耦合到与调节电压成比例的第一信号，其反相端与耦合到参考电压。 功率晶体管的驱动电路耦合到误差放大器的输出端。 控制装置还包括用于产生代表有效输入电压的电流信号的电路。 电流信号耦合到误差放大器的反相端，以根据有效输入电压的变化来改变调节电压。

公开(公告)号：US20050001601A1

公开(公告)日：2005-01-06

申请号：US10824630

申请日：2004-04-14

申请人： Claudio Adragna ,  Mauro Fagnani

发明人： Claudio Adragna ,  Mauro Fagnani

IPC分类号： H02M1/00 ,  H02M1/36 ,  G05F1/40

CPC分类号： H02M1/36 ,  Y10S323/901

摘要： A circuit is provided for controlling a minimum operating voltage of an integrated control circuit of a switching power supply. The circuit includes at least one switch for switching the minimum operating voltage from a first voltage value to a second voltage value under conditions of low or null load of the switching power supply, and for switching the minimum operating voltage from the second voltage value to the first voltage value if the load of the switching power supply is greater than a predetermined load and the supply voltage is greater than the first voltage value. The minimum operating voltage can assume at least the first voltage value and the second voltage value, and the first voltage value is greater than the second voltage value. Also provided is a method for controlling a minimum operating voltage of an integrated control circuit of a switching power supply.

摘要翻译： 提供用于控制开关电源的集成控制电路的最小工作电压的电路。 该电路包括至少一个开关，用于在开关电源的低或零负载条件下将最小工作电压从第一电压值切换到第二电压值，并且将最小工作电压从第二电压值切换到 第一电压值，如果开关电源的负载大于预定负载，并且电源电压大于第一电压值。 最小工作电压可以采取至少第一电压值和第二电压值，并且第一电压值大于第二电压值。 还提供了一种用于控制开关电源的集成控制电路的最小工作电压的方法。

公开(公告)号：US07864554B2

公开(公告)日：2011-01-04

申请号：US10589038

申请日：2005-02-21

申请人： Claudio Adragna ,  Mauro Fagnani

发明人： Claudio Adragna ,  Mauro Fagnani

IPC分类号： H02M7/5383 ,  H02M3/335

CPC分类号： H02M3/28 ,  H02M2001/0006 ,  H02M2001/009

摘要： A circuit for reducing the variations of auto-supply voltage of a control circuit of a switching power supply, where the control circuit supplies an activation or deactivation signal of a power transistor, includes an auto-supply voltage generator, a controlled switch capable of selectively connecting the generator to the control circuit, and a driving circuit of the controlled switch that supplies a closing signal of the controlled switch after a predefined delay of time starting from the deactivation command.

摘要翻译： 一种用于减小开关电源的控制电路的自动电源电压变化的电路，其中控制电路提供功率晶体管的激活或去激活信号，其包括自动供电电压发生器，能够选择性地 将所述发电机连接到所述控制电路;以及所述受控开关的驱动电路，在从所述停用命令开始的预定义的延迟时间之后提供所述受控开关的闭合信号。

公开(公告)号：US6011706A

公开(公告)日：2000-01-04

申请号：US55639

申请日：1998-04-06

申请人： Claudio Adragna ,  Giuseppe Gattavari ,  Mauro Fagnani

发明人： Claudio Adragna ,  Giuseppe Gattavari ,  Mauro Fagnani

IPC分类号： H02M3/28 ,  H02M3/335 ,  H04N3/185 ,  H02M1/16 ,  G05F1/40 ,  H01J29/70

CPC分类号： H04N3/185 ,  H02M3/33523

摘要： 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 an amplitude inversely proportional to the frequency. The power output is controlled by alternatively clamping the output voltage of the error amplifier of the PWM controller at a voltage proportional to the amplitude of the DC signal, or by offsetting the signal present on the current sensing resistor by a voltage corresponding to the difference between a constant voltage and the DC signal.

摘要翻译： 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DC信号产生的锯齿波信号来控制开关频率的变化。 功率输出通过将PWM控制器的误差放大器的输出电压交替钳位在与DC信号的幅度成比例的电压下，或者通过将存在于电流感测电阻器上的信号抵消与 恒定电压和直流信号。