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1.发明授权Control of the output power of a DC-DC converter upon varying the switching frequency 失效改变开关频率时控制DC-DC转换器的输出功率
公开(公告)号：US6011706A
公开(公告)日：2000-01-04
申请号：US55639
申请日：1998-04-06
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。
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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。
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3.发明授权公开(公告)号：US07239120B2
公开(公告)日：2007-07-03
申请号：US11255074
申请日：2005-10-20
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。
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4.发明申请公开(公告)号：US20060103364A1
公开(公告)日：2006-05-18
申请号：US11255074
申请日：2005-10-20
IPC分类号： G05F1/40
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。
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公开(公告)号：US06370042B2
公开(公告)日：2002-04-09
申请号：US09805452
申请日：2001-03-13
IPC分类号： H02M3335
CPC分类号： H02M3/335 , Y10S323/901
摘要： A self-disabling and self-recovering converter includes a transformer connected to a power source and has an auxiliary winding for providing a self-supply voltage after start-up, and an integrated circuit having circuitry and a plurality of pins connected thereto. The converter also includes at least one external line and a sensor connected thereto for an electrical or physical quantity to be monitored. The at least one external line is biased through a first pin with the self-supply voltage, and is functionally coupled to a second pin when a threshold is surpassed. A sectionable voltage clamp chain is connected between the auxiliary winding and a voltage reference. A self-recovery circuit having a first input is connected to the auxiliary winding and a second input is connected through the second pin to the at least one external line. An output of the self-recovery circuit is connected to the sectionable voltage clamp chain for sectioning a portion thereof to the voltage reference for self-supplying the integrated circuit.
摘要翻译： 一种自发电和自恢复转换器包括连接到电源的变压器，并且具有用于在启动之后提供自供电电压的辅助绕组，以及具有连接到其上的电路和多个引脚的集成电路。 转换器还包括至少一个外部线路和连接到其上的传感器，用于要监控的电气或物理量。 所述至少一个外部线路通过具有自供电电压的第一引脚偏置，并且当阈值被超过时功能上耦合到第二引脚。 辅助绕组和参考电压之间连接有一个可分段电压钳链。 具有第一输入的自恢复电路连接到辅助绕组，并且第二输入端通过第二引脚连接到至少一个外部线路。 自恢复电路的输出端连接到可分段电压钳位链，用于将其一部分分割成用于自供电的集成电路的电压基准。
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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
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。
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公开(公告)号：US08604643B2
公开(公告)日：2013-12-10
申请号：US12336185
申请日：2008-12-16
IPC分类号： H02J1/00
CPC分类号： H02M3/1584 , H02J1/102 , H02M2001/0048 , Y02B70/1491 , Y10T307/406 , Y10T307/555 , Y10T307/707
摘要： A control device of a plurality of switching converters is disclosed; each converter comprises at least one power switch and is associated with a control circuit of the at least one power switch. The control device comprises means suitable for comparing a signal representative of the load of the plurality of converters with a plurality of reference signals and suitable for enabling or disabling at least one of said plurality of control circuits in response to said comparison.
摘要翻译： 公开了一种多个开关变换器的控制装置， 每个转换器包括至少一个电源开关并与所述至少一个电源开关的控制电路相关联。 控制装置包括适于将表示多个转换器的负载的信号与多个参考信号进行比较的装置，并且适合于响应于所述比较启用或禁用所述多个控制电路中的至少一个。
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8.发明授权公开(公告)号：US07279876B2
公开(公告)日：2007-10-09
申请号：US10877439
申请日：2004-06-25
IPC分类号： G05F1/40
CPC分类号： H02M1/4225 , G05F1/70 , Y02B70/126
摘要： A device is provided for the correction of the power factor in forced switching power supplies. The device includes a converter, and a first control circuit coupled with the converter so as to obtain a regulated voltage on the output terminal from an alternating network input voltage. The converter includes a power transistor, and the first control circuit is suitable for driving the power transistor in every switching cycle comprising the turn-on time and the turn-off time of the power transistor. The device for the correction of the power factor further includes a second control circuit coupled to the first control circuit and capable of modulating the turn-off time of the power transistor.
摘要翻译： 提供了用于校正强制开关电源中的功率因数的装置。 该装置包括转换器和与转换器耦合的第一控制电路，以便从交替的网络输入电压获得输出端上的调节电压。 该转换器包括功率晶体管，并且第一控制电路适于在包括功率晶体管的接通时间和关断时间的每个开关周期中驱动功率晶体管。 用于校正功率因数的装置还包括耦合到第一控制电路并且能够调制功率晶体管的关断时间的第二控制电路。
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9.发明授权Circuit for reducing the variations of auto-supply voltage of a control circuit of a switching power supply 有权用于减小开关电源的控制电路的自动电源电压的变化的电路公开(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。
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10.发明申请Circuit for Reducing the Variations of Auto-Supply Voltage of a Control Circuit of a Switching Power Supply 有权用于降低开关电源的控制电路的自动供电电压变化的电路公开(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。
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