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公开(公告)号：US20100328968A1
公开(公告)日：2010-12-30
申请号：US12820549
申请日：2010-06-22
IPC分类号： H02M3/335
CPC分类号： H02M3/33569 , H02M3/335 , Y02B70/1433
摘要： A PWM controlled 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.
摘要翻译： PWM控制的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的初级绕组的多个次级绕组。 主或次级绕组可以连接成使得实际或虚拟中性点浮动。
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公开(公告)号：US09780678B2
公开(公告)日：2017-10-03
申请号：US12820549
申请日：2010-06-22
IPC分类号： H02M3/335
CPC分类号： H02M3/33569 , H02M3/335 , Y02B70/1433
摘要： A PWM controlled 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.
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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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4.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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5.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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公开(公告)号：US20090152949A1
公开(公告)日：2009-06-18
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：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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9.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：US06424549B1
公开(公告)日：2002-07-23
申请号：US09916185
申请日：2001-07-26
IPC分类号： H02M542
CPC分类号： H02M1/4225 , H02J2009/007 , H02M2001/0032 , H02M2001/007 , Y02B70/126 , Y02B70/16 , Y02P80/112
摘要： A converter that is directly connectable to an AC power source (e.g., the mains) includes a rectifier stage for rectifying a network voltage, a power factor correction pre-regulating circuit supplied with the rectified network voltage for producing a DC voltage of a predetermined nominal value on an output node, and a DC-DC converter. The DC-DC converter may be supplied on an input node thereof with the DC voltage of the predetermined nominal value for producing a regulated DC voltage on an output node thereof. The DC-DC converter may use a clock whose frequency is selected between at least one low and one high value by a selection signal. Furthermore, the converter may also include a stand-by circuit for producing the selection signal based upon the current delivered to the load.
摘要翻译： 可直接连接到AC电源（例如电源）的转换器包括用于整流网络电压的整流器级，提供有整流网络电压的功率因数校正预调电路，用于产生预定标称的直流电压 输出节点上的值，以及DC-DC转换器。 DC-DC转换器可以在其输入节点上提供具有预定标称值的DC电压，以在其输出节点上产生稳定的DC电压。 DC-DC转换器可以使用通过选择信号在至少一个低值和一个高值之间选择频率的时钟。 此外，转换器还可以包括用于基于传送到负载的电流产生选择信号的备用电路。
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