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1.发明申请公开(公告)号：US20090267658A1
公开(公告)日：2009-10-29
申请号：US12361419
申请日：2009-01-28
IPC分类号： H03L7/00
CPC分类号： H02M3/1584 , H02M2003/1586
摘要： In an embodiment, a power converter system includes a plurality of variable frequency power converters and a plurality of synchronization circuits. Each variable frequency power converter has a switching frequency. Each synchronization circuit is associated with a respective one of the plurality of variable frequency power converters. A control circuit is coupled to and coordinates the plurality of synchronization circuits. The plurality of synchronization circuits and the control circuit are operable to synchronize the switching frequencies of the variable frequency power converters to each other. Each synchronization circuit is operable to: receive a first input signal indicative of the beginning of a switching period for the associated variable frequency power converter; receive a second input signal indicative of the end of the switching period for the associated variable frequency power converter; generate a first output signal for directing a pulse width modulation of the associated variable frequency power converter; and generate a second output signal for coordinating a phase relationship with another variable frequency power converter in the system.
摘要翻译： 在一个实施例中，功率转换器系统包括多个可变频率功率转换器和多个同步电路。 每个可变频率功率转换器具有开关频率。 每个同步电路与多个可变频率功率转换器中的相应一个相关联。 控制电路耦合到并协调多个同步电路。 多个同步电路和控制电路可操作以使可变频率功率转换器的开关频率彼此同步。 每个同步电路可操作为：接收指示相关联的可变频率功率转换器的开关周期开始的第一输入信号; 接收指示所述相关联的可变频率功率转换器的开关周期结束的第二输入信号; 产生用于引导所述相关联的可变频率功率转换器的脉冲宽度调制的第一输出信号; 并产生用于与系统中的另一变频功率转换器协调相位关系的第二输出信号。
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2.发明授权Synchronizing frequency and phase of multiple variable frequency power converters 有权同步多个变频电源转换器的频率和相位公开(公告)号：US07933132B2
公开(公告)日：2011-04-26
申请号：US12361419
申请日：2009-01-28
IPC分类号： H02M7/00
CPC分类号： H02M3/1584 , H02M2003/1586
摘要： In an embodiment, a power converter system includes a plurality of variable frequency power converters and a plurality of synchronization circuits. Each variable frequency power converter has a switching frequency. Each synchronization circuit is associated with a respective one of the plurality of variable frequency power converters. A control circuit is coupled to and coordinates the plurality of synchronization circuits. The plurality of synchronization circuits and the control circuit are operable to synchronize the switching frequencies of the variable frequency power converters to each other. Each synchronization circuit is operable to: receive a first input signal indicative of the beginning of a switching period for the associated variable frequency power converter; receive a second input signal indicative of the end of the switching period for the associated variable frequency power converter; generate a first output signal for directing a pulse width modulation of the associated variable frequency power converter; and generate a second output signal for coordinating a phase relationship with another variable frequency power converter in the system.
摘要翻译： 在一个实施例中，功率转换器系统包括多个可变频率功率转换器和多个同步电路。 每个可变频率功率转换器具有开关频率。 每个同步电路与多个可变频率功率转换器中的相应一个相关联。 控制电路耦合到并协调多个同步电路。 多个同步电路和控制电路可操作以使可变频率功率转换器的开关频率彼此同步。 每个同步电路可操作为：接收指示相关联的可变频率功率转换器的开关周期开始的第一输入信号; 接收指示所述相关联的可变频率功率转换器的开关周期结束的第二输入信号; 产生用于引导所述相关联的可变频率功率转换器的脉冲宽度调制的第一输出信号; 并产生用于与系统中的另一变频功率转换器协调相位关系的第二输出信号。
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3.发明授权Unique power supply architecture with cascaded converters for large input-to-output step-down ratio 有权具有级联转换器的独特电源架构，可实现大的输入/输出降压比公开(公告)号：US06246592B1
公开(公告)日：2001-06-12
申请号：US09598555
申请日：2000-06-21
IPC分类号： H02M3335
CPC分类号： H02M3/33592 , H02M2001/007 , Y02B70/1475
摘要： A power supply having a transformer-coupled power converter cascaded with a buck power converter. The transformer-coupled power converter operates in a free-running mode at a nearly 100% maximum duty cycle to convert an input voltage to an intermediate voltage. The buck power converter produces a regulated output voltage from the intermediate voltage. The power supply further includes a pulse width modulation (PWM) controller employing leading-edge modulation of complementary control signals used to control buck switches in the buck converter. The PWM controller is synchronized to primary-side free-running switches of the transformer-coupled power converter by a synchronization signal that is fed-forward across an isolation boundary via a signal transformer. The power supply also may also employ a soft-switching technique to reduce switching losses.
摘要翻译： 具有与降压功率转换器级联的变压器耦合功率转换器的电源。 变压器耦合功率转换器在自由运行模式下工作在几乎100％的最大占空比，将输入电压转换成中间电压。 降压功率转换器从中间电压产生稳定的输出电压。 电源还包括采用用于控制降压转换器中的降压开关的互补控制信号的前沿调制的脉宽调制（PWM）控制器。 PWM控制器通过同步信号与变压器耦合功率转换器的初级侧自由运行开关同步，该同步信号通过信号变压器跨越隔离边界。 电源还可以采用软切换技术来减少开关损耗。
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4.发明授权Synchronizing frequency and phase of multiple variable frequency power converters 有权同步多个变频电源转换器的频率和相位公开(公告)号：US08279645B2
公开(公告)日：2012-10-02
申请号：US13093629
申请日：2011-04-25
IPC分类号： H02M7/00
CPC分类号： H02M3/1584 , H02M2003/1586
摘要： In an embodiment, a power converter system includes a plurality of variable frequency power converters and a plurality of synchronization circuits. Each variable frequency power converter has a switching frequency. Each synchronization circuit is associated with a respective one of the plurality of variable frequency power converters. A control circuit is coupled to and coordinates the plurality of synchronization circuits. The plurality of synchronization circuits and the control circuit are operable to synchronize the switching frequencies of the variable frequency power converters to each other. Each synchronization circuit is operable to: receive a first input signal indicative of the beginning of a switching period for the associated variable frequency power converter; receive a second input signal indicative of the end of the switching period for the associated variable frequency power converter; generate a first output signal for directing a pulse width modulation of the associated variable frequency power converter; and generate a second output signal for coordinating a phase relationship with another variable frequency power converter in the system.
摘要翻译： 在一个实施例中，功率转换器系统包括多个可变频率功率转换器和多个同步电路。 每个可变频率功率转换器具有开关频率。 每个同步电路与多个可变频率功率转换器中的相应一个相关联。 控制电路耦合到并协调多个同步电路。 多个同步电路和控制电路可操作以使可变频率功率转换器的开关频率彼此同步。 每个同步电路可操作为：接收指示相关联的可变频率功率转换器的开关周期开始的第一输入信号; 接收指示所述相关联的可变频率功率转换器的开关周期结束的第二输入信号; 产生用于引导所述相关联的可变频率功率转换器的脉冲宽度调制的第一输出信号; 并产生用于与系统中的另一变频功率转换器协调相位关系的第二输出信号。
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5.发明申请公开(公告)号：US20110199797A1
公开(公告)日：2011-08-18
申请号：US13093629
申请日：2011-04-25
IPC分类号： H02M7/00
CPC分类号： H02M3/1584 , H02M2003/1586
摘要： In an embodiment, a power converter system includes a plurality of variable frequency power converters and a plurality of synchronization circuits. Each variable frequency power converter has a switching frequency. Each synchronization circuit is associated with a respective one of the plurality of variable frequency power converters. A control circuit is coupled to and coordinates the plurality of synchronization circuits. The plurality of synchronization circuits and the control circuit are operable to synchronize the switching frequencies of the variable frequency power converters to each other. Each synchronization circuit is operable to: receive a first input signal indicative of the beginning of a switching period for the associated variable frequency power converter; receive a second input signal indicative of the end of the switching period for the associated variable frequency power converter; generate a first output signal for directing a pulse width modulation of the associated variable frequency power converter; and generate a second output signal for coordinating a phase relationship with another variable frequency power converter in the system.
摘要翻译： 在一个实施例中，功率转换器系统包括多个可变频率功率转换器和多个同步电路。 每个可变频率功率转换器具有开关频率。 每个同步电路与多个可变频率功率转换器中的相应一个相关联。 控制电路耦合到并协调多个同步电路。 多个同步电路和控制电路可操作以使可变频率功率转换器的开关频率彼此同步。 每个同步电路可操作为：接收指示相关联的可变频率功率转换器的开关周期开始的第一输入信号; 接收指示所述相关联的可变频率功率转换器的开关周期结束的第二输入信号; 产生用于引导所述相关联的可变频率功率转换器的脉冲宽度调制的第一输出信号; 并产生用于与系统中的另一变频功率转换器协调相位关系的第二输出信号。
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公开(公告)号：US20110121806A1
公开(公告)日：2011-05-26
申请号：US12946458
申请日：2010-11-15
IPC分类号： G05F1/00
CPC分类号： H02M3/156
摘要： This document discusses, among other things, a regulator circuit. The regulator circuit can controllably connect a first voltage to an inductor using a first switch and can controllably connect a second voltage to the inductor using a second switch. The first switch can be turned off and the second switch can be turned on for a duration proportional to a difference between the first voltage and a third voltage, divided by the first voltage. The first switch can be turned off and the second switch can be turned on for a duration proportional to the third voltage divided by the first voltage. One of the first or third voltages can correspond to a desired output voltage.
摘要翻译： 本文件还讨论了一个调节器电路。 调节器电路可以使用第一开关可控地将第一电压连接到电感器，并且可以使用第二开关可控地将第二电压连接到电感器。 可以关闭第一开关，并且可以将第二开关打开一段持续时间，与第一电压和第三电压之间的差除以第一电压。 可以关闭第一开关，并且第二开关可以与第三电压除以第一电压成比例的持续时间导通。 第一或第三电压之一可以对应于期望的输出电压。
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公开(公告)号：US08618779B2
公开(公告)日：2013-12-31
申请号：US12946458
申请日：2010-11-15
IPC分类号： G05F1/59
CPC分类号： H02M3/156
摘要： This document discusses, among other things, a regulator circuit. The regulator circuit can controllably connect a first voltage to an inductor using a first switch and can controllably connect a second voltage to the inductor using a second switch. The first switch can be turned off and the second switch can be turned on for a duration proportional to a difference between the first voltage and a third voltage, divided by the first voltage. The first switch can be turned off and the second switch can be turned on for a duration proportional to the third voltage divided by the first voltage. One of the first or third voltages can correspond to a desired output voltage.
摘要翻译： 本文件还讨论了一个调节器电路。 调节器电路可以使用第一开关可控地将第一电压连接到电感器，并且可以使用第二开关可控地将第二电压连接到电感器。 可以关闭第一开关，并且可以将第二开关打开一段持续时间，与第一电压和第三电压之间的差除以第一电压。 可以关闭第一开关，并且第二开关可以与第三电压除以第一电压成比例的持续时间导通。 第一或第三电压之一可以对应于期望的输出电压。
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