Control circuit for lossless switching converter
    1.
    发明申请
    Control circuit for lossless switching converter 有权
    无损开关转换器控制电路

    公开(公告)号:US20070153553A1

    公开(公告)日:2007-07-05

    申请号:US11323627

    申请日:2005-12-30

    IPC分类号: H02M3/335

    摘要: A DC-to-DC converter comprises a converter section and a controller section. The converter section comprises a primary section and a secondary section. The primary and secondary section includes MOSFET switches. The controller section is coupled to the converter section and comprises a pulse width modulation (PWM) section and a delay section. The PWM section comprises an error amplifier configured to generate an error signal representative of a variance between an output voltage of the converter section and a reference voltage and a PWM configured to produce a PWM signal based on the error signal. The delay section comprises of delay circuits configured to generate delayed output signals from the PWM signal and power switching device drivers coupled to the delay circuits and configured to receive the delay output signals and generate a controlled signals to control the on/off state of the MOSFET switches.

    摘要翻译: DC-DC转换器包括转换器部分和控制器部分。 转换器部分包括初级部分和次级部分。 初级和次级部分包括MOSFET开关。 控制器部分耦合到转换器部分,并且包括脉宽调制(PWM)部分和延迟部分。 PWM部分包括误差放大器,其被配置为产生代表转换器部分的输出电压和参考电压之间的差异的误差信号,以及配置为基于误差信号产生PWM信号的PWM。 延迟部分包括被配置为从PWM信号产生延迟的输出信号的延迟电路和耦合到延迟电路的功率开关器件驱动器,并且被配置为接收延迟输出信号并产生受控信号以控制MOSFET的导通/截止状态 开关。

    Circuitry and method for limiting peak current from a voltage source
    2.
    发明申请
    Circuitry and method for limiting peak current from a voltage source 失效
    限制来自电压源的峰值电流的电路和方法

    公开(公告)号:US20070182389A1

    公开(公告)日:2007-08-09

    申请号:US11349369

    申请日:2006-02-06

    申请人: George Cebry

    发明人: George Cebry

    IPC分类号: G05F1/573

    CPC分类号: G05F1/573 Y10S323/908

    摘要: Circuitry (20) and a method are provided for limiting peak current while supplying a constant voltage to a load (42). The circuit (20) comprises an input terminal (32) for coupling to the voltage supply, current sense circuitry (26) coupled to the input terminal (32), a capacitor (30) coupled to an output terminal (40), a converter power stage (22) coupled between the current sense circuitry (26) and the output terminal (40); and a converter controller (24) having inputs coupled to the output terminal (40) and the current sense circuitry (26), and an output coupled to the converter power stage (22) for switching the converter power stage (22) from a voltage mode to a current mode.

    摘要翻译: 提供电路(20)和一种用于限制峰值电流同时向负载(42)提供恒定电压的方法。 电路(20)包括用于耦合到电压源的输入端子(32),耦合到输入端子(32)的电流检测电路(26),耦合到输出端子(40)的电容器(30) 功率级(22)耦合在电流检测电路(26)和输出端(40)之间; 以及转换器控制器(24),其具有耦合到所述输出端子(40)和所述电流感测电路(26)的输入,以及耦合到所述转换器功率级(22)的输出,用于将所述转换器功率级(22)从电压 模式切换到当前模式。

    DC-DC converter having synchronous rectification without cross conduction
    3.
    发明申请
    DC-DC converter having synchronous rectification without cross conduction 有权
    DC-DC转换器具有无交叉导通的同步整流

    公开(公告)号:US20070097714A1

    公开(公告)日:2007-05-03

    申请号:US11264067

    申请日:2005-10-31

    申请人: George Cebry

    发明人: George Cebry

    IPC分类号: H02M3/335

    摘要: An apparatus (54) is provided for preventing cross conduction in a synchronous rectifier of a DC-DC converter (10). The DC-DC converter has an input MOSFET switch (26) coupled to primary windings (22) of an isolation transformer (20), an output MOSFET switch (30) coupled to secondary windings (24) of the isolation transformer, and a complementary output MOSFET switch (34) coupled to an output terminal (14). A synchronous rectifier timing circuit (54) comprises a first timing output signal circuit (62) responsive to a pulse width modulated signal for providing first and second timing output signals (55, 56) that switches low at time t1 and high at time t4 to control the input MOSFET switch and output MOSFET switch, respectively, and a second timing output signal circuit (64) responsive to the pulse width modulated signal for providing a third timing output signal (58) that switches high at time t2 and low at time t3 to control the complementary output MOSFET switch.

    摘要翻译: 提供一种用于防止DC-DC转换器(10)的同步整流器中的交叉传导的装置(54)。 DC-DC转换器具有耦合到隔离变压器(20)的初级绕组(22)的输入MOSFET开关(26),耦合到隔离变压器的次级绕组(24)的输出MOSFET开关(30) 输出MOSFET开关(34),其耦合到输出端子(14)。 同步整流器定时电路(54)包括响应于脉冲宽度调制信号的第一定时输出信号电路(62),用于提供第一和第二定时输出信号(55,56),其在时间t 1为低电平,在时间t为高电平 4分别控制输入MOSFET开关和输出MOSFET开关,以及响应于脉宽调制信号的第二定时输出信号电路(64),用于提供在时间t 2和低电平时切换高电平的第三定时输出信号(58) 在时间t 3控制互补输出MOSFET开关。

    Timing control circuit for lossless switching converter
    4.
    发明申请
    Timing control circuit for lossless switching converter 有权
    无损切换转换器定时控制电路

    公开(公告)号:US20070076458A1

    公开(公告)日:2007-04-05

    申请号:US11239881

    申请日:2005-09-30

    申请人: George Cebry

    发明人: George Cebry

    IPC分类号: H02M7/5387

    CPC分类号: H02M7/5387

    摘要: A timing control circuit (70) generates staggered signals from a pulse width modulated signal (68) providing lossless switching in a DC to DC power converter (10). The DC to DC power converter (10) comprises two input MOSFET switches (22, 28) coupled to primary windings (34) of an isolation transformer (36) and two output MOSFET switches (38, 50) coupled to secondary windings (48) of the isolation transformer. The timing circuit (70) comprises an input terminal (90) for receiving a pulse width modulated signal (68) that switches low at time t1 and high at time t4. A first timing output signal circuit (92) is responsive to the pulse width modulated signal (68) and provides a first timing output signal (72) that switches low at time t1 and high at time t7 to control one of the input MOSFET switches (22). A second timing output signal circuit (94) is responsive to the pulse width modulated signal (68) and provides a second timing output signal (76) that switches high at time t3 and low at time t6 to control the other input MOSFET switch (28). A third timing output signal circuit (96) is responsive to the pulse width modulated signal (68) and provides a third timing output signal (82) that switches low at time t2 and high at time t5 to control one of the output MOSFET switches (50). A fourth timing output signal circuit (98) is responsive to the pulse width modulated signal (68) and provides a fourth timing output signal (86) that switches high at time t2 and low at time t8 to control the other of the output MOSFET switches (38). The times t1 through t8 occur in sequence.

    摘要翻译: 定时控制电路(70)从DC至DC电力转换器(10)中产生无脉冲开关的脉冲宽度调制信号(68)产生交错信号。 DC至DC功率转换器(10)包括耦合到隔离变压器(36)的初级绕组(34)的两个输入MOSFET开关(22,28)和耦合到次级绕组(48)的两个输出MOSFET开关(38,50) 的隔离变压器。 定时电路(70)包括一个输入端(90),用于接收时间t 1为低电平的时间调制信号(68),并在时间t 4为高电平。 第一定时输出信号电路(92)响应于脉宽调制信号(68)并提供在时间t 1为低电平的第一定时输出信号(72),并且在时间t 7为高电平,以控制输入MOSFET 开关(22)。 第二定时输出信号电路(94)响应于脉宽调制信号(68)并提供在时间t 3为高电平的第二定时输出信号(76),并且在时间t 6为低电平,以控制另一个输入MOSFET开关 (28)。 第三定时输出信号电路(96)响应于脉宽调制信号(68)并提供在时间t 2处切换低电平的第三定时输出信号(82),并且在时间t 5处提供高电平,以控制输出MOSFET 开关(50)。 第四定时输出信号电路(98)响应于脉宽调制信号(68),并提供在时间t 2为高电平的第四定时输出信号(86),在时间t 8为低电平,以控制另一个输出 MOSFET开关(38)。 时间t 1到t 8按顺序发生。

    SINGLE FAULT TOLERANT ISOLATED DUAL BUS POWER INPUT CIRCUITS AND SYSTEMS
    5.
    发明申请
    SINGLE FAULT TOLERANT ISOLATED DUAL BUS POWER INPUT CIRCUITS AND SYSTEMS 审中-公开
    单个故障容错隔离双总线功率输入电路和系统

    公开(公告)号:US20100109440A1

    公开(公告)日:2010-05-06

    申请号:US12263370

    申请日:2008-10-31

    IPC分类号: H02J1/00

    CPC分类号: H03K17/08 Y10T307/685

    摘要: Single fault tolerant isolated dual bus power input circuits and systems are provided. One input circuit comprises a first bus and a second bus configured to be coupled to first and second power sources, respectively. The first bus includes first input and return lines, the first input or return line including a switch. The second bus includes second input and return lines, the second input or return line including two switches coupled in series. A system includes multiple power sources coupled to an electronic device via the input circuit discussed above. Another system includes multiple power sources, an electronic device, and an input circuit coupling the electronic device to the power sources. The input circuit includes multiple input lines coupling the electronic device to a respective power source, wherein each input line includes a switch coupled between the electronic device and each respective power source.

    摘要翻译: 提供单一容错隔离双总线电源输入电路和系统。 一个输入电路包括分别耦合到第一和第二电源的第一总线和第二总线。 第一个总线包括第一个输入和返回线,第一个输入或返回线包括开关。 第二总线包括第二输入和返回线,第二输入或返回线包括串联耦合的两个开关。 系统包括经由上述输入电路耦合到电子设备的多个电源。 另一系统包括多个电源,电子设备和将电子设备耦合到电源的输入电路。 输入电路包括将电子设备耦合到相应电源的多个输入线,其中每个输入线包括耦合在电子设备和每个相应电源之间的开关。

    Control circuit for isolated forward DC-to-DC converters
    6.
    发明申请
    Control circuit for isolated forward DC-to-DC converters 有权
    用于隔离正向DC-DC转换器的控制电路

    公开(公告)号:US20070115698A1

    公开(公告)日:2007-05-24

    申请号:US11286365

    申请日:2005-11-23

    申请人: George Cebry

    发明人: George Cebry

    IPC分类号: H02M3/335

    CPC分类号: H02M3/33523

    摘要: An isolated DC-to-DC converter comprises a converter section configured to receive an input voltage and produce an isolated output voltage and a controller section configured to control the operation of the converter section to maintain the output voltage at a predetermined value by, at least in part, turning switches on and off at a certain duty cycle at a set switching frequency. The controller section comprises an isolation transformer providing primary and secondary side isolation and an error amplifier having an output coupled to the isolation transformer, the error amplifier providing an error signal that is representative of the difference between an output voltage and a desired output voltage. The converter further comprises an isolation driver coupled to an isolation driver switch, the isolation driver operable to turn on and off the isolation driver switch at the same frequency as the converter section, the switching of the isolation driver switch resulting in the error signal becoming an amplitude modulated error signal that is transferred across the isolation transformer.

    摘要翻译: 隔离DC-DC转换器包括被配置为接收输入电压并产生隔离输出电压的转换器部分和控制器部分,其被配置为控制转换器部分的操作以将输出电压维持在预定值,至少 部分地,以设定的开关频率在特定占空比下接通和断开开关。 控制器部分包括提供初级和次级侧隔离的隔离变压器和具有耦合到隔离变压器的输出的误差放大器,误差放大器提供代表输出电压和期望输出电压之间的差的误差信号。 转换器还包括耦合到隔离驱动器开关的隔离驱动器,隔离驱动器可操作以以与转换器部分相同的频率接通和断开隔离驱动器开关,隔离驱动器开关的切换导致误差信号变为 经过隔离变压器传输的幅度调制误差信号。