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1. 发明授权

US08149597B2 Intermediate bus architecture with a quasi-regulated bus converter 有权
标题翻译：具有准调节总线转换器的中间总线架构
公开(公告)号：US08149597B2
公开(公告)日：2012-04-03
申请号：US12870326
申请日：2010-08-27
申请人： Richard W. Farrington , Martin F. Schlecht
发明人： Richard W. Farrington , Martin F. Schlecht
IPC分类号： H02M3/335
CPC分类号： H02M3/33592 , H02M2001/008 , Y02B70/1475 , Y10T307/406
摘要： A dc-dc converter system comprises a quasi-regulated bus converter and plural regulation stages that regulate the output of the bus converter. The bus converter has at least one controlled rectifier with a parallel uncontrolled rectifier. A control circuit controls the controlled rectifier to cause a normally non-regulated mode of operation through a portion of an operating range of source voltage and a regulated output during another portion. The bus converter may be an isolation stage having primary and secondary transformer winding circuits. For the non-regulated output, each primary winding has a voltage waveform with a fixed duty cycle. The fixed duty cycle causes substantially uninterrupted flow of power during non-regulated operation. Inductors at the bus converter input and in a filter at the output of the bus converter may saturate during non-regulated operation.
摘要翻译：一个dc-dc转换器系统包括准调节总线转换器和多个调节总线转换器输出的调节级。总线转换器具有至少一个具有并联不可控整流器的受控整流器。控制电路控制可控整流器通过源电压的工作范围的一部分和另一部分的稳压输出引起正常的非调节工作模式。总线转换器可以是具有初级和次级变压器绕组电路的隔离级。对于非稳压输出，每个初级绕组具有固定占空比的电压波形。固定占空比在非调节操作期间导致基本上不间断的电力流动。在总线转换器输入端和总线转换器输出端的滤波器中的电感器可能在非调节操作期间饱和。

2. 发明申请

US20110176333A1 Power Converter with Isolated and Regulation Stages 审中-公开
标题翻译：电源转换器，具有隔离和调节级
公开(公告)号：US20110176333A1
公开(公告)日：2011-07-21
申请号：US12907188
申请日：2010-10-19
申请人： Martin F. Schlecht , Richard W. Farrington
发明人： Martin F. Schlecht , Richard W. Farrington
IPC分类号： H02M3/335
CPC分类号： H02M3/33561 , H02M3/33592 , Y02B70/1475
摘要： In a power converter, the duty cycle of a primary winding circuit causes near continuous flow of power through the primary and secondary winding circuits during normal operation. By providing no regulation during normal operation, a very efficient circuit is obtained with a synchronous rectifier in the secondary operating at all times. However, during certain conditions such as start up or a short-circuit, the duty cycle of the primary may be reduced to cause freewheeling periods. A normally non-regulating isolation stage may be followed by plural non-isolating regulation stages. To simplify the gate drive, the synchronous rectifiers may be allowed to turn off for a portion of the cycle when the duty cycle is reduced. A filter inductance of the secondary winding circuit is sufficient to minimize ripple during normal operation, but allows large ripple when the duty cycle is reduced. By accepting large ripple during other than normal operation, a smaller filter inductance can be used.
摘要翻译：在功率转换器中，初级绕组电路的占空比在正常工作期间通过初级绕组电路和次级绕组电路产生近乎连续的电力流动。通过在正常工作期间不提供调节，在二次操作中始终可以使用同步整流器获得非常有效的电路。然而，在诸如启动或短路的某些条件下，初级的占空比可以减小以产生续流周期。正常非调节隔离阶段之后可以是多个非隔离调节阶段。为了简化栅极驱动，当占空比减小时，同步整流器可以被允许关闭周期的一部分。次级绕组电路的滤波电感足以在正常工作期间最小化纹波，但是当占空比减小时允许较大的纹波。通过在正常工作以外接受大的纹波，可以使用较小的滤波电感。

3. 发明申请

US20130058133A1 Intermediate Bus Architecture with a Quasi-Regulated Bus Converter 审中-公开
标题翻译：具有准调节总线转换器的中间总线架构
公开(公告)号：US20130058133A1
公开(公告)日：2013-03-07
申请号：US13435679
申请日：2012-03-30
申请人： Richard W. Farrington , Martin F. Schlecht
发明人： Richard W. Farrington , Martin F. Schlecht
IPC分类号： H02M3/335
CPC分类号： H02M3/33592 , H02M2001/008 , Y02B70/1475 , Y10T307/406
摘要： A dc-dc converter system comprises a quasi-regulated bus converter and plural regulation stages that regulate the output of the bus converter. The bus converter has at least one controlled rectifier with a parallel uncontrolled rectifier. A control circuit controls the controlled rectifier to cause a normally non-regulated mode of operation through a portion of an operating range of source voltage and a regulated output during another portion. The bus converter may be an isolation stage having primary and secondary transformer winding circuits. For the non-regulated output, each primary winding has a voltage waveform with a fixed duty cycle. The fixed duty cycle causes substantially uninterrupted flow of power during non-regulated operation. Inductors at the bus converter input and in a filter at the output of the bus converter may saturate during non-regulated operation.
摘要翻译：一个dc-dc转换器系统包括准调节总线转换器和多个调节总线转换器输出的调节级。总线转换器具有至少一个具有并联不可控整流器的受控整流器。控制电路控制可控整流器通过源电压的工作范围的一部分和另一部分的稳压输出引起正常的非调节工作模式。总线转换器可以是具有初级和次级变压器绕组电路的隔离级。对于非稳压输出，每个初级绕组具有固定占空比的电压波形。固定占空比在非调节操作期间导致基本上不间断的电力流动。在总线转换器输入端和总线转换器输出端的滤波器中的电感器可能在非调节操作期间饱和。

4. 发明授权

US07787261B2 Intermediate bus architecture with a quasi-regulated bus converter 有权
标题翻译：具有准调节总线转换器的中间总线架构
公开(公告)号：US07787261B2
公开(公告)日：2010-08-31
申请号：US11982327
申请日：2007-11-01
申请人： Richard W. Farrington , Martin F. Schlecht
发明人： Richard W. Farrington , Martin F. Schlecht
IPC分类号： H02M3/335
CPC分类号： H02M3/33592 , H02M2001/008 , Y02B70/1475 , Y10T307/406
摘要： A dc-dc converter system comprises a quasi-regulated bus converter and plural regulation stages that regulate the output of the bus converter. The bus converter has at least one controlled rectifier with a parallel uncontrolled rectifier. A control circuit controls the controlled rectifier to cause a normally non-regulated mode of operation through a portion of an operating range of source voltage and a regulated output during another portion. The bus converter may be an isolation stage having primary and secondary transformer winding circuits. For the non-regulated output, each primary winding has a voltage waveform with a fixed duty cycle. The fixed duty cycle causes substantially uninterrupted flow of power during non-regulated operation. Inductors at the bus converter input and in a filter at the output of the bus converter may saturate during non-regulated operation.
摘要翻译：一个dc-dc转换器系统包括准调节总线转换器和多个调节总线转换器输出的调节级。总线转换器具有至少一个具有并联不可控整流器的受控整流器。控制电路控制可控整流器通过源电压的工作范围的一部分和另一部分的稳压输出引起正常的非调节工作模式。总线转换器可以是具有初级和次级变压器绕组电路的隔离级。对于非稳压输出，每个初级绕组具有固定占空比的电压波形。固定占空比在非调节操作期间导致基本上不间断的电力流动。在总线转换器输入端和总线转换器输出端的滤波器中的电感器可能在非调节操作期间饱和。

5. 发明授权

US07272021B2 Power converter with isolated and regulated stages 有权
标题翻译：电源转换器具有隔离和调节级
公开(公告)号：US07272021B2
公开(公告)日：2007-09-18
申请号：US11407699
申请日：2006-04-20
申请人： Martin F. Schlecht , Richard W. Farrington
发明人： Martin F. Schlecht , Richard W. Farrington
IPC分类号： H02M3/335
CPC分类号： H02M3/33561 , H02M3/33592 , Y02B70/1475
摘要： In a power converter, the duty cycle of a primary winding circuit causes near continuous flow of power through the primary and secondary winding circuits during normal operation. By providing no regulation during normal operation, a very efficient circuit is obtained with a synchronous rectifier in the secondary operating at all times. However, during certain conditions such as start up or a short-circuit, the duty cycle of the primary may be reduced to cause freewheeling periods. A normally non-regulating isolation stage may be followed by plural non-isolating regulation stages. To simplify the gate drive, the synchronous rectifiers may be allowed to turn off for a portion of the cycle when the duty cycle is reduced. A filter inductance of the secondary winding circuit is sufficient to minimize ripple during normal operation, but allows large ripple when the duty cycle is reduced. By accepting large ripple during other than normal operation, a smaller filter inductance can be used.
摘要翻译：在功率转换器中，初级绕组电路的占空比在正常工作期间通过初级绕组电路和次级绕组电路产生近乎连续的电力流动。通过在正常工作期间不提供调节，在二次操作中始终可以使用同步整流器获得非常有效的电路。然而，在诸如启动或短路的某些条件下，初级的占空比可以减小以产生续流周期。正常非调节隔离阶段之后可以是多个非隔离调节阶段。为了简化栅极驱动，当占空比减小时，同步整流器可以被允许关闭周期的一部分。次级绕组电路的滤波电感足以在正常工作期间最小化纹波，但是当占空比减小时允许较大的纹波。通过在正常工作以外接受大的纹波，可以使用较小的滤波电感。

6. 发明申请

US20110187191A1 Intermediate Bus Architecture with a Quasi-Regulated Bus Converter 有权
标题翻译：具有准调节总线转换器的中间总线架构
公开(公告)号：US20110187191A1
公开(公告)日：2011-08-04
申请号：US12870326
申请日：2010-08-27
申请人： Richard W. Farrington , Martin F. Schlecht
发明人： Richard W. Farrington , Martin F. Schlecht
IPC分类号： H02M3/335 , H02M3/00
CPC分类号： H02M3/33592 , H02M2001/008 , Y02B70/1475 , Y10T307/406
摘要： A dc-dc converter system comprises a quasi-regulated bus converter and plural regulation stages that regulate the output of the bus converter. The bus converter has at least one controlled rectifier with a parallel uncontrolled rectifier. A control circuit controls the controlled rectifier to cause a normally non-regulated mode of operation through a portion of an operating range of source voltage and a regulated output during another portion. The bus converter may be an isolation stage having primary and secondary transformer winding circuits. For the non-regulated output, each primary winding has a voltage waveform with a fixed duty cycle. The fixed duty cycle causes substantially uninterrupted flow of power during non-regulated operation. Inductors at the bus converter input and in a filter at the output of the bus converter may saturate during non-regulated operation.
摘要翻译：一个dc-dc转换器系统包括准调节总线转换器和多个调节总线转换器输出的调节级。总线转换器具有至少一个具有并联不可控整流器的受控整流器。控制电路控制可控整流器通过源电压的工作范围的一部分和另一部分的稳压输出引起正常的非调节工作模式。总线转换器可以是具有初级和次级变压器绕组电路的隔离级。对于非稳压输出，每个初级绕组具有固定占空比的电压波形。固定占空比在非调节操作期间导致基本上不间断的电力流动。在总线转换器输入端和总线转换器输出端的滤波器中的电感器可能在非调节操作期间饱和。

7. 发明申请

US20080211304A1 Intermediate bus architecture with a quasi-regulated bus converter 有权
标题翻译：具有准调节总线转换器的中间总线架构
公开(公告)号：US20080211304A1
公开(公告)日：2008-09-04
申请号：US11982327
申请日：2007-11-01
申请人： Richard W. Farrington , Martin F. Schlecht
发明人： Richard W. Farrington , Martin F. Schlecht
IPC分类号： H02J1/00 , H02M3/00
CPC分类号： H02M3/33592 , H02M2001/008 , Y02B70/1475 , Y10T307/406
摘要： A dc-dc converter system comprises a quasi-regulated bus converter and plural regulation stages that regulate the output of the bus converter. The bus converter has at least one controlled rectifier with a parallel uncontrolled rectifier. A control circuit controls the controlled rectifier to cause a normally non-regulated mode of operation through a portion of an operating range of source voltage and a regulated output during another portion. The bus converter may be an isolation stage having primary and secondary transformer winding circuits. For the non-regulated output, each primary winding has a voltage waveform with a fixed duty cycle. The fixed duty cycle causes substantially uninterrupted flow of power during non-regulated operation. Inductors at the bus converter input and in a filter at the output of the bus converter may saturate during non-regulated operation.
摘要翻译：一个dc-dc转换器系统包括准调节总线转换器和多个调节总线转换器输出的调节级。总线转换器具有至少一个具有并联不可控整流器的受控整流器。控制电路控制可控整流器通过源电压的工作范围的一部分和另一部分的稳压输出引起正常的非调节工作模式。总线转换器可以是具有初级和次级变压器绕组电路的隔离级。对于非稳压输出，每个初级绕组具有固定占空比的电压波形。固定占空比在非调节操作期间导致基本上不间断的电力流动。在总线转换器输入端和总线转换器输出端的滤波器中的电感器可能在非调节操作期间饱和。

8. 发明申请

US20080175024A1 Power converter with isolated and regulation stages 审中-公开
标题翻译：电源转换器具有隔离和调节级
公开(公告)号：US20080175024A1
公开(公告)日：2008-07-24
申请号：US11901241
申请日：2007-09-14
申请人： Martin F. Schlecht , Richard W. Farrington
发明人： Martin F. Schlecht , Richard W. Farrington
IPC分类号： H02M3/00
CPC分类号： H02M3/33561 , H02M3/33592 , Y02B70/1475
摘要： In a power converter, the duty cycle of a primary winding circuit causes near continuous flow of power through the primary and secondary winding circuits during normal operation. By providing no regulation during normal operation, a very efficient circuit is obtained with a synchronous rectifier in the secondary operating at all times. However, during certain conditions such as start up or a short-circuit, the duty cycle of the primary may be reduced to cause freewheeling periods. A normally non-regulating isolation stage may be followed by plural non-isolating regulation stages. To simplify the gate drive, the synchronous rectifiers may be allowed to turn off for a portion of the cycle when the duty cycle is reduced. A filter inductance of the secondary winding circuit is sufficient to minimize ripple during normal operation, but allows large ripple when the duty cycle is reduced. By accepting large ripple during other than normal operation, a smaller filter inductance can be used.
摘要翻译：在功率转换器中，初级绕组电路的占空比在正常工作期间通过初级绕组电路和次级绕组电路产生近乎连续的电力流动。通过在正常工作期间不提供调节，在二次操作中始终可以使用同步整流器获得非常有效的电路。然而，在诸如启动或短路的某些条件下，初级的占空比可以减小以产生续流周期。正常非调节隔离阶段之后可以是多个非隔离调节阶段。为了简化栅极驱动，当占空比减小时，同步整流器可以被允许关闭周期的一部分。次级绕组电路的滤波电感足以在正常工作期间最小化纹波，但是当占空比减小时允许较大的纹波。通过在正常工作以外接受大的纹波，可以使用较小的滤波电感。

9. 发明授权

US5912549A Current mode controller for continuous conduction mode power factor correction circuit and method of operation thereof 失效
标题翻译：连续导通模式功率因数校正电路的电流模式控制器及其操作方法
公开(公告)号：US5912549A
公开(公告)日：1999-06-15
申请号：US905105
申请日：1997-08-01
申请人： Richard W. Farrington , William P. Gardiner , Mark E. Jacobs , Hengchun Mao
发明人： Richard W. Farrington , William P. Gardiner , Mark E. Jacobs , Hengchun Mao
IPC分类号： H02M1/00 , H02M1/42 , G05F1/70
CPC分类号： H02M1/4225 , Y02B70/126 , Y02P80/112
摘要： For use with a power factor correction circuit, a current mode controller, a method of operating current mode control to achieve power factor correction thereof and a power supply incorporating the controller or the method. In one embodiment, the controller includes: (1) a modulator, coupled to a switch in the power factor correction circuit, that senses an electrical characteristic and a current passing through the power factor correction circuit and provides, in response thereto, a control signal to the switch and (2) a compensation circuit, coupled to an input of the power factor correction circuit, that provides a compensation signal to the modulator that is a function of a rectified line voltage provided to the input of the power factor correction circuit. The compensation signal causes the modulator to modify the control signal to reduce a total harmonic distortion (THD) of the power factor correction circuit.
摘要翻译：用于功率因数校正电路，电流模式控制器，操作电流模式控制以实现其功率因数校正的方法和结合该控制器或方法的电源。在一个实施例中，控制器包括：（1）耦合到功率因数校正电路中的开关的调制器，其感测通过功率因数校正电路的电特性和电流，并响应于此提供控制信号和（2）补偿电路，其耦合到功率因数校正电路的输入，该补偿电路为调制器提供补偿信号，该补偿信号是提供给功率因数校正电路的输入的整流线电压的函数。补偿信号使调制器修改控制信号，以降低功率因数校正电路的总谐波失真（THD）。

10. 发明授权

US5883793A Clamp circuit for a power converter and method of operation thereof 失效
标题翻译：一种功率转换器的钳位电路及其操作方法
公开(公告)号：US5883793A
公开(公告)日：1999-03-16
申请号：US69909
申请日：1998-04-30
申请人： Richard W. Farrington
发明人： Richard W. Farrington
IPC分类号： H02M3/335
CPC分类号： H02M3/33569
摘要： For use with a power converter having first and second power switches coupled between a converter input and a primary winding of a transformer to impress an input voltage across the primary winding, a voltage clamp circuit for, and method of, resetting the transformer and a power converter employing the clamp circuit or the method. In one embodiment, the clamp circuit includes: (1) first and second reset windings coupled between the first and second power switches, (2) first and second energy storage devices coupled between the primary winding and the first and second reset windings, respectively, and (3) first and second switching circuits, coupled to the first reset winding and the second reset winding, respectively, that provide an electrical path from the primary winding to the converter input through the first and second reset windings, respectively, when the first and second power switches are not conducting.
摘要翻译：为了与功率转换器一起使用，该功率转换器具有耦合在变压器输入端和变压器的初级绕组之间的第一和第二功率开关，以在一次绕组上施加输入电压，用于复位变压器的电压钳位电路和复位方法以及功率转换器采用钳位电路或方法。在一个实施例中，钳位电路包括：（1）耦合在第一和第二功率开关之间的第一和第二复位绕组，（2）分别耦合在初级绕组和第一和第二复位绕组之间的第一和第二能量存储装置，和（3）分别耦合到第一复位绕组和第二复位绕组的第一和第二开关电路，当第一和第二开关电路分别通过第一和第二复位绕组提供从初级绕组到转换器输入的电路，并且第二电源开关不导通。

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