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1. 发明授权

US07304867B2 DC-DC converter of multi-output type 失效
标题翻译：多输出型DC-DC转换器
公开(公告)号：US07304867B2
公开(公告)日：2007-12-04
申请号：US11330811
申请日：2006-01-12
申请人： Hiroshi Usui
发明人： Hiroshi Usui
IPC分类号： H02M7/08 , H02H3/335 , H01F27/28
CPC分类号： H02M3/33561 , H02M2001/008
摘要： A DC-DC converter of multi-output type is provided wherein a primary winding 5a is wound around core halves 5g, 5h of a transformer 5 between first and second secondary windings 5b, 5c of transformer 5 also concentrically wound around core halves 5g, 5h to form an electromagnetic sparse coupling between first and second secondary windings 5b, 5c. When on-off operation of first and second primary MOS-FETs 2, 3 generates first and second DC outputs VO1, VO2, the electromagnetic sparse coupling can reduce, attenuate or relax serge voltage induced on first secondary winding 5b. This restrains or controls potential increase in first output voltage VO1 resulted from serge voltage through first rectifying smoother 9 under the light- or no-load condition to control fluctuation in second output voltage VO2 through second rectifying smoother 17 without restricting transmission of electric power from the primary to the secondary side making use of feedback control to primary control circuit 14 in order to generate stable first and second DC output voltages VO1 and VO2 throughout the entire loaded and unloaded range.
摘要翻译：提供了一种多输出型的DC-DC转换器，其中初级绕组5a被缠绕在磁芯半部5g上，变压器5的5h在变压器5的第一和第二次级绕组5b，5c之间也同心地缠绕芯半部5g，5h，以形成第一和第二次级绕组5b，5c之间的电磁稀疏耦合。当第一和第二主要MOS场效应晶体管2,3的开关操作产生第一和第二直流输出V O1，V O2时，电磁稀疏耦合可以减小，衰减或放松在第一次级绕组5b上感应的钳位电压。这抑制或控制在光或无负载条件下通过第一整流平滑器9的脉冲电压产生的第一输出电压V O1 的潜在增加，以控制第二输出电压V O2的波动， / SUB>通过第二整流平滑器17，而不是通过使用对主控制电路14的反馈控制来限制从初级到次级侧的电力传输，以便产生稳定的第一和第二DC输出电压V O1

2. 发明授权

US07099161B2 Converter with synchronous rectifier with ZVS 有权
标题翻译：带ZVS同步整流器的变换器
公开(公告)号：US07099161B2
公开(公告)日：2006-08-29
申请号：US10858243
申请日：2004-06-01
申请人： Chao Yan , Hao-Yi Ye , Hong-Yang Wu , Jian-Hong Zeng , Jian-Ping Ying
发明人： Chao Yan , Hao-Yi Ye , Hong-Yang Wu , Jian-Hong Zeng , Jian-Ping Ying
IPC分类号： H02H3/335
CPC分类号： H02M3/33592 , Y02B70/1475
摘要： A control method for a first synchronous rectifier and a second synchronous rectifier in a switching power converter is presented. The switching power converter includes a transformer, and a first switching device and a second switching device connected in series and in parallel with an input voltage source. The first synchronous rectifier is connected with a low end of a secondary winding of the transformer. The second synchronous rectifier is connected with a high end of the secondary winding of said transformer. The first switching device is connected with a high end of the input voltage source, and the second switching device is connected with a low end of the input voltage source. The control includes the steps of driving the first switching device to an on state and the second switching device to an off state; and driving the second synchronous rectifier to an off state after the second switching device has been driven to an on state, such that a power is delivered from the primary winding to the secondary winding.
摘要翻译：提出了一种开关电源转换器中的第一同步整流器和第二同步整流器的控制方法。开关电源转换器包括变压器以及与输入电压源串联并联连接的第一开关器件和第二开关器件。第一同步整流器与变压器次级绕组的低端连接。第二同步整流器与所述变压器的次级绕组的高端连接。第一开关装置与输入电压源的高端连接，第二开关装置与输入电压源的低端连接。该控制包括以下步骤：将第一开关装置驱动为导通状态，将第二开关装置切换到断开状态; 并且在所述第二开关装置被驱动到接通状态之后将所述第二同步整流器驱动到截止状态，使得从所述初级绕组向次级绕组输送功率。

3. 发明授权

US5883795A 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：US5883795A
公开(公告)日：1999-03-16
申请号：US67525
申请日：1998-04-28
申请人： Richard W. Farrington
发明人： Richard W. Farrington
IPC分类号： H02M3/335 , H02H3/335
CPC分类号： H02M3/33538
摘要： For use with a power converter couplable to a source of electrical power and having a power switch coupled to a primary and tertiary winding of a transformer, the power switch capable of impressing an input voltage (Vin) across the primary winding and a duty cycle (D) of the power switch limited by a voltage applied to reset the transformer, a clamp circuit and method of increasing an efficiency of the power converter. In one embodiment, the clamp circuit includes: (1) first and second storage devices coupled between the primary and tertiary windings and (2) a switching circuit, coupled between the first and second storage devices, that selectively couples the first and second storage devices in a parallel configuration when the power switch is conducting and in a series configuration when the power switch is not conducting, thereby increasing the voltage to reset the transformer and increasing the duty cycle (D) to improve an efficiency of the power converter.
摘要翻译：为了与功率转换器耦合到功率源并且具有耦合到变压器的初级和三级绕组的功率开关的功率转换器能够在初级绕组上施加输入电压（Vin）并且占空比（ D）由施加于复位变压器的电压所限制的电源开关，钳位电路和提高功率转换器效率的方法。在一个实施例中，钳位电路包括：（1）耦合在主绕组和第三绕组之间的第一和第二存储装置和（2）耦合在第一和第二存储装置之间的开关电路，其选择性地耦合第一和第二存储装置在电源开关导通时处于并联配置，并且当电源开关不导通时处于串联配置，从而增加电压以复位变压器并增加占空比（D）以提高功率转换器的效率。

4. 发明授权

US5289359A DC-DC power converter including sensing means for providing an output when the reserve power of the converter falls below a predetermined amount for a given input voltage 失效
标题翻译： DC-DC电力转换器包括用于当给定输入电压下降转换器的备用功率低于预定量时提供输出的感测装置
公开(公告)号：US5289359A
公开(公告)日：1994-02-22
申请号：US869875
申请日：1992-04-16
申请人： Mark S. Ziermann
发明人： Mark S. Ziermann
IPC分类号： H02M3/335 , H04M19/08 , H02H3/335 , H04M19/00
CPC分类号： H02M3/33507 , H04M19/08 , H02M2001/009
摘要： A DC to DC power converter in the form of a pulse-width modulator is shown which can sense via an indication of duty cycle how much reserve power is available for loads using the present input voltage. The device is for use at the end of a telephone line where the input voltage power supply impedance can be appreciable. When the reserve power, as detected in the power converter, reaches a minimum critical level, a signal is sent out requesting the voltage supply to increase the available voltage to the power converter.
摘要翻译：示出了脉冲宽度调制器形式的DC到DC功率转换器，其可以通过占空比的指示来感测使用当前输入电压的负载的可用功率多少。该设备在电话线的末端使用，其中输入电压电源阻抗可以是明显的。当在功率转换器中检测到的备用电源达到最小临界电平时，发出请求电压供应的信号以增加对电力转换器的可用电压。

5. 发明授权

US07480156B1 Tapped inductor power conversion networks 有权
标题翻译：抽头电感电源转换网络
公开(公告)号：US07480156B1
公开(公告)日：2009-01-20
申请号：US11620341
申请日：2007-01-05
申请人： Ernest Henry Wittenbreder, Jr.
发明人： Ernest Henry Wittenbreder, Jr.
IPC分类号： H02H3/335
CPC分类号： H02M3/158
摘要： The subject invention reveals new three terminal tapped inductor canonical cells for non-isolated power conversion. The canonical cells achieve reduced semiconductor component stresses for applications with limited line voltage range for small step up and step down ratios or for large step up and step down ratios. Some of the canonical cells can be used to form buck, boost, and buck boost converters. Another of the canonical cells is a member of the SEPIC family which can both step up and step down or operate in all four quadrants. Related canonical cells which achieve zero voltage switching and improved electromagnetic compatibility are also revealed. A new more robust floating gate drive control circuit is revealed which operates without magnetic components, without optical coupling, and without high voltage semiconductors is revealed.
摘要翻译：本发明揭示了用于非隔离功率转换的新的三端抽头电感规范单元。典型的电池实现了半导体元件应力降低，适用于具有有限线路电压范围的应用，用于小的升压和降压比或大的升压和降压比。一些典型的电池可用于形成降压，升压和降压升压转换器。另一个典型的电池是SEPIC家族的成员，它们可以在所有四个象限中升级和降压或操作。还揭示了实现零电压切换和改善的电磁兼容性的相关规范电池。揭示了一种新的更稳健的浮栅驱动控制电路，无需光耦合即可运行，无磁耦合，无显示高电压半导体。

6. 发明授权

US5307256A Trickle charge circuit for an off-line switching power supply 失效
标题翻译：用于离线开关电源的涓流充电电路
公开(公告)号：US5307256A
公开(公告)日：1994-04-26
申请号：US991766
申请日：1992-12-17
申请人： Robert A. Silverstein
发明人： Robert A. Silverstein
IPC分类号： H02H7/12 , H02H3/335
CPC分类号： H02H7/1213
摘要： The invention relates to a switching power supply having a protection device to shutdown the supply of the output voltage and a circuit for providing a trickle voltage while the power supply is shutdown. The power supply is shutdown by lowering the primary bias voltage, the voltage which powers the internal components of the power supply, to a value which disables the production of the output voltage. However, the primary bias voltage is not reduced to ground. Various circuits and devices, such as a restart circuit, may then be powered by the trickle voltage while the power supply is shutdown.
摘要翻译：本发明涉及一种开关电源，其具有用于关闭输出电压的供应的保护装置和用于在电源关闭时提供涓流电压的电路。通过降低将偏置电压（将电源的内部组件供电的电压）降低到禁止输出电压产生的值来关闭电源。然而，初级偏置电压不会降低到接地。然后，在电源关闭时，诸如重启电路的各种电路和装置可以由涓流电压供电。

7. 发明授权

US5285366A Current limit circuit in current mode power supplies 失效
标题翻译：电流模式电源中的限流电路
公开(公告)号：US5285366A
公开(公告)日：1994-02-08
申请号：US950240
申请日：1992-09-24
申请人： Boris Zaretsky
发明人： Boris Zaretsky
IPC分类号： H02H7/12 , H02H7/122 , H02H3/335
CPC分类号： H02H7/1213
摘要： A current mode power supply having a switching topology with a pulse width modulated duty cycle with a current sensing resistor is short circuit protected by a current limit circuit. The current limit circuit has inputs coupled to the current sensing resistor and the dc source input. The current limit circuit provide an output signal connected to the pulse width modulator, for shortening the duty cycle in dependence upon the sum of voltage signals from the current sensing resistor and the dc source input.
摘要翻译：具有电流检测电阻器的具有脉冲宽度调制占空比的开关拓扑的电流模式电源被限流电路短路保护。电流限制电路具有耦合到电流检测电阻和直流电源输入的输入。电流限制电路提供连接到脉冲宽度调制器的输出信号，用于根据来自电流感测电阻器和直流电源输入的电压信号的总和缩短占空比。

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