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1.发明授权
公开(公告)号：US5986899A
公开(公告)日：1999-11-16
申请号：US266199
申请日：1999-03-10
IPC分类号： H02M3/335
CPC分类号： H02M3/33576 , H02M3/33592 , Y02B70/1475
摘要： A single ended forward DC-to-DC converter includes a transformer having a primary winding electrically connected to a primary switch and a secondary winding electrically connected to a secondary switch and a clamping capacitor. The clamping capacitor stores the magnetization energy from the secondary winding when the primary switch is turned off, thus causing the transformer core to be reset during the period that the primary switch remains off. The converter can use mosfets as the primary and secondary switches, such that a change in the voltage at the secondary winding of the transformer, due to the turning off of the primary switch, results in an automatic turning on of the secondary switch. The combination of the clamping capacitor and the mosfet switches increases the simplicity of the DC-to-DC converter while eliminating undesirable characteristics such as dead time and voltage stresses on the switches. The DC-to-DC converter of the present invention can be used to carry out synchronous rectification and zero voltage switching.
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2.发明授权
公开(公告)号：US5886881A
公开(公告)日：1999-03-23
申请号：US105511
申请日：1998-06-26
IPC分类号： H02M3/335
CPC分类号： H02M3/33576 , H02M3/33592 , Y02B70/1475
摘要： A single ended forward DC-to-DC converter includes a transformer having a primary winding electrically connected to a primary switch and a secondary winding electrically connected to a secondary switch and a clamping capacitor. The clamping capacitor stores the magnetization energy from the secondary winding when the primary switch is turned off, thus causing the transformer core to be reset during the period that the primary switch remains off. The converter can use mosfets as the primary and secondary switches, such that a change in the voltage at the secondary winding of the transformer, due to the turning off of the primary switch, results in an automatic turning on of the secondary switch. The combination of the clamping capacitor and the mosfet switches increases the simplicity of the DC-to-DC converter while eliminating undesirable characteristics such as dead time and voltage stresses on the switches. The DC-to-DC converter of the present invention can be used to carry out synchronous rectification and zero voltage switching.
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公开(公告)号：US5448155A
公开(公告)日：1995-09-05
申请号：US345535
申请日：1994-11-28
申请人： Mark A. Jutras
发明人： Mark A. Jutras
IPC分类号： G05F1/565
CPC分类号： G05F1/565
摘要： A regulated power source for supplying power to a circuit, the power source including a regulated power converter generating an output voltage for the circuit, the converter including a control terminal through which the output voltage can be regulated by feedback from the circuit; a monitoring circuit including a plurality of input terminals each of which monitors a voltage at a different location on the circuit, the monitoring circuit producing a control signal that is a function of all of the monitored voltages at the plurality of input terminals, the control signal driving the control terminal of the regulated power converter so as to regulate the output voltage to maintain the control signal at a constant value.
摘要翻译： 一种用于向电路供电的调节电源，所述电源包括产生所述电路的输出电压的稳压功率转换器，所述转换器包括控制端子，通过所述控制端子可以通过来自所述电路的反馈来调节所述输出电压; 监视电路，其包括多个输入端子，每个输入端子监视电路上不同位置处的电压，所述监控电路产生作为所述多个输入端子处的所有监视电压的函数的控制信号，所述控制信号 驱动稳压电源转换器的控制端，以便调节输出电压以将控制信号保持在恒定值。
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公开(公告)号：US6067241A
公开(公告)日：2000-05-23
申请号：US16074
申请日：1998-01-30
申请人： Qun Lu
发明人： Qun Lu
CPC分类号： H02M3/33561
摘要： A multi-output power supply having half-brick dimensions includes a forward converter circuit which receives a DC input voltage and in response to a first control signal generates a first DC output voltage at a first level; and a buck regulator circuit which receives the first DC output voltage from the forward converter circuit. In response to a second control signal, the buck regulator generates a second DC output voltage at a second level.
摘要翻译： 具有半砖尺寸的多输出电源包括正转换器电路，其接收DC输入电压，并且响应于第一控制信号产生第一电平的第一DC输出电压; 以及降压调节器电路，其从正激变换器电路接收第一直流输出电压。 响应于第二控制信号，降压调节器产生第二电平的第二直流输出电压。
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公开(公告)号：US5812387A
公开(公告)日：1998-09-22
申请号：US803980
申请日：1997-02-21
申请人： Qun Lu , Paul E. Grandmont , Shih-Chang Liu
发明人： Qun Lu , Paul E. Grandmont , Shih-Chang Liu
摘要： A multi-deck power converter module assembly for connection with a substrate (e.g., a host board) having connection regions disposed on its surface includes a second circuit board positioned over a first circuit board, the second circuit board having apertures extending from an upper surface to a lower surface of the second circuit board. At least two rail members are positioned over the second circuit board, each rail member having a first and a second plurality of holes. A pair of spacers are disposed between the first and second circuit boards, each spacer extending through one of the apertures of the second circuit board and received within one of the first plurality of holes of one of the rail members. Terminal pins are attached to the first circuit board, at least one terminal pin extending through the second circuit board and a corresponding one of the second plurality of holes for connection to one of the connection regions on the substrate. Each of the second plurality of holes is sized to allow the rail members to be slidably positioned over the terminal pins during assembly of the power converter module.
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6.发明授权
公开(公告)号：US5781420A
公开(公告)日：1998-07-14
申请号：US730684
申请日：1996-10-11
IPC分类号： H02M3/335
CPC分类号： H02M3/33576 , H02M3/33592 , Y02B70/1475
摘要： A single ended forward DC-to-DC converter includes a transformer having a primary winding electrically connected to a primary switch and a secondary winding electrically connected to a secondary switch and a clamping capacitor. The clamping capacitor stores the magnetization energy from the secondary winding when the primary switch is turned off, thus causing the transformer core to be reset during the period that the primary switch remains off. The converter can use mosfets as the primary and secondary switches, such that a change in the voltage at the secondary winding of the transformer, due to the turning off of the primary switch, results in an automatic turning on of the secondary switch. The combination of the clamping capacitor and the mosfet switches increases the simplicity of the DC-to-DC converter while eliminating undesirable characteristics such as dead time and voltage stresses on the switches. The DC-to-DC converter of the present invention can be used to carry out synchronous rectification and zero voltage switching.
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7.发明授权Single ended forward DC-to-DC converter providing enhanced resetting for synchronous rectification 有权单端正向DC-DC转换器，提供增强的同步整流复位
公开(公告)号：US6141224A
公开(公告)日：2000-10-31
申请号：US439748
申请日：1999-11-15
IPC分类号： H02M3/335
CPC分类号： H02M3/33576 , H02M3/33592 , Y02B70/1475
摘要： A single ended forward DC-to-DC converter includes a transformer having a primary winding electrically connected to a primary switch and a secondary winding electrically connected to a secondary switch and a clamping capacitor. The clamping capacitor stores the magnetization energy from the secondary winding when the primary switch is turned off, thus causing the transformer core to be reset during the period that the primary switch remains off. The converter can use mosfets as the primary and secondary switches, such that a change in the voltage at the secondary winding of the transformer, due to the turning off of the primary switch, results in an automatic turning on of the secondary switch. The combination of the clamping capacitor and the mosfet switches increases the simplicity of the DC-to-DC converter while eliminating undesirable characteristics such as dead time and voltage stresses on the switches. The DC-to-DC converter of the present invention can be used to carry out synchronous rectification and zero voltage switching.
摘要翻译： 单端正向DC-DC转换器包括具有与初级开关电连接的初级绕组的变压器和与次级开关和钳位电容器电连接的次级绕组。 当初级开关断开时，钳位电容器存储来自次级绕组的磁化能，从而在主开关保持断开的时段内使变压器芯复位。 转换器可以使用mosfet作为主要和次要开关，使得由于主开关的断开而导致的变压器次级绕组的电压变化导致二次开关的自动接通。 夹紧电容器和MOSFET开关的组合增加了DC-DC转换器的简单性，同时消除了不需要的特性，例如开关上的死区时间和电压应力。 本发明的DC-DC转换器可用于进行同步整流和零电压切换。
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公开(公告)号：US5949321A
公开(公告)日：1999-09-07
申请号：US114759
申请日：1998-07-14
申请人： Paul E. Grandmont , Qun Lu , Fei Ma
发明人： Paul E. Grandmont , Qun Lu , Fei Ma
CPC分类号： H01F27/2804 , H01F17/0006 , H01F41/041
摘要： A planar winding assembly includes first and second windings, each winding having an axis and a pair of insulative sheet layers, laminated together, with at least one of each of the pairs of insulative sheets having a hole. Each winding further includes a metal strip conductor that is wound about the axis of its winding and is sealed between the laminated insulative sheet layers. The metal strip conductor has a portion projecting into the hole. The metal strip conductor of the first winding is electrically connected to the metal strip conductor of the second winding through the holes of the insulative sheets.
摘要翻译： 平面绕组组件包括第一和第二绕组，每个绕组具有层叠在一起的轴线和一对绝缘片层，每对绝缘片中的至少一个具有孔。 每个绕组还包括围绕其绕组的轴线缠绕并被密封在层压绝缘片层之间的金属带状导体。 金属带状导体具有突出到孔中的部分。 第一绕组的金属带状导体通过绝缘片的孔电连接到第二绕组的金属带状导体。
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公开(公告)号：US5636107A
公开(公告)日：1997-06-03
申请号：US558175
申请日：1995-11-15
申请人： Qun Lu , Fei Ma , James J. Zeng
发明人： Qun Lu , Fei Ma , James J. Zeng
CPC分类号： H02M1/34 , H02M3/33576 , H02M2001/342 , Y02B70/1491
摘要： A DC--DC converter including a transformer having a primary winding and a tapped secondary winding; an output filter made up of a filter inductor and a filter capacitor connected in series with one side of the output filter connected to the tap terminal of the secondary winding; a first unidirectional device and a second unidirectional device connected in series with each other and with opposite polarities, there being a common node between them, the first unidirectional device electrically coupled to the first terminal of the secondary winding, the second unidirectional device electrically coupled to the second terminal of the secondary winding, and the output filter electrically coupled to the common node; a first switch connected in series with the primary winding; and a clamping circuit connected between two of the terminals of the secondary winding, wherein the clamping circuit includes a clamping capacitor connected in series with a second switch.
摘要翻译： 一种DC-DC转换器，包括具有初级绕组和抽头次级绕组的变压器; 由滤波电感器和滤波电容器组成的输出滤波器，该滤波电容器与输出滤波器的一侧串联连接到次级绕组的抽头端子; 第一单向装置和第二单向装置，其彼此串联并具有相反的极性，它们之间存在公共节点，第一单向装置电耦合到次级绕组的第一端子，第二单向装置电耦合到 所述次级绕组的第二端子和所述输出滤波器电耦合到所述公共节点; 与初级绕组串联连接的第一开关; 以及钳位电路，其连接在次级绕组的两个端子之间，其中钳位电路包括与第二开关串联连接的钳位电容器。
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公开(公告)号：US5933343A
公开(公告)日：1999-08-03
申请号：US158221
申请日：1998-09-22
申请人： Qun Lu , Paul E. Grandmont , Shih-Chang Liu
发明人： Qun Lu , Paul E. Grandmont , Shih-Chang Liu
摘要： A multi-deck power converter module assembly for connection with a substrate (e.g., a host board) having connection regions disposed on its surface includes a second circuit board positioned over a first circuit board, the second circuit board having apertures extending from an upper surface to a lower surface of the second circuit board. At least two rail members are positioned over the second circuit board, each rail member having a first and a second plurality of holes. A pair of spacers are disposed between the first and second circuit boards, each spacer extending through one of the apertures of the second circuit board and received within one of the first plurality of holes of one of the rail members. Terminal pins are attached to the first circuit board, at least one terminal pin extending through the second circuit board and a corresponding one of the second plurality of holes for connection to one of the connection regions on the substrate. Each of the second plurality of holes is sized to allow the rail members to be slidably positioned over the terminal pins during assembly of the power converter module.
摘要翻译： 用于与具有设置在其表面上的连接区域的基板（例如，主板）连接的多层电力转换器模块组件包括位于第一电路板上的第二电路板，第二电路板具有从上表面 到第二电路板的下表面。 至少两个轨道构件定位在第二电路板上方，每个轨道构件具有第一和第二多个孔。 一对间隔件设置在第一和第二电路板之间，每个间隔件延伸穿过第二电路板的一个孔并被接纳在一个轨道构件的第一多个孔中的一个孔内。 端子销附接到第一电路板，延伸穿过第二电路板的至少一个端子引脚和用于连接到基板上的一个连接区域的第二多个孔中的相应一个。 第二多个孔中的每一个的尺寸被设计成允许轨道构件在组装功率转换器模块期间可滑动地定位在端子销上方。
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