公开(公告)号：US10205397B2

公开(公告)日：2019-02-12

申请号：US14796204

申请日：2015-07-10

Applicant: Ionel Jitaru

Inventor： Ionel Jitaru

IPC: H02M3/335 ,  H02M1/00

Abstract: A method is shown to create soft transition in selected topologies by controlling and designing a current pulse injection in front of the output choke to overwhelm the output current at a certain point in the switching cycle.

公开(公告)号：US20180241299A1

公开(公告)日：2018-08-23

申请号：US15825647

申请日：2017-11-29

Applicant: Ionel Jitaru

Inventor： Ionel Jitaru

IPC: H02M1/08 ,  H02M3/335

CPC classification number: H02M1/083 ,  H01F38/42 ,  H02M1/4258 ,  H02M3/155 ,  H02M3/335 ,  H02M3/33553 ,  H02M3/33592 ,  H02M2001/0058 ,  H02M2001/342 ,  Y02B70/126 ,  Y02B70/1433 ,  Y02B70/1475 ,  Y02B70/1491

Abstract: In this invention we introduce the concept of energy injection in a resonant circuit with initial conditions which is part of almost all of the present topologies. The patent will present in details several methods of energy injection in a resonant circuit with initial conditions and how it is applies to different topologies. The patent presents also a simple and economical method of driving the clamp switch in a flyback topology operating in discontinuous mode and a bias circuit in a flyback topology wherein the output voltage varies over a large range.

公开(公告)号：US20150256087A1

公开(公告)日：2015-09-10

申请号：US14535993

申请日：2014-11-07

Applicant: Ionel Jitaru

Inventor： Ionel Jitaru

IPC: H02M3/335

CPC classification number: H02M3/33546 ,  H01F3/14 ,  H01F2027/408 ,  H02M3/33592 ,  H02M2001/0058 ,  Y02B70/1475 ,  Y02B70/1491

Abstract: A design and control method is shown to create soft transition in dual transformer half bridge or full bridge topology by controlling the magnetizing current in both transformers to cross zero level and allows soft switching on all the switching elements.

Abstract translation: 显示了一种设计和控制方法，通过将两个变压器的励磁电流控制为零电平，允许所有开关元件的软开关，从而在双变压器半桥或全桥拓扑中产生软转换。

公开(公告)号：US20130314188A1

公开(公告)日：2013-11-28

申请号：US13887345

申请日：2013-05-05

Applicant: Ionel Jitaru ,  Marco Antonio Davila ,  Andrei Savu ,  Andrei Ion Radulescu

Inventor： Ionel Jitaru ,  Marco Antonio Davila ,  Andrei Savu ,  Andrei Ion Radulescu

IPC: H01F38/14

CPC classification number: H01F38/14 ,  H01F3/10 ,  H01F27/346 ,  H01F2003/005

Abstract: New and Useful magnetic structures are provided. One feature of the magnetic structures is that they are configured to help minimize the air gap reluctance, improving the magnetic structure's coupling coefficient. Another feature is that reducing the windings AC impedance of a magnetic structure is produced by shielding the winding under ears formed of magnetic material. Still another feature is that leakage inductance of a magnetic structure is reduced, by making ears with cuts which converge toward the magnetic rods that are used in the formation of the structure.

Abstract translation: 提供了新的和有用的磁性结构。 磁结构的一个特征是它们被配置为帮助最小化气隙磁阻，改善磁结构的耦合系数。 另一个特征是通过屏蔽由磁性材料形成的耳朵下面的绕组来产生减小磁性结构的绕组AC阻抗。 另一个特征是，通过用形成结构的磁棒聚集的切口来形成磁结构的漏电感。

公开(公告)号：US06980074B1

公开(公告)日：2005-12-27

申请号：US09434985

申请日：1999-11-05

Applicant: Ionel Jitaru

Inventor： Ionel Jitaru

IPC: H01F27/28 ,  H05K1/00 ,  H05K1/16 ,  H01F5/00

CPC classification number: H05K1/165 ,  H01F27/2804 ,  H05K1/0298 ,  H05K2201/086 ,  H05K2201/09063 ,  H05K2201/10166

Abstract: A multilayer structure in which all the magnetic elements have the windings edged in the inner layers and the magnetic core which surrounds the winding has the legs penetrating through the multilayer structure. The interconnection between the magnetic elements and the rest of electronic components is done through the layers of the multilayer board, horizontally and vertically through via. For higher power components special cuts are performed in the multilayer board to accommodate the body of the components which may be connected to an external heatsink. The winding arrangement in the transformer is done in a such way to minimize and even eliminate the common mode noise injected through the capacitance between primary and secondary winding. The input filter is constructed to exhibit a differential and a common mode impedance. Supplementary capacitors are incorporated in the multilayers structure to offer a low impedance to the noise to short it to the source, or for injecting currents of opposite polarity to cancel the common mode current transferred through the transformer's inter winding capacitance and through the parasitic capacitance of the switching elements to the secondary. The insulation between winding can be in accordance with the safety agency requirements, allowing much shorter creapage distances inside of the multilayer PCB structure than in the air due to the compliance with coating environment.

Abstract translation: 其中所有磁性元件具有在内层中缠绕的绕组和围绕绕组的磁芯的多层结构具有贯穿多层结构的脚。 磁性元件和其余电子部件之间的互连通过多层板的层，通过通孔水平和垂直地完成。 对于较高功率组件，在多层板中执行特殊切割以容纳可连接到外部散热器的部件的主体。 变压器中的绕组布置以最小化甚至消除通过初级绕组和次级绕组之间的电容注入的共模噪声的方式完成。 输入滤波器被构造为呈现差分和共模阻抗。 辅助电容器被并入多层结构中，以提供低噪声阻抗以将其短路到源极，或者用于注入相反极性的电流以消除通过变压器的互绕电容传输的共模电流，并通过变压器的互绕电容 开关元件到次级。 绕组之间的绝缘可以根据安全机构的要求，由于符合涂层环境，允许多层PCB结构内的折叠距离比空气中短。

公开(公告)号：US20050254266A1

公开(公告)日：2005-11-17

申请号：US10509983

申请日：2003-03-28

Applicant: Ionel Jitaru

Inventor： Ionel Jitaru

IPC: H02M3/335

CPC classification number: H02M3/33523 ,  H02M3/33592 ,  Y02B70/1475

Abstract: The present invention is directed to a switch mode power converter for supplying an output power to a load, which includes a switching device having a switching input, a switching output, and a control input for enabling or disabling the switching device from conducting current from the switching input to the switching output. The converter also includes a network in which the switching device input, the switching device output, and the load are connected together to form a circuit. The converter also includes a bias winding in the circuit for producing a bias voltage representative of the output power, and a control circuit. The control circuit is for (a) determining the rate of change of the bias voltage, (b) characterizing the rate of change, and (c) controlling the control input as a result of the characterization (b).

Abstract translation: 本发明涉及一种用于向负载提供输出功率的开关模式功率转换器，该开关模式功率转换器包括具有开关输入，开关输出和控制输入的开关器件，用于使能或禁用开关器件从 切换输入到切换输出。 转换器还包括其中开关器件输入，开关器件输出和负载连接在一起以形成电路的网络。 转换器还包括用于产生表示输出功率的偏置电压的电路中的偏置绕组和控制电路。 控制电路用于（a）确定偏置电压的变化率，（b）表征变化率，以及（c）作为表征结果控制控制输入（b）。

公开(公告)号：US20050128774A1

公开(公告)日：2005-06-16

申请号：US10499850

申请日：2002-12-20

Applicant: Ionel Jitaru

Inventor： Ionel Jitaru

IPC: H02M1/34 ,  H02M3/335

CPC classification number: H02M1/34 ,  H02M3/33569 ,  H02M2001/342 ,  Y02B70/1491

Abstract: A power device such as a forward converter employing a main switch in series with a power transformer coupling an input, primary circuit and an output, secondary circuit has its transformer reset from a reset capacitor that is switched. Switching of the reset capacitor is effected by a reset switch, preferably a MOSFET, the control electrode of which is driven from a reset winding on the power transformer. Current flow between the reset capacitor and the primary winding resets the transformer. The capacitor can be chosen such that flux density in the transformer core is substantially symmetrical about zero. Leakage and magnetizing conductance energy is recycled. Large spikes are not produced across the main switch.

Abstract translation: 诸如正向转换器的功率器件采用与耦合输入，初级电路和输出的电力变压器串联的主开关，其二次电路的变压器由切换的复位电容器复位。 复位电容器的切换由复位开关，优选MOSFET，其控制电极从电源变压器上的复位绕组驱动。 复位电容和初级绕组之间的电流将复位变压器。 可以选择电容器，使得变压器磁芯中的磁通密度基本上约为零对称。 泄漏和磁化电导能被回收利用。 主开关不产生大尖峰。

公开(公告)号：US06731523B2

公开(公告)日：2004-05-04

申请号：US09737500

申请日：2000-12-13

Applicant: Ionel Jitaru

Inventor： Ionel Jitaru

IPC: H02M723

CPC classification number: H02J1/102 ,  H01F27/06 ,  H02M7/003 ,  H05K1/0204 ,  H05K1/165 ,  H05K2201/086 ,  H05K2201/09063 ,  H05K2201/10166 ,  H05K2201/10416

Abstract: A modular power supply. A plurality of power supply modules and a system control circuit for controlling the power supply modules are provided. Each power supply module has a power circuit coupled to a power input of the module for receiving an input power current and produces an output power current at a power output of the module. The power circuits each include at least one switching element for switching the input power current or the output power current of a module. The power circuits further include a control circuit input that is coupled directly to the respective said switching device. The system control circuit includes a control circuit output bus for connecting to the control circuit inputs of each of the power modules and provides a respective signal to each module for directly controlling the respective switching devices.

Abstract translation: 模块化电源。 提供了多个电源模块和用于控制电源模块的系统控制电路。 每个电源模块具有耦合到模块的功率输入的电源电路，用于接收输入电力电流并在模块的功率输出处产生输出功率电流。 电源电路各自包括用于切换模块的输入功率电流或输出功率电流的至少一个开关元件。 电源电路还包括直接耦合到相应的所述开关装置的控制电路输入端。 系统控制电路包括用于连接到每个电源模块的控制电路输入端的控制电路输出总线，并向每个模块提供相应的信号，以直接控制各个开关装置。

公开(公告)号：US06380727B1

公开(公告)日：2002-04-30

申请号：US09113794

申请日：1998-07-03

Applicant: Ionel Jitaru

Inventor： Ionel Jitaru

IPC: G01R3300

CPC classification number: G01R15/148 ,  G01R15/181

Abstract: A current sensing cell, using PCB trace-loops, with the loops either contained in a single layer—horizontal loops, or in two separate layers—vertical loops interconnected by vias into a single two-pole inductive component. The horizontal loop-sensor cell will be used sideways, next to a planar conductor carrying a current parallel to the sensor traces, so as to collect the magnetic field lines on the side of the planar conductor, where they come closer together. The vertical loop sensor cell will be used on top or bottom of a planar conductor carrying current parallel to the cell, so as to collect the magnetic field lines going across the conductor, or between two parallel conductors, carrying parallel current of opposite sense, so as to collect the magnetic field lines that run in between the two conductors, summing up the two fields.

Abstract translation: 使用PCB走线循环的电流感测单元，其环路包含在单层水平环路中，或者包含在两个独立的层中 - 垂直环路通过通孔互连成单个两极电感分量。 水平环路传感器单元将在侧面使用，旁边是平行导体，其平行于传感器迹线流动，以便在平面导体的侧面收集磁场线，在那里它们靠近在一起。 垂直环路传感器单元将用于承载平行于电池的电流的平面导体的顶部或底部，以便收集穿过导体或两个平行导体之间的磁场线，并携带具有相反意义的平行电流，因此 为了收集在两个导体之间运行的磁场线，将两个场相加。

公开(公告)号：US5990776A

公开(公告)日：1999-11-23

申请号：US351943

申请日：1994-12-08

Applicant: Ionel Jitaru

Inventor： Ionel Jitaru

IPC: H01F27/28 ,  H05K1/00 ,  H05K1/16 ,  H01F5/00

CPC classification number: H05K1/165 ,  H01F27/2804 ,  H05K1/0298 ,  H05K2201/086 ,  H05K2201/09063 ,  H05K2201/10166

Abstract: A multilayers structure in which all the magnetic elements have the windings edged in the inner layers and the magnetic core which surrounds the winding has the legs penetrating through the multilayers structure. The interconnection between the magnetic elements and the rest of electronic components are done through the layers of the multilayers board, horizontally and vertically through vias. For higher power components special cuts are performed in the multilayers board to accommodate the body of the components which may be connected to an external heatsink. The winding arrangement in the transformer is done in a such way to minimize and even eliminate the common mode noise injected through the capacitance between primary and secondary winding. The input filter is constructed to exhibit a differential and a common mode impedance. Supplementary capacitors are incorporated in the multilayers structure to offer a low impedance to the noise to short it to the source, or for injecting currents of opposite polarity to cancel the common mode current transferred through the transformer's inter winding capacitance and through the parasitic capacitance of the switching elements to the secondary. The insulation between winding can be in accordance with the safety agency requirements, allowing much shorter creapage distances inside of the multilayers PCB structure than in the air due to the compliance with coating environment.

Abstract translation: 一种多层结构，其中所有磁性元件具有在内层中缠绕的绕组，并且围绕绕组的磁芯具有贯穿多层结构的腿。 磁性元件和其余电子部件之间的互连通过多层板的层，通过通孔水平和垂直地完成。 对于较高功率部件，在多层板中执行特殊切割以容纳可连接到外部散热器的部件的主体。 变压器中的绕组布置以最小化甚至消除通过初级绕组和次级绕组之间的电容注入的共模噪声的方式完成。 输入滤波器被构造为呈现差分和共模阻抗。 辅助电容器被并入多层结构中，以提供低噪声阻抗以将其短路到源极，或者用于注入相反极性的电流以消除通过变压器的互绕电容传输的共模电流，并通过变压器的互绕电容 开关元件到次级。 绕组之间的绝缘可以根据安全机构的要求，由于符合涂层环境，允许多层PCB结构内的折叠距离比空气中短。