公开(公告)号：WO1995015609A1

公开(公告)日：1995-06-08

申请号：PCT/CH1993000286

申请日：1993-12-17

Applicant: MELCHER AG ,  MILAVEC, Johann ,  SPRINGETT, Nigel

Inventor： MELCHER AG

IPC: H02M03/24

CPC classification number: H02M3/28 ,  H01F19/04 ,  H01F27/28

Abstract: With modern-design DC/DC converters operated at high frequencies up to 500 kHz, the number of secondary windings required for the same high current has been lowered so that the necessary voltage can now be produced with only one or even less than one winding. The push-pull converter proposed has, for instance, a transformer with a centre-bar (19) and two outer limbs and includes on the secondary side two coils (29, 30) each of which consists of a single complete winding with central tap points (B, E). These windings are wound round the centre-bar (19) in such a way that the two tap points (B, E) lie opposite each other in two openings (18) between the outer limbs. The terminals (A, C) of the first coil (29) lie in the same opening (18) as the central tap point (E) of the second coil (30), and the terminals (D, F) of the second coil (30) lie in the other opening (18) in which the central tap point (B) of the first coil (29) lies.

Abstract translation: 在现代设计中，这是在高频率操作高达500 kHz的DC / DC转换器，需要次级绕组的数目的同时的高电流减小，使得与一个单一的，或大于必要的电压的一匝甚至更少可产生。 推挽转换器，例如，包括具有中心腿（19）和两个外部肢的变压器，其中包含在次级侧上的两个绕组（29,30）各由一个单一的整体转，每一个中心（B，E）的。 这些绕组被封装为围绕中间腿（19），这两个中心抽头（B，E）来外腿中的两个开口（18）彼此相对之间撒谎。 在相同的开口（18）为中间腿的一个绕组（30）的（E），所述端子（A，C）是其他绕组（29）的，并且在另一个开口（18），其中所述中心抽头 其他的（B）绕组（29），所述一个绕组（30）位于也端子（D，F）。

公开(公告)号：WO1986006226A1

公开(公告)日：1986-10-23

申请号：PCT/HU1985000053

申请日：1985-09-06

Applicant: KOVACS, Adám

IPC: H02M03/24

CPC classification number: H03K17/64 ,  H02M3/3385 ,  H03K17/04213 ,  H03K17/08146

Abstract: A circuit arrangement for generating high voltage pulses from DC voltage comprising a transformer, a secondary winding and at least two primary windings of said transformer, said primary windings at least one diode and a switching circuit are serial connected; said series circuit is connected to a voltage source, a capacitor is connected to the common terminal of said voltage source and of said primary windings, further said switching circuit is formed from the emitter-collector-section of a switching transistor, on the base of said switching transistor the output of a transistor amplifier is connected and the input of said transistor amplifier is coupled with the output of the control circuit. According to the invention the input (18) of said transistor amplifier (15) is formed from the base of a second transistor (30), between said input (18) and the output of said control circuit (16) two serial connected resistors (17a and 17b) are inserted, to the common terminal of both said resistors (17a and 17b) the emitter-collector-section of a first transistor (24) is connected, to the base of said first transistor (24) a voltage divider is connected, the branch (25) of which standing on the collector side is divided and connected to said voltage source (7), between the dividing point of said branch (25) and the common terminal of said primary winding (3) of said transformer (1) and of said switching transistor (14) a capacitor (26) is inserted, the resistor (27) of said voltage divider inserted on the emitter side is connected to a current control resistor (28), which is in series with the emitter-collector-circuit of said switching transistor (14).

Abstract translation: 一种用于从包括变压器，次级绕组和所述变压器的至少两个初级绕组的直流电压产生高压脉冲的电路装置，所述初级绕组至少一个二极管和开关电路串联连接; 所述串联电路连接到电压源，电容器连接到所述电压源和所述初级绕组的公共端，所述开关电路由开关晶体管的发射极 - 集电极部分形成，基底 所述开关晶体管连接晶体管放大器的输出，并且所述晶体管放大器的输入与控制电路的输出耦合。 根据本发明，所述晶体管放大器（15）的输入（18）由第二晶体管（30）的基极在所述输入端（18）和所述控制电路（16）的输出端之间形成两个串联电阻器 17a和17b）插入到两个所述电阻器（17a和17b）的公共端子，第一晶体管（24）的发射极 - 集电极部分连接到所述第一晶体管（24）的基极，分压器 在所述分支（25）的分割点与所述变压器的所述初级绕组（3）的公共端子之间分配并连接到所述电压源（7），所述分支（25） （1）和所述开关晶体管（14）插入电容器（26），所述分压器插入在发射极侧的电阻器（27）连接到电流控制电阻器（28），该电流控制电阻器 所述开关晶体管（14）的发射极 - 集电极电路。

公开(公告)号：WO1996023345A1

公开(公告)日：1996-08-01

申请号：PCT/US1996001637

申请日：1996-01-22

Applicant: MARS INCORPORATED

Inventor： MARS INCORPORATED ,  SIMPKINS, Joseph, A.

IPC: H02M03/24

CPC classification number: H02M3/33569

Abstract: A switching power supply (100) having a power steering clamp (116) is disclosed. The power supply (100) may suitably include a pulse width modulator controller which controls a first switch for controlling the flow of energy into and out of a transformer (120). The power steering clamp (116) suitably includes a second switch, clamp diodes, and circuitry for driving the gate of the second switch. The circuitry for driving the gate of the second switch is preferably controlled by the pulse width modulator controller. Use of the power steering clamp (116) permits leakage energy to be rerouted subsequently to the transformer. This feature may improve the efficiency of the circuit and also avoids the need for heat sinks to prevent overheating of circuit components. Such a switching power supply (100) is particularly suitable for use in high density devices, such as a banknote or bill in high density devices, such as a banknote or a bill validator.

Abstract translation: 公开了具有动力转向夹具（116）的开关电源（100）。 电源（100）可以适当地包括脉冲宽度调制器控制器，其控制用于控制进入和离开变压器（120）的能量流的第一开关。 动力转向夹具（116）适当地包括用于驱动第二开关的门的第二开关，钳位二极管和电路。 用于驱动第二开关的栅极的电路优选地由脉冲宽度调制器控制器控制。 动力转向夹具（116）的使用允许泄漏能量在变压器之后重新路由。 该特征可以提高电路的效率，并且还避免了散热器的需要以防止电路部件的过热。 这种开关电源（100）特别适用于诸如纸币或钞票验证器的高密度装置中的钞票或纸币等高密度装置。

公开(公告)号：WO1995016301A1

公开(公告)日：1995-06-15

申请号：PCT/US1994013956

申请日：1994-12-06

Applicant: INTERNATIONAL POWER SYSTEMS, INC.

Inventor： INTERNATIONAL POWER SYSTEMS, INC. ,  GOAD, Stephen, D.

IPC: H02M03/24

CPC classification number: H02J1/102 ,  H02M3/285 ,  Y10T307/707

Abstract: Decreased input and output ripple current and ripple voltage on a switched mode power conversion array (10) is realized at high power levels and frequencies by coupling an input power signal (12) across an input capacitance (16) to which a plurality of smaller power converter circuits (20(1)-20(N)) are coupled in parallel. Each of the converter circuits are operated in a phase shifted manner across the conversion frequency in a time overlapping relationship. For example, if there are N converters and the period of the conversion frequency is T, each circuit is triggered or switched at a phase shift corresponding to time increment of T/N delayed with respect to the preceding or subsequent converter. The output (14) of each of the converters is then coupled in parallel to an output capacitance. The operation of the converters is shown in the illustrated embodiment as being pulse width modulated to provide a regulated output.

Abstract translation: 通过将输入功率信号（12）耦合到多个较小功率的输入电容（16），在高功率电平和频率下实现开关模式功率转换阵列（10）上的输入和输出纹波电流和纹波电压的降低 转换器电路（20（1）-20（N））并联。 每个转换器电路在时间重叠关系中以相移方式跨转换频率操作。 例如，如果存在N个转换器并且转换频率的周期为T，则每个电路以对应于相对于先前或后续转换器延迟的T / N的时间增量的相移被触发或切换。 然后，每个转换器的输出（14）并联耦合到输出电容。 在所示实施例中，转换器的操作被示出为脉冲宽度调制以提供调节输出。

公开(公告)号：WO1993023915A1

公开(公告)日：1993-11-25

申请号：PCT/FI1993000210

申请日：1993-05-19

Applicant: NOKIA TELECOMMUNICATIONS OY ,  TUOMINEN, Matti

Inventor： NOKIA TELECOMMUNICATIONS OY

IPC: H02M03/24

CPC classification number: H02M3/33507 ,  G01R15/18 ,  G01R15/183 ,  G01R31/42 ,  H02M3/33576

Abstract: The invention relates to a voltage measuring circuit, especially for measuring the output voltage of a switched-mode power supply. According to the invention a first switching transistor (TR2) periodically switches the output voltage to a primary winding (W4) of a measuring transformer (T2). The induced secondary voltage of the transformer (T2) is rectified and switched to a control circuit by a second switching transistor (TR3). The first and second transistors are synchronized and exhibit a resistive voltage/current behaviour in a conducting state.

Abstract translation: 本发明涉及一种电压测量电路，特别是用于测量开关型电源的输出电压。 根据本发明，第一开关晶体管（TR2）周期性地将输出电压切换到测量变压器（T2）的初级绕组（W4）。 变压器（T2）的感应二次电压通过第二开关晶体管（TR3）整流并切换到控制电路。 第一和第二晶体管是同步的，并且在导通状态下呈现出电阻/电流特性。

公开(公告)号：WO1990013939A1

公开(公告)日：1990-11-15

申请号：PCT/US1990002661

申请日：1990-05-11

Applicant: FMTT, INC.

Inventor： FMTT, INC. ,  HERBERT, Edward

IPC: H02M03/24

CPC classification number: H02M7/08 ,  H01F17/06 ,  H01F19/00 ,  H01F2038/006

Abstract: A power conversion system uses flat matrix transformer technology for distributed physical placement and improved heat transfer. A picture frame matrix transformer includes a plurality of interdependent magnetic elements (101a to 101f) arranged end-to-end in a closed pattern configuration and interwired as a matrix transformer having at least one primary (102), and at least one secondary (103a to 103f) winding, wherein the end of one secondary winding(103b) begins at one end to-end position between adjacent magnetic elements (101a, 101b), and ends at another end-to-end position between adjacent magnetic elements (101b, 101c). Rectifiers (204a to 204f) are connected to the secondary windings (103a to 103f) for providing a DC output voltage.

Abstract translation: 电力转换系统使用平面矩阵变压器技术进行分布式物理放置和改善传热。 相框矩阵变换器包括以闭合图案配置端对端布置的多个相互依赖的磁性元件（101a至101f），并且互连为具有至少一个初级（102）和至少一个次级（103a）的矩阵变压器 到103f）绕组，其中一个次级绕组（103b）的端部从相邻的磁性元件（101a，101b）之间的一端到端位置开始，并且在相邻的磁性元件（101b，101b）之间的另一个端部 - 101C）。 整流器（204a〜204f）与次级绕组（103a〜103f）连接，用于提供直流输出电压。

公开(公告)号：WO1998031092A1

公开(公告)日：1998-07-16

申请号：PCT/US1997022884

申请日：1997-12-12

Applicant: TURBODYNE SYSTEMS, INC.

Inventor： TURBODYNE SYSTEMS, INC. ,  HALIMI, Edward, M. ,  WILLETT, David, T.

IPC: H02M03/24

CPC classification number: H02M7/53875 ,  G01R19/0092 ,  H02M2001/0009 ,  H02P6/085 ,  H03K17/0822

Abstract: Six sets of parallel-connected MOSFETs (e.g., 42-46) are gated to provide a 3-phase (26, 28, 30) output. At least one of the MOSFETs (48, 64, 66) in each of three sets of the six sets has a separately metallized current-sensing pad. The output from this pad represents the phase current. When phase current reaches a maximum permissible level, this signal controls the MOSFET gates to limit current.

Abstract translation: 六组并联MOSFET（例如42-46）被选通以提供三相（26,28,30）输出。 六组中的三组中的每一组中的至少一个MOSFET（48,64,66）具有单独的金属化电流感测垫。 该焊盘的输出表示相电流。 当相电流达到最大允许电平时，该信号控制MOSFET栅极限制电流。

公开(公告)号：WO1997024794A2

公开(公告)日：1997-07-10

申请号：PCT/IB1996001358

申请日：1996-12-05

Applicant: PHILIPS ELECTRONICS N.V. ,  PHILIPS NORDEN AB

Inventor： PHILIPS ELECTRONICS N.V. ,  PHILIPS NORDEN AB ,  JANASWAMY, Anand ,  JAYARAMAN, Rajsekhar ,  AMATO, Michael ,  VELDMAN, Paul

IPC: H02M03/24

CPC classification number: H03F3/2171 ,  H02M7/003 ,  H02M7/538 ,  H03K17/063 ,  H03K2017/6875

Abstract: A half-bridge driver circuit including a lower drive module and a floating upper drive module for driving respective external upper and lower power transistors of a high voltage half bridge is contained in an integrated circuit chip which includes an on-chip bootstrap diode emulator which is turned on in response to a control signal applied to its gate in order to pass current from a power supply to charge an external bootstrap capacitor that powers the upper drive module. The upper drive module is accommodated in an insulated well and the diode emulator includes as its main current carrying element, a JFET transistor formed along the periphery of the well. The JFET transistor is driven into a conducting state at the same time the lower power transistor is driven into a conducting state. The source electrode of the JFET is coupled to the power supply via a diode, such that the voltage at said source electrode cannot rise above a level which is one diode drop below the voltage at said power supply output and control circuitry derives the control signal in a manner that it is constrained not to rise a level which is three diode drops below the voltage at the power supply output and limits the current that may flow in the gate electrode.

Abstract translation: 包括用于驱动高电压半桥的各个外部上下功率晶体管的下驱动模块和浮动上驱动模块的半桥驱动电路包含在集成电路芯片中，该集成电路芯片包括片上自举二极管仿真器 响应于施加到其栅极的控制信号而导通，以便从电源传递电流以对为上驱动模块供电的外部自举电容器充电。 上驱动模块容纳在绝缘井中，二极管仿真器包括作为其主载流元件的沿着阱周边形成的JFET晶体管。 JFET晶体管被驱动成导通状态，同时低功率晶体管被驱动到导通状态。 JFET的源电极通过二极管耦合到电源，使得所述源电极处的电压不能升高到低于所述电源输出处的电压的一个二极管的电平，并且控制电路将控制信号导出 限制其不会上升三个二极管的电平低于电源输出处的电压并限制可能在栅电极中流动的电流的方式。

公开(公告)号：WO1997012436A1

公开(公告)日：1997-04-03

申请号：PCT/IB1996000932

申请日：1996-09-12

Applicant: PHILIPS ELECTRONICS N.V. ,  PHILIPS NORDEN AB

Inventor： PHILIPS ELECTRONICS N.V. ,  PHILIPS NORDEN AB ,  MELSE, Abraham, Lodewijk

IPC: H02M03/24

CPC classification number: H02M3/33523 ,  H02M2001/0032 ,  Y02B70/16

Abstract: A power supply circuit, particularly a flyback converter comprises a transformer (14) whose secondary winding (18) powers a load device (8) and/or a rechargeable battery (6) via a rectifier diode (20). The load device (8) short-circuits the secondary winding (18) by means of a switch (28) in series with a diode (24). The short-circuit is detected by a measurement circuit (26) comprising a measurement winding (40) and a comparator (44) which compares the amplitude variation of the voltage across the measurement winding (40) with a threshold value (46). When a short-circuit is detected the control circuit (36) for the control of the switching transistor (30) of the flyback converter is changed over to a mode in which a given small current is supplied, which flows almost exclusively through the switch (28). As soon as the short-circuit ceases the flyback converter resumes its normal mode of operation. If desired, the load device (8) can control the desired current and/or voltage for powering the load device (8) and charging the battery (6) by turning on an turning off the switch (28).

Abstract translation: 电源电路，特别是反激式转换器包括其次级绕组（18）通过整流二极管（20）为负载装置（8）和/或可充电电池（6）供电的变压器（14）。 负载装置（8）通过与二极管（24）串联的开关（28）使次级绕组（18）短路。 短路由包括测量绕组（40）和比较器（44）的测量电路（26）检测，比较器（44）将测量绕组（40）两端的电压的振幅变化与阈值（46）进行比较。 当检测到短路时，用于控制回扫转换器的开关晶体管（30）的控制电路（36）转换为提供几乎完全通过开关的给定小电流的模式（ 28）。 一旦短路停止，反激式转换器恢复其正常工作模式。 如果需要，负载装置（8）可以通过打开关闭开关（28）来控制对负载装置（8）供电并为电池（6）充电所需的电流和/或电压。