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1.发明授权
公开(公告)号：EP3248278B1
公开(公告)日：2019-08-28
申请号：EP15704110.4
申请日：2015-01-21
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公开(公告)号：EP2936513A1
公开(公告)日：2015-10-28
申请号：EP12818994.1
申请日：2012-12-19
发明人： PERSSON, Oscar , KARLSSON, Magnus
CPC分类号： H01F27/2804 , H01F27/323 , H01F41/041 , Y10T29/4902
摘要： Embodiments provide a multi- layered printed circuit board, PCB, for providing first windings for a first side of a planar magnetic transformer and second windings for a second side of the planar magnetic transformer, the PCB comprising; a plurality of conductive layers configured to provide the first windings,- a plurality of conductive layers configured' to provide the second windings; and a plurality of layers of an isolation material; wherein, each layer of isolation material is arranged between two conductive layers so as to provide electrical isolation between said two conductive layers; and a group of two or more adjacent conductive layers are all conductive layers of the first windings and are all arranged between two conductive layers of the second windings, wherein the thickness of the isolation material between the group of adjacent conductive layers of the first windings is less than ^ the thickness of the isolation material between a conductive layer of the second windings and a conductive layer of the first windings. Advantageously, a PCB with a lower height than realisable with known fully interleaved planar magnetic transformer designs is provided. The reduced height improves the thermal conductivity of the PCB, the flux leakage is reduced and good magnetic coupling between the primary and secondary sides is maintained.
摘要翻译： 多层印刷电路板PCB包括用于平面磁变压器的第一侧的第一绕组和平面磁变压器的第二侧的第二绕组。 PCB还包括被配置为第一绕组的导电层，被配置为第二绕组的导电层和隔离材料的层。 隔离材料的每个层被布置在两个导电层之间以提供两个导电层之间的电隔离。 一组两个或更多个相邻的导电层都是第一绕组的导电层，并且都布置在第二绕组的两个导电层之间。 在第一绕组的相邻导电层组之间的隔离材料的厚度小于第二绕组的导电层和第一绕组的导电层之间的隔离材料的厚度。
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公开(公告)号：EP2612430B1
公开(公告)日：2014-07-16
申请号：EP10749857.8
申请日：2010-09-02
IPC分类号： H02M3/335
CPC分类号： H02M3/33546 , H02M3/156 , H02M3/335 , H02M3/33592 , H02M2001/0048 , Y02B70/1475 , Y02B70/1491
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公开(公告)号：EP2612430A1
公开(公告)日：2013-07-10
申请号：EP10749857.8
申请日：2010-09-02
IPC分类号： H02M3/335
CPC分类号： H02M3/33546 , H02M3/156 , H02M3/335 , H02M3/33592 , H02M2001/0048 , Y02B70/1475 , Y02B70/1491
摘要： An isolated switched mode power supply, comprising: a transformer comprising a primary winding and a secondary winding, said secondary winding having a centre -tap provided between a first portion and a second portion thereof; a primary side circuit arranged to generate voltage pulses and thereby to drive the primary winding of the transformer; and a secondary side circuit. The secondary side circuit comprises a rectification network connected to the secondary winding, the rectification network and the transformer being arranged such that, during a free-wheeling period of operation of the switched mode power supply in which the primary winding is not driven by the primary side circuit, a magnetic flux from the first portion of the winding substantially cancels a magnetic flux from the second portion of the winding between the first and second portions of the winding. The secondary side circuit further comprises a switching device, which is connected to the centre-tap and an output of the rectification network so as to conduct at least a part of a free-wheeling current flowing in the secondary side circuit during the said free-wheeling period.
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公开(公告)号：EP2962387A1
公开(公告)日：2016-01-06
申请号：EP13706552.0
申请日：2013-02-28
IPC分类号： H02M3/335
CPC分类号： H02M3/33546 , H02M1/08 , H02M3/33538 , H02M3/33576 , H02M3/33592 , H03K2017/307 , Y02B70/1475
摘要： A switched mode power supply (400), comprising a transformer (410) having a primary winding (410-1), a transformer core (410-3) configured to store energy transferred thereto from the primary winding (410-1) during operation, and a secondary winding (410-2) having a first terminal (T1) and a second terminal (T2). The switched mode power supply also has a primary side circuit (Q1, Q2, C1) arranged to generate voltage pulses and thereby to drive the primary winding (410-1) of the transformer (410), and a secondary side circuit comprising a rectification circuit connected to the secondary winding (410-2) at the first and second terminals (T1, T2). The rectification circuit is arranged such that during a forward phase of operation of the switched mode power supply, in which the primary winding (410-1) is driven by the primary side circuit to magnetize, and store energy in, the transformer core (410-3), a current induced to flow in the secondary winding (410-2) from the second terminal (T2) to the first terminal (T1) is output by the rectification circuit. The rectification circuit is further arranged such that during a fly-back phase of operation of the switched mode power supply, in which the magnetization of the transformer core (410-3) is reset, a current induced to flow in the secondary winding from the first terminal (T1) to the second terminal (T2) of the secondary winding (410-2) is output by the rectification circuit so that energy stored in the transformer (410) during the forward phase of operation is output by the rectification circuit.
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6.发明公开CONTROLLING A SWITCHED MODE POWER SUPPLY WITH MAXIMISED POWER EFFICIENCY 有权STEUERUNG EINES SCHALTNETZTEILS MIT MAXIMIERTER LEISTUNGSEFFIZIENZ
公开(公告)号：EP2859653A1
公开(公告)日：2015-04-15
申请号：EP12726449.7
申请日：2012-06-08
发明人： KARLSSON, Magnus , PERSSON, Oscar
IPC分类号： H02M3/337
CPC分类号： H02M3/33546 , G05F1/10 , H02M3/3376 , H02M3/3378 , H02M2001/0022 , H02M2001/0025
摘要： A control circuit operable to generate a control signal to control the duty cycle of a switched mode power supply is provided. The control circuit comprises an input terminal for receiving a signal indicative of an input voltage (Vin) of the switched mode power supply, and a reference signal generator to generate, in dependence upon the received signal, a reference signal (VR) that is a function of the input voltage (Vin). The control circuit further comprises an error signal generator to receive a signal indicative of an output voltage (Vout) of the switched mode power supply and to generate an error signal (VE) based on the reference signal (VR) and based on the output voltage, a low pass filter, and a duty cycle control signal generator to generate the control signal to control the duty cycle of the switched mode power supply in dependence upon the error signal (VE).
摘要翻译： 提供了可操作以产生控制信号以控制开关模式电源的占空比的控制电路。 控制电路包括用于接收指示开关模式电源的输入电压（Vin）的信号的输入端子和参考信号发生器，用于根据所接收的信号产生基准信号（VR），该参考信号 输入电压（Vin）的功能。 控制电路还包括误差信号发生器，用于接收指示开关模式电源的输出电压（Vout）的信号，并且基于参考信号（VR）产生误差信号（VE），并基于输出电压 ，低通滤波器和占空比控制信号发生器，用于根据误差信号（VE）产生控制信号以控制开关模式电源的占空比。
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公开(公告)号：EP2553798B1
公开(公告)日：2014-12-03
申请号：EP10713162.5
申请日：2010-03-30
发明人： PERSSON, Oscar , APPELBERG, Mikael
IPC分类号： H02M1/42
CPC分类号： H02M3/33507 , H02M1/36 , H02M1/4233 , H02M3/33523 , Y02B70/126
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8.发明公开METHOD OF OPERATING A SWITCHED MODE POWER SUPPLY, COMPUTER PROGRAM, AND SWITCHED MODE POWER SUPPLY 审中-公开操作开关模式电源，计算机程序和开关模式电源的方法
公开(公告)号：EP3248278A1
公开(公告)日：2017-11-29
申请号：EP15704110.4
申请日：2015-01-21
CPC分类号： H02M3/33546 , H02M1/14 , H02M3/337 , H02M2001/0045
摘要： A method of operating a switched mode power supply comprising a switched mode converter and a control arrangement. The switched mode converter converts an input voltage to an output voltage and includes a primary winding, controllable switch based circuitry connecting the input voltage over the primary winding, a secondary winding coupled to the primary winding, and an LC filter including an inductive element and a capacitive element, wherein the output voltage is obtained as the voltage over the capacitive element and a duty cycle of the switched mode converter can be controlled by controlling the switch based circuitry. The switched mode converter is controlled depending on measurements of the input and output voltages in a hybrid regulated ratio control scheme. The power of the switched mode power supply is shut off or a current thereof is limited, when a current of the switched mode power supply reaches a maximum current.
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公开(公告)号：EP2810362B1
公开(公告)日：2016-01-27
申请号：EP12701256.5
申请日：2012-01-30
发明人： KARLSSON, Magnus , PERSSON, Oscar
CPC分类号： H02M3/33592 , H02M3/156 , H02M3/33507 , H02M2001/0003 , H02M2001/0022 , H02M2001/0025
摘要： A control circuit, that controls the duty cycle of a switched mode power supply, comprises a reference voltage generator that, responsive to the input voltage exceeding a threshold value, generates a predetermined reference signal. Responsive to the input voltage not exceeding the threshold value, the reference voltage generator receives a signal indicative of an input voltage of the switched mode power supply and generates a variable reference signal dependent upon the input voltage. The control circuit further comprises an error signal generator that receives a signal indicative of an output voltage of the power supply and generates an error signal based on the reference signal generated by the reference voltage generator and based on the output voltage. The control circuit also includes a duty cycle control signal generator that generates the control signal to control the duty cycle of the power supply in dependence upon the error signal.
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公开(公告)号：EP2697900B1
公开(公告)日：2015-06-03
申请号：EP11714981.5
申请日：2011-04-15
CPC分类号： H02M3/335 , H02M1/36 , H02M3/33507 , H02M3/33523
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