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1. 发明申请

US20180166978A1 APPARATUS AND METHOD FOR CONTROLLING PULSE WIDTH MODULATION SWITCHING FREQUENCY 审中-公开
公开(公告)号：US20180166978A1
公开(公告)日：2018-06-14
申请号：US15836883
申请日：2017-12-10
申请人： HYUNDAI AUTRON CO., LTD.
发明人： Dong-Hwi LIM , Woo-Seok SHIM , Hyun-Doo HWANG
IPC分类号： H02M1/42 , H02M3/335 , H02M7/06 , H02M1/08
CPC分类号： H02M1/4233 , H02M1/08 , H02M1/4225 , H02M3/33538 , H02M3/33569 , H02M3/3376 , H02M7/06 , H02M2001/0009 , H02M2001/0012 , H02M2001/0025 , H02M2001/0058 , H02M2001/007 , Y02B70/126 , Y02B70/1491
摘要： Disclosed herein are an apparatus and a method for controlling PWM switching frequency that employ a negate PWM scheme to thereby increase PWM switching frequency, improve control responsiveness, and reduce the size of the circuit. The apparatus includes: a power factor correction (PFC) converter configured to convert an AC voltage into a DC voltage, the converter comprising a transistor controlling an operation of the PFC converter and a current sensor for measuring an electric current flowing through the transistor; and a controller configured to receive an output from the current sensor and calculate a duty ratio of a switching signal applied to a gate terminal of the transistor. The controller applies the calculated duty ratio to the switching signal in an on-duty period of the switching signal.

2. 发明授权

US09655177B2 Forward converter having a primary-side current sense circuit 有权
公开(公告)号：US09655177B2
公开(公告)日：2017-05-16
申请号：US14940540
申请日：2015-11-13
申请人： Lutron Electronics Co., Inc.
发明人： Dragan Veskovic
IPC分类号： H05B37/02 , H05B33/08 , H02M3/335
CPC分类号： H05B33/0815 , H02M1/08 , H02M3/33538 , H02M3/33546 , H02M3/33553 , H02M2001/0009 , H05B33/08 , H05B33/0851 , Y02B20/347
摘要： A load control device for controlling the amount of power delivered to an electrical load (e.g., an LED light source) comprises an isolated forward converter comprising a transformer, a controller, and a current sense circuit operable to receive a sense voltage representative of a primary current conducting through to a primary winding of the transformer. The primary winding is coupled in series with a semiconductor switch, while a secondary winding is adapted to be operatively coupled to the load. The forward converter comprises a sense resistor coupled in series with the primary winding for producing the sense voltage that is representative of the primary current. The current sense circuit receives the sense voltage and averages the sense voltage when the semiconductor switch is conductive, so as to generate a load current control signal that is representative of a real component of a load current conducted through the load.

3. 发明授权

US09599950B2 Image forming apparatus and a power supply apparatuses for controlling a turn-on timing of a switching element whose output voltage decreases 有权
公开(公告)号：US09599950B2
公开(公告)日：2017-03-21
申请号：US14296235
申请日：2014-06-04
申请人： CANON KABUSHIKI KAISHA
发明人： Minoru Hayasaki
IPC分类号： H02M3/335 , G03G15/00 , H02M1/00
CPC分类号： G03G15/80 , H02M3/335 , H02M3/33523 , H02M3/33538 , H02M3/33546 , H02M2001/0032 , Y02B70/16
摘要： The power supply apparatus includes a transformer, a switch element that drives a primary side of the transformer, and a control unit that controls a drive frequency of the switch element, wherein when a state of driving the switch element at a first drive frequency is shifted to a state of driving the switch element at a second drive frequency lower than the first drive frequency, the control unit turns on the switch element at a first timing in which a displacement amount of the transformer caused by the drive of the transformer becomes a first displacement amount and at a second timing in which the displacement of the transformer becomes a second displacement amount smaller than the first displacement amount.

4. 发明授权

US09543841B2 Control device employed in a switched electrical power supply system 有权
标题翻译：在开关电源系统中使用的控制装置
公开(公告)号：US09543841B2
公开(公告)日：2017-01-10
申请号：US13795319
申请日：2013-03-12
申请人： Schneider Toshiba Inverter Europe SAS
发明人： Hocine Boulharts , Allan Pierre Barauna
IPC分类号： H02M3/335 , H03K17/10 , H02M5/458 , H03K17/74
CPC分类号： H02M3/335 , H02M3/33538 , H02M5/458 , H03K17/102 , H03K17/74
摘要： The invention relates to a control device intended to be employed in a switched electrical power supply system, said system being able in particular to be employed in a variable speed drive to power its electronics. The control device comprises a first transistor intended to receive control signals originating from a control unit and a second transistor connected in series with the first transistor and provided with a floating-control gate.
摘要翻译：本发明涉及一种旨在用于开关电源系统中的控制装置，所述系统特别能够用于变速驱动器以为其电子设备供电。控制装置包括第一晶体管，用于接收源自控制单元的控制信号和与第一晶体管串联连接的第二晶体管，并设置有浮动控制栅极。

5. 发明申请

US20160301319A1 AC/DC CONVERTER WITH NEUTRAL VOLTAGE LIFT CAPACITOR 有权
标题翻译：具有中性电压提升电容器的AC / DC转换器
公开(公告)号：US20160301319A1
公开(公告)日：2016-10-13
申请号：US15038032
申请日：2014-11-18
申请人： TECHNISCHE UNIVERSITEIT EINDHOVEN
发明人： Bastiaan Joannes Daniël VERMULST
IPC分类号： H02M3/335 , H02M1/42 , H02M1/12 , H02M1/08
CPC分类号： H02M3/33538 , H02M1/08 , H02M1/12 , H02M1/42 , H02M5/293 , H02M7/217 , H02M7/797 , H02M2001/007
摘要： Some embodiments are directed to an AC/DC converter comprising a first AC terminal for connection to a first AC circuit terminal, a neutral line terminal for connection to a neutral AC circuit terminal, a common node, a first AC side active bridge coupled between the first AC terminal and the common node, and a neutral voltage lift capacitor coupled between the neutral line terminal and the common node. The converter comprises first and second DC terminals, and a capacitor between the first and second terminals. A DC-side active bridge is coupled between the first and second terminals. An inductor is coupled between a switchable nodes of the first AC side active bridge and the DC side active bridge. A controller is arranged to control the first AC side active bridge and the DC-side active bridge so to alternate voltage across the first AC terminal and the neutral line terminal.
摘要翻译：一些实施例涉及一种AC / DC转换器，其包括用于连接到第一AC电路端子的第一AC端子，用于连接到中性AC电路端子的中性线端子，公共节点，耦合在第一AC电路端子第一AC端子和公共节点，以及耦合在中性线端子和公共节点之间的中性升压电容器。该转换器包括第一和第二DC端子以及第一和第二端子之间的电容器。 DC侧有源桥耦合在第一和第二端子之间。电感器耦合在第一AC侧有源电桥和DC侧有源电桥之间的可切换节点之间。控制器被布置成控制第一AC侧有源桥和DC侧有源桥，使得跨越第一AC端子和中性线端子交替电压。

6. 发明授权

US09385616B2 AC/DC power converter 有权
公开(公告)号：US09385616B2
公开(公告)日：2016-07-05
申请号：US14541474
申请日：2014-11-14
申请人： Silergy Semiconductor Technology (Hangzhou) LTD
发明人： Jian Deng , Binbin Li
IPC分类号： H05B37/00 , H02M3/335 , H05B33/08 , H02M1/42 , H02M1/32 , H02M1/00
CPC分类号： H02M3/33538 , H02M1/32 , H02M1/4225 , H02M1/4258 , H02M2001/0009 , H02M2001/007 , H05B33/0815 , H05B33/0818 , Y02B20/348 , Y02B70/126
摘要： In one embodiment, an AC/DC power converter can include: a rectifier bridge and a filter capacitor for converting an external AC voltage to a half-sinusoid DC input voltage; a first storage component, where during each switching cycle in a first operation mode, a first path receives the half-sinusoid DC input voltage to store energy in the first storage component, and a first current through the first storage component increases; a second storage component, where a second path receives a second DC voltage to store energy in the second storage component, and a second current through the second storage component increases; and a third storage component, where in a second operation mode, the first current decreases to release energy from the first to the third storage component, where the second DC voltage includes a voltage across the third storage component through a third path.

7. 发明授权

US09263956B2 Switch-mode power supply control apparatus and flyback switch-mode power supply including the control apparatus 有权
标题翻译：开关电源控制装置和包括控制装置的反激式开关电源
公开(公告)号：US09263956B2
公开(公告)日：2016-02-16
申请号：US14123038
申请日：2012-05-25
申请人： Xianming Tang , Yunlong Yao , Jianxing Wu
发明人： Xianming Tang , Yunlong Yao , Jianxing Wu
IPC分类号： H02M1/32 , H02M3/335 , H02M1/00
CPC分类号： H02M3/33515 , H02M1/32 , H02M3/33538 , H02M2001/0035 , Y02B70/16
摘要： A switch-mode power supply control apparatus includes a PWM controller for outputting a driving signal and a short-circuit protection module coupled to a detection terminal. The detection terminal receives a zero-crossing detection voltage. If the time that the detection voltage input to the detection terminal is lower than a first reference voltage exceeds a predetermined time period, the short-circuit protection module determines that a short-circuit abnormal situation occurs, the short-circuit protection module outputs a short-circuit signal to the PWM controller, and the driving signal output by the PWM controller becomes a turn-off signal. If the short-circuit protection module does not detect the short-circuit abnormal situation, the PWM controller operates normally. A flyback switch-mode power supply includes the switch-mode power supply control apparatus. The flyback switch-mode power supply has a low power consumption when a short-circuit protection is taking place.
摘要翻译：开关电源控制装置包括用于输出驱动信号的PWM控制器和耦合到检测端子的短路保护模块。检测端子接收过零检测电压。如果输入到检测端子的检测电压低于第一参考电压的时间超过预定时间段，则短路保护模块确定发生短路异常情况，短路保护模块输出短路到PWM控制器的电路信号，由PWM控制器输出的驱动信号变为关断信号。如果短路保护模块没有检测到短路异常情况，则PWM控制器运行正常。反激式开关电源包括开关电源控制装置。当进行短路保护时，反激式开关电源具有低功耗。

8. 发明申请

US20150333640A1 Forward-Flyback Topology Switched Mode Power Supply 有权
标题翻译：正向反向拓扑开关电源
公开(公告)号：US20150333640A1
公开(公告)日：2015-11-19
申请号：US14235931
申请日：2013-02-28
申请人： Telefonaktiebolaget L M Ericsson (publ)
发明人： Oscar Persson , Mikael Appelberg , Magnus Karlsson
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 magnetise, 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 magnetisation 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.
摘要翻译：一种开关模式电源（400），包括具有初级绕组（410-1）的变压器（410），被配置为在操作期间存储从初级绕组（410-1）传递到其上的能量的变压器铁心（410-3）以及具有第一端子（T1）和第二端子（T2）的次级绕组（410-2）。开关模式电源还具有被配置为产生电压脉冲从而驱动变压器（410）的初级绕组（410-1）的初级侧电路（Q1，Q2，C1），以及辅助侧电路，其包括整流电路连接到第一和第二端子（T1，T2）处的次级绕组（410-2）。整流电路布置成使得在开关模式电源的正向运行阶段中，初级绕组（410-1）由初级侧电路驱动以磁化，并将能量存储在变压器铁芯（410）中 -3）时，通过整流电路输出从次级绕组（410-2）感应到从第二端子（T2）流向第一端子（T1）的电流。整流电路进一步被布置成使得在其中复位变压器铁芯（410-3）的磁化的开关模式电源的操作的回扫阶段期间，引起在次级绕组中从由整流电路输出到次级绕组（410-2）的第二端子（T2）的第一端子（T1），从而在正向运行期间存储在变压器（410）中的能量由整流电路输出。

9. 发明授权

US09143044B2 Apparatus and method for pulse width modulation control for switching power converters 有权
标题翻译：用于开关电源转换器的脉冲宽度调制控制的装置和方法
公开(公告)号：US09143044B2
公开(公告)日：2015-09-22
申请号：US13614933
申请日：2012-09-13
申请人： Liming Ye , Xujun Liu
发明人： Liming Ye , Xujun Liu
IPC分类号： H02M3/335 , H02M1/088 , H02M1/00
CPC分类号： H02M3/33569 , H02M1/088 , H02M3/33538 , H02M2001/0058 , Y02B70/1491
摘要： An embodiment apparatus comprises a first two-piecewise linear approximation generator and a second two-piecewise linear approximation generator coupled to an output of the first two-piece wise linear approximation generator. The second two-piecewise linear approximation generator generates a dead time inversely proportional to the output of the first two-piece wise linear approximation generator. A gate drive generator is configured to generate a primary switch drive signal and an auxiliary switch drive signal complementary to the primary switch drive signal. In addition, the dead time between the primary switch drive signal and the auxiliary switch drive signal is adjustable when the power converter operates in a light load condition.
摘要翻译：实施例装置包括耦合到第一两片式线性近似发生器的输出的第一分段线性近似发生器和第二分段线性近似发生器。第二个两分段线性近似发生器产生与第一个两片式线性近似发生器的输出成反比的死区时间。门驱动发生器被配置为产生与主开关驱动信号互补的一次开关驱动信号和辅助开关驱动信号。此外，当功率转换器在轻负载条件下工作时，主开关驱动信号和辅助开关驱动信号之间的死区时间是可调的。

10. 发明申请

US20150222192A1 ELECTRICAL CIRCUIT FOR DELIVERING POWER TO CONSUMER ELECTRONIC DEVICES 有权
公开(公告)号：US20150222192A1
公开(公告)日：2015-08-06
申请号：US14681979
申请日：2015-04-08
申请人： Advanced Charging Technologies, LLC
发明人： Michael H. Freeman , W.J. *Jim* Weaver, JR. , Mitchael C. Freeman , Robert Dieter , Glenn Noufer , Randall L. Sandusky , Jim Sesters , Neaz E. Farooqi , Jim Devoy , Jay Cormier
IPC分类号： H02M3/335
CPC分类号： H02M3/33546 , H02M1/08 , H02M1/12 , H02M1/14 , H02M1/36 , H02M3/07 , H02M3/073 , H02M3/157 , H02M3/158 , H02M3/33515 , H02M3/33538 , H02M2001/0009 , H02M2001/0012 , H02M2001/0025 , H02M2001/0032 , H02M2001/0045 , H02M2001/007 , H03M1/12 , Y02B70/16 , Y10T29/41
摘要： An electrical circuit for providing electrical power for use in powering electronic devices is described herein. The electrical circuit includes a primary power circuit and a secondary power circuit. The primary power circuit receives an alternating current (AC) input power signal from an electrical power source and generates an intermediate direct current (DC) power signal. The intermediate DC power signal is generated at a first voltage level that is less than a voltage level of the AC input power signal. The secondary power circuit receives the intermediate DC power signal from the primary power circuit and delivers an output DC power signal to an electronic device. The output DC power signal is delivered at an output voltage level that is less than the first voltage level of the intermediate DC power signal.

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