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1. 发明授权

US08780596B2 Voltage adjusting circuit, contactless card and contactless card system having the same, and methods of operating the voltage adjusting circuit and the contactless card 有权
标题翻译：电压调节电路，非接触式卡和具有该电压调节电路的非接触式卡系统，以及操作电压调节电路和非接触式卡的方法
公开(公告)号：US08780596B2
公开(公告)日：2014-07-15
申请号：US13435286
申请日：2012-03-30
申请人： Il Jong Song , Hang Seok Choi , Sang Hyo Lee
发明人： Il Jong Song , Hang Seok Choi , Sang Hyo Lee
IPC分类号： H02M7/217
CPC分类号： G05F1/613 , G06K19/0701
摘要： A voltage adjusting circuit is provided includes an inducing circuit configured to induce a voltage from electromagnetic waves, a first rectifying circuit configured to rectify an output voltage of the inducing circuit, a control circuit configured to control an output voltage of the first rectifying circuit in response to the output voltage of the first rectifying circuit, and a second rectifying circuit configured to simultaneously rectify and regulate the output voltage of the inducing circuit in response to the output voltage of the first rectifying circuit.
摘要翻译：提供一种电压调节电路，包括：感应电路，其被配置为从电磁波感应电压;第一整流电路，被配置为对感应电路的输出电压进行整流;控制电路，被配置为响应于控制第一整流电路的输出电压以及第二整流电路，其被配置为响应于第一整流电路的输出电压同时对感应电路的输出电压进行整流和调节。

2. 发明授权

US08000119B2 Switching mode power supply and method of operation 有权
标题翻译：开关电源及操作方式
公开(公告)号：US08000119B2
公开(公告)日：2011-08-16
申请号：US11879550
申请日：2007-07-18
申请人： Hang-Seok Choi , Gwan-Bon Koo , Jae-Hwoan Chi
发明人： Hang-Seok Choi , Gwan-Bon Koo , Jae-Hwoan Chi
IPC分类号： H02M7/537
CPC分类号： H02M1/44 , H02M3/33523 , Y02B70/1433
摘要： In one embodiment, an SMPS includes a rectifier for generating an input DC voltage from an input AC voltage. A switching transistor is coupled to a primary coil of a transformer for generating power which is transferred to a second side of the transformer according to an operation of the switching transistor. A switching controller receives a feedback voltage corresponding to an output voltage, a sensing signal corresponding to a current flowing through the switching transistor, and a first signal corresponding to a voltage difference between a first electrode and a second electrode of the switching transistor. The switching controller controls an on/off operation of the switching transistor. The switching controller sets a threshold period whenever the first signal has a value greater than a reference value, thereby setting a plurality of threshold periods during operation of the switching mode power supply. For each threshold period, the switching controller turns on the switching transistor at a point after a variable delay time from a previous point at which the switching transistor was turned on.
摘要翻译：在一个实施例中，SMPS包括用于从输入AC电压产生输入DC电压的整流器。开关晶体管耦合到变压器的初级线圈，用于根据开关晶体管的操作产生传输到变压器的第二侧的功率。开关控制器接收对应于输出电压的反馈电压，对应于流过开关晶体管的电流的感测信号，以及对应于开关晶体管的第一电极和第二电极之间的电压差的第一信号。开关控制器控制开关晶体管的导通/截止操作。每当第一信号具有大于参考值的值时，开关控制器设置阈值周期，从而在开关模式电源的操作期间设定多个阈值周期。对于每个阈值周期，开关控制器在从开关晶体管导通的前一点起的可变延迟时间之后的点处接通开关晶体管。

3. 发明授权

US07880453B2 Interleaved switching converter, and switching controller and controlling method thereof 有权
标题翻译：交错式开关变换器及开关控制器及其控制方法
公开(公告)号：US07880453B2
公开(公告)日：2011-02-01
申请号：US12257774
申请日：2008-10-24
申请人： Gwan-Bon Koo , Young-Bae Park , Hang-Seok Choi
发明人： Gwan-Bon Koo , Young-Bae Park , Hang-Seok Choi
IPC分类号： G05F1/575 , G05F1/613
CPC分类号： H02M3/1584 , H02M2003/1586
摘要： In an interleaved switching converter, a first converter including a first switch is coupled to a second converter including a second switch. A switching controller for controlling the first switch and the second switch outputs a second control signal for operating the second switch based a first control signal for operating the first switch. A phase shift between the first control signal and the second control signal is 180 degrees.
摘要翻译：在交织开关转换器中，包括第一开关的第一转换器耦合到包括第二开关的第二转换器。用于控制第一开关和第二开关的开关控制器基于用于操作第一开关的第一控制信号输出用于操作第二开关的第二控制信号。第一控制信号和第二控制信号之间的相移为180度。

4. 发明授权

US07848124B2 Overload and short protected soft-start converter 有权
标题翻译：过载和短保护软启动转换器
公开(公告)号：US07848124B2
公开(公告)日：2010-12-07
申请号：US12079184
申请日：2008-03-25
申请人： Hang-Seok Choi , Young-Bae Park , Gwan-Bon Koo , Jin-Tae Kim
发明人： Hang-Seok Choi , Young-Bae Park , Gwan-Bon Koo , Jin-Tae Kim
IPC分类号： H02H7/122 , H02M3/335
CPC分类号： H02M1/32 , H02M1/36 , H02M3/33523
摘要： A converter and a driving method thereof are provided. The converter can determine the output short state of the converter after the soft start is finished by using a detection signal that corresponds to an input signal while a switched is turned on and that corresponds to an output signal while the switch is turned off, so as to convert the input signal into the output signal according to a switching operation of the switch. The converter can determine the overload state of the converter by using a feedback voltage corresponding to the output signal, and terminate the switching operation when the converter is in an output short state or overload state.
摘要翻译：提供A转换器及其驱动方法。转换器可以通过在切换开启时使用与输入信号相对应的检测信号，并且在开关断开时对应于输出信号，在软启动完成之后确定转换器的输出短路状态，从而根据开关的切换动作将输入信号转换为输出信号。转换器可以通过使用与输出信号相对应的反馈电压来确定转换器的过载状态，并且在转换器处于输出短路状态或过载状态时终止开关操作。

5. 发明授权

US07768802B2 Switching mode power supply and method of operation 有权
标题翻译：开关电源及操作方式
公开(公告)号：US07768802B2
公开(公告)日：2010-08-03
申请号：US11827196
申请日：2007-07-11
申请人： J. Hoon Lee , Hang-Seok Choi , Gwan-Bon Koo
发明人： J. Hoon Lee , Hang-Seok Choi , Gwan-Bon Koo
IPC分类号： H02M3/335
CPC分类号： H02M1/44 , H02M3/33507
摘要： In one embodiment, a switching mode power supply (SMPS) includes a rectifier for generating an input DC voltage from an input AC voltage. A switching transistor, coupled to a primary coil of a transformer, converts the input DC voltage and supplies power to a secondary side of the transformer according to an operation of the switching transistor. A switching controller receives a feedback voltage corresponding to a voltage of the secondary side of the transformer, a sense signal corresponding to current flowing at the switching transistor, and a first signal corresponding to a voltage difference between first and second electrodes of the switching transistor. The switching controller controls the turning on and off of the switching transistor. After the switching transistor is turned off, the switching controller detects and counts a number of times that a voltage level of the first signal and a reference voltage are equal. The switching controller causes the switching transistor to turn-on when the count of the number of times reaches a variable reference number.
摘要翻译：在一个实施例中，开关模式电源（SMPS）包括用于从输入AC电压产生输入DC电压的整流器。耦合到变压器的初级线圈的开关晶体管根据开关晶体管的操作转换输入直流电压并将功率供应到变压器的次级侧。开关控制器接收对应于变压器的次级侧的电压的反馈电压，对应于在开关晶体管流动的电流的感测信号，以及对应于开关晶体管的第一和第二电极之间的电压差的第一信号。开关控制器控制开关晶体管的导通和截止。在开关晶体管截止之后，开关控制器检测并计数第一信号和参考电压的电压电平相等的次数。当数量的计数达到可变参考数时，开关控制器使开关晶体管导通。

6. 发明授权

US07684216B2 Quasi resonant switching mode power supply 有权
标题翻译：准谐振开关电源
公开(公告)号：US07684216B2
公开(公告)日：2010-03-23
申请号：US12079703
申请日：2008-03-28
申请人： Hang-Seok Choi , Jin-Tae Kim , Jae-Hwoan Chi
发明人： Hang-Seok Choi , Jin-Tae Kim , Jae-Hwoan Chi
IPC分类号： H02M3/335
CPC分类号： H02M3/33507 , Y02B70/1433
摘要： A switching mode power supply (SMPS) and a driving method thereof are provided. The SMPS includes a power supply block that includes a first switch coupled to a first coil of a primary side of a transformer for converting an input voltage, wherein the power supply block supplies power to a second coil and a third coil of a secondary side of the transformer according to operation of the first switch; and a PWM signal generator determines a turn-on time of the first switch according to the input voltage, and the turn-on time is determined regardless of a power magnitude of an output terminal connected to the second coil. Accordingly, screen noise due to a ripple can be eliminated and stress on the switch breakdown due to excessive power input can be reduced to enable an SMPS with stable driving.
摘要翻译：提供开关电源（SMPS）及其驱动方法。 SMPS包括电源块，其包括耦合到变压器的初级侧的第一线圈的第一开关，用于转换输入电压，其中电源模块向第二线圈和第二线圈的次级侧提供电力变压器根据第一开关的动作; 并且PWM信号发生器根据输入电压确定第一开关的接通时间，并且确定接通时间，而不管连接到第二线圈的输出端子的功率幅度如何。因此，可以消除由纹波引起的屏幕噪声，并且可以减少由于过大的功率输入引起的开关击穿的应力，从而能够使具有稳定驱动的SMPS。

7. 发明申请

US20090251929A1 Convertor and Driving Method Thereof 有权
标题翻译：转换器及其驱动方法
公开(公告)号：US20090251929A1
公开(公告)日：2009-10-08
申请号：US12417168
申请日：2009-04-02
申请人： Hang-Seok Choi
发明人： Hang-Seok Choi
IPC分类号： H02M3/335
CPC分类号： H02M1/08 , H02M3/3378 , Y02B70/1433
摘要： A converter and a driving method thereof are provided. The converter includes first and second switches, and generates a square wave signal according to operations of the first and second switches. The converter includes a first capacitor and a primary coil, and resonates a driving voltage by using a driving voltage with the first capacitor and the primary coil so as to generate a driving current. The converter includes a secondary coil that forms the primary coil and the transformer, and generates output power by rectifying a current and a voltage generated in the secondary coil. In addition, the converter detects the phase of the driving current, and increases switching frequencies of the first and second switches if a phase difference of the phase of the driving current and that of the driving voltage is smaller than a predetermined value.
摘要翻译：提供A转换器及其驱动方法。转换器包括第一和第二开关，并且根据第一和第二开关的操作产生方波信号。转换器包括第一电容器和初级线圈，并且通过使用第一电容器和初级线圈的驱动电压来谐振驱动电压，以产生驱动电流。该转换器包括形成初级线圈和变压器的次级线圈，并且通过整流在次级线圈中产生的电流和电压来产生输出功率。此外，如果驱动电流的相位与驱动电压的相位差小于预定值，则转换器检测驱动电流的相位，并且增加第一和第二开关的开关频率。

8. 发明申请

US20090251926A1 Converter and driving method thereof 有权
标题翻译：转换器及其驱动方法
公开(公告)号：US20090251926A1
公开(公告)日：2009-10-08
申请号：US12220769
申请日：2008-07-25
申请人： Hang-Seok Choi , Young-Bae Park , Jae-Hwoan Chi , Gwan-Bon Koo
发明人： Hang-Seok Choi , Young-Bae Park , Jae-Hwoan Chi , Gwan-Bon Koo
IPC分类号： H02M3/335
CPC分类号： H02M3/33569
摘要： A converter is disclosed for using at least one switch to convert an input signal to a square wave signal, and using the square wave signal to generate an output voltage. The converter converts the square wave signal by a switching operation of a switch and generates the output voltage, and includes a switch controller for controlling the switching operation. The switch controller generates a first signal VCT having a first period that varies according to an output voltage, controls the switching operation of the switch by using the first signal, detects the output voltage, a first current Ids2 flowing through the switch, and a level of the first signal, and controls a burst mode according to the detection results.
摘要翻译：公开了一种用于使用至少一个开关将输入信号转换成方波信号的A转换器，并且使用方波信号来产生输出电压。转换器通过开关的开关操作来转换方波信号并产生输出电压，并且包括用于控制开关操作的开关控制器。开关控制器产生具有根据输出电压变化的第一周期的第一信号VCT，通过使用第一信号来控制开关的开关操作，检测输出电压，流过开关的第一电流Ids2和电平的第一信号，并根据检测结果控制突发模式。

9. 发明申请

US20090091955A1 Quasi resonant switching mode power supply 有权
标题翻译：准谐振开关电源
公开(公告)号：US20090091955A1
公开(公告)日：2009-04-09
申请号：US12079703
申请日：2008-03-28
申请人： Hang-Seok Choi , Jin-Tae Kim , Jae-Hwoan Chi
发明人： Hang-Seok Choi , Jin-Tae Kim , Jae-Hwoan Chi
IPC分类号： H02M5/45
CPC分类号： H02M3/33507 , Y02B70/1433
摘要： A switching mode power supply (SMPS) and a driving method thereof are provided. The SMPS includes a power supply block that includes a first switch coupled to a first coil of a primary side of a transformer for converting an input voltage, wherein the power supply block supplies power to a second coil and a third coil of a secondary side of the transformer according to operation of the first switch; and a PWM signal generator determines a turn-on time of the first switch according to the input voltage, and the turn-on time is determined regardless of a power magnitude of an output terminal connected to the second coil. Accordingly, screen noise due to a ripple can be eliminated and stress on the switch breakdown due to excessive power input can be reduced to enable an SMPS with stable driving.
摘要翻译：提供开关电源（SMPS）及其驱动方法。 SMPS包括电源块，其包括耦合到变压器的初级侧的第一线圈的第一开关，用于转换输入电压，其中电源模块向第二线圈和第二线圈的次级侧提供电力变压器根据第一开关的动作; 并且PWM信号发生器根据输入电压确定第一开关的接通时间，并且确定接通时间，而不管连接到第二线圈的输出端子的功率幅度如何。因此，可以消除由纹波引起的屏幕噪声，并且可以减少由于过大的功率输入引起的开关击穿的应力，从而能够使具有稳定驱动的SMPS。

10. 发明申请

US20070285953A1 Quasi-resonant converter and controlling method thereof 有权
标题翻译：准谐振变换器及其控制方法
公开(公告)号：US20070285953A1
公开(公告)日：2007-12-13
申请号：US11818421
申请日：2007-06-13
申请人： Gwan-Bon Koo , Hang-Seok Choi , Jae-Hwoan Chi
发明人： Gwan-Bon Koo , Hang-Seok Choi , Jae-Hwoan Chi
IPC分类号： H02M3/335
CPC分类号： H02M3/33523 , H02M3/33507 , Y02B70/1433
摘要： The present invention relates to a quasi-resonant converter. In the quasi-resonant converter according to the present invention, a predetermined first period and a second period following to the first period are set. In the second period, a switch is turned on at a time point where voltages at both ends of the switch fall to the minimum if the second period includes the time point, and the switch is turned on at the end of the second period if the second period does not include the time point. Therefore, the switching frequency of the switch can be restricted within a predetermined range.
摘要翻译：本发明涉及准谐振转换器。在根据本发明的准谐振变换器中，设定第一期间之后的规定的第一期间和第二期间。在第二时段中，如果第二周期包括时间点，则开关两端的电压下降到最小的时间点开关，并且在第二周期结束时开关接通第二期不包括时间点。因此，可以将开关的开关频率限制在预定范围内。

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