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1. 发明授权

US09312746B2 Switching techniques to reduce current overshoot in a DC to DC converter 有权
标题翻译：开关技术可以减少DC到DC转换器的电流过冲
公开(公告)号：US09312746B2
公开(公告)日：2016-04-12
申请号：US13453042
申请日：2012-04-23
申请人： Hangseok Choi
发明人： Hangseok Choi
IPC分类号： H02M3/335 , H02M1/36 , H02M1/00
CPC分类号： H02M1/36 , H02M3/33523 , H02M3/33569 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491
摘要： A DC/DC converter system includes gate control circuitry, a transformer, a second stage, and soft start control circuitry. The gate control circuitry is configured to generate a first and a second gate control signal configured to open and close first and second switches of an inverter circuitry, respectively, to generate an AC signal from a DC input signal. The transformer transforms the AC signal and the second stage rectifies the AC signal to a DC output signal. The soft start control circuitry generates a signal to delay a closing of the first switch during an initial portion (Td) of a first cycle of the first switch. A method of soft-starting a DC/DC converter includes generating first and second gate control signals and delaying closing of the first switch during Td.
摘要翻译： DC / DC转换器系统包括门控电路，变压器，第二级和软启动控制电路。门控制电路被配置为产生分别用于打开和关闭逆变器电路的第一和第二开关的第一和第二栅极控制信号，以从DC输入信号产生AC信号。变压器变换交流信号，第二级将交流信号整流为直流输出信号。软启动控制电路在第一开关的第一周期的初始部分（Td）期间产生延迟第一开关闭合的信号。一种软启动DC / DC转换器的方法包括在Td期间产生第一和第二门控制信号并延迟第一开关的闭合。

2. 发明申请

US20140043865A1 SYNCHRONOUS RECTIFIER CONTROL TECHNIQUES FOR A RESONANT CONVERTER 有权
标题翻译：用于谐振转换器的同步整流器控制技术
公开(公告)号：US20140043865A1
公开(公告)日：2014-02-13
申请号：US13508649
申请日：2012-04-25
申请人： Hangseok Choi
发明人： Hangseok Choi
IPC分类号： H02M3/335
CPC分类号： H02M3/33507 , H02M1/32
摘要： A resonant converter system includes a first stage having inverter circuitry and resonant tank circuitry configured to generate an AC signal from a DC input signal, a transformer configured to transform the AC signal, and a second stage. The second stage features synchronous rectifier (SR) circuitry including a plurality of SR switches each having a body diode and SR control circuitry. SR control circuitry is configured to generate gate control signals to control the conduction state of the SR switches so that the body diode conduction time is minimized and a negative current across the SR switches is reduced or eliminated. The method includes controlling the conduction state of SR switches to conduct as the body diode associated with the switch begins to conduct and controlling the SR switch to turn off as the current through the switch approaches a zero crossing.
摘要翻译：谐振转换器系统包括第一级，其具有被配置为从DC输入信号产生AC信号的逆变器电路和谐振回路电路，被配置为变换AC信号的变压器和第二级。第二级具有包括多个SR开关的同步整流器（SR）电路，每个SR开关具有体二极管和SR控制电路。 SR控制电路被配置为产生栅极控制信号以控制SR开关的导通状态，使得体二极管导通时间最小化，并且跨越SR开关的负电流减小或消除。该方法包括当与开关相关联的体二极管开始导通并控制SR开关截止时，控制SR开关的导通状态，因为通过开关的电流接近过零点。

3. 发明授权

US09083247B2 Synchronous rectifier control techniques for a resonant converter 有权
标题翻译：用于谐振转换器的同步整流器控制技术
公开(公告)号：US09083247B2
公开(公告)日：2015-07-14
申请号：US13508649
申请日：2012-04-25
申请人： Hangseok Choi
发明人： Hangseok Choi
IPC分类号： H02M3/335 , H02M1/32
CPC分类号： H02M3/33507 , H02M1/32
摘要： A resonant converter system includes a first stage having inverter circuitry and resonant tank circuitry configured to generate an AC signal from a DC input signal, a transformer configured to transform the AC signal, and a second stage. The second stage features synchronous rectifier (SR) circuitry including a plurality of SR switches each having a body diode and SR control circuitry. SR control circuitry is configured to generate gate control signals to control the conduction state of the SR switches so that the body diode conduction time is minimized and a negative current across the SR switches is reduced or eliminated. The method includes controlling the conduction state of SR switches to conduct as the body diode associated with the switch begins to conduct and controlling the SR switch to turn off as the current through the switch approaches a zero crossing.
摘要翻译：谐振转换器系统包括第一级，其具有被配置为从DC输入信号产生AC信号的逆变器电路和谐振回路电路，被配置为变换AC信号的变压器和第二级。第二级具有包括多个SR开关的同步整流器（SR）电路，每个SR开关具有体二极管和SR控制电路。 SR控制电路被配置为产生栅极控制信号以控制SR开关的导通状态，使得体二极管导通时间最小化，并且跨越SR开关的负电流减小或消除。该方法包括当与开关相关联的体二极管开始导通并控制SR开关截止时，控制SR开关的导通状态，因为通过开关的电流接近过零点。

4. 发明申请

US20120069605A1 SAMPLED CHARGE CONTROL FOR RESONANT CONVERTER 有权
标题翻译：谐振转换器采样充电控制
公开(公告)号：US20120069605A1
公开(公告)日：2012-03-22
申请号：US12884874
申请日：2010-09-17
申请人： Hangseok Choi
发明人： Hangseok Choi
IPC分类号： H02M3/335
CPC分类号： H02M3/337 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491
摘要： This document discusses, among other things, apparatus and methods for controlling a converter. In an example, a voltage-controlled oscillator (VCO) can be configured to provide a first pulse train to control the converter. The frequency of the first pulse train of the VCO can be modulated using information indicative of an operating condition of the converter to maintain a desired DC voltage at an output. In an example, the VCO can include a frequency divider configured to provide a second pulse train to the output using information from the first pulse train.
摘要翻译：本文件尤其涉及用于控制转换器的装置和方法。在一个示例中，压控振荡器（VCO）可以被配置为提供第一脉冲串来控制转换器。可以使用指示转换器的操作条件的信息来调制VCO的第一脉冲串的频率，以在输出端保持期望的DC电压。在一个示例中，VCO可以包括分频器，其被配置为使用来自第一脉冲串的信息向输出端提供第二脉冲串。

5. 发明授权

US09030183B2 Soft-start control techniques for a switched-mode power supply 有权
标题翻译：开关电源的软启动控制技术
公开(公告)号：US09030183B2
公开(公告)日：2015-05-12
申请号：US13508615
申请日：2012-04-25
申请人： Hangseok Choi
发明人： Hangseok Choi
IPC分类号： G05F1/00 , H02M3/02 , H02M1/36 , H02M3/156 , H02M3/335
CPC分类号： H02M3/02 , H02M1/36 , H02M3/156 , H02M3/335
摘要： A power supply system including switched-mode power supply circuitry configured to generate a DC output voltage from a DC input voltage and soft-start feedback circuitry configured to control the switched-mode power supply circuitry to generate a predefined output voltage during a soft-start period of operation. The soft-start feedback circuitry includes a controllable current source configured to generate a reference current and a reference voltage, wherein the reference current is based on a difference between the reference voltage and a feedback voltage proportional to the output voltage, and amplifier circuitry configured to compare the feedback voltage with the reference voltage and generate a control signal to control the operation of the switched-mode power supply during a soft-start period of operation.
摘要翻译：一种电源系统，包括被配置为从DC输入电压产生DC输出电压的开关模式电源电路和被配置成控制开关模式电源电路在软启动期间产生预定义的输出电压的软启动反馈电路经营期限软启动反馈电路包括被配置为产生参考电流和参考电压的可控电流源，其中参考电流基于参考电压和与输出电压成比例的反馈电压之间的差，以及被配置为将反馈电压与参考电压进行比较，并产生控制信号，以在软启动操作期间控制开关电源的工作。

6. 发明申请

US20140042994A1 Soft-Start Control Techniques for a Switched-Mode Power Supply 有权
标题翻译：用于开关电源的软启动控制技术
公开(公告)号：US20140042994A1
公开(公告)日：2014-02-13
申请号：US13508615
申请日：2012-04-25
申请人： Hangseok Choi
发明人： Hangseok Choi
IPC分类号： H02M3/02
CPC分类号： H02M3/02 , H02M1/36 , H02M3/156 , H02M3/335
摘要： A power supply system including switched-mode power supply circuitry configured to generate a DC output voltage from a DC input voltage and soft-start feedback circuitry configured to control the switched-mode power supply circuitry to generate a predefined output voltage during a soft-start period of operation. The soft-start feedback circuitry includes a controllable current source configured to generate a reference current and a reference voltage, wherein the reference current is based on a difference between the reference voltage and a feedback voltage proportional to the output voltage, and amplifier circuitry configured to compare the feedback voltage with the reference voltage and generate a control signal to control the operation of the switched-mode power supply during a soft-start period of operation.
摘要翻译：一种电源系统，包括被配置为从DC输入电压产生DC输出电压的开关模式电源电路和被配置成控制开关模式电源电路在软启动期间产生预定义的输出电压的软启动反馈电路经营期限软启动反馈电路包括被配置为产生参考电流和参考电压的可控电流源，其中参考电流基于参考电压和与输出电压成比例的反馈电压之间的差，以及被配置为将反馈电压与参考电压进行比较，并产生控制信号，以在软启动操作期间控制开关电源的工作。

7. 发明申请

US20120287679A1 SWITCHING TECHNIQUES TO REDUCE CURRENT OVERSHOOT IN A DC TO DC CONVERTER 有权
标题翻译：在直流到直流转换器中降低电流过载的开关技术
公开(公告)号：US20120287679A1
公开(公告)日：2012-11-15
申请号：US13453042
申请日：2012-04-23
申请人： Hangseok Choi
发明人： Hangseok Choi
IPC分类号： H02M3/335
CPC分类号： H02M1/36 , H02M3/33523 , H02M3/33569 , H02M2001/0058 , Y02B70/1433 , Y02B70/1491
摘要： A DC/DC converter system includes gate control circuitry, a transformer, a second stage, and soft start control circuitry. The gate control circuitry is configured to generate a first and a second gate control signal configured to open and close first and second switches of an inverter circuitry, respectively, to generate an AC signal from a DC input signal. The transformer transforms the AC signal and the second stage rectifies the AC signal to a DC output signal. The soft start control circuitry generates a signal to delay a closing of the first switch during an initial portion (Td) of a first cycle of the first switch. A method of soft-starting a DC/DC converter includes generating first and second gate control signals and delaying closing of the first switch during Td.
摘要翻译： DC / DC转换器系统包括门控电路，变压器，第二级和软启动控制电路。门控制电路被配置为产生分别用于打开和关闭逆变器电路的第一和第二开关的第一和第二栅极控制信号，以从DC输入信号产生AC信号。变压器变换交流信号，第二级将交流信号整流为直流输出信号。软启动控制电路在第一开关的第一周期的初始部分（Td）期间产生延迟第一开关闭合的信号。一种软启动DC / DC转换器的方法包括在Td期间产生第一和第二门控制信号并延迟第一开关的闭合。

8. 发明授权

US08482942B2 Method and apparatus for bridgeless power factor correction 有权
标题翻译：无桥功率因数校正的方法和装置
公开(公告)号：US08482942B2
公开(公告)日：2013-07-09
申请号：US12869416
申请日：2010-08-26
申请人： Hangseok Choi
发明人： Hangseok Choi
IPC分类号： H02M5/45 , H02M7/00
CPC分类号： H02M1/4208 , H02M1/4225 , H02M2001/0009 , Y02B70/126
摘要： This document discusses, among other things, an improved bridgeless power factor correction (PFC) circuit. In an example, the PFC circuit can include a first switch and a control circuit, the control circuit configured to provide a switching cycle, to generate a carrier signal corresponding to the switching cycle, and to generate a control signal for the first switch during the switching cycle. In an example, the control circuit can receive a first signal indicative of current through the first switch and generate a duty cycle for the first switch using a comparison of the first signal and the carrier signal. In an example, the control circuit can initiate the carrier signal at the beginning of the switching cycle and provide a carrier signal duration corresponding to a fraction of a duration of the switching cycle of the PFC circuit (e.g., one-half, one-third, etc.).
摘要翻译：本文件还讨论了改进的无桥功率因数校正（PFC）电路。在一个示例中，PFC电路可以包括第一开关和控制电路，所述控制电路被配置为提供开关周期以产生对应于开关周期的载波信号，并且在该期间生成用于第一开关的控制信号开关周期。在一个示例中，控制电路可以接收指示通过第一开关的电流的第一信号，并且使用第一信号和载波信号的比较来产生用于第一开关的占空比。在一个示例中，控制电路可以在开关周期开始时启动载波信号，并提供对应于PFC电路的开关周期持续时间的一小部分的载波信号持续时间（例如，二分之一，三分之一等）。

9. 发明申请

US20120051107A1 METHOD AND APPARATUS FOR BRIDGELESS POWER FACTOR CORRECTION 有权
标题翻译：无功功率因数校正方法与装置
公开(公告)号：US20120051107A1
公开(公告)日：2012-03-01
申请号：US12869416
申请日：2010-08-26
申请人： Hangseok Choi
发明人： Hangseok Choi
IPC分类号： H02M7/06
CPC分类号： H02M1/4208 , H02M1/4225 , H02M2001/0009 , Y02B70/126
摘要： This document discusses, among other things, an improved bridgeless power factor correction (PFC) circuit. In an example, the PFC circuit can include a first switch and a control circuit, the control circuit configured to provide a switching cycle, to generate a carrier signal corresponding to the switching cycle, and to generate a control signal for the first switch during the switching cycle. In an example, the control circuit can receive a first signal indicative of current through the first switch and generate a duty cycle for the first switch using a comparison of the first signal and the carrier signal. In an example, the control circuit can initiate the carrier signal at the beginning of the switching cycle and provide a carrier signal duration corresponding to a fraction of a duration of the switching cycle of the PFC circuit (e.g., one-half, one-third, etc.).
摘要翻译：本文件还讨论了改进的无桥功率因数校正（PFC）电路。在一个示例中，PFC电路可以包括第一开关和控制电路，所述控制电路被配置为提供开关周期以产生对应于开关周期的载波信号，并且在该期间生成用于第一开关的控制信号开关周期。在一个示例中，控制电路可以接收指示通过第一开关的电流的第一信号，并且使用第一信号和载波信号的比较来产生用于第一开关的占空比。在一个示例中，控制电路可以在开关周期开始时启动载波信号，并提供对应于PFC电路的开关周期持续时间的一小部分的载波信号持续时间（例如，二分之一，三分之一等）。

10. 发明授权

US08098505B1 Phase management for interleaved power factor correction 有权
标题翻译：交错功率因数校正的相位管理
公开(公告)号：US08098505B1
公开(公告)日：2012-01-17
申请号：US12506098
申请日：2009-07-20
申请人： Hangseok Choi
发明人： Hangseok Choi
IPC分类号： H02M1/42 , H02M7/23
CPC分类号： H02M1/4225 , H02M2001/0032 , H02M2003/1586 , Y02B70/126 , Y02B70/16
摘要： An interleaved power factor correction (PFC) circuit includes phase management to control shedding and adding of channels. The channels may be voltage (e.g., boost) converters connected in parallel. The interleaved PFC circuit can have a first channel and a second channel that operate out of phase of each other to provide input power to a load. In a two phase interleaved PFC circuit, the first and second channels operate 180 degrees out of phase. A channel may be shed or added depending on load conditions. The phase management can be configured to add or remove a channel only when the AC line input to the interleaved PFC circuit crosses zero.
摘要翻译：交错式功率因数校正（PFC）电路包括相位管理，用于控制通道的脱落和增加。通道可以是并联连接的电压（例如升压）转换器。交错PFC电路可以具有彼此相位操作以向负载提供输入功率的第一通道和第二通道。在两相交错PFC电路中，第一和第二通道工作180度异相。根据负载条件可能会丢弃或添加通道。只有当交错的PFC电路输入的交流线路穿过零时，相位管理才能配置为添加或删除通道。

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