公开(公告)号：US09118259B2

公开(公告)日：2015-08-25

申请号：US12315166

申请日：2008-11-28

申请人： Zhong Ye

发明人： Zhong Ye

IPC分类号： H02M7/493 ,  H02M7/5387 ,  H02M3/158

CPC分类号： H02M7/53871 ,  H02M7/493 ,  H02M2003/1586

摘要： Disclosed is a family of new DC/DC converters and a new control method. The converter comprises two bridge inverters, two full-wave rectification circuits and a current-doubler filter. Each inverter is able to generate a symmetrical and isolated AC output voltage. Phase-shift control is employed to control the phase difference between the two bridge inverters. By shifting the phase, the converter changes the two inverters' output voltage overlapping area to regulate its output voltage. The bridge inverters always operate at 50% duty cycle, like an open loop Bus Converter, to achieve wide-range zero voltage switching and eliminate circulating current for normal operation. For low output voltage regulation and soft start, Pulse Width Modulation (PWM) control is used. The converters and the control method improve power conversion efficiency, maximize magnetic component utilization, reduce semiconductor stress and decrease EMI emission.

公开(公告)号：US08971075B2

公开(公告)日：2015-03-03

申请号：US13365528

申请日：2012-02-03

申请人： Zhong Ye ,  Bosheng Sun

发明人： Zhong Ye ,  Bosheng Sun

IPC分类号： H02M7/217 ,  H02M1/42

CPC分类号： H02M1/4225 ,  Y02B70/126 ,  Y02P80/112

摘要： A method of operating a power factor correction (PFC) circuit and a corresponding power factor correction circuit include determining an adaptive switching frequency of the PFC circuit related to a current of the boost inductor of the PFC circuit, and operating the PFC circuit at a light load based on the adaptive switching frequency.

摘要翻译： 一种操作功率因数校正（PFC）电路和相应的功率因数校正电路的方法包括：确定与PFC电路的升压电感器的电流相关的PFC电路的自适应开关频率，以及以光照操作PFC电路 基于自适应切换频率的负载。

公开(公告)号：US20130155726A1

公开(公告)日：2013-06-20

申请号：US13329211

申请日：2011-12-16

申请人： Shanguang Xu ,  Zhong Ye

发明人： Shanguang Xu ,  Zhong Ye

IPC分类号： H02M3/335

CPC分类号： H02M3/33576 ,  H02M3/3378 ,  H02M2001/0025

摘要： The present invention provides a DC/DC converter for use with a DC input signal. The DC/DC converter includes a control signal generator, a primary and a secondary side, a voltage generating portion, a threshold voltage providing portion and a feedback signal generator. The control signal generator can control the primary side and the secondary side. The voltage generating portion can generate a surge voltage based a control signal from the control signal generator. The threshold voltage providing portion can generate a threshold voltage. The feedback signal generator can generate a feedback signal based on the surge voltage and the threshold voltage. The control signal generator can further modify control of one of the primary and secondary sides based on the feedback signal.

摘要翻译： 本发明提供一种用于与DC输入信号一起使用的DC / DC转换器。 DC / DC转换器包括控制信号发生器，初级和次级侧，电压产生部分，阈值电压提供部分和反馈信号发生器。 控制信号发生器可以控制一次侧和二次侧。 电压产生部分可以基于来自控制信号发生器的控制信号产生浪涌电压。 阈值电压提供部分可以产生阈值电压。 反馈信号发生器可以基于浪涌电压和阈值电压产生反馈信号。 控制信号发生器可以基于反馈信号进一步修改主侧和次侧之一的控制。

公开(公告)号：US5666041A

公开(公告)日：1997-09-09

申请号：US703445

申请日：1996-08-27

申请人： Thomas A. Stuart ,  Zhong Ye

发明人： Thomas A. Stuart ,  Zhong Ye

IPC分类号： H01M10/44 ,  H02J7/00

CPC分类号： H01M10/441 ,  H02J7/0018 ,  Y10S320/13

摘要： An electronic battery equalization circuit that equalizes the voltages of a plurality of series connected batteries in a battery pack. The current waveform is in the shape of a ramp for providing zero current switching. The ramp converter power circuit has at least one semiconductor device and a transformer coupled to the equalizing voltage supply source. The transformer has a primary winding circuit and at least one secondary winding circuit. In one embodiment, each secondary winding circuit is connected to a different pair of batteries. The equalizing current is provided to the lowest voltage batteries in one half of the battery pack during one half of the charging cycle. The equalizing current is then provided to the lowest voltage batteries in the other half of the battery pack during the other half of the charging cycle. In another embodiment, each secondary winding circuit is connected to a different single battery. The equalizing current is supplied to a lowest voltage battery in the battery pack during each half of the switching cycle. The electronic battery equalization circuit also includes a feedback control circuit coupled to the primary winding circuit for controlling the current from the equalizing current supply source.

摘要翻译： 一种使电池组中的多个串联电池的电压均衡的电子电池均衡电路。 电流波形呈斜坡形状，用于提供零电流切换。 斜坡转换器电源电路具有至少一个半导体器件和耦合到均衡电压源的变压器。 变压器具有初级绕组电路和至少一个次级绕组电路。 在一个实施例中，每个次级绕组电路连接到不同的一对电池。 在充电周期的一半期间，将均衡电流提供给电池组的一半中的最低电压电池。 然后在充电周期的另一半期间，将均衡电流提供给电池组的另一半中的最低电压电池。 在另一个实施例中，每个次级绕组电路连接到不同的单个电池。 在开关周期的每一半期间，均衡电流被提供给电池组中的最低电压电池。 电子电池均衡电路还包括耦合到初级绕组电路的反馈控制电路，用于控制来自均衡电流源的电流。

公开(公告)号：US09496828B2

公开(公告)日：2016-11-15

申请号：US13188948

申请日：2011-07-22

申请人： Zhong Ye

发明人： Zhong Ye

IPC分类号： H02M3/335 ,  H03F1/02 ,  H03F1/32 ,  H03F3/189 ,  H03F3/24

CPC分类号： H03F1/025 ,  H03F1/3241 ,  H03F3/189 ,  H03F3/245 ,  H03F2200/507 ,  H03F2200/511 ,  H03F2200/555

摘要： An envelope tracking power supply has a multiple-output DC/DC converter, having an alternating current generating portion and a full rectifying portion. The alternating current generating portion to receive an input voltage and operate at zero voltage switching. A full rectifying portion includes at least one secondary winding and one voltage doubler output. each having a first transistor, and a second transistor, used as rectifier devices to allow currents to flow bi-directionally and sink and source the currents from and to output capacitors to keep their voltage balance. A switch bank selects a desired voltage from series connected capacitors and connects it to an output filter. The switch bank receives an envelope tracking command from the voltage selector and provides a step voltage to the output. The output voltage is changed at switching speed to track a high bandwidth envelope signal.

摘要翻译： 信封跟踪电源具有多输出DC / DC转换器，具有交流产生部分和全整流部分。 交流发电部分，用于接收输入电压并在零电压切换时工作。 全整流部分包括至少一个次级绕组和一个倍压器输出。 每个具有第一晶体管和第二晶体管，用作整流器件，以允许电流双向流动，并且从电流和输出电容器吸收和输出电流以保持其电压平衡。 开关组从串联的电容器中选择所需的电压并将其连接到输出滤波器。 开关组从电压选择器接收包络跟踪命令，并向输出端提供阶跃电压。 输出电压以切换速度改变，以跟踪高带宽包络信号。

公开(公告)号：US08891269B2

公开(公告)日：2014-11-18

申请号：US13269919

申请日：2011-10-10

申请人： Zhong Ye ,  Shanguang Xu

发明人： Zhong Ye ,  Shanguang Xu

IPC分类号： H02M7/44 ,  H02M1/40 ,  H02M3/337

CPC分类号： H02M1/40 ,  H02M3/337

摘要： Methods and circuits for balancing current in a transformer are disclosed herein. An embodiment of the method includes sensing the magnitude and direction of current flow through the primary side of the transformer. The magnitude of current flowing in a first direction is compared to the magnitude of current flowing in a second direction through the primary side of the transformer. An AC signal driving the primary side of the transformer is adjusted so that the current flow in the first direction is substantially the same as current flow in the second direction.

摘要翻译： 本文公开了用于平衡变压器中的电流的方法和电路。 该方法的实施例包括感测通过变压器初级侧的电流的大小和方向。 将沿第一方向流动的电流的大小与通过变压器的初级侧在第二方向上流动的电流的大小进行比较。 调整驱动变压器一次侧的交流信号，使得第一方向的电流与第二方向的电流大致相同。

公开(公告)号：US08675375B2

公开(公告)日：2014-03-18

申请号：US13329211

申请日：2011-12-16

申请人： Shanguang Xu ,  Zhong Ye

发明人： Shanguang Xu ,  Zhong Ye

IPC分类号： H02M3/335

CPC分类号： H02M3/33576 ,  H02M3/3378 ,  H02M2001/0025

摘要： The present invention provides a DC/DC converter for use with a DC input signal. The DC/DC converter includes a control signal generator, a primary and a secondary side, a voltage generating portion, a threshold voltage providing portion and a feedback signal generator. The control signal generator can control the primary side and the secondary side. The voltage generating portion can generate a surge voltage based a control signal from the control signal generator. The threshold voltage providing portion can generate a threshold voltage. The feedback signal generator can generate a feedback signal based on the surge voltage and the threshold voltage. The control signal generator can further modify control of one of the primary and secondary sides based on the feedback signal.

摘要翻译： 本发明提供一种用于与DC输入信号一起使用的DC / DC转换器。 DC / DC转换器包括控制信号发生器，初级和次级侧，电压产生部分，阈值电压提供部分和反馈信号发生器。 控制信号发生器可以控制一次侧和二次侧。 电压产生部分可以基于来自控制信号发生器的控制信号产生浪涌电压。 阈值电压提供部分可以产生阈值电压。 反馈信号发生器可以基于浪涌电压和阈值电压产生反馈信号。 控制信号发生器可以基于反馈信号进一步修改主侧和次侧之一的控制。

公开(公告)号：US20120274290A1

公开(公告)日：2012-11-01

申请号：US13097644

申请日：2011-04-29

申请人： Zhong Ye ,  Shamim Choudhury ,  Chris Michael Franklin

发明人： Zhong Ye ,  Shamim Choudhury ,  Chris Michael Franklin

IPC分类号： G05F1/10

CPC分类号： H02M3/156

摘要： In a first aspect, a control circuit is provided for use with a switch-mode power stage that provides an output voltage signal and an output current signal at an output power. The switch-mode power stage has a nominal voltage, a nominal current, a maximum current, an output power and a maximum power. The control circuit includes a voltage control loop and a current control loop, and the control circuit uses the voltage control loop to provide voltage mode control if the output current signal is greater than or equal to the nominal current and less than the maximum current, wherein the output power is substantially constant. Numerous other aspects are also provided.

摘要翻译： 在第一方面，提供了一种用于提供输出电压信号和输出电流信号的开关模式功率级的控制电路。 开关模式功率级具有额定电压，额定电流，最大电流，输出功率和最大功率。 控制电路包括电压控制回路和电流控制回路，如果输出电流信号大于或等于额定电流且小于最大电流，则控制电路使用电压控制回路来提供电压模式控制，其中 输出功率基本恒定。 还提供了许多其他方面。

公开(公告)号：US08018740B2

公开(公告)日：2011-09-13

申请号：US12683743

申请日：2010-01-07

申请人： Bosheng Sun ,  Yuwei Luo ,  Zhong Ye

发明人： Bosheng Sun ,  Yuwei Luo ,  Zhong Ye

IPC分类号： H02M3/335 ,  H02M1/00

CPC分类号： H02M3/33569 ,  H02M1/36 ,  Y02B70/1433

摘要： An embodiment of the invention provides a method of reducing surge current in an LLC converter. The LLC converter comprises a switching circuit having a first switch and a second switch, a resonant circuit, and a rectification circuit. During start up of the LLC converter, first and second signals having a fixed period and a variable duty cycle are applied to the first and second switches respectively. When a predetermined voltage on a load configured to be coupled to the rectification circuit is reached, the first and second signals are changed to signals having a variable period and a fixed duty cycle.

摘要翻译： 本发明的实施例提供了一种在LLC转换器中减少浪涌电流的方法。 LLC转换器包括具有第一开关和第二开关，谐振电路和整流电路的开关电路。 在LLC转换器启动期间，具有固定周期和可变占空比的第一和第二信号分别施加到第一和第二开关。 当达到配置为耦合到整流电路的负载上的预定电压达到时，第一和第二信号被改变为具有可变周期和固定占空比的信号。

公开(公告)号：US20130088895A1

公开(公告)日：2013-04-11

申请号：US13269919

申请日：2011-10-10

申请人： Zhong Ye ,  Shanguang Xu

发明人： Zhong Ye ,  Shanguang Xu

IPC分类号： H02M3/335

CPC分类号： H02M1/40 ,  H02M3/337

摘要： Methods and circuits for balancing current in a transformer are disclosed herein. An embodiment of the method includes sensing the magnitude and direction of current flow through the primary side of the transformer. The magnitude of current flowing in a first direction is compared to the magnitude of current flowing in a second direction through the primary side of the transformer. An AC signal driving the primary side of the transformer is adjusted so that the current flow in the first direction is substantially the same as current flow in the second direction.

摘要翻译： 本文公开了用于平衡变压器中的电流的方法和电路。 该方法的实施例包括感测通过变压器初级侧的电流的大小和方向。 将沿第一方向流动的电流的大小与通过变压器的初级侧在第二方向上流动的电流的大小进行比较。 调整驱动变压器一次侧的交流信号，使得第一方向的电流与第二方向的电流大致相同。