公开(公告)号：US20100109613A1

公开(公告)日：2010-05-06

申请号：US12344277

申请日：2008-12-25

申请人： Yung-Chun Chuang ,  Yu-Min Sun ,  Chien-Chuan Chung

发明人： Yung-Chun Chuang ,  Yu-Min Sun ,  Chien-Chuan Chung

IPC分类号： H02J7/00 ,  H03K17/56

CPC分类号： H03K17/6877 ,  H03K19/018507

摘要： A switch control circuit has a voltage sensing function. The switch control circuit includes a voltage-clamping buffer, a set driver, a reset driver, and an R-dominant SR latch. The voltage-clamping buffer shifts a switch voltage to generate a down-shifted switch voltage. The set driver generates a set signal according to the down-shifted switch voltage. The reset driver generates a reset signal according to the down-shifted switch voltage. The R-dominant SR latch comprises a set end for receiving the set signal, a reset end for receiving the reset signal, an output end for outputting a switch control signal for controlling conductance of a first transistor coupled to a primary winding of a transformer, and an output bar end for outputting an inverted switch control signal.

摘要翻译： 开关控制电路具有电压检测功能。 开关控制电路包括电压钳位缓冲器，设置驱动器，复位驱动器和R优势SR锁存器。 钳位缓冲器移位开关电压以产生下移开关电压。 设定驱动器根据下移开关电压产生一个设定信号。 复位驱动器根据下移开关电压产生复位信号。 R优势SR锁存器包括用于接收设置信号的设置端，用于接收复位信号的复位端，用于输出用于控制耦合到变压器的初级绕组的第一晶体管的电导的开关控制信号的输出端， 以及用于输出反相开关控制信号的输出条端。

公开(公告)号：US20080205099A1

公开(公告)日：2008-08-28

申请号：US11783556

申请日：2007-04-10

申请人： Chien Chuan Chung ,  Chu Yu Chu ,  Yu Min Sun

发明人： Chien Chuan Chung ,  Chu Yu Chu ,  Yu Min Sun

IPC分类号： H02M3/315

CPC分类号： H02M3/1584 ,  H02M3/33569

摘要： The power transistor circuit with high-voltage endurance includes a first power transistor, a second power transistor and an enabling circuit. The first power transistor includes a first voltage endurance and a first inner resistance, while the second power transistor includes a second voltage endurance and a second inner resistance. The first voltage endurance and the first inner resistance are smaller than the second voltage endurance and the second inner resistance, respectively. The drain of the second power transistor is connected to the drain of the first power transistor and the enabling circuit. The enabling circuit enables the second power transistor first, and when the drain voltage of the first power transistor is smaller than the first endurance, the enabling circuit then enables the first power transistor.

摘要翻译： 具有高电压耐久性的功率晶体管电路包括第一功率晶体管，第二功率晶体管和使能电路。 第一功率晶体管包括第一电压耐受性和第一内部电阻，而第二功率晶体管包括第二电压耐力和第二内部电阻。 第一耐压和第一内阻分别小于第二耐压和第二内阻。 第二功率晶体管的漏极连接到第一功率晶体管的漏极和使能电路。 使能电路首先使能第二功率晶体管，并且当第一功率晶体管的漏极电压小于第一耐受性时，使能电路然后启用第一功率晶体管。

公开(公告)号：US20100103575A1

公开(公告)日：2010-04-29

申请号：US12350248

申请日：2009-01-08

申请人： Yung-Chun Chuang ,  Yu-Min Sun ,  Chien-Chuan Chung

发明人： Yung-Chun Chuang ,  Yu-Min Sun ,  Chien-Chuan Chung

IPC分类号： H02H3/00

CPC分类号： H02J7/345 ,  H02M1/32 ,  H02M1/36 ,  H02M3/33507

摘要： A floating protection circuit is utilized for a photo-flash capacitor charger. The floating protection circuit includes a comparator and a timer. The comparator is coupled between two feedback resistors of the photo-flash capacitor charger for receiving a feedback voltage. When the feedback voltage is lower than an offset voltage, the comparator outputs a reset signal. If the timer does not receive the reset signal for a predetermined time, the timer outputs a turn-off signal to a switch control circuit of the photo-flash capacitor charger to shut down the switch control circuit.

摘要翻译： 浮动保护电路用于照相闪光电容器充电器。 浮动保护电路包括比较器和定时器。 比较器耦合在闪光电容器充电器的两个反馈电阻之间，用于接收反馈电压。 当反馈电压低于偏移电压时，比较器输出复位信号。 如果定时器在预定时间内没有接收到复位信号，则定时器将关闭信号输出到闪光电容器充电器的开关控制电路以关闭开关控制电路。

公开(公告)号：US07671657B1

公开(公告)日：2010-03-02

申请号：US12252369

申请日：2008-10-16

申请人： Chih-Chia Chen ,  Chien-Chuan Chung

发明人： Chih-Chia Chen ,  Chien-Chuan Chung

IPC分类号： H03L5/00

CPC分类号： H03K19/018521

摘要： A voltage level shifter with voltage boost mechanism is disclosed for interfacing two circuit units having different operating voltage swings. The voltage level shifter includes a first inverter, a second inverter, a first capacitor, a second capacitor and a plurality of transistors. The input and power ends of the first inverter function to receive an input voltage and a first voltage respectively. The output end of the second inverter functions to provide an output voltage. When the input voltage is a ground voltage, the output voltage is also a ground voltage; meanwhile, the switches are controlled for charging the first and second capacitors to a second voltage and a third voltage respectively. When the input voltage is the first voltage, a sum voltage of the first, second, and third voltages is furnished to the power end of the second inverter for providing the sum voltage as the output voltage.

摘要翻译： 公开了一种具有升压机构的电压电平移位器，用于连接具有不同工作电压摆幅的两个电路单元。 电压电平移位器包括第一反相器，第二反相器，第一电容器，第二电容器和多个晶体管。 第一反相器的输入端和电源端分别接收输入电压和第一电压。 第二反相器的输出端用于提供输出电压。 当输入电压为接地电压时，输出电压也为接地电压; 同时，控制开关以将第一和第二电容器分别充电到第二电压和第三电压。 当输入电压为第一电压时，将第一，第二和第三电压的和电压提供给第二逆变器的功率端，以提供和电压作为输出电压。

公开(公告)号：US07495499B2

公开(公告)日：2009-02-24

申请号：US11783556

申请日：2007-04-10

申请人： Chien Chuan Chung ,  Chu Yu Chu ,  Yu Min Sun

发明人： Chien Chuan Chung ,  Chu Yu Chu ,  Yu Min Sun

IPC分类号： H03K17/687

CPC分类号： H02M3/1584 ,  H02M3/33569

摘要： The power transistor circuit with high-voltage endurance includes a first power transistor, a second power transistor and an enabling circuit. The first power transistor includes a first voltage endurance and a first inner resistance, while the second power transistor includes a second voltage endurance and a second inner resistance. The first voltage endurance and the first inner resistance are smaller than the second voltage endurance and the second inner resistance, respectively. The drain of the second power transistor is connected to the drain of the first power transistor and the enabling circuit. The enabling circuit enables the second power transistor first, and when the drain voltage of the first power transistor is smaller than the first endurance, the enabling circuit then enables the first power transistor.

摘要翻译： 具有高电压耐久性的功率晶体管电路包括第一功率晶体管，第二功率晶体管和使能电路。 第一功率晶体管包括第一电压耐受性和第一内部电阻，而第二功率晶体管包括第二电压耐力和第二内部电阻。 第一耐压和第一内阻分别小于第二耐压和第二内阻。 第二功率晶体管的漏极连接到第一功率晶体管的漏极和使能电路。 使能电路首先使能第二功率晶体管，并且当第一功率晶体管的漏极电压小于第一耐受性时，使能电路然后启用第一功率晶体管。

公开(公告)号：US20100060339A1

公开(公告)日：2010-03-11

申请号：US12252369

申请日：2008-10-16

申请人： Chih-Chia Chen ,  Chien-Chuan Chung

发明人： Chih-Chia Chen ,  Chien-Chuan Chung

IPC分类号： H03L5/00

CPC分类号： H03K19/018521

摘要： A voltage level shifter with voltage boost mechanism is disclosed for interfacing two circuit units having different operating voltage swings. The voltage level shifter includes a first inverter, a second inverter, a first capacitor, a second capacitor and a plurality of transistors. The input and power ends of the first inverter function to receive an input voltage and a first voltage respectively. The output end of the second inverter functions to provide an output voltage. When the input voltage is a ground voltage, the output voltage is also a ground voltage; meanwhile, the switches are controlled for charging the first and second capacitors to a second voltage and a third voltage respectively. When the input voltage is the first voltage, a sum voltage of the first, second, and third voltages is furnished to the power end of the second inverter for providing the sum voltage as the output voltage.

摘要翻译： 公开了一种具有升压机构的电压电平移位器，用于连接具有不同工作电压摆幅的两个电路单元。 电压电平移位器包括第一反相器，第二反相器，第一电容器，第二电容器和多个晶体管。 第一反相器的输入端和电源端分别接收输入电压和第一电压。 第二反相器的输出端用于提供输出电压。 当输入电压为接地电压时，输出电压也为接地电压; 同时，控制开关以将第一和第二电容器分别充电到第二电压和第三电压。 当输入电压为第一电压时，将第一，第二和第三电压的和电压提供给第二逆变器的功率端，以提供和电压作为输出电压。