公开(公告)号：US20110298528A1

公开(公告)日：2011-12-08

申请号：US13052269

申请日：2011-03-21

Applicant: Koichi Endo ,  Yukio Tsunetsugu ,  Kazutoshi Nakamura

Inventor： Koichi Endo ,  Yukio Tsunetsugu ,  Kazutoshi Nakamura

IPC: H03K3/011

CPC classification number: H03K19/00369 ,  H01L2224/05554 ,  H01L2224/0603 ,  H01L2224/48137 ,  H01L2224/48247 ,  H01L2924/1305 ,  H01L2924/13055 ,  H01L2924/13091 ,  H03K17/6871 ,  H03K2017/0806 ,  H01L2924/00

Abstract: According to one embodiment, a power semiconductor system includes; a first power semiconductor element, a driver IC, a first temperature detection element, a control circuit and an overheat protection control section. The first power semiconductor element controls current flowing between a first electrode and a second electrode with a control electrode. The driver IC supplies a drive signal making the first power semiconductor element on and off. The first temperature detection element detects a temperature of the driver IC. The control circuit supplies a control signal for controlling operation of the driver IC to the driver IC. The overheat protection control section is configured to supply an overheat protection signal to the control circuit based on an output of the first temperature detection element. The control circuit performs overheat protection operation. The overheat protection control section supplies the overheat protection signal to the control circuit.

Abstract translation: 根据一个实施例，功率半导体系统包括： 第一功率半导体元件，驱动器IC，第一温度检测元件，控制电路和过热保护控制部。 第一功率半导体元件通过控制电极控制在第一电极和第二电极之间流动的电流。 驱动器IC提供使第一功率半导体元件接通和断开的驱动信号。 第一温度检测元件检测驱动器IC的温度。 控制电路向驱动器IC提供用于控制驱动器IC的操作的控制信号。 过热保护控制部根据第一温度检测元件的输出，将过热保护信号提供给控制电路。 控制电路进行过热保护动作。 过热保护控制部分将过热保护信号提供给控制电路。

公开(公告)号：US5646514A

公开(公告)日：1997-07-08

申请号：US322349

申请日：1994-10-13

Applicant: Yukio Tsunetsugu

Inventor： Yukio Tsunetsugu

IPC: G05F1/565 ,  H02M7/06 ,  H02M7/217 ,  H03K17/00 ,  H03K17/30 ,  G05F1/40

CPC classification number: H02M7/2176 ,  G05F1/565

Abstract: An AC/DC converter includes a rectifying circuit, a main switching device constituted by an N-channel IGBT or an N-channel FET, a control circuit, a booster circuit, and a series power supply circuit. The rectifying circuit rectifies a half wave of an input AC voltage. One end of the current path of the main switching device is supplied with a half-wave rectifying output from the rectifying circuit. The control circuit turns on the main switching device when a voltage between the gate and the other end of the main switching device exceeds a first level, and turns off the main switching device when the voltage exceeds a second level which is higher than the first level. The booster circuit boosts the voltage between the gate and the other end of the main switching device to a level which is higher than the second level when the voltage exceeds the first level. The series power supply circuit has an input terminal to which the other end of the current path of the main switching device is connected, and outputs a DC voltage.

Abstract translation: AC / DC转换器包括整流电路，由N沟道IGBT或N沟道FET构成的主开关器件，控制电路，升压电路和串联电源电路。 整流电路对输入交流电压的半波进行整流。 主开关装置的电流路径的一端被提供有来自整流电路的半波整流输出。 当主开关器件的栅极和另一端之间的电压超过第一电平时，控制电路接通主开关器件，并且当电压超过高于第一电平的第二电平时，断开主开关器件 。 当电压超过第一电平时，升压电路将主开关器件的栅极和另一端之间的电压升高到高于第二电平的电平。 串联电源电路具有与主开关装置的电流路径的另一端连接的输入端子，并输出直流电压。

公开(公告)号：US08803116B2

公开(公告)日：2014-08-12

申请号：US13412462

申请日：2012-03-05

Applicant: Yukio Tsunetsugu

Inventor： Yukio Tsunetsugu

IPC: G02B27/00

CPC classification number: H03K17/78 ,  G01J1/18 ,  G01J1/44 ,  H03K5/2481

Abstract: According to a receiving circuit includes a light receiving element, a signal voltage generation portion, a comparator, a reference voltage generation portion and a switch. The light receiving element receives a light signal and outputs a light current corresponding to the light signal. The signal voltage generation portion converts the light current into a signal voltage and outputs the signal voltage. The comparator compares the signal voltage with a first threshold value or a second threshold value. The reference voltage generation portion outputs a reference voltage input to the comparator. The switch changes the reference voltage to one of the first threshold value and the second threshold value based on an output of the comparator.

Abstract translation: 根据接收电路包括光接收元件，信号电压产生部分，比较器，参考电压产生部分和开关。 光接收元件接收光信号并输出​​与光信号对应的光电流。 信号电压产生部分将光电流转换为信号电压并输出信号电压。 比较器将信号电压与第一阈值或第二阈值进行比较。 参考电压产生部分输出输入到比较器的参考电压。 该开关基于比较器的输出将参考电压改变为第一阈值和第二阈值之一。