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1. 发明授权

US08773040B2 Indicator drive circuit 有权
标题翻译：指示灯驱动电路
公开(公告)号：US08773040B2
公开(公告)日：2014-07-08
申请号：US13334597
申请日：2011-12-22
申请人： Yusuke Kamiya , Satoki Uruno , Junichi Matsubara
发明人： Yusuke Kamiya , Satoki Uruno , Junichi Matsubara
IPC分类号： H05B37/02 , H05B33/08
CPC分类号： H05B33/0812 , Y02B20/345
摘要： An indicator drive circuit includes a current mirror circuit including a first transistor located at a control side and a second transistor located at a controlled side, a current through the current mirror circuit being switched by an external control signal, a current source adapted to feed a control current to the first transistor of the current mirror circuit, and a switching element adapted to be driven by a current through the second transistor of the current mirror circuit and to switch on or off an indicator light source. The current source includes two transistors cascode-connected.
摘要翻译：指示器驱动电路包括电流镜电路，其包括位于控制侧的第一晶体管和位于受控一侧的第二晶体管，通过电流镜电路的电流由外部控制信号切换，电流源适于馈送控制到电流镜电路的第一晶体管的电流，以及适于由电流镜电路的第二晶体管的电流驱动的开关元件，以及接通或断开指示光源。电流源包括两个共源共栅晶体管。

2. 发明申请

US20100097737A1 LOAD DRIVING DEVICE 审中-公开
标题翻译：负载驱动装置
公开(公告)号：US20100097737A1
公开(公告)日：2010-04-22
申请号：US12581589
申请日：2009-10-19
申请人： Manabu HIRATA , Satoki Uruno , Hiroki Kishi , Junichi Matsubara , Yuichiro Mori , Michiyoshi Shimizu
发明人： Manabu HIRATA , Satoki Uruno , Hiroki Kishi , Junichi Matsubara , Yuichiro Mori , Michiyoshi Shimizu
IPC分类号： H02H3/08
CPC分类号： H02H7/0816 , H02H7/0838
摘要： A load driving device including a semiconductor switch arranged in a current path extending from a power supply to a load. A control circuit controls activation and deactivation of the semiconductor switch. The control circuit deactivates the semiconductor switch when it is determined that overcurrent is flowing through the current path. A current detector detects current that is flowing through the current path. The control circuit determines that overcurrent is flowing when the current detector continuously detects current that is greater than a threshold value over a predetermined detection time. The detection time is set to be shorter than the time from when the current in the current path exceeds the threshold value to when an increase in resistance value of the semiconductor switch resulting from heat generated by the current lowers the current to the threshold value.
摘要翻译：一种负载驱动装置，包括布置在从电源延伸到负载的电流路径中的半导体开关。控制电路控制半导体开关的激活和去激活。当确定过电流流过电流路径时，控制电路使半导体开关去激活。电流检测器检测流过电流路径的电流。当电流检测器在预定检测时间内连续地检测到大于阈值的电流时，控制电路确定过电流正在流动。检测时间被设定为短于从电流通路中的电流超过阈值的时间到由电流产生的热导致的半导体开关的电阻值的增加将电流降至阈值的时间。

3. 发明申请

US20090026993A1 LOAD DRIVE CONTROL CIRCUIT 审中-公开
标题翻译：负载驱动控制电路
公开(公告)号：US20090026993A1
公开(公告)日：2009-01-29
申请号：US12179346
申请日：2008-07-24
申请人： Yasushi Nishibe , Satoki Uruno , Takashi Nagao , Satoshi Chikazawa
发明人： Yasushi Nishibe , Satoki Uruno , Takashi Nagao , Satoshi Chikazawa
IPC分类号： H02P31/00
CPC分类号： H02P7/04
摘要： A load drive control circuit includes a drive circuit for driving a load. A control circuit, connected to the drive circuit by diagnostic lines, provides the drive circuit with a control command that specifies an operation state. The drive circuit drives the load in the operation state specified by the control command, generates a diagnostic output including diagnostic notification signals each having an H level or an L level, and provides the diagnostic notification signals of the diagnostic output to the control circuit. A signal output unit outputs first and second diagnostic outputs respectively in response to the first and second control command from the control circuit. A diagnostic line failure determination unit checks whether the first and second diagnostic outputs are both normal to determine whether the diagnostic lines includes a failure or not.
摘要翻译：负载驱动控制电路包括用于驱动负载的驱动电路。通过诊断线连接到驱动电路的控制电路为驱动电路提供指定操作状态的控制命令。驱动电路在由控制指令指定的运行状态下驱动负载，产生包括诊断通知信号的诊断输出，每个具有H电平或L电平，并将诊断输出的诊断通知信号提供给控制电路。信号输出单元响应于来自控制电路的第一和第二控制命令分别输出第一和第二诊断输出。诊断线路故障确定单元检查第一和第二诊断输出是否都是正常的，以确定诊断线路是否包括故障。

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