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公开(公告)号：US12104565B2
公开(公告)日：2024-10-01
申请号：US18526180
申请日：2023-12-01
Applicant: ROHM CO., LTD.
Inventor： Hiroyuki Tanigawa , Atsushi Taguchi
CPC classification number: F02P7/022 , H01L24/49 , H01L27/0266 , F02P3/093 , F02P2017/121 , H01L2224/4912
Abstract: Provided is an igniter capable of reducing occurrence of malfunction due to noise. An igniter (100) includes a switch element (111) having a first end, a temperature sensor (112) including at least one diode and having a cathode end (112B), a switch element control device (12) configured to control the switch element, and a switch element electrode (Pe) connected to the first end of the switch element and to the cathode end, and the switch element control device has a ground electrode (Pgnd) electrically isolated from the cathode end.
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公开(公告)号：US09800024B2
公开(公告)日：2017-10-24
申请号：US14935763
申请日：2015-11-09
Applicant: Rohm Co., Ltd.
Inventor： Katsuya Obe , Hiroyuki Tanigawa
CPC classification number: H01T15/00 , F02P3/0453 , F02P5/1502 , F02P11/00 , F02P17/12 , F02P2017/121
Abstract: An igniter that includes switch element and switch control device for controlling the switch element depending on ignition signal. The switch control device includes a determination stage that compares voltage associated with the ignition signal with a predetermined voltage to generate a determination signal, a driving stage that controls ON/OFF operations of the switch element depending on the determination signal, a timer circuit that asserts a conduction protection signal when state where the determination signal becomes an assert level corresponding to an ON operation of the switch element continues for predetermined time, a time-varying voltage generating circuit that generates time-varying voltage over time in response to the assertion of the conduction protection signal, and an amplifier that changes the voltage of a control terminal of the switch element such that detection voltage associated with coil current flowing in the switch element is close to the time-varying voltage.
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公开(公告)号：US20160134085A1
公开(公告)日：2016-05-12
申请号：US14935763
申请日：2015-11-09
Applicant: Rohm Co., Ltd.
Inventor： Katsuya Obe , Hiroyuki Tanigawa
CPC classification number: H01T15/00 , F02P3/0453 , F02P5/1502 , F02P11/00 , F02P17/12 , F02P2017/121
Abstract: An igniter that includes switch element and switch control device for controlling the switch element depending on ignition signal. The switch control device includes a determination stage that compares voltage associated with the ignition signal with a predetermined voltage to generate a determination signal, a driving stage that controls ON/OFF operations of the switch element depending on the determination signal, a timer circuit that asserts a conduction protection signal when state where the determination signal becomes an assert level corresponding to an ON operation of the switch element continues for predetermined time, a time-varying voltage generating circuit that generates time-varying voltage over time in response to the assertion of the conduction protection signal, and an amplifier that changes the voltage of a control terminal of the switch element such that detection voltage associated with coil current flowing in the switch element is close to the time-varying voltage.
Abstract translation: 一种点火器，其包括用于根据点火信号控制开关元件的开关元件和开关控制装置。 开关控制装置包括：判定级，其将与点火信号相关联的电压与预定电压进行比较以产生判定信号;驱动级，其根据判定信号控制开关元件的接通/断开动作;定时器电路，断言 当确定信号变为与开关元件的导通操作相对应的置位电平的状态时，导通保护信号继续预定时间，时变电压产生电路响应于断言而产生时间变化的电压 导通保护信号和放大器，其改变开关元件的控制端子的电压，使得与在开关元件中流动的线圈电流相关联的检测电压接近时变电压。
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