专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US09417274B2 Electric circuit evaluation method 有权
标题翻译：电路评估方法
公开(公告)号：US09417274B2
公开(公告)日：2016-08-16
申请号：US14301536
申请日：2014-06-11
申请人： ROHM CO., LTD.
发明人： Noriaki Hiraga , Katsunori Kido
IPC分类号： G01R31/00
CPC分类号： G01R31/002
摘要： The electric circuit evaluation method according to the present invention is characterized in that a designated electric circuit is placed inside a shield structure, a noise signal for a malfunction test is inputted to the designated electric circuit, a short-circuit is established between a ground of the shield structure and a ground of a noise source for inputting a noise signal for a malfunction test to the designated electric circuit, and the ground of the designated electric circuit and the ground of the shield structure are isolated.
摘要翻译：根据本发明的电路评估方法的特征在于，将指定的电路放置在屏蔽结构内部，将用于故障测试的噪声信号输入到指定的电路，建立短路屏蔽结构和噪声源的接地，用于向指定的电路输入用于故障测试的噪声信号，并且隔离指定的电路和屏蔽结构的接地。

2. 发明授权

US10551422B2 Method of evaluating device including noise source 有权
公开(公告)号：US10551422B2
公开(公告)日：2020-02-04
申请号：US14506853
申请日：2014-10-06
申请人： Rohm Co., Ltd.
发明人： Noriaki Hiraga
IPC分类号： G01R31/00 , G01R23/163
摘要： A method of evaluating a device includes a first electric circuit acting as a noise source and a second electric circuit which is likely to malfunction due to a noise signal. The method includes: obtaining malfunction frequency characteristics indicating magnitudes of a threshold noise signal causing malfunction of the second electric circuit; obtaining internal noise arrival frequency characteristics indicating magnitudes of an internal noise signal arriving at the second electric circuit from the first electric circuit; and comparing the malfunction frequency characteristics with the internal noise arrival frequency characteristics.

3. 发明申请

US20150097575A1 METHOD OF EVALUATING DEVICE INCLUDING NOISE SOURCE 审中-公开
标题翻译：包括噪声源的设备评估方法
公开(公告)号：US20150097575A1
公开(公告)日：2015-04-09
申请号：US14506853
申请日：2014-10-06
申请人： Rohm Co., Ltd.
发明人： Noriaki Hiraga
IPC分类号： G01R31/00 , G01R23/00
摘要： A method of evaluating a device includes a first electric circuit acting as a noise source and a second electric circuit which is likely to malfunction due to a noise signal. The method includes: obtaining malfunction frequency characteristics indicating magnitudes of a threshold noise signal causing malfunction of the second electric circuit; obtaining internal noise arrival frequency characteristics indicating magnitudes of an internal noise signal arriving at the second electric circuit from the first electric circuit; and comparing the malfunction frequency characteristics with the internal noise arrival frequency characteristics.
摘要翻译：评估装置的方法包括作为噪声源的第一电路和由于噪声信号而可能发生故障的第二电路。该方法包括：获取指示导致第二电路故障的阈值噪声信号的大小的故障频率特性; 获得表示从第一电路到达第二电路的内部噪声信号的大小的内部噪声到达频率特性; 并将故障频率特性与内部噪声到达频率特性进行比较。

4. 发明申请

US20230059379A1 METHOD OF COMPUTER SIMULATION 有权
公开(公告)号：US20230059379A1
公开(公告)日：2023-02-23
申请号：US17797263
申请日：2021-01-29
申请人： Rohm Co., Ltd.
发明人： Noriaki Hiraga
IPC分类号： G01R31/00 , G06F30/20
摘要： A method of computer simulation is for evaluating the immunity characteristics of a device-under-test by use of a transmission line model that models a transmission line connected to the device-under-test. The method includes a characteristic change node at which parameters representing the transmission characteristics of the transmission line change midway.

5. 发明授权

US09989570B2 Method for evaluating device including plurality of electric circuits 有权
公开(公告)号：US09989570B2
公开(公告)日：2018-06-05
申请号：US14320733
申请日：2014-07-01
申请人： ROHM CO., LTD.
发明人： Noriaki Hiraga
IPC分类号： G01R31/00 , G01R31/28 , G01R31/30
CPC分类号： G01R31/002 , G01R31/2822 , G01R31/3004
摘要： A method for evaluating a device including a plurality of electric circuits has: a step of finding a first malfunction frequency property for individual electric circuits included in the device, the first malfunction frequency property representing the magnitude of a critical noise signal at which each electric circuit causes a malfunction; and a step of finding a second malfunction frequency property based on the first malfunction frequency property found for each of the electric circuits, an equivalent circuit of the entire device, and an equivalent circuit of each of the electric circuits, the second malfunction frequency property representing the magnitude of a critical noise signal at which the entire device causes a malfunction.

6. 发明授权

US09662985B2 Control circuit for step-up DC/DC converter 有权
公开(公告)号：US09662985B2
公开(公告)日：2017-05-30
申请号：US15059459
申请日：2016-03-03
申请人： ROHM CO., LTD.
发明人： Kenji Arai , Noriaki Hiraga
IPC分类号： H02M3/156 , H02M3/158 , H02M1/00 , H02M1/08 , B60L11/18
CPC分类号： B60L11/18 , H02M3/156 , H02M3/158 , H02M2001/0045
摘要： A switching transistor is configured such that its on resistance RON is switchable between at least two values RON1 and RON2. When the switching transistor is switched from off to on, a control circuit sets the on resistance of the switching transistor to the first value RON1 for a first period immediately after the switching of the switching transistor. Subsequently, for a second period until the switching transistor is turned off, the control circuit sets the on resistance of the switching transistor to the second value RON2 that is smaller than the first value RON1.

7. 发明授权

US09470735B2 Electric circuit evaluation method and electric circuit 有权
标题翻译：电路评估方法及电路
公开(公告)号：US09470735B2
公开(公告)日：2016-10-18
申请号：US14301509
申请日：2014-06-11
申请人： ROHM CO., LTD.
发明人： Noriaki Hiraga
IPC分类号： G01R31/02 , G01R31/28 , G01R31/00 , G01R31/26
CPC分类号： G01R31/002 , G01R31/2612 , G01R31/2616 , G01R31/28 , G01R31/2805 , G01R31/282 , G01R31/2839
摘要： A noise signal for a malfunction test is inputted to a ground terminal, and a frequency property of the magnitude of the power at which a designated electric circuit causes a malfunction is found. A detection reference ground of a detection part for detecting malfunctions of the designated electric circuit is connected at high impedance to a ground of the targeted circuit. Differential input parts are provided to the detection part, a to-be-detected part of the designated electric circuit is connected to one differential input part, and the ground of the targeted circuit is connected to the other differential input part. A ground of a noise source is isolated from a ground of a power source circuit for supplying a power source to the designated electric circuit. The ground of the noise source is galvanically isolated from the ground of the designated electric circuit.
摘要翻译：用于故障测试的噪声信号被输入到接地端子，并且发现指定的电路导致故障的功率的大小的频率特性。用于检测指定电路的故障的检测部分的检测基准接地以高阻抗连接到目标电路的接地。差分输入部分提供给检测部分，指定电路的被检测部分连接到一个差分输入部分，目标电路的接地连接到另一个差分输入部分。噪声源的接地与用于向指定电路供电的电源电路的接地隔离。噪声源的地面与指定电路的地面电隔离。

8. 发明申请

US20170270237A1 METHOD FOR COMPUTER SIMULATION AND METHOD FOR GENERATING A TRANSMISSION LINE MODEL 审中-公开
公开(公告)号：US20170270237A1
公开(公告)日：2017-09-21
申请号：US15454013
申请日：2017-03-09
申请人： Rohm Co., Ltd.
发明人： Noriaki Hiraga
IPC分类号： G06F17/50 , B60R16/02
CPC分类号： G06F17/5095 , B60R16/0207 , G06F17/5009 , G06F2217/16 , H01B7/0045 , H01P3/06 , H01P3/10
摘要： A method for generating a transmission line model includes classifying a transmission line which is a modeling target as one of at least two types comprising an end line and a middle line according to a laid state of the transmission line and modeling the end line and the middle line individually to generate an end-line model and a middle-line model. The end-line model and the middle-line model each include, as parameters representing their respective transmission characteristics, a characteristic impedance and a delay time. A method for computer simulation includes evaluating the immunity characteristics or emission characteristics of a tested device while sweeping a parameter which is a parameter, left variable, of a transmission line model that models the transmission line to which the tested device is connected.

9. 发明授权

US09400300B2 Electric circuit evaluation method 有权
标题翻译：电路评估方法
公开(公告)号：US09400300B2
公开(公告)日：2016-07-26
申请号：US14296554
申请日：2014-06-05
申请人： ROHM CO., LTD.
发明人： Noriaki Hiraga
IPC分类号： G01R31/02 , G01R23/02 , G01R31/00 , G01R19/00 , G01R31/28
CPC分类号： G01R31/002 , G01R19/0084 , G01R19/0092 , G01R23/02 , G01R31/021 , G01R31/024 , G01R31/2805 , G01R31/2812
摘要： The electric circuit evaluation method according to the present invention comprises: a step for finding a malfunction power frequency property, in which the magnitude of a critical noise signal at which a designated electric circuit causes a malfunction is represented by the power injected into the designated electric circuit; and a step for finding a malfunction current frequency property, in which the magnitude of the critical noise signal at which the designated electric circuit causes a malfunction is represented by a current (I_LSI) flowing to a predetermined portion of the designated electric circuit, and a malfunction voltage frequency property, in which the magnitude of the critical noise signal at which the designated electric circuit causes a malfunction is represented by a voltage (V_LSI) occurring between predetermined points of the designated electric circuit, both of which properties found from the malfunction power frequency property.
摘要翻译：根据本发明的电路评估方法包括：用于找到故障功率频率特性的步骤，其中指定电路导致故障的临界噪声信号的大小由注入指定电力的功率表示电路以及用于发现指定电路导致故障的临界噪声信号的大小由流向指定电路的预定部分的电流（I_LSI）表示的故障电流频率特性的步骤，以及指定电路导致故障的临界噪声信号的大小由指示电路的预定点之间出现的电压（V_LSI）表示的故障电压频率特性，从故障功率频率属性。

10. 发明授权

US09312762B2 Control circuit for step-up DC/DC converter 有权
标题翻译：升压型DC / DC转换器控制电路
公开(公告)号：US09312762B2
公开(公告)日：2016-04-12
申请号：US14230531
申请日：2014-03-31
申请人： ROHM CO., LTD.
发明人： Kenji Arai , Noriaki Hiraga
IPC分类号： H02M1/00 , H02M1/08 , H02M3/156 , H02M3/158
CPC分类号： B60L11/18 , H02M3/156 , H02M3/158 , H02M2001/0045
摘要： A switching transistor is configured such that its on resistance RON is switchable between at least two values RON1 and RON2. When the switching transistor is switched from off to on, a control circuit sets the on resistance of the switching transistor to the first value RON1 for a first period immediately after the switching of the switching transistor. Subsequently, for a second period until the switching transistor is turned off, the control circuit sets the on resistance of the switching transistor to the second value RON2 that is smaller than the first value RON1.
摘要翻译：开关晶体管被配置为使得其导通电阻RON可在至少两个值RON1和RON2之间切换。当开关晶体管从截止切换到导通时，控制电路在开关晶体管切换之后的第一周期将开关晶体管的导通电阻设置为第一值RON1。随后，在开关晶体管断开之前的第二时段，控制电路将开关晶体管的导通电阻设置为小于第一值RON1的第二值RON2。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式