公开(公告)号：US10171070B2

公开(公告)日：2019-01-01

申请号：US15579790

申请日：2016-05-12

申请人： Mitsubishi Electric Corporation

发明人： Kenichi Morokuma ,  Jun Tomisawa ,  Tetsuya Uchida ,  Shoichi Orita

IPC分类号： H03K17/081 ,  H02M1/08 ,  H03K17/691 ,  H03K17/0812

摘要： A first circuit outputs transmission signals that change between “H” and “L” in a period of an oscillation signal in addition to a transition time of an input signal when it changes to “H” or “L”. Control protection elements invalidate induced voltage signals obtained from transformers for first and second mask periods in response to transmission signals. Buffer circuits and Schmitt circuits generate a first signal and a second signal, each indicating “H” for a relatively long period, on the basis of “H” of the induced voltage signals. A control circuit invalidates the first signal and the second signal when both the first signal and the second signal indicate “H”.

公开(公告)号：US09502954B2

公开(公告)日：2016-11-22

申请号：US14769924

申请日：2013-10-28

申请人： Mitsubishi Electric Corporation

发明人： Kenichi Morokuma ,  Jun Tomisawa ,  Tetsuya Uchida ,  Kazuyasu Nishikawa

IPC分类号： H04B3/00 ,  H02M1/08

CPC分类号： H02M1/08

摘要： A signal transmission circuit includes, in each of a first circuit connected to a first coil of an insulating transformer and a second circuit connected to a second coil of the insulating transformer, a transmitting circuit, a receiving circuit, a coil-side switching circuit, an input/output-side switching circuit, an abnormality detection circuit, a delay circuit, and a direction control section. In the signal transmission circuit, the direction control section controls the switching circuit to switch a signal direction between input and output, and the switching circuit switches between transmission and reception. The delay circuit delays a received signal and returns the resultant signal to the transmitting side, and the abnormality detection circuit detects abnormality to perform self-diagnosis.

摘要翻译： 信号传输电路包括：在连接到绝缘变压器的第一线圈的第一电路和连接到绝缘变压器的第二线圈的第二电路中的每一个中，发送电路，接收电路，线圈侧开关电路， 输入输出侧切换电路，异常检测电路，延迟电路和方向控制部。 在信号传输电路中，方向控制部分控制切换电路切换输入和输出之间的信号方向，切换电路在发送和接收之间切换。 延迟电路延迟接收到的信号并将结果信号返回到发送侧，并且异常检测电路检测异常以执行自诊断。

公开(公告)号：US10014856B2

公开(公告)日：2018-07-03

申请号：US15543080

申请日：2016-01-12

申请人： MITSUBISHI ELECTRIC CORPORATION

发明人： Tetsuya Uchida ,  Kenichi Morokuma

IPC分类号： H02J1/00 ,  H02J3/00 ,  H03K17/691 ,  H03K3/3565 ,  H03K5/24 ,  H03K3/012 ,  H01L27/02 ,  H01L23/538 ,  H03K3/356

CPC分类号： H03K17/691 ,  H01L23/5386 ,  H01L27/0255 ,  H01L2224/48091 ,  H01L2224/48137 ,  H03K3/012 ,  H03K3/356104 ,  H03K3/3565 ,  H03K5/08 ,  H03K5/2481 ,  H04L25/0266 ,  H04L25/493 ,  H01L2924/00014

摘要： This invention, is concerning a signal voltage device, in which transformers 22a, 22b and a reception circuit 24 are formed on the same chip, and accordingly, no ESD protective element connected to a transformer connection terminal of the reception circuit 24 is required, and negative pulses generated in reception-side inductors 11 can be used in signal transmission. Signal transmission using both positive pulses and negative pulses is made possible as a result, and a stable signal transmission operation can be carried out even in a case where delay time varies in a signal detection circuit. Further, a reception circuit of low power consumption can be configured by using a single-ended Schmitt trigger circuit 14 in the signal detection circuit.