Rohm Co., Ltd.

Denso Corporation

Masahiko Arimura

Taketoshi Tanaka

Kosei Osada

Daiki Yanagishima

Junichi Hasegawa

Kazuma Takahashi

Yusuke Michisita

A signal transmission device for transmitting a pulse signal to drive a switching element includes: a first external terminal configured to receive a first input pulse signal for ordinary driving; a second external terminal configured to receive a second input pulse signal for forcible driving; and a first logic configured to generate a driving pulse signal according to the first and second input pulse signals. The first logic gives priority to the second input pulse signal over the first input pulse signal.

Signal transmission device, electronic device, and vehicle

An electronic component includes an insulating layer, a low voltage conductor pattern formed inside the insulating layer, a high voltage conductor pattern formed inside the insulating layer such as to face the low voltage conductor pattern in an up/down direction, and a withstand voltage enhancement structure of conductive property formed inside the insulating layer and along the high voltage conductor pattern such as to protrude further outside than the low voltage conductor pattern in plan view.

Electronic component and electronic component module

In a transmission circuit, a first pulse signal with a first frequency and a second pulse signal with a second frequency are output according to a rising edge and a falling edge of a first input signal, respectively. When a second input signal indicates an active level, the second pulse signal is output according to the falling edge of the first input signal and the second frequency is changed to a third frequency. In a reception circuit, a first level of a first output signal is changed to a second level according to a first induced signal via a transformer, the second level of the first output signal is changed to the first level according to a second induced signal via the transformer, and a second output signal is changed to an active level when a frequency of the second induced signal has changed to the third frequency.

Signal transmission apparatus

A pulse generation circuit has: an edge detector detecting a pulse edge in an input signal to generate edge detection signals; a clock generator generating a clock signal according to the edge detection signals; a frequency divider dividing the frequency of the clock signal to generate a frequency-divided clock signal; an input pad for receiving a test mode switch signal from a tester; and an output pad for outputting the frequency-divided clock signal to the tester. The edge detector can generate the edge detection signals by detecting a pulse edge not in the input signal but in the clock signal or in the inverted clock signal obtained by inverting the logic level of the clock signal when the test mode switch signal is being fed in. The signal delay time in the edge detector is adjustable according to the period of the frequency-divided clock signal as measured by the tester.

Growing community of inventors

Kyoto, Japan

Masahiko Arimura