公开(公告)号：US10298153B2

公开(公告)日：2019-05-21

申请号：US15656864

申请日：2017-07-21

申请人： Renesas Electronics Corporation

发明人： Naohiro Yoshimura ,  Akihiro Nakahara ,  Makoto Tanaka

IPC分类号： H02P1/02 ,  H02P29/20 ,  G01R31/02

摘要： Provided are an input buffer, a semiconductor device and an engine control unit making it possible to execute fault diagnosis in real time. The input buffer includes a first comparator which compares a voltage of an input signal with a first reference voltage, a hysteresis circuit which generates a first high voltage side or low voltage side reference voltage on the basis of a comparison result from the first comparator, a second comparator which compares the voltage of the input signal with a second reference voltage, and a hysteresis circuit which outputs a second high voltage side reference voltage which is higher than the first high voltage side reference voltage or a second low voltage side reference voltage which is lower than the first low voltage side reference voltage.

公开(公告)号：US11799468B2

公开(公告)日：2023-10-24

申请号：US17942259

申请日：2022-09-12

申请人： Renesas Electronics Corporation

发明人： Naohiro Yoshimura ,  Makoto Tanaka

IPC分类号： H02H9/04 ,  H03K17/082 ,  H03K17/687 ,  H02H9/02 ,  H02M3/158

CPC分类号： H03K17/0822 ,  H02H9/02 ,  H02H9/041 ,  H02M3/158 ,  H03K17/687 ,  H03K2217/0063

摘要： Detection transistor MNd flows a detection current IdN to a current path CP1n when an output voltage Vo generated in a load terminal PN1 is than a ground voltage GND. A current mirror circuit CMp1 transfers the detection current IdN flowing in the current path CP1n to a current path CP2a. Detecting resistor element Rd1 converts a mirror current I2a flowing in the current path CP2a to a detection voltage Vd1. A control transistor MNc1 is turned on when the converted detection voltage Vd1 is higher than a predetermined value. Then, the output transistor QO is controlled to be off while the control transistor MNc1 is on.

公开(公告)号：US11128131B2

公开(公告)日：2021-09-21

申请号：US16554207

申请日：2019-08-28

申请人： RENESAS ELECTRONICS CORPORATION

发明人： Naohiro Yoshimura ,  Osamu Soma

IPC分类号： H01L23/00 ,  H02H11/00 ,  H02H1/00 ,  H02H3/04

摘要： The power control device reliably disconnects the current path of the failed output transistor. In particular, the power control device includes output transistors, an output terminal, bonding wires connecting the output transistors to the output terminal, output transistor driving circuits controlling the output of the output transistors, and a failure detection circuit detecting the failure of the output transistors. When the failure detection circuit detects the failure of the output transistors and outputs the failure detection signals, the output transistor drive circuits control the outputs of the output transistors so that a larger current flows through the bonding wires than when the failure is not detected.