| 发明名称 | Isolator, semiconductor device, and method for controlling isolator | ||
| 摘要 | An isolator includes: a transmission circuit that generates an alternating current transmission signal in which a first potential is set to be a reference potential; a first insulating element to which the alternating current transmission signal is supplied; a second insulating element that generates an alternating current reception signal in which a second potential is set to be a reference potential by being alternating current-coupled to the first insulating element through an insulating film; a reception circuit that reproduces reception data based on the alternating current reception signal; an impedance control unit that controls an impedance of the first or the second insulating element to be higher than an impedance before the control; and a leakage current detection unit that detects a leakage current flowing between the first and the second insulating elements through the first or the second insulating element in which the impedance has been controlled. | ||
| 申请公布号 | US9395402(B2) | 申请公布日期 | 2016.07.19 |
| 申请号 | US201514745837 | 申请日期 | 2015.06.22 |
| 申请人 | Renesas Electronics Corporation | 发明人 | Nagase Hirokazu |
| 分类号 | G01R31/00;G01R31/12;G01R31/02;H03K17/687 | 主分类号 | G01R31/00 |
| 代理机构 | Sughrue Mion, PLLC | 代理人 | Sughrue Mion, PLLC |
| 主权项 | 1. An isolator comprising: a transmission circuit that generates an alternating current transmission signal in which a first potential is set to be a reference potential based on input transmission data; a first insulating element to which the alternating current transmission signal is supplied; a second insulating element that generates an alternating current reception signal in which a second potential different from the first potential is set to be a reference potential according to the alternating current transmission signal by being alternating current-coupled to the first insulating element through an insulating film; a reception circuit that reproduces reception data based on the alternating current reception signal; an impedance control unit that controls an impedance of the first or the second insulating element to be higher than an impedance before the control; and a leakage current detection unit that detects a leakage current flowing between the first and the second insulating elements through the first or the second insulating element in which the impedance has been controlled. | ||
| 地址 | Kanagawa JP | ||