JP6193331B2 - 共通モード過渡現象の保護機能付き信号アイソレータシステム - Google Patents
共通モード過渡現象の保護機能付き信号アイソレータシステム Download PDFInfo
- Publication number
- JP6193331B2 JP6193331B2 JP2015215569A JP2015215569A JP6193331B2 JP 6193331 B2 JP6193331 B2 JP 6193331B2 JP 2015215569 A JP2015215569 A JP 2015215569A JP 2015215569 A JP2015215569 A JP 2015215569A JP 6193331 B2 JP6193331 B2 JP 6193331B2
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- Prior art keywords
- isolator
- filter
- pair
- common mode
- voltage
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0264—Arrangements for coupling to transmission lines
- H04L25/0272—Arrangements for coupling to multiple lines, e.g. for differential transmission
- H04L25/0276—Arrangements for coupling common mode signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0264—Arrangements for coupling to transmission lines
- H04L25/0266—Arrangements for providing Galvanic isolation, e.g. by means of magnetic or capacitive coupling
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Networks Using Active Elements (AREA)
- Dc Digital Transmission (AREA)
- Logic Circuits (AREA)
- Filters And Equalizers (AREA)
Description
120 アイソレータ
130 ACフィルタ
140 受信機
200 フィルタ
Claims (17)
- 差分アイソレータ信号を生成するアイソレータと、
前記アイソレータを介して受信された信号を表すデジタルデータを生成するための受信機と、
前記アイソレータと前記受信機との間に連結されたRCフィルタと、
を備え、
前記フィルタが、
第1の対の端子間に延在し、第1の共通モード基準電圧に接続するために暫定ノードを有する入力インピーダンスステージと、
第2の対の端子間に延在し、第2の共通モード基準電圧に接続するために暫定ノードを有する第2のインピーダンスステージと、
一対のコンデンサであって、各々が前記入力インピーダンスステージのそれぞれの端子と前記第2のインピーダンスステージのそれぞれの端子との間に接続される、一対のコンデンサと、
を備える、アイソレータシステム。 - 前記フィルタが、
電源のラインと該電源のグランドとの間に延在する分圧器と、
前記分圧器の中間ノードと前記電源のラインおよび該電源のグランドのうちの一方との間に延在する別のコンデンサであって、前記中間ノードが、前記第2の共通モード基準電圧として前記第2のインピーダンスステージに接続される、別のコンデンサと、
をさらに備える、請求項1に記載のシステム。 - 前記フィルタが、
前記フィルタの第1の入力端子を前記受信機の第1の入力端子に連結する高域経路と、
前記フィルタの第2の入力端子を前記受信機の第2の入力端子に連結する低域経路と、
を備える、請求項1に記載のシステム。 - 前記アイソレータが変圧器を備える、請求項1に記載のシステム。
- 前記アイソレータが一対のコンデンサを備える、請求項1に記載のシステム。
- 前記アイソレータが磁気抵抗器を備える、請求項1に記載のシステム。
- 前記システムが前記アイソレータに連結された送信機を更に備え、
前記送信機がオンオフキー変調器である、請求項1に記載のシステム。 - 前記システムが前記アイソレータに連結された送信機を更に備え、
前記送信機がパルス数変調器である、請求項1に記載のシステム。 - 前記システムが前記アイソレータに連結された送信機を更に備え、
前記送信機がパルス極性変調器である、請求項1に記載のシステム。 - 前記アイソレータ、フィルタ、および受信機が、共通の基板上に提供される、請求項1に記載のシステム。
- 前記アイソレータが第1の基板上に提供され、前記フィルタおよび前記受信機が第2の基板上に提供される、請求項1に記載のシステム。
- アイソレータシステム用のフィルタであって、
第1の対の端子間に延在し、第1の共通モード基準電圧に接続するために暫定ノードを有する入力インピーダンスステージと、
第2の対の端子間に延在し、第2の共通モード基準電圧に接続するために暫定ノードを有する第2のインピーダンスステージと、
一対のコンデンサであって、各々が前記入力インピーダンスステージのそれぞれの端子と前記第2のインピーダンスステージのそれぞれの端子との間に接続される、一対のコンデンサと、
を備える、フィルタ。 - 前記第2の対の端子が、前記フィルタの出力端子である、請求項12に記載のフィルタ。
- 電源のラインと該電源のグランドとの間に延在する分圧器と、
前記分圧器の中間ノードと前記電源のラインおよび該電源のグランドのうちの一方との間に延在する第3のコンデンサであって、前記中間ノードが、前記第2の共通モード基準電圧として前記第2のインピーダンスステージに接続される、第3のコンデンサと、
をさらに備える、請求項12に記載のフィルタ。 - 前記第3のコンデンサの容量が、前記一対のコンデンサの各々の容量の少なくとも2倍である、請求項14に記載のフィルタ。
- 前記分圧器が、一対の直列接続された抵抗器を備える、請求項14に記載のフィルタ。
- 前記入力インピーダンスステージおよび前記第2のインピーダンスステージが各々、それぞれの対の直列接続された抵抗器を備える、請求項12に記載のフィルタ。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/531,141 US9998301B2 (en) | 2014-11-03 | 2014-11-03 | Signal isolator system with protection for common mode transients |
US14/531,141 | 2014-11-03 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2016092838A JP2016092838A (ja) | 2016-05-23 |
JP6193331B2 true JP6193331B2 (ja) | 2017-09-06 |
Family
ID=55753892
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2015215569A Active JP6193331B2 (ja) | 2014-11-03 | 2015-11-02 | 共通モード過渡現象の保護機能付き信号アイソレータシステム |
Country Status (4)
Country | Link |
---|---|
US (1) | US9998301B2 (ja) |
JP (1) | JP6193331B2 (ja) |
CN (1) | CN105577163B (ja) |
DE (1) | DE102015118514B4 (ja) |
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US10270630B2 (en) | 2014-09-15 | 2019-04-23 | Analog Devices, Inc. | Demodulation of on-off-key modulated signals in signal isolator systems |
US10536309B2 (en) * | 2014-09-15 | 2020-01-14 | Analog Devices, Inc. | Demodulation of on-off-key modulated signals in signal isolator systems |
US9998301B2 (en) * | 2014-11-03 | 2018-06-12 | Analog Devices, Inc. | Signal isolator system with protection for common mode transients |
US10411663B2 (en) * | 2016-11-15 | 2019-09-10 | Solantro Semiconductor Corp. | Galvanically isolated amplifiers and related methods |
EP3821574B1 (en) * | 2018-07-10 | 2023-06-14 | Vddtech | Digital isolator |
CN108563279A (zh) * | 2018-07-11 | 2018-09-21 | 重庆线易电子科技有限责任公司 | 稳压滤波电路及信号检测电路 |
CN108776265A (zh) * | 2018-07-11 | 2018-11-09 | 重庆线易电子科技有限责任公司 | 动态阻抗电路及信号检测电路 |
US10797608B2 (en) * | 2019-02-14 | 2020-10-06 | Dialog Semiconductor Inc. | Flyback converter with edge-based isolated communication |
US10659173B1 (en) * | 2019-07-18 | 2020-05-19 | Amazing Microelectronic Corp. | Digital isolator module for high level common mode transient immunity |
CN110763922B (zh) * | 2019-11-01 | 2021-12-31 | 龙迅半导体(合肥)股份有限公司 | 差分参考电压发生电路、峰值信号检测电路和电子设备 |
CN111245426B (zh) * | 2020-01-14 | 2023-04-28 | 华源智信半导体(深圳)有限公司 | 隔离电容通信电路及其失效保护方法 |
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2014
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US20160126724A1 (en) | 2016-05-05 |
JP2016092838A (ja) | 2016-05-23 |
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CN105577163B (zh) | 2018-12-14 |
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