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ISO7720 現行 穩健 EMC、雙通道、2/0、強化型數位隔離器 Pin-to-pin upgrade with higher isolation, stronger CMTI, wider supply range and better immunity

產品詳細資料

Rating Catalog Integrated isolated power No Isolation rating Basic Number of channels 2 Forward/reverse channels 2 forward / 0 reverse Default output High Data rate (max) (Mbps) 1 Surge isolation voltage (VIOSM) (VPK) 4000 Transient isolation voltage (VIOTM) (VPK) 4242 Withstand isolation voltage (VISO) (Vrms) 2500 CMTI (min) (V/µs) 25000 Operating temperature range (°C) -40 to 125 Supply voltage (max) (V) 5 Supply voltage (min) (V) 3.3 Propagation delay time (typ) (µs) 0.009 Current consumption per channel (DC) (typ) (mA) 1.1 Current consumption per channel (1 Mbps) (typ) (mA) 1.1 Creepage (min) (mm) 4 Clearance (min) (mm) 4
Rating Catalog Integrated isolated power No Isolation rating Basic Number of channels 2 Forward/reverse channels 2 forward / 0 reverse Default output High Data rate (max) (Mbps) 1 Surge isolation voltage (VIOSM) (VPK) 4000 Transient isolation voltage (VIOTM) (VPK) 4242 Withstand isolation voltage (VISO) (Vrms) 2500 CMTI (min) (V/µs) 25000 Operating temperature range (°C) -40 to 125 Supply voltage (max) (V) 5 Supply voltage (min) (V) 3.3 Propagation delay time (typ) (µs) 0.009 Current consumption per channel (DC) (typ) (mA) 1.1 Current consumption per channel (1 Mbps) (typ) (mA) 1.1 Creepage (min) (mm) 4 Clearance (min) (mm) 4
SOIC (D) 8 29.4 mm² 4.9 x 6
  • Highest Signaling Rate: 1 Mbps
  • Low Power Consumption, Typical ICC per Channel (3.3-V operation):
    • ISO7420: 1.1 mA, ISO7421: 1.5 mA
  • Low Propagation Delay – 9 ns Typical
  • Low Skew – 300 ps Typical
  • Wide TA Range: –40°C to 125°C (M-Grade)
  • 50-kV/μs Transient Immunity, Typical
  • Over 25-Year Isolation Integrity at Rated Voltage
  • Operates From 3.3-V and 5-V Supply and Logic Levels
  • 3.3-V and 5-V Level Translation
  • Narrow Body SOIC-8 Package
  • Safety and Regulatory Approvals:
    • 4242 VPK Isolation per DIN V VDE V 0884-10 and DIN EN 61010-1
    • 2500 VRMS Isolation for 1 minute per UL 1577
    • CSA Component Acceptance Notice 5A, IEC 60950-1 and IEC 61010-1 Standards
    • CQC Certification per GB4943.1-2011

All other trademarks are the property of their respective owners

  • Highest Signaling Rate: 1 Mbps
  • Low Power Consumption, Typical ICC per Channel (3.3-V operation):
    • ISO7420: 1.1 mA, ISO7421: 1.5 mA
  • Low Propagation Delay – 9 ns Typical
  • Low Skew – 300 ps Typical
  • Wide TA Range: –40°C to 125°C (M-Grade)
  • 50-kV/μs Transient Immunity, Typical
  • Over 25-Year Isolation Integrity at Rated Voltage
  • Operates From 3.3-V and 5-V Supply and Logic Levels
  • 3.3-V and 5-V Level Translation
  • Narrow Body SOIC-8 Package
  • Safety and Regulatory Approvals:
    • 4242 VPK Isolation per DIN V VDE V 0884-10 and DIN EN 61010-1
    • 2500 VRMS Isolation for 1 minute per UL 1577
    • CSA Component Acceptance Notice 5A, IEC 60950-1 and IEC 61010-1 Standards
    • CQC Certification per GB4943.1-2011

All other trademarks are the property of their respective owners

The ISO7420, ISO7420M and ISO7421 provide galvanic isolation up to 2500 VRMS for 1 minute per UL. These digital isolators have two isolated channels. Each isolation channel has a logic input and output buffer separated by a silicon dioxide (SiO2) insulation barrier. Used in conjunction with isolated power supplies, these devices prevent noise currents on a data bus or other circuit from entering the local ground and interfering with or damaging sensitive circuitry. The suffix M indicates wide temperature range (–40°C to 125°C).

These devices have TTL input thresholds and require two supply voltages, 3.3 or 5 V, or any combination. All inputs are 5-V tolerant when supplied from a 3.3-V supply.

Note: The ISO7420 and ISO7421 are specified for signaling rates up to 1 Mbps. Due to their fast response time, under most cases, these devices will also transmit data with much shorter pulse widths. Designers should add external filtering to remove spurious signals with input pulse duration <20 ns if desired.

The ISO7420, ISO7420M and ISO7421 provide galvanic isolation up to 2500 VRMS for 1 minute per UL. These digital isolators have two isolated channels. Each isolation channel has a logic input and output buffer separated by a silicon dioxide (SiO2) insulation barrier. Used in conjunction with isolated power supplies, these devices prevent noise currents on a data bus or other circuit from entering the local ground and interfering with or damaging sensitive circuitry. The suffix M indicates wide temperature range (–40°C to 125°C).

These devices have TTL input thresholds and require two supply voltages, 3.3 or 5 V, or any combination. All inputs are 5-V tolerant when supplied from a 3.3-V supply.

Note: The ISO7420 and ISO7421 are specified for signaling rates up to 1 Mbps. Due to their fast response time, under most cases, these devices will also transmit data with much shorter pulse widths. Designers should add external filtering to remove spurious signals with input pulse duration <20 ns if desired.

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類型 標題 日期
* Data sheet ISO742x Low-Power Dual-Channel Digital Isolators datasheet (Rev. I) PDF | HTML 2015年 7月 16日
Certificate VDE Certificate for Basic Isolation for DIN EN IEC 60747-17 (Rev. X) 2025年 1月 8日
White paper Improve Your System Performance by Replacing Optocouplers with Digital Isolators (Rev. C) PDF | HTML 2023年 9月 7日
Certificate CSA Certificate for ISO742xD 2023年 3月 15日
Certificate CQC Certificate for ISO154xD, ISO742xD, ISO71xxDBQ (Rev. A) 2023年 2月 7日
Certificate UL Certificate of Compliance File E181974 Vol 4 Sec 3 2022年 8月 8日
White paper Why are Digital Isolators Certified to Meet Electrical Equipment Standards? 2021年 11月 16日
White paper Distance Through Insulation: How Digital Isolators Meet Certification Requiremen PDF | HTML 2021年 6月 11日
EVM User's guide Universal Digital Isolator Evaluation Module PDF | HTML 2021年 3月 4日
EVM User's guide Dual-Channel Digital Isolator EVM (Rev. D) 2013年 7月 8日

設計與開發

如需其他條款或必要資源,請按一下下方的任何標題以檢視詳細頁面 (如有)。

開發板

DIGI-ISO-EVM — 通用數位隔離器評估模組

DIGI-ISO-EVM 是一款評估模組 (EVM),可評估任何 TI 單通道、雙通道、三通道、四通道或六通道數位隔離器裝置,並提供五種不同封裝 - 8 接腳窄體 SOIC (D)、8 接腳寬體 SOIC (DWV)、16 接腳寬體 SOIC (DWW)、16 接腳超寬體 SOIC (DWW) 和 16 接腳 (DBQ) 封裝。EVM 具備足夠 Berg 接腳選項,可用於評估具最少外部零組件的裝置。

使用指南: PDF | HTML
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模擬型號

ISO7420 IBIS Model (Rev. A)

SLOM199A.ZIP (28 KB) - IBIS Model
參考設計

TIDM-METROLOGY-HOST — 具有隔離能量量測的單相電錶

電錶開發人員通常偏好將電能測量功能與主機處理器功能分開,例如 ANSI/IEC 資料表、DLMS/COSEM、費率管理和通訊。此設計展示了使用獨立計量處理器和主機處理器來保持這些電錶功能分離的方法。設計隨附的韌體可管理所有必要功能,以及處理器間的同步化。此設計也示範了如何隔離兩個處理器之間的通訊,以達到必要的安全要求。最後,此設計展示了在 MSP430 MCU 上使用 USB 介面進行電錶校準的方法。透過重複使用此參考設計,工程師將能夠更快速地開發具有隔離計量功能的智慧電錶。
Design guide: PDF
電路圖: PDF
參考設計

TIDA-00601 — 具有隔離分流感測器的多相能源量測參考設計

TIDA-00601 參考設計實作了具有隔離式分流感測器的 0.5% 級三相電能量測系統。  隔離的方式是透過使用隔離式 ΔΣ 調變器,將輸出電路與輸入電路電容隔離。  電能量測 SoC 從隔離式調變器中取得不同的位元串流,並使用其板載數位濾波器產生 ADC 取樣讀數。  電能量測 SoC 也可用於感測電壓、計算量測參數值、驅動電路板的 LCD,以及透過電路板的隔離式 RS-232 電路與 PC GUI 通訊。

此參考設計使用 ISO7420ISO7421。此參考設計也可搭配 ISO7320CISO7321C 使用。

此參考設計使用 AMC1304M05。此參考設計也可搭配 (...)

使用指南: PDF
電路圖: PDF
參考設計

TIDM-SOLARUINV — 具有 MPPT 的併網型太陽能微逆變器

此設計是一種數位控制的併網型太陽能微逆變器,具備最大功率點追蹤 (MPPT) 功能的。太陽能微逆變器是太陽能產業的新興領域。太陽能微逆變器型安裝是將更小型或「微型」逆變器個別連結至各個太陽能面板,而不是將安裝的每個太陽能面板連結至中央逆變器。這種配置有許多優點,包括消除部分遮蔭情況、提高系統效率、增強可靠性以及模組化程度。在此設計中,C2000™ Piccolo™ TMS320F28035 微控制器 (MCU) 是完整逆變器的數位控制器,其中包括功率級控制、MPPT 和併網同步。功率轉換級包括 1) 含二次電壓倍頻的主動箝位返馳 DC/DC 轉換器,以及 2) 併網型 DC/AC (...)
使用指南: PDF
電路圖: PDF
參考設計

PMP4435 — 具有 GaN FET 的 48V 輸入、300W 1/8brick 數位模組參考設計

The PMP4435 is a DC-DC isolated digital module with GaN mosfet reference design targeted for industrial and telecom applications. The DC input range is 36V-60V, with 12V typical and the output is 12V/5A. An digital controller UCD3138A is used in the design. The efficiency is up to 95.8% with good (...)
Test report: PDF
電路圖: PDF
參考設計

TIDA-00231 — 具輸出通道保護的 PLC 類比輸出模組專用適應型電源供應器

TIDA-00231 is a reference design for an industrial Programmable Logic Controller (PLC) analog output module. The design provides a unique power saving solution for a digital-to-analog converter (DAC)-based analog current output module with an adaptive power supply. This adaptive power supply (...)
Design guide: PDF
電路圖: PDF
參考設計

PMP4320A — 具有數位控制且適用於電信應用的 600W 半磚式 DC/DC 轉換器參考設計

The PMP4320A reference design is a single output DC-DC converter with standard half-brick dimensions and full digital control configuration based on the UCD3138.  It is capable of delivering 50A output current with an output voltage of 12V.  The converter provides high efficiency and good (...)
Test report: PDF
電路圖: PDF
參考設計

PMP6712 — 適用 PoE 供電設備 (PSE) 的雙通道全橋式轉換器參考設計 (54 V @ 30 A)

This is a phase-shifted full-bridge converter reference design capable of delivering 1600 W of isolated output power and achieving efficiency of greater than 96%. This design uses the UCC28950 controller in a dual-phase primary/secondary configuration. An LM5017 constant on-time synchronous buck (...)
Test report: PDF
電路圖: PDF
封裝 針腳 CAD 符號、佔位空間與 3D 模型
SOIC (D) 8 Ultra Librarian

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