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ISOW1044

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Low emissions, 5-kVrms isolated CAN FD transceiver with integrated DC/DC power

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Data sheet

ISOW1044

ACTIVE
Data sheet Order now

Product details

Rating Catalog Isolation rating Basic Number of channels 1 Data rate (max) (Mbps) 5 Working isolation voltage (VIOWM) (Vrms) 1000 Surge isolation voltage (VIOSM) (VPK) 6250 Transient isolation voltage (VIOTM) (VPK) 7071 Withstand isolation voltage (VISO) (Vrms) 5000 CMTI (min) (kV/µs) 85 Operating temperature range (°C) -40 to 125 Type CAN
Rating Catalog Isolation rating Basic Number of channels 1 Data rate (max) (Mbps) 5 Working isolation voltage (VIOWM) (Vrms) 1000 Surge isolation voltage (VIOSM) (VPK) 6250 Transient isolation voltage (VIOTM) (VPK) 7071 Withstand isolation voltage (VISO) (Vrms) 5000 CMTI (min) (kV/µs) 85 Operating temperature range (°C) -40 to 125 Type CAN
SOIC (DFM) 20 132.149 mm² 12.83 x 10.3
  • Meets the requirements of ISO 11898-2:2016 physical layer standards

    • Support of Classical CAN: 1 Mbps

    • Optimized for CAN FD: 2 and 5 Mbps
  • Integrated DC-DC converter with low-emissions, low-noise
    • Meets CISPR 32 and EN 55032 Class B with greater than 6 dB margin on a two-layer PCB
    • Low frequency power converter at 25 MHz enabling low noise performance
  • Additional 10 Mbps GPIO channel
  • High efficiency output power
    • Typical efficiency: 47%
    • Isolated output voltage accuracy: ± 5%
    • Additional output current: 20 mA
  • Independent power supply for CAN & DC-DC
    • Logic supply (V IO): 1.71 V to 5.5 V
    • Power converter supply ( V DD): 4.5 V to 5.5 V
  • Fault-Protected CAN FD Transceiver
    • DC Bus fault protection voltage: ± 58V
    • Receiver common mode input voltage: ±12 V
    • Remote wakeup via BUS wake-up pattern
  • Typical loop delay: 167 ns
  • Reinforced and Basic isolation options
  • High CMTI: 100-kV/µs (typical)
  • High ESD bus protection w.r.t GND2
    • HBM ESD: ±12 kV
    • IEC 61000-4-2 contact discharge: ±8 kV
  • Operating temperature range: -40°C to 125°C
  • Current limit and thermal shutdown
  • 20-pin wide SOIC package
  • Safety-Related Certifications planned:
    • VDE Reinforced and Basic insulation per DIN VDE V 0884-11:2017-01
    • UL 1577 component recognition program
    • IEC 62368-1, IEC 61010-1, IEC 60601-1 and GB 4943.1-2011 certifications
  • Meets the requirements of ISO 11898-2:2016 physical layer standards

    • Support of Classical CAN: 1 Mbps

    • Optimized for CAN FD: 2 and 5 Mbps
  • Integrated DC-DC converter with low-emissions, low-noise
    • Meets CISPR 32 and EN 55032 Class B with greater than 6 dB margin on a two-layer PCB
    • Low frequency power converter at 25 MHz enabling low noise performance
  • Additional 10 Mbps GPIO channel
  • High efficiency output power
    • Typical efficiency: 47%
    • Isolated output voltage accuracy: ± 5%
    • Additional output current: 20 mA
  • Independent power supply for CAN & DC-DC
    • Logic supply (V IO): 1.71 V to 5.5 V
    • Power converter supply ( V DD): 4.5 V to 5.5 V
  • Fault-Protected CAN FD Transceiver
    • DC Bus fault protection voltage: ± 58V
    • Receiver common mode input voltage: ±12 V
    • Remote wakeup via BUS wake-up pattern
  • Typical loop delay: 167 ns
  • Reinforced and Basic isolation options
  • High CMTI: 100-kV/µs (typical)
  • High ESD bus protection w.r.t GND2
    • HBM ESD: ±12 kV
    • IEC 61000-4-2 contact discharge: ±8 kV
  • Operating temperature range: -40°C to 125°C
  • Current limit and thermal shutdown
  • 20-pin wide SOIC package
  • Safety-Related Certifications planned:
    • VDE Reinforced and Basic insulation per DIN VDE V 0884-11:2017-01
    • UL 1577 component recognition program
    • IEC 62368-1, IEC 61010-1, IEC 60601-1 and GB 4943.1-2011 certifications

The ISOW1044 device is a galvanically-isolated controller area network (CAN) transceiver with a built-in isolated DC-DC converter that eliminates the need for a separate isolated power supply in space-constrained isolated designs. The low-emissions, isolated DC-DC meets CISPR 32 radiated emissions Class B standard with just two ferrite beads on a simple two-layer PCB. Additional 20 mA output current can be used to power other circuits on the board. An integrated 10 Mbps GPIO channel is available and can help remove an additional digital isolator or optocoupler for diagnotstics, LED indication or supply monitoring.

The ISOW1044 device is a galvanically-isolated controller area network (CAN) transceiver with a built-in isolated DC-DC converter that eliminates the need for a separate isolated power supply in space-constrained isolated designs. The low-emissions, isolated DC-DC meets CISPR 32 radiated emissions Class B standard with just two ferrite beads on a simple two-layer PCB. Additional 20 mA output current can be used to power other circuits on the board. An integrated 10 Mbps GPIO channel is available and can help remove an additional digital isolator or optocoupler for diagnotstics, LED indication or supply monitoring.
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Technical documentation

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* Data sheet ISOW1044 Isolated CAN FD Transceiver with Integrated Low-Emissions, Low-Noise, High-Efficiency DC-DC Converter datasheet (Rev. A) PDF | HTML 08 Nov 2021
Certificate VDE Certificate for Basic Isolation for DIN EN IEC 60747-17 (Rev. Z) 29 May 2026
White paper 以可靠且經濟實惠的隔離技術解決高 電壓設計挑戰 (Rev. D) PDF | HTML 26 May 2026
White paper 신뢰할 수 있는 합리적 가격대의 절 연 기술 개발과 관련한 고전압 설계 문제의 해결 (Rev. D) PDF | HTML 26 May 2026
Application note Top Design Questions About Isolated CAN Bus Design (Rev. C) PDF | HTML 19 May 2026
White paper Addressing High-Volt Design Challenges w/ Reliable and Affordable Isolation Tech (Rev. D) PDF | HTML 15 May 2026
Certificate TUV Certificate for Isolation Devices (Rev. M) 07 May 2026
Certificate UL Certificate of Compliance File E181974 Vol 4 Sec 6 (Rev. S) 07 May 2026
Certificate VDE Certificate for Reinforced Isolation for DIN EN IEC 60747-17 (Rev. AA) 10 Mar 2026
Application brief How to Isolate Signal and Power in Isolated CAN Systems (Rev. D) PDF | HTML 07 Nov 2025
Certificate CQC Certificate for ISOxxDFM (Rev. B) 19 Aug 2025
Certificate CSA Certificate for ISOW1044xDFM (Rev. A) 13 Feb 2023
Product overview Isolating a CAN Bus (Rev. A) PDF | HTML 13 Jan 2023
Application brief Isolate Your CAN Systems Without Compromising on Performance or Space (Rev. F) PDF | HTML 04 Aug 2022
White paper Why are Digital Isolators Certified to Meet Electrical Equipment Standards? 16 Nov 2021
White paper Distance Through Insulation: How Digital Isolators Meet Certification Requiremen PDF | HTML 11 Jun 2021
Technical article 4 common questions when isolating signal and power PDF | HTML 01 Jun 2021
Application brief How to Meet CISPR 32 Radiated Emissions Limits With ISOW7741 PDF | HTML 28 May 2021
Application brief Benefits of an Isolated CAN Transceiver with Integrated Power PDF | HTML 25 May 2021
User guide ISOW1044 Reinforced 5-kVrms Isoated CAN Transceiver with Integrated Low-Emission PDF | HTML 23 Mar 2021

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

ISOW1044DFMEVM — ISOW1044 isolated CAN transceiver with integrated DC-DC converter evaluation module

ISOW1044DFMEVM is an evaluation module (EVM) used to evaluate the high-performance, 5000-VRMS reinforced isolated CAN transceiver with integrated high-Efficiency, low-emissions DC-DC converter ISOW1044 in 20-pin WB SOIC package (package code-DFM). The EVM features enough test points and jumper (...)

User guide: PDF | HTML
Not available on TI.com
Simulation model

ISOW1044 IBIS Model

SLLM489.ZIP (90 KB) - IBIS Model
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Design guide: PDF
Schematic: PDF
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TIDA-010985 — Resistive-bridge insulation monitoring device for 800V DC systems with large Y cap reference design

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Design guide: PDF
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SOIC (DFM) 20 Ultra Librarian
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