ISOW7841FDWE

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1. Describe

The ISOW7841FDWE is a family of high-performance, quad-channel reinforced digital isolators with integrated high-efficiency power converters. Integrated DCDC converter provides up to 650 mW of isolation Energy efficient and configurable Various input and output voltage configurations are available. Therefore, these devices eliminate the isolation of space-constrained stand-alone isolated power supply designs. The ISOW7841FDWE family of devices offers high electromagnetic immunity and low emissions while isolating CMOS or LVCMOS digital I/O. The signal isolation channel has a logic input and output buffer with a dual-capacitor silicon dioxide (SiO2) insulating barrier, while the power isolation uses an on-chip transformer separated by a thin-film polymer as the insulating material. Various configurations of forward and reverse channels are available. The default output is high for ISOW784x devices without the F suffix and low for devices with the F suffix if the input signal is lost. These devices help prevent noise currents on the data bus or other circuits from entering the local ground and interfering with or damaging sensitive circuits. Through innovative chip design and layout techniques, the device's electromagnetic compatibility has been significantly enhanced to simplify system-level ESD, EFT, surge and emissions compliance. The high efficiency of the power converter allows operation at higher ambient temperatures. The device is available in a 16-pin SOIC wide-body DWE package.

2. Feature

    1. 100 Mbps data rate

    2. Robust isolation barrier:

        – Expected service life >100 years at 1 kVRMS operating voltage

        – Isolation class up to 5000 VRMS

        – Up to 10 kVPK surge capability

        – ±100 kV/µs minimum CMTI

    3. Integrated high-efficiency DC-DC converter with on-chip transformer

    4. 3V to 5.5V wide input supply range

    5. Regulated 5V or 3.3V output

    6. Up to 0.65W output power

    7. 5 V to 5 V; 5 V to 3.3 V: available load current ≥ 130 mA

    8. 3.3 V to 3.3 V: Available load current ≥ 75 mA

    9. 3.3 V to 5 V: Available load current ≥ 40 mA

  10. Soft-start to limit inrush current

  11. Overload and short circuit protection

  12. Thermal shutdown

  13. Default output: high and low options

  14. Low propagation delay: 13 ns typical (5V supply)

  15. Strong Electromagnetic Compatibility (EMC)

        – System level ESD, EFT and surge immunity

        – ±8 kV IEC 61000-4-2 contact discharge protection across isolation barrier

        – low emissions

  16. 16-pin wide SOIC package

  17. Extended temperature range: –40°C to +125°C

  18. Safety related certifications:

        – 7071-VPK Reinforced isolation according to DIN V VDE V 0884-11:2017-01

        – 5000-VRMS isolation for 1 minute per UL 1577

        – CSA certified to IEC 60950-1, IEC 62368-1 and IEC 60601-1 end equipment standards

        – CQC certification conforms to GB4943.1-2011

        – TUV certification according to EN 60950-1 and EN 61010-1

3. Application

    1. Automation industry

    2. motor control

    3. Grid infrastructure

    4. medical equipment

    5. Test and Measurement

4. Pin configuration

5. Pin Description

6. Application Information

This device is a high-performance quad-channel digital isolator with an integrated DC-DC converter. Isolators are usually digital and require two isolated power supplies to power both sides of the device. because The DC-DC converter is integrated inside the device to generate an isolated power supply inside the device, which can be used Save board space by powering the isolated side of the device and peripherals on the isolated side. The device uses single-ended CMOS logic switching technology. When designing with digital isolators, keep in mind that due to the single-ended design construction, digital isolators do not conform to any particular interface standard, but For isolation of single-ended CMOS or TTL digital signal lines only. isolators are usually placed in Data controllers and data converters or line transceivers, regardless of interface type or standard. The device is suitable for applications where board space is limited and higher levels of integration are required. These devices are also suitable for extra-high voltage applications, where power transformers are bulky and expensive to meet the required isolation specifications.