New Digital Isolator Improves Signal Isolation and Network Performance in High Temperature Automotive Designs


ByDinesh Kumar 0

ISO7741E-Q1 Grade-0 Digital Isolator IC

Texas Instruments has introduced a Grade 0 digital isolator IC called ISO7741E-Q1 that can operate in an ambient temperature specified by the Automotive Electronics Council. The Isolator features an industry-leading 1.5kVRMS working voltage and supports temperature up to the Grade 0 maximum of 150°C. With an isolation voltage of 5kVRMS, The ISO7741E-Q1 can deliver reliable operation in hybrid electric vehicle (HEV) and electric vehicle (EV) powertrain and HVAC systems that require signal transmission across an isolation barrier, such as starter generators, cooling fans, and traction inverters

The New isolator allows the engineers to protect low voltage circuitry from high voltage events in hybrid electric vehicle (HEV) and electric vehicle (EV) systems, hence there will not be any need for cooling system to reduce the temperature to below 125°C (the maximum temperature Grade 1-qualified integrated circuits (ICs) can support).

The ISO7741E-Q1 can be used in high-temperature areas of the HEV/EV systems without increasing the bill of materials or design complexity. They have a high typical common-mode transient immunity of ±100 kV/µs; hence they can provide additional system-level protection in the harsh automotive environment.

By combining ISO7741E-Q1 with the TCAN1044EV-Q1 Grade 0 CAN FD transceiver, engineers can meet the ISO timing standard for high-speed automotive communications that allows extended reach and reliability of signals across IVNs (in-vehicle network) without diminishing data rates. For more information about ISO771E-Q1, visit the official website of Texas Instruments.

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