Digital isolator withstands temperatures up to 150°C in HEV/EV systems
The ISO7741E-Q1 isolator features 1.5-kVRMS working voltage and supports temperatures up to the Grade 0 maximum of 150°C. The device enables engineers to better protect low-voltage circuitry from high-voltage events in hybrid electric vehicle (HEV) and electric vehicle (EV) systems and avoid having to design in cooling systems to reduce temperatures to below 125°C – the maximum temperature Grade 1-qualified ICs can support.
Grade 0-qualified ICs meet the requirements of the AEC-Q100’s highest temperature grade (-40°C to 150°C) and are designed to help engineers simplify design of HEV/EV systems in harsh environments, such as 48V HEVs where the co-existence of internal combustion engines and battery systems can heat the air around ICs beyond 125°C. With their operating tamperature range up to 150°C, TI’s new Grade 0 devices, the ISO7741E-Q1 and the TCAN1044EV-Q1, can be placed in high-temperature areas of HEV/EV systems without increasing bill of materials or design complexity.
The ISO7741E-Q1 uses TI’s capacitive isolation technology to provide a working voltage of 1.5 kVRMS and an isolation voltage of 5 kVRMS, enabling engineers to achieve more reliable operation of HEV/EV powertrain and HVAC systems that require signal transmission across an isolation barrier, such as starter generators, cooling fans and traction inverters.
This device provides additional system-level protection in harsh automotive environments due to its high typical common-mode transient immunity of ±100 kV/µs and a ±8-kV International Electrotechnical Commission (IEC) 61000-4-2 contact discharge protection.
More information: www.ti.com/ISO7741E-Q1-pr-eur.
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