Første digitale isolator med Grade 0 kompatiblitet
Texas Instruments lancerer, hvad firmaet betegner som industriens første Grade 0 digitale isolator, der sikrer pålidelig kommunikation i HEV/EV systemer, der opererer med temperaturer over 125°C.
Texas Instruments has introduced the industry’s first digital isolator that is qualified to the Grade 0 ambient operating temperature specification of the Automotive Electronics Council (AEC) Q100 standard. The ISO7741E-Q1 features an industry-leading 1.5-kVRMS working voltage and supports temperatures up to the Grade 0 maximum of 150°C.In addition, when implementing Controller Area Network Flexible Data Rate (CAN FD) communications in system designs, engineers can increase in-vehicle network (IVN) signal protection and reach by using the ISO7741E-Q1 with the new TCAN1044EV-Q1 Grade 0 CAN FD transceiver.
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 48-V HEVs where the co-existence of internal combustion engines and battery systems can heat the air around ICs beyond 125°C. With reliable performance 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.
Highest isolation rating and high electromagnetic compatibility
The ISO7741E-Q1 uses TI’s capacitive isolation technology to provide the industry’s highest 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.
By combining the ISO7741E-Q1 and the TCAN1044EV-Q1 in CAN FD bus designs, engineers can meet the International Organization for Standardization (ISO) 11898-2:2016 timing standard for high-speed automotive communications, allowing for extended reach and reliability of signals across IVNs without diminishing data rates.
