Digital isolator protects communications in HEV/EVs
High temperature automotive designs can be simplified and signal isolation improved using the ISO7741E-Q1, says Texas Instruments.
The ISO7741E-Q1 is claimed to be the industry’s first digital isolator that is qualified to the Grade 0 ambient operating temperature specification of the AEC-Q100 standard. It is also claimed to have an industry-leading 1.5kV RMS working voltage and supports temperatures up to the Grade 0 maximum of 150 degrees C.
The isolator enables engineers to better protect low-voltage circuitry from high-voltage events in hybrid electric vehicle (HEV) and electric vehicle (EV) systems where the co-existence of internal combustion engines and battery systems can heat the air around ICs beyond 125 degrees C and avoid having to design in cooling systems to reduce temperatures to below this level.
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, advises Texas Instruments.
With reliable performance up to 150 degrees C, 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, adds the company.
The high typical common-mode transient immunity of ±100kV per micro second and a ±8kV IEC 61000-4-2 contact discharge protection provide additional system-level protection in harsh automotive environments.
The ISO7741E-Q1 Grade 0 digital isolator is available now from TI and authorised distributors in a 10.3 x 7.5mm, 16-pin SOIC package.
Pre-production TCAN1044EV-Q1 Grade 0 CAN FD transceivers are available now, only from TI, in 4.9 x 3.91mm, eight-pin SOIC packages.
