HEV/EV systems operating at 125°C or higher
IVN signal protection function and communication distance improvement


Texas Instruments (TI) announced on the 3rd that it is launching a digital isolator product that meets the Grade 0 ambient operating temperature specifications of the AEC-Q100 standard.

ISO7741E-Q1 features a 1.5kV _RMS operating voltage and meets Grade 0 temperature requirements up to 150°C. Using a new isolator can better protect low-voltage circuits in hybrid electric vehicle (HEV) and electric vehicle (EV) systems from high-voltage situations.

Therefore, it is possible to avoid using a cooling system to lower the temperature below 125°C, which is the maximum temperature that a Grade 1 standard IC can support.

In addition, it has a high rated common mode transient resistance of ±100kV/ms and provides additional system-level protection in harsh vehicle environments with IEC 61000-4-2 contact discharge protection of ±8kV.

In addition, when implementing CAN FD (Controller Area Network Flexible Data Rate) communication in a system design, combining the new TCAN1044EV-Q1 Grade 0 CAN FD transceiver with the ISO7741E-Q1 can meet the ISO 11898-2:2016 timing standard for high-speed communication in vehicles and improve the protection function and communication range of in-vehicle network (IVN) signals.

The ISO7741E-Q1 is available in a 10.3mm x 7.5mm 16-pin SOIC package at $1.49 per 1,000-unit quantity. It can be purchased through TI and authorized distributors. The Grade 0 CAN FD transceiver TCAN1044EV-Q1 is available in a 4.9mm x 3.91mm 8-pin SOIC package at $0.43 per unit for 1,000-unit quantities, and is currently available for purchase as prototypes only through TI.