Isolated CAN FD transceivers raise bus fault protection

Communication reliability and protection in industrial and automotive systems can be achieved with Texas Instruments’ ISO1042 and ISO1042-Q1 isolated CAN FD transceivers.

The company claims they offer the highest working voltage, highest immunity and lowest electromagnetic emissions and combine the industry’s highest bus fault protection, highest common-mode transient immunity (CMTI), and lowest electromagnetic emissions into a small package. With a higher working voltage than competing devices and faster communication speeds than the classic CAN standard, the ISO1042 and ISO1042-Q1 help engineers better protect low-voltage circuits and increase communication throughput in industrial applications such as grid infrastructure, motor drives and building automation, as well as hybrid electric vehicles and electric vehicles (HEVs/EVs), says TI.

The ISO1042 and ISO1042-Q1 isolated CAN FD transceivers have the industry’s highest working voltage; 1,000V rms and a withstand voltage of 5,000V rms. The ISO1042 and ISO1042-Q1 also feature longer lifetimes, resulting in improved system reliability, claims TI.

Bus fault protection is ±70 V, which provides a 20 per cent higher short-to-DC margin, enabling the ISO1042 and ISO1042-Q1 to protect 12-, 24- and 48V battery or power-supply systems during high-voltage shorts.

They are also claimed to have the highest electromagnetic immunity, with a CMTI of 85kV/micro seconds (minimum) with high ESD protection of ±8kV, using the International Electrotechnical Commission (IEC) testing standard.

Texas Instruments also claims that the ISO1042 and ISO1042-Q1 deliver the industry’s lowest electromagnetic compatibility (EMC) emissions, to maintain system signal integrity. The ISO1042-Q1 meets the automotive industry standard (IEC TS62228) for robust EMC.

Both transceivers support CAN FD speeds up to 5Mbits per second with a short loop delay of 215 nano seconds (maximum), enabling faster payload compared to classic CAN.

The ISO1042 and ISO1042-Q1 are available now. Basic and reinforced options of each device are available in either a 10.3 x 7.5mm, 16-pin or a 5.8 x 7.5mm, eight-pin SOIC package.

The ISO1042DWEVM and ISO1042DWVEVM evaluation modules are also available.