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TI’s Solid-State Relays To Make EVs Safer


Texas Instruments (TI) has announced a new portfolio of solid-state relays. The portfolio includes TPSI3050-Q1, an isolated switch driver with an integrated 10-V gate supply and the TPSI2140-Q1, a 1400V, 50 mA isolated switch. The new series has a smaller size and lower power consumption along with a lower cost making them suitable for use in Electric Vehicles (EV). These solid-state relays are capable of achieving higher system reliability with integrated isolation technology, thus making the EVs safer.

According to the company, these isolated solid-state relays provide a smaller solution size compared to any rival’s product which further helps in reducing the bill-of-materials (BOM) for systems like powertrain and 800-V battery-management systems. Both the TPSI3050-Q1 and the TPSI2140-Q1  integrate power and signal isolation across a single barrier, therefore improving the reliability, while significantly reducing solution size and cost compared to existing electromechanical relays and solid-state photo relays. TI also claims that the devices are the first that includes ICs designed for high-voltage industrial applications.

“High-voltage systems are becoming more prevalent, especially with the increased adoption of EVs. At TI, we are strongly focused on finding new ways for system designers to solve complex isolation challenges, such as ensuring reliable and safe vehicle operation as the industry transitions to 800-V batteries, while also reducing solution size and cost,” said Troy Coleman, vice president, and general manager of Power Switches, Interface, and Lighting at Texas Instruments. “By integrating more functionality within our isolation technology, our new solid-state relays enable engineers to reduce the size, cost, and complexity of high-voltage power supplies while maintaining the safety of next-generation automotive and industrial systems.”

The TPSI3050-Q1 offers an operational lifetime of over 10 times when compared to an electromechanical relay of a similar rating, and the TPSI2140-Q1 offers basic isolation up to 3.75 kVRMS, enabling it to achieve more than four times higher time-dependent dielectric breakdown reliability than solid-state photo relay. The new solid-state relays are capable of disconnecting and re-connecting the loads in a few microseconds – compared to milliseconds taken by the electromechanical relays, therefore, enabling safer operation of high-voltage automotive systems.

 

 





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