TI drives separation technology with new solid-state relays that provide industry-leading reliability

The new portfolio will help make EVs safer while reducing solution size by up to 90% and costs by up to 50%.

Bangalore (May 10, 2022) – Texas Instruments (TI) (Nasdaq: TXN) today, based on more than 20 years of experience in developing new insulation manufacturing technologies and integrated circuits (ICs) for high voltage systems. Introducing a new solid portfolio-state relays that provide industry-leading reliability and enhance the safety of electric vehicles (EVs), including automotive-certified insulated drivers and switches. The new isolated solid-state relay offers the smallest solution size while reducing the bill of materials (BOM) cost for powertrains and 800 V battery management systems. See ti.com/ssr-pr for more information.

TPSI3050-Q1 isolated switch driver with integrated 10V gate power supply and TPSI2140-Q11,400V, 50mA isolated switch uses a unique approach to significantly reduce while improving reliability, single barrier Integrates power and signal insulation throughout. Solution size and cost compared to existing electromechanical relays and solid state photo relays. These devices are the first in a new solid-state relay portfolio, including ICs designed for high-voltage industrial applications. For more information on the benefits of solid-state relays, read the technical article “How to achieve more reliable isolation and smaller solution sizes with solid-state relays.”


“High-voltage systems are becoming more prevalent, especially with the increasing adoption of EVs. TI ensures reliable and safe vehicle operation as the industry moves to 800 V batteries, while reducing the size and cost of the solution. The focus is on system designers finding new ways to solve complex isolation challenges, such as reductions, “says Troy Coleman. , Vice President and General Manager of Power Switches, Interfaces and Lighting at Texas Instruments. “By integrating more features into our insulation technology, our new solid-state relays allow engineers to maintain the safety of next-generation automotive and industrial systems while maintaining the size, cost, and cost of high-voltage power supplies. You can reduce the complexity. “

Integrated isolation technology enhances system reliability

The new solid-state relays can disconnect and connect loads through a single insulation barrier in microseconds compared to milliseconds for electromechanical relays, enabling safer operation of high voltage automotive systems. Become. Offering enhanced insulation up to 5kVRMS, the TPSI3050-Q1 also offers a 10x longer operating life than electromechanical relays, which can deteriorate over time. In addition, the TPSI2140-Q1 provides basic insulation up to 3.75 kVRMS, providing more than four times higher time-dependent breakdown reliability than solid-state photo relays.

Reduce system size and cost with integrated power and signal isolation

Solid-state relays integrate power and signal transfer into a single chip, while eliminating at least three components from the design, significantly reducing solution size and reducing BOM costs by up to 50%. The TPSI3050-Q1 reduces solution size by up to 90% compared to mechanical relay solutions by integrating the functionality of an isolated power supply, digital isolator, and gate driver. The TPSI2140-Q1 reduces the solution size by up to 50% compared to traditional solid-state photo relay solutions by integrating signal field effect transistors and resistors, eliminating the need for read relays.

Increased safety of 800VEV battery management system

Designed for high voltage measurements and insulation monitoring, the TPSI2140-Q1 works with battery pack monitors such as the BQ79631-Q1 to detect insulation failures in 800V battery management systems faster and more accurately than solid-state photo relays. increase. The TPSI2140-Q1 allows the use of resistors less than 1 MΩ, withstands over 300% more avalanche current than traditional photo relays, and enables safer human-system interactions.

Package, availability, price

The TPSI3050-Q1 and TPSI2140-Q1 are available in pre-production quantities of 1,000 units and are only available on TI.com for $ 1.99 and $ 2.75, respectively. Engineers can evaluate these products using the TPSI3050Q1EVM and TPSI2140Q1EVM evaluation modules. These are available at TI.com for $ 49 each.

Insulation products that vary by design

Solid-state relays are the latest addition to TI’s growing product portfolio for separating signals, power, or both. Other new products include the UCC14240-Q1 isolated DC / DC bias power supply module, which leverages TI’s unique integrated transformer technology for high power density, low electromagnetic interference, and high reliability, and the industry’s first AMC23C12. It will be. Enhanced isolated comparator. The AMC23C12 combines the capabilities of a standard comparator with a galvanic insulation barrier to reduce solution size by 50% and provide ultra-fast isolated bidirectional overcurrent and overvoltage detection in less than 400ns. See https://www.ti.com/isolation for more information.

https://electronicsmaker.com/ti-drives-isolation-technology-forward-with-new-solid-state-relays-that-provide-industry-leading-reliability TI drives separation technology with new solid-state relays that provide industry-leading reliability

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