Solid-state relays
Eliminate moving parts with isolation to achieve higher system reliability with integrated power and signal isolation
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Isolated switch driver (external FET)
Control external power switches (MOSFET, IGBT, SiC and SCR) through an isolation barrier with up to 5k VRMS of reinforced isolation, multiple gate drive voltages, and fault diagnostic options.
Isolated switch (internal FET)
Control integrated high-voltage MOSFETS (up to 1.2 kV, 50 mA) through an isolation barrier with up to 3.75k VRMS of basic isolation, multiple channel options, and 2 mA of avalanche current protection
Related categories
New products
Extended temperature range, isolated switch driver with integrated 10V gate supply
Approx. price (USD) 1ku | 20.00
Automotive 1200V configurable precision resistor divider with integrated switch
Approx. price (USD) 1ku | 2.00
Isolated switch driver with 17V gate supply and dual isolated comparators
Approx. price (USD) 1ku | 1.90
Automotive reinforced isolated switch driver with 17V gate supply and dual isolated comparators
Approx. price (USD) 1ku | 1.99
Automotive active pre-charge controller with 17V isolated gate driver and bias supply
Approx. price (USD) 1ku | 1.99
Benefits of our solid-state relays
Higher system reliability & best-in-class isolation
Reduce the number of moving parts in your design and enable basic isolation up to 3.75 kVrms and reinforced isolation up to 5 kVrms.
Integrated power & signal isolation
Reduce your solution size and cost with our solid-state relays which integrate the power and signal transfer over an isolation barrier in a single chip.
High accuracy for improved system safety
Detect insulation faults quickly and with higher accuracy by pairing our solid-state relays with a battery monitor in 800-V battery management systems.
Technical resources
How to achieve higher-reliability isolation and a smaller solution size with solid
Why Pre-Charge Circuits Are Necessary in High Voltage Systems
Cascoding Two TPSI3050 Isolated Switch Drivers to Increase Gate Drive Voltage
Discover featured applications
Isolated switches and drivers for aerospace and defense applications
The isolation technologies in our solid-state relay portfolio of both isolated switches and drivers provide significant reliability and size reductions. With features such as an integrated isolated bias supply, fault feedback and auxiliary power, you can efficiently design systems such as flight control units, aircraft battery-management systems and power-conversion units.
Featured resources
- TIDA-050059 – Overcurrent and overtemperature protection for solid-state relays reference design
- TIDA-050058 – Zero-cross switching for solid-state relays reference design
- TIDA-050063 – High-voltage solid-state relay active precharge reference design
- TPSI3050 – Isolated switch driver with integrated 10-V gate supply
- TPSI3100 – Isolated switch driver with 17V gate supply and dual isolated comparators
- TPSI2140-Q1 – Automotive 1200-V 50-mA isolated switch with 2-mA avalanche rating
- How to design high-voltage systems with higher reliability while reducing solution – Technical article
- How to achieve higher-reliability isolation and a smaller solution size with solid – Technical article
Isolated switches and drivers for insulation resistance monitoring in high-voltage battery packs
Battery pack passive balancing designs often require the resolution of voltage and temperature measurement at the cell level, and accurate current sensing at the pack level.
Our integrated solid-state relays and resources help you create designs for battery disconnect units, battery control units and wired cell-supervisor circuits, enabling highly accurate monitoring and control over high-voltage battery stacks.
Featured resources
- TPSI2140-Q1 – Automotive 1200-V 50-mA isolated switch with 2-mA avalanche rating
- TPSI3050-Q1 – Automotive reinforced isolated switch driver with integrated 10-V gate supply
- TPSI3100-Q1 – Automotive reinforced isolated switch driver with 17V gate supply and dual isolated comparators
Isolated switches and drivers for onboard charging and high-voltage DC/DC conversion applications
Our solid-state relay portfolio of integrated isolated bias supplies, auxiliary power supplies, and bidirectional communication across an isolation barrier enables you to build smaller and more reliable onboard charging and DC/DC conversion systems in hybrid electric vehicles (HEVs) and electric vehicles (EVs). With both integrated and external field-effect transistors, TI's magnetic and capacitive isolation technologies allow for smarter and more integrated onboard charging (OBC) and DC/DC solutions.
Featured resources
- TIDA-010232 – AFE for insulation monitoring in high-voltage EV charging and solar energy reference design
- TIDA-01513 – Automotive High-Voltage and Isolation Leakage Measurements Reference Design
- TIDA-050059 – Overcurrent and overtemperature protection for solid-state relays reference design
- TPSI3050 – Isolated switch driver with integrated 10-V gate supply
- TPSI3100 – Isolated switch driver with 17V gate supply and dual isolated comparators
- TPSI2140-Q1 – Automotive 1200-V 50-mA isolated switch with 2-mA avalanche rating
Isolated switches and drivers for EV charging stations
Our integrated circuits and reference designs help you create smarter and more efficient power modules that can charge electric vehicles (EVs). Whether it is a power factor correction (PFC) stage or a DC/DC power stage design, we have the right circuits to design an efficient power module.
DC fast charging power module designs require expertise to enable accurate sensing and control of power output.
Featured resources
- TIDA-010232 – AFE for insulation monitoring in high-voltage EV charging and solar energy reference design
- TIDA-050058 – Zero-cross switching for solid-state relays reference design
- TIDA-050059 – Overcurrent and overtemperature protection for solid-state relays reference design
- TPSI2140-Q1 – Automotive 1200-V 50-mA isolated switch with 2-mA avalanche rating
- TPSI3050-Q1 – Automotive reinforced isolated switch driver with integrated 10-V gate supply
- TPSI3100-Q1 – Automotive reinforced isolated switch driver with 17V gate supply and dual isolated comparators
- Why Pre-Charge Circuits Are Necessary in High Voltage Systems – Application brief
- How solid-state relays simplify insulation monitoring designs in high-voltage applications – Technical article
Isolated switches and drivers for EV traction inverters to recapture energy in regenerative braking
Our integrated circuits and reference designs allow you to create high- and low-voltage traction inverter designs that efficiently convert DC power to alternating phases of power to drive multiphase motors.
Benefits:
- Safe and efficient control and protection of the power switch (insulated gate bipolar transistor or silicon carbide).
- Position sensing of the motor shaft (resolver replacement).
- A redundant architecture to enable implementation of the system at the highest safety level.
Featured resources
- TIDA-010232 – AFE for insulation monitoring in high-voltage EV charging and solar energy reference design
- TIDA-050058 – Zero-cross switching for solid-state relays reference design
- TIDA-050059 – Overcurrent and overtemperature protection for solid-state relays reference design
- TPSI3050-Q1 – Automotive reinforced isolated switch driver with integrated 10-V gate supply
- TPSI3100-Q1 – Automotive reinforced isolated switch driver with 17V gate supply and dual isolated comparators
- TPSI2140-Q1 – Automotive 1200-V 50-mA isolated switch with 2-mA avalanche rating
- How to achieve higher-reliability isolation and a smaller solution size with solid – Technical article
- Why Pre-Charge Circuits Are Necessary in High Voltage Systems – Application brief
Isolated switches and drivers for factory automation in PLC applications
Our solid-state relay portfolio, which includes features such as bidirectional communication, integrated isolated bias supplies and auxiliary power, can help you design safer and more efficient programmable logic controller (PLC) subsystems such as digital output modules, mixed modules, and digital input rail power-supply modules.
Featured resources
- Programmable logic control, distributed control system, programmable automation controller – Digital output module
- Programmable logic control, distributed control system, programmable automation controller – Digital input module
- Programmable logic control, distributed control system, programmable automation controller – Mixed module (analog and digital I/Os)
- Circuit breakers and interrupters – Circuit breaker (air, molded case, vacuum)
- TIDA-050058 – Zero-cross switching for solid-state relays reference design
- TIDA-050059 – Overcurrent and overtemperature protection for solid-state relays reference design
- How to design high-voltage systems with higher reliability while reducing solution – Technical article
- How to achieve higher-reliability isolation and a smaller solution size with solid – Technical article
Design & development resources
Overcurrent and overtemperature protection for solid-state relays reference design
This reference design shows how to achieve overcurrent and overtemperature protection for a solid-state relay. The reference design features the TPSI3050-Q1 5-kVRMS reinforced isolated switch driver. TPSI3050-Q1 device integrates a laminate transformer to achieve isolation while transferring signal (...)
Zero-cross switching for solid-state relays reference design
This reference design shows how to achieve zero-cross switching (ZCS) with a solid-state relay. The reference design features the TPSI3050-Q1 isolated switch driver. TPSI3050-Q1 device integrates a laminate transformer to achieve isolation while transferring signal and power to the secondary side. (...)