Solid-state relays
Eliminate moving parts 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.
Isolated switch (internal FET)
Control integrated high-voltage MOSFETs (up to 1.2 kV, 50 mA) through an isolation barrier.
Related categories
New products
Automotive reinforced isolated switch driver with integrated 15-V gate supply
Automotive reinforced isolated switch driver with integrated 10-V gate supply
Automotive 1200-V, 50-mA, isolated switch with 2-mA avalanche rating
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
Discover featured applications
Isolated switches and drivers for insulation resistance monitoring in high-voltage battery packs
Enable highly accurate monitoring and control over high-voltage battery stacks. Our integrated solid-state relays and resources help you create designs for battery pack-passive balancing, battery disconnect unit, battery control unit and wired cell supervisor circuit. Battery pack-passive balancing designs often require:
- Resolution of voltage and temperature measurement on cell level
- Accurate current sense on pack 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
- TPSI2140-Q1 – Automotive 1200-V, 50-mA, isolated switch with 2-mA avalanche rating
- TPSI3052-Q1 – Automotive reinforced isolated switch driver with integrated 15-V gate supply
- TPSI3050-Q1 – Automotive reinforced isolated switch driver with integrated 10-V gate supply
Isolated switches and drivers for traction inverters used in EVs for energy recapture in regenerative braking
Our integrated circuits and reference designs allow you to create traction inverter high and low voltage designs that efficiently convert DC power to alternating phases of power to drive multi-phase motors.
Traction inverter high and low voltage designs require:
- Safely and efficiently control and protect the power switch (IGBT/SiC)
- Position sensing of the motor shaft (resolver replacement)
- Following state-of-the-art architecture regarding system redundancy in order to allow implementation of the system on 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
- TPSI3052-Q1 – Automotive reinforced isolated switch driver with integrated 15-V gate supply
- TPSI2140-Q1 – Automotive 1200-V, 50-mA, isolated switch with 2-mA avalanche rating
Isolated switches and drivers for factory automation in programmable logic controller (PLC) applications
Our integrated circuits and reference designs enable you to build PLC equipment such as digital output module, enabling low-side and high-side driving capabilities, push-pull high frequency outputs known as pulse train output (PTO), inductive loads, isolation and protection.
Digital output module designs often require:
- Highly-efficient isolated power supply.
- Advanced protection and diagnostics.
Featured resources
- TIDA-050058 – Zero-cross switching for solid-state relays reference design
- TIDA-050059 – Overcurrent and overtemperature protection for solid-state relays reference design
- TPSI3050 – Isolated switch driver with integrated 10-V gate supply
- TPSI3052 – Isolated switch driver with integrated 15-V gate supply
- TPSI3052-Q1 – Automotive reinforced isolated switch driver with integrated 15-V gate supply
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
- TPSI3052-Q1 – Automotive reinforced isolated switch driver with integrated 15-V gate supply
- TPSI3050-Q1 – Automotive reinforced isolated switch driver with integrated 10-V gate supply
Isolated switches and drivers for solar energy management and storage
Our integrated circuits and reference designs help you accelerate development of solar string inverters, improving power density and efficiency while providing real-time communication and monitoring.
String inverter designs require innovative technology to achieve:
- Long system lifespan
- Low output distortion
- Accurate analog measurement of voltage and current
- High efficiency and power density
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 – Isolated switch driver with integrated 10-V gate supply
- TPSI3052 – Isolated switch driver with integrated 15-V gate supply
- TPSI2140-Q1 – Automotive 1200-V, 50-mA, isolated switch with 2-mA avalanche rating
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. (...)