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 1.4 kV, 50 mA) through an isolation barrier.
Related categories
New products
Automotive reinforced isolated switch driver with integrated 15-V gate supply
Automotive 1400-V, 50-mA, isolated switch with 2-mA avalanche rating
Automotive reinforced isolated switch driver with integrated 10-V gate supply
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
Design & development resources
Overcurrent and overtemperature protection for AC solid state relay 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. (...)