Solid state relays and isolators

Solid-state relays and isolators delivering reliable switching, galvanic isolation and system protection for industrial automation and control channels.

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Reliable switching and galvanic isolation for power electronics applications

Infineon offers solid-state relays (SSRs) and isolators (SSIs) based on photovoltaic (PV) and coreless transformer (CT) technologies. These solutions provide reliable switching, signal isolation and galvanic isolation between electrical circuits, helping improve system safety, reliability and performance in demanding power electronics applications.

Our portfolio supports a wide range of industrial automation, motor drive, power supply, renewable energy and battery management system designs.

 

Product categories include:

  • Solid-state isolators (SSI): Isolated, low-power DC voltage sources that directly drive MOSFET and IGBT gates while transferring signals and energy across a galvanic isolation barrier.
  • Solid-state relays (SSR): Semiconductor-based switches that combine galvanic isolation with MOSFET or IGBT output technology for reliable load control and long operational life.

Gate drive isolation for high-voltage switching applications

Infineon's photovoltaic isolators (PVI) provide optically isolated outputs that can directly drive discrete MOSFET and IGBT gates without requiring an external power supply for biasing the output side. By transferring both signals and energy across a galvanic isolation barrier, these devices simplify isolated gate drive designs while supporting high-voltage switching applications.

Available in single- and dual-channel configurations, photovoltaic isolators enable designers to develop custom solid-state relay solutions capable of controlling loads exceeding 1000 V and 10 A. Fast turn-off circuitry supports efficient and reliable performance in industrial automation, motor drives, power supplies and energy systems.

Solid-State Relay solutions with certified Galvanic Isolation

Infineon's photovoltaic relays (PVR) are remotely controlled solid-state relays that provide galvanic isolation between control and load circuits. Utilizing power MOSFETs or IGBTs driven by an integrated photovoltaic generator, they deliver reliable switching without requiring a power supply for biasing the output-side.

PVRs are ideal for applications ranging from low-level signal switching in instrumentation and data acquisition systems to lower-power loads in industrial control and process automation. Optical isolation helps protect users and sensitive electronics from high-voltage transients while improving overall system reliability and safety.

High-speed signal isolation with integrated protection features

Infineon's solid-state isolators based on coreless transformer (CT) technology use magnetic coupling to transfer signals and energy across a galvanic isolation barrier. This approach enables fast switching performance, robust signal isolation and reliable operation without requiring a power supply for biasing the output-side.

Integrated features such as fast turn-on and turn-off, overcurrent protection and overtemperature protection help simplify system design and improve reliability. CT-based isolators are ideally suited for use with CoolMOS™, OptiMOS™, and TRENCHSTOP™ IGBT devices, enabling efficient solid-state relay and gate driver solutions.

These devices are widely used in industrial automation, battery management systems, power supplies, renewable energy systems and other high-performance power electronics applications where efficiency, reliability and electrical isolation are critical.

Reliable switching and galvanic isolation for power electronics applications

Infineon offers solid-state relays (SSRs) and isolators (SSIs) based on photovoltaic (PV) and coreless transformer (CT) technologies. These solutions provide reliable switching, signal isolation and galvanic isolation between electrical circuits, helping improve system safety, reliability and performance in demanding power electronics applications.

Our portfolio supports a wide range of industrial automation, motor drive, power supply, renewable energy and battery management system designs.

 

Product categories include:

  • Solid-state isolators (SSI): Isolated, low-power DC voltage sources that directly drive MOSFET and IGBT gates while transferring signals and energy across a galvanic isolation barrier.
  • Solid-state relays (SSR): Semiconductor-based switches that combine galvanic isolation with MOSFET or IGBT output technology for reliable load control and long operational life.

Gate drive isolation for high-voltage switching applications

Infineon's photovoltaic isolators (PVI) provide optically isolated outputs that can directly drive discrete MOSFET and IGBT gates without requiring an external power supply for biasing the output side. By transferring both signals and energy across a galvanic isolation barrier, these devices simplify isolated gate drive designs while supporting high-voltage switching applications.

Available in single- and dual-channel configurations, photovoltaic isolators enable designers to develop custom solid-state relay solutions capable of controlling loads exceeding 1000 V and 10 A. Fast turn-off circuitry supports efficient and reliable performance in industrial automation, motor drives, power supplies and energy systems.

Solid-State Relay solutions with certified Galvanic Isolation

Infineon's photovoltaic relays (PVR) are remotely controlled solid-state relays that provide galvanic isolation between control and load circuits. Utilizing power MOSFETs or IGBTs driven by an integrated photovoltaic generator, they deliver reliable switching without requiring a power supply for biasing the output-side.

PVRs are ideal for applications ranging from low-level signal switching in instrumentation and data acquisition systems to lower-power loads in industrial control and process automation. Optical isolation helps protect users and sensitive electronics from high-voltage transients while improving overall system reliability and safety.

High-speed signal isolation with integrated protection features

Infineon's solid-state isolators based on coreless transformer (CT) technology use magnetic coupling to transfer signals and energy across a galvanic isolation barrier. This approach enables fast switching performance, robust signal isolation and reliable operation without requiring a power supply for biasing the output-side.

Integrated features such as fast turn-on and turn-off, overcurrent protection and overtemperature protection help simplify system design and improve reliability. CT-based isolators are ideally suited for use with CoolMOS™, OptiMOS™, and TRENCHSTOP™ IGBT devices, enabling efficient solid-state relay and gate driver solutions.

These devices are widely used in industrial automation, battery management systems, power supplies, renewable energy systems and other high-performance power electronics applications where efficiency, reliability and electrical isolation are critical.

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