AQW214EAX

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Solid State Relays

AQW214EAX is a type of solid state relay which is specifically designed for high current applications. The device utilizes a patented fused cell technology to deliver highly reliable, lossless switching of large currents without any compromises. Its key features include: high-speed switching with no hysteresis, integrated temperature protection, low thermal resistance, and high-current switching capability.

The AQW214EAX solid-state relay offers an efficient, cost-effective solution for power as well as signal switching applications. It is based on a switch-mode design and utilizes insulated-gate bipolar transistors (IGBTs) for efficient current handling. In addition to low power losses, the low on-state voltage dropping of the switch confers an even lower gate drive voltage and current requirements to the control circuitry, which significantly reduces additional costs for power supply components.

Application Field

The AQW214EAX is primarily designed for high-current applications such as electro-mechanical machines, robotic systems, heating and cooling systems, motors, and other systems requiring at least 800A of continuous output. It can also be used in high-voltage systems up to 500V. The circuit offers a wide range of switching speeds, from 50kHz up to 400kHz, depending on the user’s requirement.

Working Principle

The AQW214EAX solid state relay works on a switching principle. In the "on" state, current flows from the main control through the IGBTs into the load, and when the "off" state is enabled, current is not passed through. The switch is activated and deactivated by a control signal, which is generated by the controller connected to the solid state relay. This control signal applies an electromagnetic force on the IGBTs, which flips the relay’s switching state.

The AQW214EAX solid state relay is designed to provide accurate switching performance, for high-current applications. Its integrated fuse cell circuit eliminates any hard switching issue, and delivers highly reliable, lossless switching. Further, the switch-mode design allows for high-speed operation without generating any detrimental temperature effect or hysteresis.

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