IRKH71/08A

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Thyristors, often referred to as silicon control rectifiers (SCRs), are semiconductor devices that act as switches, allowing current to pass through them in one direction only. They have a wide range of applications, including in heating systems, lighting, motor speed control, switching, and motor start-up. The IRKH71/08A module is a fully integrated, static switching thyristor module that is optimized for motor drive applications. It includes a bidirectional thyristor, a gate drive circuit, an over-load protection circuit, a voltage reference circuit, and a thermal shutdown circuit.

Working Principle

The IRKH71/08A module is designed for bidirectional operation and is suitable for switching medium and high power loads in motor drives and other applications. The module operates by enabling bidirectional current flow between two internal terminals and two external terminals. When the module is in a non-conducting state, no current is allowed to flow. When the module is in an “ON” state, it allows current to flow between its external terminals, depending on the direction of the applied gate voltage. The module is designed to be operated from a single-line voltage power supply.

Features and Benefits

The module includes a wide range of features, including integrated over-load protection, a static gate drive, and a reference voltage circuit. The module is designed to provide reliable, consistent switching of loads of up to 500 amps. In addition, the module features fast switching, with a minimum turn-on and turn-off times of 5μs. The module also features a wide operating temperature range, and is designed to provide reliable operation in ambient temperatures between -40°C and +90°C. Finally, the module is designed to be highly efficient, with a maximum switching voltage drop of less than 0.3V.

Applications

The IRKH71/08A module has a wide range of applications, which include motor drives, lighting, heating systems, and in applications that require accurate and reliable bidirectional switching. The module is designed to provide reliable switching of loads in motor drives, including applications such as AC Drive, DC Drive, Linear and Rotary Motor, and Motor Speed Control. The module is also suitable for lighting applications, including LED Lighting, Street Lighting, and Area Lighting. The module is also ideal for heating applications, including Electric Heating, Industrial Heating, and Electrothermal Heating. Finally, the module is suitable for applications that require accurate and reliable bidirectional switching, including Industrial Automation and Military/Aerospace Applications.

Conclusion

The IRKH71/08A Module is a fully integrated, static switching thyristor module that is optimized for motor drive applications. It incorporates a wide range of features and benefits, including integrated over-load protection, a static gate drive, a reference voltage circuit, fast switching, and a wide operating temperature range. The module is suitable for a range of motor drive and other applications, including AC Drive, DC Drive, Linear and Rotary Motor, Motor Speed Control, LED Lighting, Street Lighting, Area Lighting, Electric Heating, Industrial Heating, Electrothermal Heating, Industrial Automation, and Military/Aerospace Applications. The module is an ideal solution for reliable, consistent bidirectional switching of loads in a wide range of applications.

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