IR21834

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Power semiconductor devices are widely used in power management and control applications today. Recent advances in power semiconductor technology have brought about a wide range of gate driver products. This article covers the application field and working principle of IR21834 gate driver, a high-voltage integrated gate driver used in a variety of power control and management applications.

IR21834 provides a cost-effective, high-performance solution for driving a wide variety of power semiconductor devices. It is a dual high-voltage gate driver, which contains two independent high-voltage gate drivers to drive different power semiconductor devices. This gate driver can deliver up to ±15V gate voltage and provide a peak output current of up to 4A. It also features an adjustable gate protection threshold to protect the power device from overvoltage with an introduction of a soft-start feature. The built-in over-current protection feature also prevents damage to the power device.

Application Field

The IR21834 is primarily designed for power management and control applications, such as power converters, power supplies, motor control, and inverter applications. It is also suitable for applications that require an external power source, such as a photovoltaic system, energy storage system, or battery management system. In these applications, the gate driver is used to control the power semiconductor devices, such as IGBTs, MOSFETs, MOS transistors, etc. The gate drivers provide the gate driving voltage to turn on and turn off the power semiconductor devices.

Working Principle

The IR21834 uses an integrated power MOSFET in order to control and drive the power device. The input voltage (Vin) is applied to the gate driver resulting in the gate driver turning on and off the power MOSFET, which subsequently drives and controls the power device. The input can be a digital signal, an analog voltage, or a pulse train.

The gate driver also features over-current and over-voltage protection circuits. When an over-current or over-voltage condition is detected, the gate protection circuit is activated and the power device is protected from potentially damaging situations. This ensures reliable operation of the power device and improves system reliability.

In addition, the gate driver provides a soft-start feature that reduces the turn-on inrush current. This feature reduces the stress on the power device and helps to ensure the safe operation of the power device. The adjustable gate protection threshold allows the user to set the gate voltage level at which the protection circuit is triggered.

IR21834 is also protected from common mode voltage spikes, eliminating external clamp components. The gate driver has an operating temperature range of -40°C to +125°C, making it suitable for use in a wide variety of applications. The integrated gate drive voltage is adjustable from 4.5V to 15V, allowing it to be used in applications that require high gate voltage.

Conclusion

IR21834 is a high-voltage, dual gate driver that is suitable for a wide range of power management and control applications, such as power converters, power supplies, motor control and inverters. It provides over-current and over-voltage protection circuits, adjustable gate protection threshold and soft-start feature. It is also protected from common mode voltage spikes and operates within operating temperature range of -40°C to +125°C.

The specific data is subject to PDF, and the above content is for reference