IR21814

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The IR21814 MOSFET driver is a versatile and advanced IC specifically designed to drive a wide range of MOSFET transistors. The device operates from a 5V supply and can be used for both logic signal and PWM signal applications. IR21814 is a part of the Infineon OptiMOS Brand, which are ideal for high-performance switching designs where power, efficiency, and noise avoidance are important considerations.

The driver is composed of a low-side and a high-side power MOSFET interface and combines a high-efficiency gate drive circuit with a wide range of protection features. It also features on-chip current sensing, ESD protection, over-voltage protection, reverse differential and shoot-through protection, and soft-start. The device features a propagation delay time of 1.2us and an enable and shutdown logic input.

The IR21814 gate driver can be used in a variety of applications, such as motor control, DC-DC converters, and power supply applications. The gate driver is suitable for high-power applications, such as power supplies and DC-DC converters up to 800V, and it can deliver up to 8A of peak current. The drivers can also be used to drive load switches, VRM circuits, and power FETs in high-frequency switching applications.

The working principle of the IR21814 gate driver is based on an internal MOSFET driver circuit that can drive the gates of power MOSFETs with a high-current supply. The driver is powered by a 5V supply, which is then supplied to the internal driver circuit. This circuit then switches the gates of the power MOSFETs to deliver the desired current flow.

In addition to the 5V supply, the driver requires a logic level input signal to control the gate of the power MOSFETs. This can be a 3.3V or 5V PWM signal, i/p signal, or a low frequency signal. A separate inhibit input should be used when the device needs to be disabled. The gate driver also features overload and reverse protection, as well as over-temperature protection.

The IR21814 is a versatile and efficient MOSFET driver that can be used in a variety of applications. It is designed to facilitate high-power applications and can deliver up to 8A of peak current. The device features a wide range of protection features and is powered by a 5V supply. The gate driver is based on an internal MOSFET driver circuit that can drive the gates of power MOSFETs with a high-current supply.

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