ADUM4121CRIZ

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The ADUM4121CRIZ is a high performance isolated gate driver from Analog Devices Inc. It is designed to drive a wide variety of large signal power devices and features a wide range of features including short circuit protection, EMI protection, and fault protection. The device is ideal for power applications such as motor driving, switching power supplies, motor control, and isolated power switching.

Application Field

The ADUM4121CRIZ gate driver can be used in a variety of applications where a high performance isolated gate driver is required. The device is particularly suited for driving power devices such as MOSFETs, IGBTs, and BJTs in applications such as AC/DC converters, motor drivers, and power switches. The device can also be used in isolation systems, power systems, and medical applications where superior performance is required.

Working Principle

The ADUM4121CRIZ works on a photocoupler (opto-isolator) principle. The primary side of the ADUM4121CRIZ works with the control signals from the secondary side, which are optically transferred. The signals are optically encoded from the primary side, received by a photodiode at the secondary side, and transferred to the control signal circuitry in the gate driver IC. The output driver stage is isolated from the input by the opto-isolator, providing superior electrical isolation.

The IC also includes a low-voltage CMOS logic device, which works with the photocoupler to ensure correct operation. This device is programmed with a programmed MPU that can be pre-configured to the customer\'s specified conditions. The IC also includes protection features such as under-voltage lockout, over-current protection, and EMI protection.

The ADUM4121CRIZ is designed to drive two N-channel MOSFETs in a half-bridge configuration. The two MOSFETs can be driven independently with independent gate voltages and different switching times. The device is designed with an adjustable dead-time control, allowing the user to adjust the dead-time between the two MOSFETs for optimal performance in a variety of applications.

The ADUM4121CRIZ is designed to provide superior performance in a variety of high-power applications. It is ideal for motor control applications, isolated power supplies, and other high-power applications where isolation and superior performance is required.

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