ADUM4120ARIZ

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The ADUM4120ARIZ Isolators - Gate Drivers from Analog Devices are designed to provide high voltage isolation between primary and secondary channels while operating efficiently at low supply voltages and low power consumption. In addition, they are designed to offer a wide range of isolation levels to suit a variety of applications. This datasheet outlines the various features and specifications of the ADUM4120ARIZ, as well as its applications and working principle.

The ADUM4120ARIZ is an integrated, isolated, half-bridge gate driver. It contains both a low voltage primary and a high voltage secondary, which are isolated using a proprietary magnetically isolated transformer. The device provides logic level modulation of the output voltage, allowing it to be used as a gate driver for MOSFETs and IGBTs. The device is designed to operate at low supply voltage from 3.3V to 20V, and is capable of providing up to 500mA of output current. It features a high switched frequency range of up to 400kHz, and is equipped with a wide range of protection features.

The ADUM4120ARIZ is operated using a single 8-bit logic control signal, either 3.3V or 5V depending on the power supply. The logic control signal is converted into a modulated PWM signal, and then applied to the primary side of the device. The device then accurately translates the PWM signal to the secondary side, allowing for controlled switching of the output power. This allows the ADUM4120ARIZ to switch high capacitive loads with low probability of damage, making it suitable for controlling high power switching circuits.

The ADUM4120ARIZ can be used in a variety of applications including motor control, home appliances, automotive systems, and industrial automation. It is also suitable for powering gate drivers, isolation amplifiers, safety switches, signal conditioning amplifiers, and communication circuits. The high level of isolation provided by the device, combined with its high efficiency and low power consumption, make it a perfect choice for these applications.

In summary, the ADUM4120ARIZ is a high-efficiency, low-power, isolated, half-bridge gate driver for MOSFET and IGBT switching circuits. It is an ideal solution for applications requiring high level of isolation and reliable operation over a wide temperature range. The device is capable of providing up to 500mA of output current and offers a wide range of protection features. Its compact size and low price make it an attractive alternative to larger, more expensive solutions.

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