ADUM3223CRZ

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The ADUM3223CRZ is a differential isolated gate driver IC from Analog Devices, designed to drive power FETs and IGBTs. The device is designed to operate in a temperature range from -40 to + 125 °C and is qualified according to AEC-Q100.

The IC consists of a system controller, a low-side power switch, an isolated flyback, and isolated communications. The isolated voltage up to 3200 Vrms provides a strong protection against voltage transients and external noise. The integrated closed-loop current sensing ensures fast overcurrent protection with minimal impact on the circuit.

The ADUM3223CRZ is designed to be used in isolated power converters such as AC-DC and DC-DC applications, especially those requiring fast switching speeds. The high-frequency switching capabilities (6 MHz) make it suitable for high-efficiency power supplies and other niche applications. The device helps reduce PCB size and simplifies gate driver designs in isolated power converters. It is also a great choice for applications where harsh environments are expected, since the -40 to +125 °C temperature range ensures reliable operation in extreme conditions.

The ADUM3223CRZ is based on an isolated half-bridge topology that supports PWM control as well as voltage/current shape control. The integrated low-side power switch eliminates the need for external switches, saving cost and PCB space. The integrated overcurrent protection features a fast response time and can be enabled or disabled, making the device suitable for applications with fast overcurrents. The device also includes a built-in deadtime control feature that prevents the voltage spikes associated with primary current transients.

The ADUM3223CRZ also features a high-frequency switching capability of up to 6 MHz, suitable for high-efficiency power supplies and other niche applications. The device is also capable of supplying up to 1.4A of peak current to the primary side, allowing the driver to handle higher power loads. In addition, the device includes integrated low-noise analog and digital isolation features, providing greater immunity to EMI and other interference sources.

The integrated power supply monitoring feature also allows the driver to monitor the power supply voltage. This feature can be used to detect overvoltage or undervoltage shut down, allowing the power supply to remain within the specified operating range. The device includes a variety of protection features that guard against faults in the power converter, such as short-circuit or overcurrent protection.

The ADUM3223CRZ is a reliable and versatile power converter IC that can be used in a wide variety of settings, from harsh environments to high-efficiency power supplies. The integrated features and high-frequency switching capabilities make it a great choice for a wide range of applications.

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