ADUM4121-1CRIZ

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ADUM4121-1CRIZ is a member of Isolators - Gate Drivers family that provides solutions in scenarios such as motor control and HMI integrate with logic, control, and data conversion. This device is capable of providing galvanic isolation as well as reliable communication up to 1,500 VRMS galvanically for safety between the power and logic control of this components. This galvanic isolation also serves for preventing EMI/RFI noise injections to the supply voltage of the logic signal.

The ADUM4121-1CRIZ is a half-bridge high voltage isolator featuring active gate protection to ensure reliable operation of the MOSFETs and reduce power consumption. With programmable open-drain output protection, the device is optimized for applications that require robust but cost-effective solutions with wide operating temperature range. In addition, the ADUM4121-1CRIZ incorporates overcurrent protection, which can act as crowbar to protect the device in case of short or overcurrent conditions.

The device operation is based on the principle of capacitive isolation. The primary section controls the open and close times of the secondary MOSFETs by using the integrated internal oscillator to generate pulse trains of specified properties. This ensures low power dissipation and a high level of noise immunity when compared to the traditional opto-isolator based solution. The main benefit of this approach is that it ensures the required protection for data transmission when using high voltage applications, without adding the cost associated with opto- isolation.

As the ADUM4121-1CRIZ is designed with a wide operating voltage range, it is suitable for use in a variety of power management applications, such as motor control and HMI integration with logic, control, and data conversion. Additionally, the programmable open-drain protection circuitry allows the design engineer to create cost-effective solutions for applications requiring superior performance over wide operating temperature ranges.

In terms of power management capabilities, the ADUM4121-1CRIZ is equipped with integrated overcurrent protection and active gate protection to ensure reliable operation of the MOSFETs and to reduce power consumption. Furthermore, the capacitive galvanic isolation up to 1,500 VRMS ensures robust and safe communication with various power source levels.

The ADUM4121-1CRIZ is a powerful half-bridge active gate driver designed to meet the latest safety standards for a wide range of motor control and HMI applications. With its wide operating voltage range, programmable open-drain protection capability and the integrated overcurrent protection, the device ensures reliable operation and superior performance over a wide temperature range. Additionally, the fitted capacitive galvanic isolation up to 1,500 VRMS provides robust and secure communication while protecting the device against noise injection into the power supply line.

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