Infineon AUIRS2336STR 1200V 3-Phase Gate Driver IC: Features and Applications

The Infineon AUIRS2336STR is a high-voltage, high-performance three-phase gate driver IC specifically engineered for advanced power conversion and motor control applications. Designed to drive both IGBTs and MOSFETs in demanding environments, it integrates critical protection features and robust performance characteristics, making it a cornerstone component in modern industrial and automotive systems.

A primary feature of this driver IC is its high-voltage rating of 1200V, which provides ample headroom for driving power switches in circuits operating from standard three-phase mains voltages up to 600V AC. This makes it exceptionally suitable for industrial motor drives, HVAC systems, and heavy-duty inverters. The device incorporates three independent half-bridge driver channels, each capable of sourcing and sinking high peak output currents, essential for fast switching of modern power transistors and minimizing switching losses.

Comprehensive protection and operational safety are central to its design. The AUIRS2336STR features advanced under-voltage lockout (UVLO) protection for all channels, safeguarding the power switches by preventing operation with insufficient gate voltage. Crucially, it includes a fault reporting function that provides a feedback signal to the controller in the event of a fault condition, such as an over-current event detected by an external shunt resistor. This enables immediate system shutdown, protecting the entire power stage from catastrophic failure.

The integration of a programmable dead time function prevents shoot-through currents in the half-bridge configuration, a common cause of inverter failure. This built-in feature enhances system reliability by ensuring that the high-side and low-side switches of a phase leg are never conducting simultaneously. Furthermore, its 3.3V/5V compatible logic inputs allow for direct interfacing with a wide range of microcontrollers and DSPs, simplifying system design and reducing component count.

Focused on noise immunity in harsh electrical environments, the IC is built with robust level-shift technology for the high-side drivers. This ensures clean and stable operation despite the presence of high dv/dt noise, which is typical in switching power circuits.

Key application areas for the AUIRS2336STR include:

Industrial Motor Drives: Controlling AC induction, BLDC, and PMSM motors in factory automation, pumps, and compressors.

Renewable Energy Systems: Serving as the core driver in solar inverters and other power conversion stages.

Appliances: Enabling efficient control in high-end washing machines, refrigerators, and air conditioners.

Electric and Hybrid-Electric Vehicle (EV/HEV) Systems: Used in auxiliary motor drives and battery management systems.

ICGOOODFIND: The Infineon AUIRS2336STR stands out as a highly integrated and protected solution for high-power three-phase inverter designs, offering designers a reliable and efficient path to market for robust motor control and power conversion systems.

Keywords: Three-Phase Gate Driver, 1200V Rating, Under-Voltage Lockout (UVLO), Fault Reporting, Motor Control.