Infineon AUIRS2124STR: Powering Advanced Motor Control and Switch-Mode Power Supplies

The Infineon AUIRS2124STR is a high-performance, 600V high- and low-side driver IC engineered to deliver robust and efficient control for MOSFETs and IGBTs in demanding power electronics applications. As a critical component in half-bridge and full-bridge topologies, this driver integrates sophisticated functionality to simplify design, enhance system reliability, and optimize performance.

A key feature of the AUIRS2124STR is its high noise immunity and robust operational integrity. Operating with a voltage rating of up to 600V, it is designed to withstand the voltage spikes and transient noise commonly found in harsh industrial environments, such as in motor drives and appliance control. The driver incorporates advanced level-shift technology, which allows the high-side channel to operate floating at high voltages, reliably translating the input logic signal from the low-side controller to the high-side switch.

The IC is equipped with a built-in dead-time generation feature, which is crucial for preventing shoot-through currents. Shoot-through occurs when both the high-side and low-side switches in a half-bridge are conducting simultaneously, leading to catastrophic failure and efficiency loss. By intelligently inserting a mandatory off-time between the turn-off of one switch and the turn-on of its complement, the AUIRS2124STR safeguards the power switches, enhancing system durability and safety.

Furthermore, the driver offers a high output current capability of typically 290mA source and 600mA sink. This strong drive strength ensures swift switching of the power transistors, minimizing transition times and associated switching losses. This is paramount for achieving high efficiency, particularly in high-frequency switch-mode power supplies (SMPS) and motor control systems where every watt saved translates to better thermal performance and lower operational costs.

The integration of under-voltage lockout (UVLO) protection for both the high-side and low-side channels ensures that the outputs remain low if the supply voltage is insufficient for proper operation. This protective measure prevents the power switches from operating in a linear region, which could lead to excessive power dissipation and potential device failure.

Housed in a compact SO-8 package, the AUIRS2124STR provides a high level of integration in a small footprint, making it an ideal choice for space-constrained applications. Its combination of high voltage capability, integrated protection features, and strong drive current makes it a cornerstone for designers building reliable and efficient three-phase motor drives, industrial inverters, and high-power AC-DC converters.

ICGOO FIND: The Infineon AUIRS2124STR stands out as a highly integrated and robust solution for high-voltage bridge configurations, offering essential protection features, strong drive current, and exceptional noise immunity to ensure reliable and efficient power system design.

Keywords: High- and Low-Side Driver, 600V Rating, Dead-Time Generation, Under-Voltage Lockout (UVLO), Shoot-Through Protection.