Infineon IRS2113STRPBF: High- and Low-Side Driver IC with Independent CMOS and LSTTL Inputs

In the realm of power electronics, the efficient and reliable driving of high-voltage power MOSFETs and IGBTs is a fundamental requirement. The Infineon IRS2113STRPBF stands out as a specialized high-voltage, high-speed power driver designed to control both the high-side and low-side switches in half-bridge configurations. Its architecture is engineered to deliver robust performance in demanding applications such as motor drives, switch-mode power supplies (SMPS), and inverters.

A defining feature of the IRS2113STRPBF is its independent CMOS and LSTTL input stages. This design provides exceptional flexibility for system designers, allowing the driver to be interfaced directly with a wide range of control logic from both microcontrollers (CMOS levels) and older-generation logic circuits (LSTTL levels) without requiring additional level-shifting components. This compatibility simplifies circuit design and enhances overall system reliability.

The driver integrates a floating channel for the high-side drive, which is capable of operating with bootstrap or isolated bias supplies. This allows it to handle high-side voltages of up to 600 volts, making it suitable for high-power circuits. The device incorporates a advanced dead-time control logic to prevent shoot-through currents, a critical failure mode in bridge circuits where both the high-side and low-side switches could be on simultaneously, causing a short circuit. This built-in protection is vital for system durability.

Furthermore, the IRS2113STRPBF is designed for high-speed operation. With typical propagation delays matched between both channels, it ensures precise switching of the power devices, which is crucial for maintaining efficiency, especially in high-frequency PWM (Pulse Width Modulation) applications. The driver's output stages are capable of sourcing and sinking relatively high peak currents, enabling fast turn-on and turn-off times for the connected power switches and minimizing switching losses.

ICGOODFIND: The Infineon IRS2113STRPBF is a highly versatile and robust high- and low-side driver IC. Its key strengths lie in its wide input logic compatibility, high-voltage operational capability, and integrated protection features like matched propagation delays and shoot-through prevention, making it an excellent choice for a broad spectrum of power conversion applications.

Keywords: Half-Bridge Driver, High-Voltage Operation, CMOS/LSTTL Inputs, Dead-Time Control, Bootstrap Circuitry.