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IR2118STR

IR2118STR Description

The IR2118STR from Infineon Technologies is a high-voltage, high-speed gate driver IC designed for single-channel, high-side switching applications. It operates within a supply voltage range of 10V to 20V and supports bootstrap operation up to 600V, making it suitable for driving MOSFETs and IGBTs in high-power circuits. The device features inverting logic inputs with thresholds of 6V (VIL) and 9.5V (VIH), ensuring reliable switching performance. With a peak output current capability of 250mA (source) and 500mA (sink), it efficiently drives capacitive loads while minimizing switching losses.

IR2118STR Features

• High-Side Voltage Capability: Supports 600V bootstrap operation, enabling robust high-voltage switching.
• Fast Switching Performance: 80ns rise time and 40ns fall time (typical) ensure efficient high-frequency operation.
• High Current Drive: 250mA source / 500mA sink current capacity for fast gate charging/discharging.
• Inverting Input Logic: Simplifies interfacing with control circuits while maintaining noise immunity.
• Surface-Mount Package: 8-pin SOIC (Tape & Reel) for compact PCB integration.
• Wide Supply Range: 10V–20V operation enhances flexibility in various power topologies.

IR2118STR Applications

The IR2118STR is ideal for:

• Switch-Mode Power Supplies (SMPS): High-efficiency power conversion in industrial and telecom systems.
• Motor Drives: Reliable high-side switching in BLDC and PMSM motor controllers.
• Inverters: Driving IGBTs/MOSFETs in solar inverters and UPS systems.
• Industrial Automation: High-voltage gate driving in PLCs and robotics.
• LED Drivers: Efficient power management in high-brightness lighting systems.

Conclusion of IR2118STR

The IR2118STR is a high-performance, single-channel gate driver optimized for high-voltage, high-speed switching applications. Its 600V bootstrap capability, fast switching times, and robust current drive make it a preferred choice for power electronics engineers. While obsolete, its design remains relevant for legacy systems requiring high-side switching efficiency and reliability. Ideal for motor drives, inverters, and industrial power systems, it balances performance with integration ease in surface-mount designs.