IRS2181PBF

Gate Driver Overview

The IRS2181PBF is a high-voltage, high-speed power MOSFET and IGBT driver manufactured by Infineon Technologies. It integrates a high-side and low-side driver in an 8-lead PDIP package. The device supports supply voltages from 10 V to 20 V with output currents of 1.9 A source and 2.3 A sink. Key electrical parameters include propagation delays of up to 180 ns (turn-on) and 220 ns (turn-off), rise/fall times of 60 ns/35 ns, and a maximum operating temperature of +125°C. It features functional junction isolation for voltage levels up to 600 V.

Gate Driver Feature Summary

• Integrates independent high-side and low-side drivers within a single monolithic package
• Provides galvanic isolation via junction isolation technology for high-voltage applications
• Supports CMOS and TTL logic input compatibility for direct interface with control circuits

Gate Driver Applications

• High-voltage motor control systems
• Industrial power supplies
• Inverter circuits for AC drives

Gate Driver Procurement Notes

Verify the current lifecycle status as the component is scheduled for obsolescence. Confirm that the 8-PDIP package meets mechanical requirements. Ensure the 600 V isolation rating aligns with system safety standards. Check for alternative sources due to potential discontinuation by the manufacturer.

Gate Driver Selection Notes

Select this driver for applications requiring robust high-side and low-side switching with moderate speed. The 600 V isolation capability suits industrial environments. Consider the end-of-life status when designing long-term production runs. Verify input logic levels match the controlling microcontroller or DSP outputs.

Gate Driver Part Context

The IRS2181PBF belongs to the IRS2181 family of half-bridge gate drivers. It is designed for driving power MOSFETs and IGBTs in high-voltage circuits. The PBF suffix indicates a lead-free, halogen-free package compliant with RoHS directives. It serves as a bridge between low-voltage logic and high-power switching stages.

Gate Driver Replacement Considerations

• IRS2181S

Gate Driver FAQ

What is the maximum voltage rating for the high-side driver?

The device supports voltage levels up to 600 V for the high-side floating channel.

Does the IRS2181PBF support negative gate bias?

Yes, the design allows for the generation of negative gate bias for MOSFETs and IGBTs using standard control ICs.