IRS21281SPBF

Gate Driver Overview

The IRS21281SPBF is a high-side gate driver IC from Infineon Technologies, housed in an 8-SOIC package. It operates with a supply voltage range of 9 V to 20 V and delivers a peak output current of 200 mA. The device features an inverting input logic compatible with CMOS and TTL standards. Key timing parameters include a maximum propagation delay of 200 ns, a rise time of 80 ns, and a fall time of 40 ns. It functions within a temperature range of -40°C to +125°C and has a power dissipation rating of 625 mW.

Gate Driver Feature Summary

• Provides high-side driving capability for power switches
• Features inverting input logic for control interface compatibility
• Supports wide operating temperature ranges for industrial applications

Gate Driver Applications

• Brushed DC motor control systems
• Solenoid driver circuits
• Lamp ballast drivers

Gate Driver Procurement Notes

Verify the specific suffix SPBF confirms the SOIC-8 surface mount package configuration. Confirm RoHS compliance status through official manufacturer documentation or authorized distributor declarations before procurement. Ensure the component source is traceable to Infineon Technologies to avoid counterfeit risks. Check for any obsolete or not recommended for new design (NRND) status updates in recent product lifecycle notices.

Gate Driver Selection Notes

Select this component when a single-channel high-side driver with inverting logic is required. It is suitable for applications needing moderate drive strength up to 200 mA. Consider the 8-SOIC package constraints for PCB layout. Verify that the input signal levels match the CMOS/TTL compatibility requirements. Evaluate thermal management needs given the 625 mW power dissipation limit in the chosen enclosure.

Gate Driver Part Context

This part belongs to the IR2128/IRS2128 family of gate drivers designed for driving N-channel power MOSFETs and IGBTs in high-side configurations. The 'IR' prefix typically denotes International Rectifier heritage, now part of Infineon. The 'S' indicates surface mount packaging, while 'PBF' signifies lead-free and halogen-free construction. This specific model integrates current sensing capabilities distinct from standard non-sensing variants.

Gate Driver Replacement Considerations

Direct pin-compatible alternatives may include other high-side drivers from the same family such as the IR2128 series, provided functional differences like current sensing are accounted for. Cross-referencing with equivalent parts from other manufacturers requires careful verification of voltage ratings, drive currents, and logical inversion properties.