IR2108SPBF

Gate Driver Overview

The IR2108SPBF is a high-voltage, fast power MOSFET and IGBT driver IC manufactured by Infineon Technologies. It features a half-bridge topology with independent high-side and low-side outputs. The device supports supply voltages from 10 V to 20 V for both the logic (VCC) and bootstrap (VB) sections. Key electrical parameters include a peak output current of 200 mA, a maximum propagation delay of 300 ns, and rise/fall times of 220 ns and 80 ns respectively. It operates within a temperature range of -40°C to +125°C and is housed in an 8-SOIC surface-mount package.

Gate Driver Feature Summary

• Integrated high-side and low-side gate drivers for half-bridge configurations
• Built-in under-voltage lockout (UVLO) for both VCC and VB supplies
• CMOS/TTL compatible logic inputs for direct interfacing with control circuits
• Functional isolation between logic input and high-voltage output channels

Gate Driver Applications

• Motor drive systems
• Power supply applications
• Industrial inverters

Gate Driver Procurement Notes

Verify the specific suffix 'SPBF' corresponds to the SOIC-8 package and lead-free RoHS compliance status required for your assembly process. Confirm that the component is not marked as 'Not Recommended for New Designs' (NRND) or obsolete, as availability may be limited. Ensure the supplier provides valid traceability documentation for industrial grade components.

Gate Driver Selection Notes

Select this component when a compact half-bridge solution is needed for voltages up to 600 V. Consider the 200 mA output current capability against the gate charge requirements of the target MOSFETs or IGBTs. Evaluate the 300 ns propagation delay against switching frequency constraints. Compare against through-hole alternatives like IRS2108PBF if PCB layout allows for larger footprints.

Gate Driver Part Context

This part belongs to the IR2108 family of high-voltage gate drivers. It shares functional similarities with the PDIP-8 packaged IRS2108PBF but differs in mounting style and thermal characteristics. The SPBF suffix denotes the surface-mount SOIC-8 variant. It is distinct from single-channel drivers like the IR2128SPBF, offering integrated dual-channel control for complete half-bridge legs.

Gate Driver Replacement Considerations

The IRS2108PBF serves as a pin-compatible through-hole alternative within the same product family. Verify that the thermal dissipation capabilities of the SOIC-8 package meet the application's power loss requirements compared to the PDIP version.