IR2112

Gate Driver Overview

The IR2112 is a high and low side gate driver IC designed for driving IGBTs and MOSFETs. It features a 600 V voltage rating and supports a supply voltage range of 10 V to 20 V. The device provides an output source current of 0.25 A and a sink current of 0.5 A. Key timing parameters include a turn-off propagation delay of 105 ns and a turn-on propagation delay of 125 ns. Undervoltage lockout thresholds are set at 8.2 V for the off state and 8.6 V for the on state. The component utilizes junction isolation and is available in industrial quality grades.

Gate Driver Feature Summary

• Provides independent high-side and low-side channel control for power transistor switching applications.
• Integrates undervoltage lockout protection to ensure stable operation within specified supply limits.
• Supports bootstrap circuitry for floating high-side drive functionality up to 600 V.

Gate Driver Applications

• Motor control systems
• Power factor correction circuits
• DC-DC converters

Gate Driver Procurement Notes

Verify the specific package variant, such as PDIP or SOIC, when sourcing components. Confirm RoHS compliance status as some suffixes may differ. Check manufacturer lifecycle notices, as certain versions like the IR2112PBF may be marked as not recommended for new designs. Ensure the selected part matches the required thermal and electrical specifications for the target application environment.

Gate Driver Selection Notes

Select this driver for applications requiring robust high-voltage isolation and fast switching speeds. Consider the 600 V rating for half-bridge configurations. Evaluate the 0.25 A source and 0.5 A sink currents against the gate charge requirements of the target MOSFETs or IGBTs. Verify compatibility with standard control IC logic levels and ensure adequate decoupling for the floating high-side supply.

Gate Driver Part Context

The IR2112 belongs to the IR211x family of gate drivers from Infineon Technologies. It serves as a foundational component for medium-power switching applications. Variants such as the IR2112-1, IR2112-2, and IR2112S offer different packaging options while maintaining core electrical characteristics. This series is widely used in industrial motor drives and power supplies.

Gate Driver Replacement Considerations

Public confirmed substitute part numbers: IR2112-1, IR2112-2, IR2112S.