IR2121PBF

Gate Driver Overview

The IR2121PBF is a single low-side gate driver manufactured by Infineon Technologies, housed in an 8-pin PDIP package. It operates within a supply voltage range of 7 V to 23 V and supports CMOS and TTL logic inputs. The device delivers a peak output current of 1 A with rise and fall times of 60 ns and 35 ns, respectively. Propagation delays are limited to 150 ns for turn-on and 200 ns for turn-off. It functions across a temperature range of -40°C to +125°C with a power dissipation rating of 1 W.

Gate Driver Feature Summary

• Integrates programmable current limit functionality to protect connected power devices from overcurrent conditions.
• Includes dedicated shutdown and error reporting pins for enhanced system monitoring and fault management.

Gate Driver Applications

• Motor control systems requiring overcurrent protection
• Power supply circuits with fault reporting needs
• Industrial drive applications

Gate Driver Procurement Notes

Verify the component status as Not Recommended for New Designs (NRND) before finalizing procurement plans. Confirm that the PDIP-8 through-hole package aligns with existing PCB footprints. Ensure that the specific current limit programming requirements match the application design constraints. Check for RoHS compliance documentation if required by regulatory standards. Validate availability through authorized distributors due to potential end-of-life implications.

Gate Driver Selection Notes

Select this component when a single-channel low-side driver with integrated current limiting is required. It is suitable for applications needing explicit error signaling via the fault pin. Consider the 1 A output capability against load requirements. Evaluate the PDIP-8 package for manual assembly or prototyping needs. Compare propagation delay specifications against switching frequency demands.

Gate Driver Part Context

This part belongs to the IR2121 family of gate drivers, specifically designed for low-side switching applications. It distinguishes itself from standard drivers by incorporating programmable current limit and error pin features. The PDIP-8 variant provides a through-hole solution compatible with traditional manufacturing processes. It serves as a specialized alternative to basic drivers like the IR2101 when fault management is critical.

Gate Driver Replacement Considerations

• IR2121

Gate Driver FAQ

What is the function of the error pin?

The error pin reports fault conditions, such as overcurrent events triggered by the programmable current limit feature.

Is the IR2121PBF isolated?

No, the IR2121PBF is a non-isolated low-side gate driver.