Infineon Technologies

IR4428STR  

Gate Drivers ICs

IR4428STR Description

The IR4428STR from Infineon Technologies is a low-side gate driver IC designed for high-performance switching applications. Housed in an 8-pin SOIC package with surface-mount compatibility, it features dual independent drivers capable of delivering peak output currents of 2.3A (source) and 3.3A (sink). Operating within a 6V to 20V supply range, it ensures robust gate drive for power MOSFETs and IGBTs. With fast switching characteristics (15ns rise, 10ns fall times) and compatibility with logic-level inputs (VIL=0.8V, VIH=2.7V), it is optimized for efficiency in high-frequency circuits. Though marked obsolete, it remains relevant for legacy designs requiring reliable, high-current gate driving.

IR4428STR Features

• Dual Independent Channels: Enables simultaneous control of two separate loads.
• High Peak Current: 2.3A source / 3.3A sink for rapid switching of power devices.
• Wide Supply Range: 6V–20V accommodates diverse bus voltages.
• Fast Switching: 15ns rise and 10ns fall times minimize switching losses.
• Logic-Level Inputs: Compatible with 3.3V/5V microcontrollers (VIL=0.8V, VIH=2.7V).
• Surface-Mount Package: 8-SOIC (Tape & Reel) for automated assembly.
• Robust Compliance: REACH unaffected, ECCN EAR99, MSL1 (unlimited shelf life).

IR4428STR Applications

Ideal for:

• Motor Drives: Precise control of low-side MOSFETs in brushed DC or stepper systems.
• Switch-Mode Power Supplies (SMPS): Enhances efficiency in buck/boost converters.
• Inverters: Drives IGBTs in solar or UPS inverters with fast switching.
• Industrial Automation: Relays, solenoids, and inductive load switching.
• Legacy System Upgrades: Replacing older gate drivers without PCB redesign.

Conclusion of IR4428STR

The IR4428STR excels in high-current, fast-switching applications, offering dual-channel flexibility and wide voltage compatibility. While obsolete, its performance metrics (e.g., 3.3A sink current, 10ns fall time) make it a pragmatic choice for legacy or cost-sensitive designs. Engineers valuing reliability and ease of integration in motor control, SMPS, or industrial systems may still find it advantageous despite newer alternatives.

IR4428STR Documents

Download datasheets and manufacturer documentation for IR4428STR

Datasheets :

IR4426-28 (S) (PbF)      

Other Related Documents :

Part Number Guide      

HTML Datasheet :

IR4426-28 (S) (PbF)