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IR21084SPBF

IR21084SPBF Description

The IR21084SPBF from Infineon Technologies is a high-voltage, high-speed half-bridge gate driver IC designed for power MOSFET and IGBT control in demanding applications. Housed in a 14-SOIC package, this surface-mount device operates within a 10V to 20V supply range, delivering robust performance with 600V maximum bootstrap voltage capability. It features two independent drivers with 200mA source and 350mA sink peak current outputs, ensuring efficient switching of power semiconductors. The device is ROHS3 compliant and adheres to REACH environmental standards, though it is marked as obsolete, meaning it may be phased out for newer alternatives.

IR21084SPBF Features

• High-Speed Switching: Optimized rise/fall times (150ns and 50ns typ.) minimize switching losses.
• Wide Voltage Range: Supports 10V–20V logic voltage with 0.8V (VIL) and 2.9V (VIH) thresholds for compatibility with TTL/CMOS inputs.
• Robust Output: 200mA source / 350mA sink current ensures strong gate drive for fast transitions.
• High Voltage Tolerance: 600V bootstrap voltage enables use in high-side configurations.
• Independent Channels: Flexible control for half-bridge or independent low-side applications.
• Reliability: MSL 3 (168 hours) moisture sensitivity and EAR99/ECCN compliance for industrial use.

IR21084SPBF Applications

This gate driver is ideal for:

• Motor Drives: Efficient control of brushed/brushless DC motors in industrial systems.
• Switched-Mode Power Supplies (SMPS): High-frequency switching in AC/DC or DC/DC converters.
• Inverters: Solar microinverters or UPS systems requiring high-voltage isolation.
• Half-Bridge Topologies: Driving MOSFET/IGBT pairs in H-bridge configurations for robotics or automotive applications.

Conclusion of IR21084SPBF

The IR21084SPBF excels in high-voltage, high-speed gate driving with its independent channels, robust current output, and wide supply range. While obsolete, its 600V bootstrap capability and fast switching make it suitable for legacy designs in motor control, power conversion, and inverter systems. Engineers should evaluate newer alternatives for future-proofing but may still leverage this IC’s reliability in existing applications.