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Product Attributes

Introduction

UCC21750 is a galvanically isolated single-channel gate driver designed for SiC MOSFETs and IGBTs operating at DC voltages up to 2121V, featuring advanced protection, excellent dynamic performance, and robustness. The UCC21750 offers peak source and sink currents of up to ±10A. The input side is isolated from the output side via SiO₂ capacitive isolation technology, supporting working voltages up to 1.5kVRMS, surge immunity of 12.8kVₚₖ, an isolation barrier lifetime of over 40 years, low device-to-device offset, and CMTI greater than 150V/ns. The UCC21750 includes advanced protection features such as fast overcurrent and short-circuit detection, shunt current sensing support, fault reporting, active Miller clamp, and input/output-side supply UVLO (for optimized SiC and IGBT switching behavior and robustness). An isolated analog-to-PWM sensor enables easier temperature or voltage sensing, further enhancing driver versatility while simplifying system design effort, size, and cost.

Features

• 5.7kV RMS single-channel isolated gate driver for SiC MOSFET and IGBT up to 2121Vₚₖ
• 33V maximum output drive voltage (VDD – VEE)
• ±10A drive strength with split outputs
• 150V/ns minimum CMTI
• DESAT protection with 200ns fast response time
• 4A internal active Miller clamp
• 400mA soft turn-off during fault
• Isolated analog sensor with PWM output
• Temperature sensing using NTC, PTC, or thermistor diode
• High-voltage DC link or phase voltage overcurrent alarm FLT and reset via RST/EN
• Fast enable and disable response for RST/EN
• <40ns noise transient and pulse rejection on input pins
• 12V VDD UVLO on RDY (with power-good indication)
• Input/output with up to 5V overshoot/undershoot transient voltage immunity
• 130ns (max) propagation delay and 30ns (max) pulse/device-to-device skew
• SOIC-16 DW package with creepage and clearance > 8mm
• Operating junction temperature range: -40°C to +150°C
• Safety-related certifications:
• Reinforced insulation per DIN EN IEC 60747-17 (VDE 0884-17)
• UL 1577 component recognition program

Applications

• Industrial motor drives
• Server, telecom, and industrial power supplies
• Uninterruptible power supplies (UPS)
• Photovoltaic inverters