Single channel isolated gate driver with high-CMTI
The UCC21750 from Texas Instruments is a galvanic isolated single channel gate drivers designed for up to 1,700V SiC MOSFETs and IGBTs with advanced protection features, dynamic performance and robustness. UCC21750 has up to ±10-A peak source and sink current.
The input side is isolated from the output side with SiO2 capacitive isolation technology, supporting up to 1.5-kVRMS working voltage, 12.8-kVPK surge immunity with longer than 40 years Isolation barrier life, as well as providing low part-to-part skew, >150V/ns common mode noise immunity (CMTI).
The UCC21750 includes the state-of-art protection features, such as fast overcurrent and short circuit detection, shunt current sensing support, fault reporting, active miller clamp, input and output side power supply UVLO to optimise SiC and IGBT switching behaviour and robustness. The isolated analog to PWM sensor can be utilised for easier temperature or voltage sensing, further increasing the drivers’ versatility and simplifying the system design effort, size and cost.
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