Isolated Gate Driver Timing Fundamentals

Isolated gate drivers are required anywhere level shifting, isolation, and gate drive strength are required. The isolation provided can be functional in nature, or can provide a safety barrier between two regions of different voltage potential. Isolated gate drivers find use in systems that often require tight timing and reproducible, reliable switching. This presentation covers details about the fundamental timing specifications found in most isolated gate driver datasheets, and provides methods and insight on how to properly use isolated gate drivers. The importance of different specifications are highlighted. Depending on the switch technology being driven, the important timing related specifications can change. Trade-offs between timing, robustness, efficiency, and cost are explored. Specific topics include propagation delay, propagation delay skew, drift, pulse width distortion, rise and fall times, setting deadtime, total system delay, and protection timing (reaction vs. reporting).
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Ryan Schnell 是 ADI 公司的应用工程师。他的工作涉及使用 iCoupler 技术来实现隔离的隔离式栅极驱动器,以及各种电源管理产品。他拥有科罗拉多大学电气工程学士和硕士学位,以及电源电子学博士学位。