The Need

Medium-voltage and high-voltage power electronics require robust isolation between control and power stages to ensure safe, reliable operation. Existing gate drive architectures typically rely on multiple isolated power supplies, signal isolation components, and communication channels, increasing system complexity, cost, footprint, and design challenges. As converter topologies become more advanced and switching speeds continue to increase, manufacturers need simpler, more scalable gate drive solutions that maintain high-performance isolation while reducing component count and implementation burden.

The Technology

OSU engineers have developed a novel optical gate drive architecture that enables isolated delivery of both operating power and control information through a highly streamlined system structure. The technology is designed to support multiple isolated gate drivers from a single optical source while preserving galvanic isolation and reliable switching control. The architecture is applicable to a wide range of power electronics building blocks and converter configurations, providing a flexible platform for next-generation power conversion systems.

Commercial Applications

• Medium-voltage and high-voltage power converters
• SiC and GaN power electronics platforms
• Renewable energy and grid-connected power systems
• Industrial drives, transportation electrification, and power modules

Benefits/Advantages

• Reduces the number of isolation components, interfaces, and optical channels required
• Supports multiple isolated gate drivers from a single optical source
• Simplifies gate drive system integration and system architecture