Power Over Fiber Based Gate Drive CircuitThe introduced power over fiber based gate drive circuit can be used drive semiconductor devices in a wide range of applications. The NeedRecently, interest in high-voltage (HV) Silicon Carbide (SiC) based semiconductor power devices and their applications has grown. Many HV SiC based semiconductor power devices have been developed to date. The gate drive circuit of HV SiC power devices is critical to ensure fast and reliable switching operation. The isolated power supply of a gate drive circuit must be able to sustain high isolation voltage and achieve high common-mode rejection, which is implemented with transformers that require a large magnetic core to separate the primary and the secondary windings and create sufficient creepage distance. This results in a large and heavy gate drive circuit. As an alternative solution for an isolated gate-drive power supply, wireless power transfer using separated coils has been studied. However, this solution is also sensitive to EMI, and it requires large space for isolation and shielding. Currently, there is a need for an isolated power supply of a gate drive circuit that can sustain high isolation voltage and achieve high common-mode rejection without the use of a large and heavy magnetic core. The TechnologyResearcher at The Ohio State University, led by Dr. Jin Wang, have developed an fiber optic based gate drive circuit that receives driving power and signals from optical receivers. The construction of this devices eliminates electrical connections between the laser transmitter and the gate drive circuits. The device has many benefits over traditional gate drive circuits for semiconductor devices. Commercial Applications
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Tech IDT2016-102 CollegeLicensing ManagerAshouripashaki, Mandana InventorsCategories(None) |