This paper presents the design of a 300-Watt isolated power supply for MOS gate driver circuit in medium and high voltage applications. The key feature of the developed power supply is having a very low circuit input-to-output parasitic capacitance, thus maximizing its noise immunity. This makes it suitable for modular stacking applications. The converter is a voltage-controlled current source, utilizing a transformer that has an extremely low inter-winding parasitic capacitance. The experiments show that an overall circuit input-to-output parasitic capacitance of 10 pF can be achieved. Design analysis and experimental results are provided to prove the feasibility of the converter.
Proceedings of the 7th Iet International Conference on Power Electronics, Machines and Drives Pemd 2014, 2014
Current transformers; Parasitic capacitance; Switching converters; Stacking; dc-dc power converters
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7th IET international conference on Power Electronics, Machines and Drives, 2014