A Gate Driving Circuit Based on Single Pulse Transformer for the Input-Series Converters

In the input-series converters with active IVS capability, turning synchronization of the switches is required to suppress input voltage difference among the series-modules. Aiming at these input-series converters, a gate driving circuit based on single pulse transformer is proposed and implemented in this paper. In the proposed driving circuit, a single pulse transformer with one primary winding and multiple identical secondary windings is adopted. With the help of coupling of its secondary windings, a good uniformity of the driving signals has been achieved, so turning synchronization of the switches in various series-modules can be ensured. The experiment results obtained from a laboratory-made input-series multiple-output forward converter verify the feasibility of the proposed method.