This letter reports a monolithic high-efficiency buck converter using all depletion-mode (d-mode) gallium nitride (GaN) HEMTs which integrates a dead-time generating driving circuit and a power stage.

The three-level flying capacitor (3L-FC) submodule significantly reduces the magnitude of circulating currents, voltage ripple, and footprint size and improves the efficiency of the modular multilevel ...

By introducing Ta into SNN ceramics, superior energy storage properties and outstanding charge−discharge performance are achieved.