Analytical modeling demonstrates accurate switching oscillation predictions in dual-buck converters, highlighting mechanisms to mitigate high-frequency transient noise.
Key Points
To develop a circuit-level hybrid multimode analytical model that accurately predicts complex switching waveforms and transient oscillations in GaN HEMT-based dual-buck symmetrical half-bridge converters.
Incorporated nonlinear device parasitics and printed circuit board (PCB) stray effects into turn-on and turn-off equivalent circuit formulations.
Established mode-transition boundaries driven by multiloop current cross-conduction to resolve interleaved bias, output, and stray loop coupling.
Validated analytical waveform predictions against PSPICE simulations and physical hardware experiments.
Successfully predicted turn-on and turn-off transient waveforms within a single switching cycle across various operating conditions.
Uncovered the precise mechanisms by which variations in stray PCB and device parasitic parameters amplify high-frequency switching noise.