To meet the driving requirements of solid-state switches with 2.5 J of energy and a voltage level of 2000 V, this paper designs a compact small-scale wire explosion pulsed power supply system. The system uses parallel low-inductance capacitors as the energy storage unit, precisely controlling the discharge timing through thyristors to convert low-level AC input into the required DC energy via boosting and rectifying modules, which is then released to generate high-voltage pulses across the small-scale wire load. Experimental results show that the pulsed power supply can generate a pulse current sufficient to rupture the wire on the metal load, with an output high-voltage pulse featuring a triggering delay < 20 μs and a voltage rise time < 2 μs—fully meeting the synchronization accuracy requirements for solid-state switch driving. Through modular compact design, the power supply achieves a 40% volume reduction, providing an efficient and reliable driving solution for high-voltage wide-bandgap solid-state switches in engineering applications such as pulsed power modulation and power electronics conversion.