Pulsed lasers serve as critical components across a diverse spectrum of modern
applications, ranging from precision manufacturing and medical equipment to
advanced defense systems. Their performance is fundamentally governed by the
pulsed power supplies that act as their energy source, where output
characteristics such as stability, rise time, and efficiency directly dictate
the quality and reliability of the laser output. Aligned with the prevailing
industrial trend towards miniaturization and digital control in semiconductor
laser pump drivers, this paper introduces a high-power,
high-repetition-frequency pulsed laser power supply. The proposed design is
architect ed around a phase-shifted full-bridge charging network for efficient
energy transfer and a modular, switched-mode constant-current pulsed discharge
network for precise output shaping. This integrated architecture provides
versatile and independent control over key output parameters, including current
amplitude, pulse width, and repetition frequency, offering significant
flexibility for various operational requirements. The adopted switched-mode
constant-current driving technique presents a substantial advantage over
conventional linear constant-current methods. It drastically reduces conduction
losses inherent in linear regulators, which is a decisive factor for enhancing
overall system efficiency, particularly in demanding long-pulse application
scenarios where thermal management is challenging. This work comprehensively
details the systematic modeling, in-depth analysis, and tailored control design
undertaken for both the front-end charging network and the rear-end
pulse-forming modules. To validate the design methodology and practical
performance, a functional prototype was developed and subjected to rigorous
testing. Experimental results confirm that the prototype achieves a maximum
constant-current pulsed output of 400 A, featuring a remarkably fast rise time
of less than 10 μs. Furthermore, it demonstrates a wide range
of operable pulse widths up to 1000 μs and sustains a maximum
repetition frequency of 1000 Hz, thereby meeting the stringent demands of
advanced high-power pulsed laser systems.