Pulse Power Supply With Faster Response and Low Ripple Current Using Inductive Storage and Interleaving Technology

Abstract

Switched mode pulse power supply is a promising technique for high-power quasi-continuous laser driver. Contrast to lossy linear laser drivers, switched mode laser drivers can achieve higher efficiency. However, many challenges have been proposed, such as fast pulse edge, low current ripple. This paper proposes a multiphase interleaved pulse power supply with energy recovery and inductive storage (MIEF-PPS). The basic concept of the topology is the inclusion of a multiphase converter with pulse forming circuits to the converter system, which decouples the current slew rate and current ripple. Using an inductive storage technology and pulse forming circuits, a shorter pulse current rising time is obtained. The inductor energy is fed back to the input source not discharged to the load, resulting in a fast pulse trailing edge and energy saving. Thus the pulse current response observed when using this proposed technique is found to be much faster when compared to the conventional interleaved buck driver. Moreover, a pre-charge method is proposed to overcome the challenge of digitally controlling the inductive storage. The proposed topology was simulated in MATLAB/Simulink and validated against the experimental results of a laboratory prototype, 360 W dual-interleaved pulsed power supply. Index Terms-Energy recovery, fast response, multiphase interleaved, precharge control, pulse power supply. I. IntroductIonH IGH-POWER semiconductor laser arrays are vital in many fields, such as medical, industrial, and military fields, because of their advantages such as having a small volume, low weight, high efficiency, good beam quality, high reliability, and long lifespan [1]- [4]. A laser diode (LD) is a current-driven device and ha s similar characteristics to a lightemitting diode. From the voltage-current (V-I) characteristic and the characteristic curve of the optical power and injection current (P-I) of a laser diode [5], [6], it is sensitive to current

Research on efficiency optimization control technology for distributed interleaved parallel power supply systems

“…Power supply systems are essential for various applications, such as electric vehicles, renewable energy sources, and smart grids [1]. However, conventional power supply systems often suffer from low efficiency, poor reliability, and limited power density [2].…”