Open AccessDesign and Implementation of High Power Pulse Constant Current Source
Author(s) -
Weitong Miao,
Jun Huang,
Haitao Chen,
Yuchen Wang
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/632/4/042061
Subject(s) - output impedance , pulse width modulation , constant current , constant power circuit , electrical impedance , power (physics) , pulse (music) , current source , electrical engineering , amplitude , capacitance , high impedance , control theory (sociology) , voltage , materials science , switched mode power supply , computer science , physics , engineering , optics , quantum mechanics , control (management) , electrode , artificial intelligence
According to the requirement of the semiconductor laser for driving power supply, aiming at the problem of how to produce the current pulse with high amplitude, short pulse width and high stability on the low impedance load, a method of realizing the constant current output of the pulse by using the combination of the buck transform circuit and the linear regulation module is proposed. The Buck circuit is hysteresis controlled to control the storage capacitance voltage, and then the MOSFET working in the linear region is adjusted by the PI module to ensure constant current output on the load. The key factors affecting the output pulse amplitude, pulse width, front and back edge parameters are also analyzed and verified by experiments. The results of 170V DC power supply show that the circuit designed in this paper can output 30A, 250us pulse width and rise time less than 10us pulse constant current output on 5Ω low impedance load.