Abstract: A low-carbon and low-alloy dual-phase steel and hot-dip galvanized dual-phase steel having tensile strength greater than or equal to 980 MPa and a method for manufacturing by means of rapid heat treatment. The steel has the following chemical components in percentage by mass: C: 0.05-0.17%, Si: 0.1-0.7%, Mn: 1.4-2.8%, P?0.020%, S?0.005%, B?0.005%, and Al: 0.02-0.055%, and may further contain two or more of Nb, Ti, Cr, Mo, and V, Cr+Mo+Ti+Nb+V?1.1%, the balance is Fe and other inevitable impurities. The method for manufacturing the steel comprises: smelting, casting, hot rolling, cold rolling and rapid heat treatment procedures. According to the present invention, the recovery, recrystallization and austenite transformation process of a deformed structure is changed, the nucleation rate is increased, the grain growth time is shortened, grains are refined, the strength of the material is improved, and the performance range of the material is expanded.

Abstract: A high-formability hot galvanized aluminum-zinc or hot galvanized aluminum-magnesium dual-phase steel having a tensile strength of ?590 MPa and a rapid heat treatment hot dipping fabrication method, the steel comprising the following components in mass percentage: C: 0.045-0.12%; Si: 0.1-0.5%; Mn: 1.0-2.0%; P: ?0.02%; S: ?0.006%; and Al: 0.02-0.055%. The steel may also contain one or two among Cr, Mo, Ti, Nb, and V, wherein the Cr+Mo+Ti+Nb+V?0.5%, and the remainder is Fe and other inevitable impurities. The present invention changes the recovery of a deformed structure, ferrite recrystallization and austenite transformation processes during annealing by means of rapid heat treatment, and the nucleation point of a crystal is increased, grain growth time is shortened, the strength and formability (n90 value) of the material is improved while heat treatment efficiency is improved, which thus extends the performance range of the material.

Abstract: A multiphase converter for reducing the input and output current ripples. The multiphase converter includes a system controller and power devices. Furthermore, the multiphase converter includes an active gate driver integrated circuit (IC) electrically connected to the system controller and the power devices. The active gate driver IC receives signals from the system controller and provides outputs to the power devices based, at least in part, on real-time feedback from the power devices.