Recently, our company (hereinafter referred to as "Jian Semiconductor") has received great news. Following the completion of the PreA round of financing in December 2021, it has recently completed tens of millions of A round of financing. This round of financing was funded by Shandong Yida Venture Capital Fund Partnership. (Limited Partnership) (referred to as "Yida Capital") is an exclusive investment, and the financing funds will be mainly used to accelerate the research and development of power semiconductor chips, accelerate the construction of production lines and the formation of talent teams.
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Recently, our company (hereinafter referred to as "Jian Semiconductor") has received great news. Following the completion of the PreA round of financing in December 2021, it has recently completed tens of millions of A round of financing. This round of financing was funded by Shandong Yida Venture Capital Fund Partnership. (Limited Partnership) (referred to as "Yida Capital") is an exclusive investment, and the financing funds will be mainly used to accelerate the research and development of power semiconductor chips, accelerate the construction of production lines and the formation of talent teams.
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There are roughly ten semiconductor equipments required to make a silicon wafer, they are single crystal furnace, vapor phase epitaxy furnace, oxidation furnace, magnetron sputtering table, chemical mechanical polishing machine, lithography machine, ion implanter, wire bond machine, wafer dicing machine, wafer thinning machine.
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The photovoltaic inverter is a very important device in the photovoltaic system. Its main function is to convert the direct current from photovoltaic modules into alternating current. In addition, the inverter is also responsible for detecting the operating status of components, power grids, and cables, and communicating with the outside world. , system security housekeeper and other important functions. It takes more than two years to produce a brand-new inverter, and a lot of manpower and material resources need to be invested in R&D and testing in the early stage.
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The switching process of the IGBT is mainly controlled by the gate voltage VGE. Since there is a parasitic capacitance between the gate and the emitter, the turn-on and turn-off of the IGBT is equivalent to charging and discharging the CGE. It is assumed that the initial state of the IGBT is an off state, that is, VGE is a negative pressure VGC-, and the output of the latter stage is a resistive inductive load with a freewheeling diode. So how much do you know about the definition of IGBT switching time? details as follows.
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Capacitance is a physical quantity that characterizes the ability of a capacitor to hold charge. The amount of electricity required to increase the potential difference between the two plates of a capacitor by 1 volt is called the capacitance of the capacitor. The symbol for capacitance is C. Capacitors are one of the most widely used electronic components in electronic equipment, and are widely used in DC blocking, coupling, bypassing, filtering, tuning circuits, energy conversion, control circuits, etc. Use C to represent the capacitance, and the capacitance units are farad (F), microfarad (uF), picofarad (pF), 1F=10*6uF=10*12pF
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