Overview:
How the existing IGBT technology level can maximize its function is a major and critical issue. This article takes eupec's IGBT model FF450R17ME3 as an example to illustrate its high integration, high reliability and high efficiency.
1 Introduction
IGBT (Insulated Gate Bipolar Transistor), insulated gate bipolar power tube, is a composite full-controlled voltage-driven power electronic device composed of BJT (bipolar transistor) and MOS (insulated gate field effect transistor). The advantages of both the high input impedance of the MOSFET and the low turn-on voltage drop of the GTR. The GTR saturation voltage is reduced, the current carrying density is large, but the driving current is large; the MOSFET driving power is small, the switching speed is fast, but the conduction voltage drop is large, and the current carrying density is small. IGBT combines the advantages of the above two devices, with low drive power and reduced saturation voltage, making it the device of choice for today's power electronics industry.
The development level of power electronic devices largely determines the development level of power electronic products. At present, the limitation of voltage and current levels of power electronic devices has become a bottleneck in the development of power electronics and electric drive industry, and IGBT is one of them. How to maximize its function at the existing IGBT technology level is a major and critical issue. In addition to reasonable software control methods, the IGBT drive protection circuit is another important link. At present, there are many control and protection circuits for IGBTs, but they are not perfect in terms of integration and reliability. This paper introduces an IGBT drive protection circuit based on CONCEPT's 2SD315 module based on the basic performance of IGBT.
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Harsh Environment Membrane Switch
here are several elements and environmental conditions that can cause potential problems for Membrane Switch technologies, including:
Outdoor exposure to sunlight and UV rays
Exposure to harsh chemicals and/or solvents
Operator (mechanical) abuse
Dust and debris, often a problem for devices used outdoors
Extreme humidity
Extreme temperatures, both hot and cold
Atmospheric pressure at high altitudes
Moisture ingress
For this reason it is essential that your membrane switch supplier offer creative solutions to these challenges, both through unique switching technologies such as:
Dynapic Piezoelectric keypads and
DuraSwitch PushGate products.
Much of the process in designing membrane switch technologies for harsh environments involves selecting the appropriate materials and components to provide the protection necessary to ensure the integrity of each component within the membrane switch assembly.
The key considerations are choosing durable materials for the graphic overlay and selecting pressure-sensitive adhesives with the ability to withstand potential contaminants and other elements that could impact performance. A special adhesive sealing process can also be used to create an impervious bond that`s unaffected by the harsh conditions that would ordinarily cause device failure.
There are a range of options when it comes to durable materials and components capable of standing up in harsh, abusive, or rugged environments.
Harsh Environment Membrane Switch,Short Cable Membrane Switch,Heat-Resistant Membrane Switch,Round Button Membrane Keypad
Dongguan Nanhuang Industry Co., Ltd , https://www.soushine-nanhuang.com