Vertical Mosfet
N-channel enhancement mode vertical dmos fet. Lead Free Status / RoHS Status. Lead free / RoHS Compliant. N-CHANNEL ENHANCEMENT MODE LOW THRESHOLD VERTICAL DMOS FET. N-CHANNEL ENHANCEMENT MODE VERTICAL DMOS FET. Ssd for mac retina. Power MOSFET เป็น MOSFET ชนิดหนึ่งซึ่งมีความหมายเป็นพิเศษเพื่อจัดการพลังงานระดับสูง เหล่านี้มีความเร็วในการสลับสูงและสามารถทำงานได้ดีกว่ามากเมื่อเทียบกับ MOSFET ทั่วไปอื่น ๆ ใน. Quite the same Wikipedia.
Trench MOSFET basics | What is Trench MOSFET
This page covers Trench MOSFET basics and mentions Trench MOSFET construction. The links to MOSFET and comparison between MOSFET and other transistor types are also mentioned.
The device trench gate MOSFET has lowest ON state resistance among all the variants of MOS devices.Hence it is considered as most suitable power device for low to medium voltage power applications.
The architecture is designed such that it conducts the current vertically from one surface to the othersurface. Due to this the trench MOSFET achieves high drive capability.It is realized by packing millions of trenches on a chip, deepenough to cross the oppositely doped 'body' region below the top surface. Eachtrench houses a gate dielectric and gate electrode to control the current conductionin its vicinity by the virtue of field effect.
Trench MOSFET Construction
Similar to any other MOSFET, a trench MOSFET cell contains the drain, gate, source, body andthe channel regions but exhibits a vertical direction of current flow. All the cellsare connected to work in parallel in order to reduce the value of RON.Figure depicts basic device structure for trench MOSFET.Trench MOSFETs are mainly used for less than 200 voltage rating due totheir higher channel density and thus lower on-resistance.
The amount of current trench MOSFET conducts depends on the on-resistance of the MOSFET which is expressed asfollows.
RDSON = VD/ID
For a trench MOSFET, RDSON consists of the following components which is depictedin the figure-2:
• RS: source resistance
• RCH: channel resistance
• RACC: resistance from the accumulation region
• REPI: resistance from the top layer of silicon(epitaxial silicon, also known as epi); epi controls the amount of blocking voltage the MOSFET can sustain.
• RSUBS: resistance from the silicon substrate on which the epi is grown
MOSFET and BJT related links
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How Does A Mosfet Work
Большой англо-русский и русско-английский словарь. 2001.
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