How to use MOSFET. Design note 2


MOSFET
MOSFET is Metal Oxide Semi conductor Field Effect Transistor, a very efficient type of switching transistor used in power devices like Inverters, UPS, Power amplifier etc. Its high current capability and fast switching makes it as an ideal choice for these applications. MOSFET is a four terminal device. The terminals are Drain, Source, Gate and the Substrate or Body terminal. The Drain and Source terminals are connected to the heavily doped regions. The Gate terminal is connected top on the oxide layer while the Substrate terminal is connected to the intrinsic semi conductor.
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Familiarize Electronic Component Part V – FET and MOSFET


Field Effect Transistor or FET uses an electric field to make it conducting. The electric field changes the shape of its channel and causes its conductivity. MOSFET is the Metal Oxide Semiconductor Field Effect Transistor used for switching applications or to amplify signals. MOSFET is more sensitive and sophisticated than FET.

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Flash Memory


Today Flash memory is everywhere in Pen drives, Digital camera, MP3 players and in almost all portable electronic devices. Flash memory is a Non volatile Erasable memory device that can be reprogrammed. Dr.Fujio Masuoka of Toshiba introduced the Flash memory in 1984 to the world.


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Trench MOSFET


Trench MOSFET technology is the newly introduced MOSFET technology in which the gate electrode of the MOSFET is buried in trench etched in Silicon to get a vertical structure to enhance the channel density. The MOSFET using the trench gate is called TrenchMOS or UMOS (since the trench is U shaped).The main feature of TrenchMOS is that it lacks the JFET effect.

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Power MOSFET


MOSFET is the Metal Oxide Semiconductor Field Effect Transistor used for switching applications or to amplify signals. In the MOSFET, a voltage applied to its oxide- insulated gate to induces a conducting channel between the Source and Drain electrodes. This causes the flow of current. The channel may be n-type or p-type and based on this, MOSFETs may be n-MOSFET or p-MOSFET. Previously, metal was used in the gate but now polysilicon is used in the gate but the efficiency is more in metal made gate channel.

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Flash Memory


Today Flash memory is everywhere in Pen drives, Digital camera, MP3 players and in almost all portable electronic devices. Flash memory is a Non volatile Erasable memory device that can be reprogrammed. Dr.Fujio Masuoka of Toshiba introduced the Flash memory in 1984 to the world.


Continue reading