Muhammad Owais
New Member
i want to use mosfet as a switch then in which mode i operate it linear or saturation........!!!
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Description
The IR2110/IR2113 are high voltage, high speed power MOSFET and
IGBT drivers with independent high and low side referenced output channels.
Proprietary HVIC and latch immune CMOS technologies enable
ruggedized monolithic construction. Logic inputs are compatible with
standard CMOS or LSTTL output, down to 3.3V logic. The output
drivers feature a high pulse current buffer stage designed for minimum
driver cross-conduction. Propagation delays are matched to simplify use in high frequency applications. The
floating channel can be used to drive an N-channel power MOSFET or IGBT in the high side configuration which
operates up to 500 or 600 volts.
Here we go again. This question comes up from time to time, mosfet as switch saturation/linear. And confuses me and others. Guru says switch = linear. Rumpfy and reloadron say switch = saturated. From the little I know, I'd say Guru is correct, mosfet as switch = linear region. Anyone else want to chime in?
i want to use mosfet as a switch then in which mode i operate it linear or saturation........!!!
If you read a detailed description of a Mosfet then its Saturation and Linear modes are the opposite of a bipolar transistor.
A bipolar transistor is Saturated when it is turned on like a switch, a Mosfet is Linear when it is turned on like a switch.
A bipolar transistor is Linear when it is partially turned on and is amplifying, a Mosfet is Saturated when it is partially turned on and is amplifying.
To turn on a Mosfet like a switch then its gate to source voltage must be as high as is shown in its datasheet. Most Mosfets need 10V to completely turn on but Mosfets called "logic Level" need only 4.5V.
Because the modes of a Mosfet are confusing then I never say it is saturated or is linear. Instead I say it is amplifying or it is switched on.