Electronics-I Lecture 37

Electronics-I Lecture 37 - PchannelMOSFET Lecture 37...

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Lecture 37 Electronics I 1 P-channel MOSFET
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Lecture 37 Electronics I 2 P-channel MOSFET To operate in the Triode region A channel must be induced v GS    v t v SG    |v t | v is negative Channel should remain continuous  v DS    v GS  – v t    drain voltage must be higher than the gate voltage  by |v t |   - - = 2 DS DS t GS ' p D v 2 1 v ) V v ( L W k i
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Lecture 37 Electronics I 3 P-channel MOSFET To operate in the Saturation region A channel must be induced v GS    v t v SG    |v t | v is negative Channel must be pinched off v DS    v GS  – v t    drain voltage must be lower than the gate voltage  by |v t |   ) v 1 ( ) V v ( L W k 2 1 i DS 2 t GS ' p D λ + - =
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Lecture 37 Electronics I 4 Relative levels of Terminal  Voltages (PMOS)
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Electronics I 5 The Body Effect In many applications  the S and the B 
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Electronics-I Lecture 37 - PchannelMOSFET Lecture 37...

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