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AN3994 Datasheet(PDF) 14 Page - STMicroelectronics

Part # AN3994
Description  One of the bigger challenges
PDF  53 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

AN3994 Datasheet(HTML) 14 Page - STMicroelectronics

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MOSFET standard turn-on and turn-off analysis
AN3994
14/53
Doc ID 022380 Rev 1
This causes the lowering of the drain current down to zero. During this time interval, the gate
current is mainly coming from the Cgs capacitor.
IGoff current during this phase has the following expression:
Equation 11
During phase “4”, the Ciss fully discharges and the VGS reaches the zero value.
t>t‘3
iss
Gtot
'
3
'
4
'
3
C
R
t
t
Gtot
PL
)
t
,
t
(
Goff
e
R
V
)
t
(
I
−
−
=



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