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STTA512FP Arkusz danych(PDF) 7 Page - STMicroelectronics

Numer części STTA512FP
Szczegółowy opis  TURBOSWITCH ULTRA-FAST HIGH VOLTAGE DIODE
PDF  10 Pages
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Producent  STMICROELECTRONICS [STMicroelectronics]
Strona internetowa  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STTA512FP Arkusz danych(HTML) 7 Page - STMicroelectronics

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STTA512D/F/B/FP
7/10
Turn-on losses :
(in the transistor, due to the diode)
P5 =
VI
S
F
xdI
dt
R
RM
F
××
+
×
×
2
32
6
()
+
×
×
×+×
VI
I
S
F
xdI
dt
RRM
L
F
()
2
2
Turn-off losses (in the diode) :
P3 =
VI
S
F
xdI
dt
R
RM
F
××
×
2
6
Turn-off losses :
(with non negligible serial inductance)
P3’ =
VI
S
F
xdI
dt
R
RM
F
××
×
+
2
6
LI
F
RM
××
2
2
P3,P3’ and P5 are suitable for power MOSFET
and IGBT
Fig. F: TURN-OFF CHARACTERISTICS
I F
V F
V Fp
1.1V F
V F
F
dI /dt
0
0t
t
I Fmax
tfr
Fig. G: TURN-ON CHARACTERISTICS
Turn-on losses :
P4 = 0.4 (VFP -VF).IFmax .tfr .F
APPLICATION DATA (Cont’d)
dI
F /dt = VR /L
dI /dt
R
tb
ta
I
RM
V
R
I
V
t
S= tb/ta
trr = ta + tb
RECTIFIER
OPERATION
V
I
IL
t
TRANSISTOR
dI /dt
F
dI /dt
R
tb
ta
I RM
VR
DIODE
I
V
t
trr = ta + tb
S = tb / ta



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