STTA212 ST Microelectronics, Inc., STTA212 Datasheet - Page 7

• Manufacturer Part Number: STTA212
• Description: Turboswitch - Ultra-fast High Voltage Diode
• Manufacturer: ST Microelectronics, Inc.

APPLICATION DATA (Cont’d)
Fig. F : TURN-OFF CHARACTERISTICS
Fig. G : TURN-ON CHARACTERISTICS
V
V
trr = ta + tb
I
I
V
I
S = tb/ta
1.1V F
V Fp
I F
0
0
I RM
dI /dt
dI /dt
V F
I
trr = ta + tb
RM
F
dI
F
F
ta
ta
/dt = V
tb
tb
dI /dt
tfr
R
dI /dt
R
TRANSISTOR
/L
R
DIODE
S = tb / ta
OPERATION
RECTIFIER
I Fmax
V F
IL
t
V
t
VR
t
R
t
t
Turn-on losses :
(in the transistor, due to the diode)
Turn-off losses (in the diode) :
Turn-off losses :
with non negligible serial inductance
P3, P3’ and P5 are suitable for power MOSFET
and IGBT
Turn-on losses :
P4 = 0.4 (V
P3’ =
P5 =
+
V
FP
P3 =
V
R
V
R
- V
R
6 x dI
F
V
I
RM
) x I
R
I
RM
I
RM
2
2
F
Fmax
6 x
6 x dI
dt
I
2
RM
S F
I
dI
L
dI
F
2
x t
3
F
F
dt
S 2
fr
+
dt
dt
S
x F
2
L
S
I
F
RM
STTA212S
2
F
2
F
F
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