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(R)
STTA812D/DI/G
TURBOSWITCH ULTRA-FAST HIGH VOLTAGE DIODE
MAIN PRODUCT CHARACTERISTICS IF(AV) VRRM trr (typ) VF (max) 8A 1200V 50ns
A
A K
K
2.0V
K
TO-220AC STTA812D FEATURES AND BENEFITS
s
TO-220AC Ins. STTA812DI
K
s
s
s
s
ULTRA-FAST, SOFT RECOVERY. VERY LOW OVERALL POWER LOSSES IN BOTH THE DIODE AND THE COMPANION TRANSISTOR. HIGH FREQUENCY AND/OR HIGH PULSED CURRENT OPERATION. HIGH REVERSE VOLTAGE CAPABILITY INSULATED PACKAGE : TO-220AC Ins. Electrical insulation : 2500VRMS Capacitance : 7pF.
A NC
D2PAK STTA812G
DESCRIPTION TURBOSWITCH 1200V drastically cuts losses in all high voltage operations which require extremely fast, soft and noise-free power diodes. Due to their optimized switching performances they also highly decrease power losses in any associated switching IGBT or MOSFET in all "freewheel mode" operations. ABSOLUTE RATINGS (limiting values) Symbol VRRM VRSM IF(RMS) IFRM IFSM Tstg Tj Parameter Repetitive peak reverse voltage Non repetitive peak reverse voltage RMS forward current Repetitive peak forward current Surge non repetitive forward current Storage temperature range Maximum operating junction temperature TO-220AC/ D2PAK TO-220AC Ins. tp = 5 s F = 5kHz square tp = 10ms sinusoidal Value 1200 1200 30 20 110 70 - 65 to + 150 150 Unit V V A A A A C C They are particularly suitable in motor control circuitries, or in the primary of SMPS as snubber, clamping or demagnetizing diodes. They are also suitable for secondary of SMPS as high voltage rectifier diodes.
TURBOSWITCH is a trademark of STMicroelectronics.
May 2002 - Ed: 5C
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STTA812D/DI/G
THERMAL AND POWER DATA Symbol Rth(j-c) P1 Pmax Parameter Junction to case thermal resistance Conduction power dissipation IF(AV) = 8A =0.5 Total power dissipation Pmax = P1 + P3 (P3 = 10% P1) TO-220AC/D PAK TO-220AC Ins. TO-220AC/D2PAK TO-220AC Ins. TO-220AC/D2PAK TO-220AC Ins. Tc= 105C Tc= 85C Tc= 100C Tc= 79C
2
Conditions
Value 2.3 3.3 19.5 21.5
Unit C/W W W
STATIC ELECTRICAL CHARACTERISTICS Symbol VF IR
*
Parameter Forward voltage drop Reverse leakage current Threshold voltage Dynamic parameter
* tp = 380 s, < 2% ** tp = 5 ms , < 2%
Test conditions IF =8A VR =0.8 x VRRM Ip < 3.IAV Tj = 25C Tj = 125C Tj = 25C Tj = 125C Tj = 125C
Min
Typ 1.35 0.6
Max 2.2 2.0 100 4 1.57 54
Unit V V A mA V m
**
Vto rd
Test pulses :
To evaluate the maximum conduction losses use the following equation : P = Vto x IF(AV) + rd x IF2(RMS) DYNAMIC ELECTRICAL CHARACTERISTICS TURN-OFF SWITCHING Symbol trr Parameter Reverse recovery time Maximum reverse recovery current Softness factor Test conditions Tj = 25C IF = 0.5 A IR = 1A Irr = 0.25A IF = 1 A dIF/dt =-50A/s VR =30V Tj = 125C VR = 600V dIF/dt = -64 A/s dIF/dt = -500 A/s Tj = 125C VR = 600V dIF/dt = -500 A/s IF = 8A 12 25 IF = 8A 1.2 Min Typ 50 100 A Max Unit ns
IRM
S factor
TURN-ON SWITCHING Symbol tfr Parameter Forward recovery time Test conditions Tj = 25C IF =8 A, dIF/dt = 64 A/s measured at 1.1 x VFmax Tj = 25C IF =8A, dIF/dt = 64 A/s IF =40A, dIF/dt = 500 A/s Min Typ Max 900 V 35 45 Unit ns
VFp
Peak forward voltage
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STTA812D/DI/G
Fig. 1: Conduction losses versus average current. Fig. 2: Forward voltage drop versus forward current (maximum values).
IFM(A)
= 0.1 = 0.2 = 0.5
P1(W) 20 18 16 14 12 10 8 6 4 2 0
100.0
Tj=125C
=1
10.0
1.0
IF(av) (A) 0 2 4 6 8 10
0.1 0.0 1.0
VFM(V) 2.0 3.0 4.0 5.0
Fig. 3: Relative variation of thermal impedance junction to case versus pulse duration.
Zth(j-c)/Rth(j-c) 1.0 0.8 0.6
= 0.5
Fig. 4: Peak reverse recovery current versus dIF/dt (90% confidence).
IRM(A) 50 40 30 20
IF=0.5*IF(av) VR=600V Tj=125C IF=2*IF(av) IF=IF(av)
0.4 0.2
= 0.2 = 0.1 Single pulse
10
tp(s) 1E-3 1E-2 1E-1 1E+0
0 0 100
dIF/dt(A/s) 200 300 400 500
0.0 1E-4
Fig. 5: Reverse recovery time versus dIF/dt (90% confidence).
trr(ns) 550 500 450 400 350 300 250 200 150 100 50 0
Fig. 6: Softness factor (tb/ta) versus dIF/dt (typical values).
S factor 1.40
VR=600V Tj=125C IF=2*IF(av) IF=IF(av)
VR=600V IF<2*IF(av) Tj=125C
1.20
1.00
IF=0.5*IF(av)
dIF/dt(A/s) 0 100 200 300 400 500
0.80 0 100
dIF/dt(A/s)
200 300 400 500
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STTA812D/DI/G
Fig. 7: Relative variation of dynamic parameters versus junction temperature (reference Tj=125C). Fig.8: Transient peak forward voltage versus dIF/dt (90% confidence).
VFP(V) 70
S factor
1.1
60 50 40
1.0
IF=IF(av) Tj=125C
0.9
IRM
30 20 10
0.8 Tj(C) 0.7 25 50 75 100 125
dIF/dt(A/s)
0 100 200 300 400 500
0
Fig. 9: Forward recovery time versus dIF/dt (90% confidence).
tfr(ns) 600 500 400 300 200
dIF/dt(A/s)
VFR=1.1*VF max. IF=IF(av) Tj=125C
100
0
100
200
300
400
500
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STTA812D/DI/G
APPLICATION DATA The 1200V TURBOSWITCH series has been designed to provide the lowest overall power losses in all high frequency or high pulsed current operations. In such applications (Fig A to D),the way of calculating the power losses is given below :
TOTAL LOSSES due to the diode P = P1+ P2+ P3+ P4+ P5
Watts
CONDUCTION LOSSES in the diode
REVERSE LOSSES in the diode
SWITCHING LOSSES in the diode
SWITCHING LOSSES in the tansistor due to the diode
Fig. A: "FREEWHEEL" MODE.
SWITCHING TRANSISTOR
DIODE: TURBOSWITCH
IL
VR
t T F = 1/T = t/T
LOAD
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STTA812D/DI/G
Fig. B: SNUBBER DIODE. Fig. C: DEMAGNETIZING DIODE.
PWM t T = t/T
F = 1/T
Fig. D: RECTIFIER DIODE.
STATIC & DYNAMIC CHARACTERISTICS . POWER LOSSES . Fig. E: STATIC CHARACTERISTICS Conduction losses :
I
P1 = Vt0 . IF(AV) + Rd . IF2(RMS)
IF Rd VR V IR V tO VF
Reverse losses : P2 = VR . IR . (1 - )
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STTA812D/DI/G
APPLICATION DATA (Cont'd) Fig. F: TURN-OFF CHARACTERISTICS
V IL TRANSISTOR I t
Turn-on losses : (in the transistor, due to the diode) P5 =
V R x I RM
2
x( 3+
2xS )xF
6 x dI F dt V R x I RM x I L x ( S + 2 ) x F + 2 x dI F dt
I dI F /dt V I RM ta tb t dI R /dt VR
trr = ta + tb
I dIF /dt = VR /L V IRM ta tb t dI R /dt VR
trr = ta + tb S = tb/ta
DIODE
Turn-off losses (in the diode) : P3 =
V R x I RM
2
xSxF
6 x dI F
dt
S = tb / ta
RECTIFIER OPERATION
Turn-off losses : (with non negligible serial inductance) + 6 x dI F dt L x I RM 2 x F 2 P3,P3' and P5 are suitable for power MOSFET and IGBT P3' =
2
V R x I RM
x S xF
Fig. G: TURN-ON CHARACTERISTICS
IF dI F /dt I Fmax
0 VF V Fp
t
Turn-on losses : P4 = 0.4 (VFP - VF) . IFmax . tfr . F
1.1V F 0 tfr
VF t
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STTA812D/DI/G
PACKAGE DATA TO-220AC Ins.
B C
DIMENSIONS REF. Millimeters 15.20 3.75 13.00 10.00 0.61 1.23 4.40 0.49 2.40 4.80 6.20 3.75 2.65 1.14 2.60 14.00 0.511 10.40 0.393 0.88 0.024 1.32 0.048 4.60 0.173 0.70 0.019 2.72 0.094 5.40 0.189 6.60 0.244 3.85 0.147 2.95 0.104 1.70 0.044 0.102 Inches 0.625 0.147 0.551 0.409 0.034 0.051 0.181 0.027 0.107 0.212 0.259 0.151 0.116 0.066 Min. Typ. Max. Min. Typ. Max.
b2
L F I A
A a1 a2 B b1 b2 C c1 c2
a2
15.90 0.598
l4
a1
c2
l2
e F I I4
c1
b1 e
M
15.80 16.40 16.80 0.622 0.646 0.661
L l2 M
s
s
s
Cooling method: by conduction (C) Recommended torque value: 0.8 m.N Maximum torque value: 1.0 m.N
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STTA812D/DI/G
PACKAGE DATA D2PAK DIMENSIONS REF.
A E L2
Millimeters Min. Max. 4.60 2.69 0.23 0.93 1.70 0.60 1.36 9.35 10.40 5.28 15.85 1.40 1.75 3.20 8 4.40 2.49 0.03 0.70 1.14 0.45 1.23 8.95 10.00 4.88 15.00 1.27 1.40 2.40 0
Inches Min. 0.173 0.098 0.001 0.027 0.045 0.017 0.048 0.352 0.393 0.192 0.590 0.050 0.055 0.094 0 Max. 0.181 0.106 0.009 0.037 0.067 0.024 0.054 0.368 0.409 0.208 0.624 0.055 0.069 0.126 8
A
C2
A1 A2
D
B B2 C C2 D
L L3 A1 B2 B G A2 C R
E G L L2 L3 M
M
*
V2
R V2
0.40 typ.
0.016 typ.
* FLAT ZONE NO LESS THAN 2mm
FOOTPRINT DIMENSIONS (in millimeters)
16.90
10.30 1.30
5.08
3.70 8.90
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STTA812D/DI/G
PACKAGE DATA TO-220AC (JEDEC outline) DIMENSIONS REF.
H2 C L5 OI L6 L2 D L7 A
Millimeters Min. Max. 4.60 1.32 2.72 0.70 0.88 1.70 5.15 10.40 14.00 2.95 15.75 6.60 3.93 3.85 4.40 1.23 2.40 0.49 0.61 1.14 4.95 10.00 13.00 2.65 15.25 6.20 3.50 3.75
Inches Min. 0.173 0.048 0.094 0.019 0.024 0.044 0.194 0.393 0.511 0.104 0.600 0.244 0.137 0.147 Max. 0.181 0.051 0.107 0.027 0.034 0.066 0.202 0.409 0.551 0.116 0.620 0.259 0.154 0.151
A C D E F F1 G H2 L2 L4 L5
L9 F1 L4
16.40 typ.
0.645 typ.
F G
M E
L6 L7 L9 M Diam. I
2.6 typ.
0.102 typ.
s
s
s
Cooling method: by conduction (C) Recommended torque value: 0.55 m.N Maximum torque value: 0.7 m.N Ordering type STTA812D STTA812DI STTA812G STTA812G-TR Marking STTA812D STTA812DI STTA812G STTA812G Package TO-220AC TO-220AC Ins. D PAK D PAK
2 2
Weight 1.86g 1.86g 1.48g 1.48g
Base qty 50 250 50 500
Delivery mode Tube Bulk Tube Tape & reel
s
Epoxy meets UL94,V0
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.
The ST logo is a registered trademark of STMicroelectronics (c) 2002 STMicroelectronics - Printed in Italy - All rights reserved. STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - Finland - France - Germany Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Singapore Spain - Sweden - Switzerland - United Kingdom - United States. http://www.st.com 10/10

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