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(R)
STTA812D/DI/G
TURBOSWITCH TM 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 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. DESCRIPTION TURBOSWITCH 1200V drastically cuts losses in all high voltage operationswhich 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 T stg Tj Parameter Repetitive peak reverse voltage Non repetitive peak reverse voltage RMS forward current Repetitive peak forward current Surge non repetitive forward current TO-220AC/ D PAK TO-220AC Ins. tp = 5 s F = 5kHz square tp = 10ms sinusoidal
2
K
TO-220AC Ins. STTA812DI
A NC
D2PAK STTA812G
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.
Value 1200 1200 30 20 110 70 - 65 to + 150 150
Unit V V A A A A C C
Storage temperature range Maximum operating junction temperature
TURBOSWITCH is a trademark of STMicroelectronics.
November 1999 - Ed: 4C
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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 Tc= 105C TO-220AC Ins. Tc= 85C TO-220AC/D2PAK Tc= 100C TO-220AC Ins. 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 Irr = 0.25A IF = 0.5 A IR = 1A 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 t fr 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: Conductionlosses 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 Tj(C) dIF/dt(A/s) 0 100 200 300 400 500
0.8
0.7 25
0 100 125
50
75
Fig. 9: Forward recovery time versus dIF/dt (90% confidence).
tfr(ns) 600 500 400 300 200 dIF/dt(A/s) 100 0 100 200 300 400 500
VFR=1.1*VF max. IF=IF(av) Tj=125C
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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 =
VR x IRM 2 x ( 3 + 2 x S ) x F 6 x dIF dt VR x IRM x IL x ( S + 2 ) x F + 2 x dIF dt
I dI F /dt V I RM ta tb t dI R /dt VR trr = ta + tb I dI F /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 =
VR x IRM 2 x S x F 6 x dIF dt
S = tb / ta
RECTIFIER OPERATION
Turn-off losses : (with non negligible serial inductance) P3' =
VR x IRM 2 x S x F + 6 x dIF dt L x IRM 2 x F 2
P3,P3' and P5 are suitable for powerMOSFET and IGBT
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-220ACIns.
B b2 C
DIMENSIONS REF. Millimeters Inches Min. Typ. Max. Min. Typ. Max. 15.20 15.90 0.598 0.625
L F I A
A
a1 3.75 0.147 a2 13.00 14.00 0.511 0.551 B 10.00 0.61 1.23 4.40 0.49 2.40 4.80 6.20 3.75 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 0.409 0.034 0.051 0.181 0.027 0.107 0.212 0.259 0.151 b1 b2 C c1 c2 e F I I4 L l2 M
l4
a1
c2
l2 a2
b1 e
M c1
15.80 16.40 16.80 0.622 0.646 0.661 2.65 2.95 0.104 0.116 1.14 2.60 1.70 0.044 0.102 0.066
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 C2
Millimeters Min. Max. 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 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
Inches Min. Max. 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 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 A1 A2 B
D
L L3 A1 B2 B G A2 C R
B2 C C2 D E G L L2 L3 M R
M
*
0.40 typ.
0.016 typ.
V2
V2
* FLAT ZONE NO LESSTHAN 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 A
Millimeters Min. Max. 4.60 1.32 2.72 0.70 0.88 1.70 5.15 10.40 4.40 1.23 2.40 0.49 0.61 1.14 4.95 10.00
Inches Min. 0.173 0.048 0.094 0.019 0.024 0.044 0.194 0.393 Max. 0.181 0.051 0.107 0.027 0.034 0.066 0.202 0.409
A C D
L7
E F F1 G H2 L2 L4
L9 F1 L4
16.40 typ. 13.00 14.00 2.65 15.25 6.20 3.50 3.75 2.95 15.75 6.60 3.93 3.85
0.645 typ. 0.511 0.551 0.104 0.600 0.244 0.137 0.147 0.116 0.620 0.259 0.154 0.151
F G
M E
L5 L6 L7 L9 M Diam. I
2.6 typ.
0.102 typ.
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. D2PAK D2PAK Weight 1.86g 1.86g 1.48g 1.48g Base qty 50 250 50 500 Delivery mode Tube Box Tube Tape & reel
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) 1999 STMicroelectronics - Printed in Italy - All rights reserved. STMicroelectronics GROUP OF COMPANIES Australia - Brazil - China - Finland - France - Germany - Hong Kong - India - Italy - Japan - Malaysia Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - U.S.A. http://www.st.com 10/10

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