STPS1545CT/CF/CG POWER SCHOTTKY RECTIFIER MAIN PRODUCT CHARACTERISTICS IF(AV) 2 x 7.5 A VRRM Tj (max) 45 V 175 °C VF (max) 0.57 V A1 K A2 K FEATURES AND BENEFITS VERY SMALL CONDUCTION LOSSES NEGLIGIBLE SWITCHING LOSSES EXTREMELY FAST SWITCHING INSULATED PACKAGE: ISOWATT220AB Insulating voltage = 2000V DC Capacitance = 12pF A2 A1 A2 K A1 TO-220AB STPS1545CT K ISOWATT220AB STPS1545CF K DESCRIPTION Dual center tap Schottky rectifier suited for SwitchMode Power Supply and high frequency DC to DC converters. Packaged either in TO-220AB, ISOWATT220AB or D2PAK, this device is especially intended for use in low voltage, high frequency inverters, free wheeling and polarity protection applications. A2 A1 D2PAK STPS1545CG ABSOLUTE RATINGS (limiting values, per diode) Symbol Parameter Value Unit VRRM Repetitive peak reverse voltage 45 V IF(RMS) RMS forward current 20 A Per diode 7.5 A Per device 15 IF(AV) Average forward current δ = 0.5 TO-220AB / D2PAK Tc = 157°C ISOWATT220AB Tc = 130°C IFSM Surge non repetitive forward current tp = 10 ms Sinusoidal IRRM Repetitive peak reverse current IRSM Tstg Non repetitive peak reverse current Storage temperature range Tj dV/dt * : 150 A tp = 2 µs square F = 1kHz 1 A tp = 100 µs square 2 -65 to +175 A °C 175 °C 10000 V/µs Maximum operating junction temperature * Critical rate of rise of reverse voltage 1 dPtot thermal runaway condition for a diode on its own heatsink < Rth(j−a) dTj June 1999 - Ed: 4B 1/7 STPS1545CT/CF/CG THERMAL RESISTANCES Symbol Rth (j-c) Parameter Junction to case Rth (c) Value Unit °C/W TO-220AB / D2PAK Per diode Total 3.0 1.7 ISOWATT220AB Per diode Total 5.5 4.2 TO-220AB / D2PAK Coupling 0.35 ISOWATT220AB 2.9 When the diodes 1 and 2 are used simultaneously: ∆ Tj (diode 1) = P (diode1)x Rth(j-c) (per diode) + P (diode 2) x Rth(c) STATIC ELECTRICAL CHARACTERISTICS (Per diode) Symbol Parameter IR * Reverse leakage current Tests Conditions Tj = 25°C Pulse test : Forward voltage drop Tj = 125°C IF = 7.5 A Tj = 25°C IF = 15 A Tj = 125°C IF = 15 A * tp = 380 µs, δ < 2% To evaluate the conduction losses use the following equation : P = 0.42 x IF(AV) + 0.020 IF2(RMS) 2/7 Typ. Max. Unit 100 µA 5 15 mA 0.5 0.57 V VR = VRRM Tj = 125°C VF * Min. 0.84 0.65 0.72 STPS1545CT/CF/CG Fig. 1: Average forward power dissipation versus average forward current (per diode). Fig. 2: Average current versus ambient temperature (δ= 0.5, per diod e). PF(av)(W) IF(av)(A) 6 δ = 0.1 δ = 0.2 δ = 0.5 δ = 0.05 5 δ= 1 4 3 2 T 1 IF(av) (A) 0 0 1 2 3 4 5 δ=tp/T 6 7 8 tp 9 10 Fig. 3-1: Non repetitive surge peak forward current versus overload duration (maximum values, per diode) (TO-220AB and D2PAK). 9 8 7 6 5 4 3 2 1 0 ISOWATT220AC Rth(j-a)=15°C/W Rth(j-a)=40°C/W T δ=tp/T 0 25 50 75 100 125 150 175 IM(A) 80 70 100 60 80 50 60 Tc=50°C 40 Tc=100°C 30 40 IM 20 Tc=150°C t 0 1E-3 1E-2 Tc=50°C Tc=100°C 20 1E-1 1E+0 Fig. 4-1: Relative variation of thermal transient impedance junction to case versus pulse duration (per diode) (TO-220AB and D2PAK). Tc=150°C IM 10 t(s) δ=0.5 t t(s) δ=0.5 0 1E-3 1E-2 1E-1 1E+0 Fig. 4-2: Relative variation of thermal transient impedance junction to case versus pulse duration (per diode) (ISOWATT220AB). Zth(j-c)/Rth(j-c) Zth(j-c)/Rth(j-c) 1.0 1.0 0.8 0.8 0.6 δ = 0.5 δ = 0.5 0.4 0.4 δ = 0.2 0.2 Tamb(°C) tp Fig. 3-2: Non repetitive surge peak forward current versus overload duration (maximum values, per diode) (ISOWATT220AB). IM(A) 120 0.6 TO-220AC D PAK Rth(j-a)=Rth(j-c) T δ = 0.1 0.2 tp(s) Single pulse 0.0 1E-4 1E-3 1E-2 δ=tp/T 1E-1 T δ = 0.2 δ = 0.1 Single pulse tp 1E+0 0.0 1E-3 1E-2 tp(s) 1E-1 δ=tp/T 1E+0 tp 1E+1 3/7 STPS1545CT/CF/CG Fig. 5: Reverse leakage current versus reverse voltage applied (typical values, per diode). Fig. 6: Junction capacitance versus reverse voltage applied (typical values, per diode). C(pF) IR(µA) 1000 5E+4 1E+4 Tj=150°C 1E+3 Tj=100°C F=1MHz Tj=25°C Tj=125°C 500 Tj=75°C 1E+2 Tj=50°C 1E+1 200 Tj=25°C 1E+0 1E-1 VR(V) VR(V) 0 5 10 15 20 25 30 35 40 45 Fig. 7: Forward voltage drop versus forward current (maximum values, per diode). 100 1 2 5 10 20 50 Fig. 8: Thermal resistance junction to ambient versus copper surface under tab (Epoxy printed circuit board, copper thickness: 35µm). IFM(A) Rth(j-a) (°C/W) 100.0 80 70 Tj=125°C Typical values 60 Tj=25°C 10.0 50 40 Tj=125°C 30 1.0 20 10 VFM(V) 0.1 0.0 4/7 0.2 0.4 0.6 0.8 0 1.0 1.2 1.4 1.6 S(Cu) (cm ) 0 2 4 6 8 10 12 14 16 18 20 STPS1545CT/CF/CG PACKAGE MECHANICAL DATA D2PAK DIMENSIONS REF. C2 L2 D L L3 A1 B2 R C B G A2 M * V2 * FLAT ZONE NO LESSTHAN 2mm Inches Min. Max. Min. Max. A 4.40 4.60 0.173 0.181 A1 A2 2.49 0.03 2.69 0.23 0.098 0.001 0.106 0.009 A E Millimeters B 0.70 0.93 0.027 0.037 B2 1.14 1.70 0.045 0.067 C 0.45 0.60 0.017 0.024 C2 D 1.23 8.95 1.36 9.35 0.048 0.352 0.054 0.368 E 10.00 10.40 0.393 0.409 G L 4.88 15.00 5.28 15.85 0.192 0.590 0.208 0.624 L2 1.27 1.40 0.050 0.055 L3 1.40 1.75 0.055 0.069 M 2.40 3.20 0.094 0.126 R V2 0.40 typ. 0° 8° 0.016 typ. 0° 8° FOOTPRINT DIMENSIONS (in millimeters) 16.90 10.30 5.08 1.30 3.70 8.90 5/7 STPS1545CT/CF/CG PACKAGE MECHANICAL DATA TO-220AB DIMENSIONS REF. A H2 Dia C L5 L7 L6 L2 F2 F1 D L9 L4 M G1 E G Min. Max. Min. Max. 4.40 4.60 0.173 0.181 C 1.23 1.32 0.048 0.051 D 2.40 2.72 0.094 0.107 E F 0.49 0.61 0.70 0.88 0.019 0.024 0.027 0.034 F1 1.14 1.70 0.044 0.066 F2 G 1.14 4.95 1.70 5.15 0.044 0.194 0.066 0.202 G1 2.40 2.70 0.094 0.106 H2 10 10.40 0.393 0.409 16.4 typ. 0.645 typ. L4 L5 13 2.65 14 2.95 0.511 0.104 0.551 0.116 L6 15.25 15.75 0.600 0.620 L7 L9 6.20 3.50 6.60 3.93 0.244 0.137 0.259 0.154 M Diam. 6/7 Inches A L2 F Millimeters 2.6 typ. 3.75 3.85 0.102 typ. 0.147 0.151 STPS1545CT/CF/CG PACKAGE MECHANICAL DATA ISOWATT220AB DIMENSIONS REF. Millimeters Inches Min. Max. Min. Max. A 4.40 4.60 0.173 0.181 B 2.50 2.70 0.098 0.106 D 2.50 2.75 0.098 0.108 E 0.40 0.70 0.016 0.028 F 0.75 1.00 0.030 0.039 F1 1.15 1.70 0.045 0.067 F2 1.15 1.70 0.045 0.067 G 4.95 5.20 0.195 0.205 G1 2.40 2.70 0.094 0.106 H 10.00 10.40 0.394 0.409 L2 16.00 typ. 0.630 typ. L3 28.60 30.60 1.125 1.205 L4 9.80 10.60 0.386 0.417 L6 15.90 16.40 0.626 0.646 Type Marking Package Weight Base qty Delivery mode STPS1545CT STPS1545CT TO-220AB 2.23 g. 50 Tube STPS1545CF STPS1545CF ISOWATT220AB 2.08 g. 50 Tube STPS1545CG STPS1545CG D2PAK 1.48 g. 50 Tube STPS1545CG-TR STPS1545CG D2PAK 1.48 g. 1000 Tape & reel Cooling method: by conduction (C) Expoxy 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. 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