STPS50U100C Ultralow forward voltage power Schottky rectifier Features A1 ■ Ultralow forward voltage drop ■ High current capability ■ High frequency operation ■ ECOPACK®2 compliant components K A2 A2 Description A1 K A2 A1 TO-220AB STPS50U100CT The STPS50U100C is a dual power Schottky diode rectifier, suited for high frequency switch mode power supply. Featuring an ultralow forward voltage drop, this device, packaged in TO-220AB and I²PAK, is intended to be used in notebook, game station and desktop adaptors as well as server SMPS. It has been especially designed to help power supply manufacturers meet the recently introduced worldwide efficiency standards. November 2009 K Table 1. I2PAK STPS50U100CR Device summary Symbol Value IF(AV) 2 x 25 A VRRM 100 V VF(TYP) @ 25 A @ 125 °C 0.64 V Tj (max) 150 °C Doc ID 16603 Rev 1 1/8 www.st.com 8 Characteristics STPS50U100C 1 Characteristics Table 2. Absolute ratings (limiting values per diode at 25 °C, unless otherwise specified) Symbol Parameter Value Unit VRRM Repetitive peak reverse voltage 100 V IF(RMS) Forward rms current 50 A IF(AV) Average forward current, δ = 0.5 TC = 120 °C Per diode TC = 105 °C Per device 25 50 A IFSM Surge non repetitive forward current tp = 10 ms, half sine-wave 250 A Tstg Storage temperature range -65 to + 150 °C 150 °C Value Unit 1.3 0.9 °C/W 0.45 °C/W Tj Maximum operating junction temperature(1) 1 dPtot < condition to avoid thermal runaway for a diode on its own heatsink Rth(j-a) dTj 1. Table 3. Thermal resistance Symbol Parameter Rth (j-c) Junction to case Rth (c) Coupling Per diode Per device When the diodes 1 and 2 are used simultaneously: ΔTj(diode 1) = P(diode1) x Rth(j-c)(Per diode) + P(diode 2) x Rth(c) Table 4. Symbol Static electrical characteristics Parameter Tests conditions Tj = 25 °C IR Reverse leakage current Tj = 125 °C Tj = 25 °C Tj = 125 °C Tj = 25 °C Tj = 125 °C VF Forward voltage drop Tj = 25 °C Tj = 125 °C Tj = 25 °C Tj = 125 °C VR = 70 V VR = VRRM IF = 5 A IF = 15 A IF = 25 A Min. Typ. Max. Unit - 15 - µA - 10 - mA - 30 200 µA - 15 40 mA - 0.48 - - 0.38 - - 0.58 - - 0.54 - - 0.67 0.73 - 0.64 0.7 V To evaluate the conduction losses use the following equation: P = 0.475 x IF(AV) + 0.009 IF2(RMS) 2/8 Doc ID 16603 Rev 1 STPS50U100C Figure 1. 28 Characteristics Average forward power dissipation Figure 2. versus average forward current (per diode) PF(AV)(W) IM(A) 250 δ = 0.05 24 δ = 0.1 δ = 0.2 δ = 0.5 Non repetitive surge peak forward current versus overload duration (maximum values, per diode) 225 δ=1 200 20 175 150 16 Tc = 25 °C 125 12 Tc = 75 °C 100 75 8 50 T 4 25 δ = tp / T 0 0 5 10 Figure 3. 1.E+02 15 tp 20 25 t δ = 0.5 IF(AV)(A) 0 30 1.E-03 35 Reverse leakage current versus reverse voltage applied (typical values, per diode) IR(mA) Tc = 125 °C IM t(s) 1.E-02 Figure 4. 1.E-01 Average forward current versus ambient temperature (δ = 0.5, per diode) IF(AV)(A) 30 Tj = 150 °C Rth(j-a) = Rth(j-c) 25 Tj = 125 °C 1.E+01 Tj = 100 °C 20 Tj = 75 °C 15 1.E+00 1.E+00 1.E-01 Tj = 50 °C 1.E-02 Tj = 25 °C 10 δ = tp / T VR(V) 1.E-03 tp 0 0 10 Figure 5. 1.0 T 5 20 30 40 50 60 70 80 90 100 0 25 Relative variation of thermal Figure 6. impedance junction to case versus pulse duration Zth(j-c)/Rth(j-c) 10000 Tamb(°C) 50 75 100 125 150 Junction capacitance versus reverse voltage applied (typical values, per diode) C(pF) F = 1 MHz Vosc = 30 mVRMS Tj = 25 °C 0.9 0.8 0.7 0.6 0.5 1000 0.4 0.3 0.2 Single pulse 0.1 0.0 1.E-04 tp(s) 1.E-03 1.E-02 1.E-01 1.E+00 100 VR(V) 1 Doc ID 16603 Rev 1 10 100 3/8 Application information Figure 7. STPS50U100C Forward voltage drop versus forward current (per diode) 50 IFM(A) 45 40 35 Tj = 125 °C (Maximum value) 30 25 20 Tj = 125 °C (Typical value) 15 Tj = 25 °C (Maximum value) 10 5 VFM(V) 0 0.0 2 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 Application information It is mandatory to ensure a peak reverse voltage below the VRRM absolute rating. Therefore, it is recommended to use a RC clamping snubber circuit in parallel with the STPS50U100C device. Figure 8. Application schematic R C DC/DC input DC/DC output STPS50U100C 4/8 Doc ID 16603 Rev 1 STPS50U100C 3 Package information Package information ● Epoxy meets UL94,V0 ● Cooling method: by conduction (C) ● Recommended torque value: 0.4 to 0.6 N·m In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK® packages, depending on their level of environmental compliance. ECOPACK® specifications, grade definitions and product status are available at: www.st.com. ECOPACK® is an ST trademark. Table 5. TO-220AB dimensions Dimensions Ref. Dia Min. Max. Min. Max. A 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 0.49 0.70 0.019 0.027 F 0.61 0.88 0.024 0.034 F1 1.14 1.70 0.044 0.066 F2 1.14 1.70 0.044 0.066 G 4.95 5.15 0.194 0.202 G1 2.40 2.70 0.094 0.106 H2 10 10.40 0.393 0.409 C L5 L7 L6 L2 F2 D L9 L4 L2 F M G1 Inches A H2 F1 Millimeters 16.4 typ. 0.645 typ. L4 13 14 0.511 0.551 L5 2.65 2.95 0.104 0.116 L6 15.25 15.75 0.600 0.620 L7 6.20 6.60 0.244 0.259 L9 3.50 3.93 0.137 0.154 E G M Diam. Doc ID 16603 Rev 1 2.6 typ. 3.75 3.85 0.102 typ. 0.147 0.151 5/8 Package information STPS50U100C I2PAK dimensions Table 6. Dimensions Ref. A E c2 L2 D L1 A1 b1 L b c e e1 6/8 Doc ID 16603 Rev 1 Millimeters Inches Min. Max. Min. Max. A 4.40 4.60 0.173 0.181 A1 2.40 2.72 0.094 0.107 b 0.61 0.88 0.024 0.035 b1 1.14 1.70 0.044 0.067 c 0.49 0.70 0.019 0.028 c2 1.23 1.32 0.048 0.052 D 8.95 9.35 0.352 0.368 e 2.40 2.70 0.094 0.106 e1 4.95 5.15 0.195 0.203 E 10 10.40 0.394 0.409 L 13 14 0.512 0.551 L1 3.50 3.93 0.138 0.155 L2 1.27 1.40 0.050 0.055 STPS50U100C 4 Ordering information Ordering information Table 7. Ordering information Order code Marking Package Weight Base qty Delivery mode STPS50U100CT STPS50U100C TO-220AB 2.23 g 50 Tube 1.49 g 50 Tube STPS50U100CR 5 STPS50U100C 2 I PAK Revision history Table 8. Document revision history Date Revision 17-Nov-2009 1 Changes First release. Doc ID 16603 Rev 1 7/8 STPS50U100C Please Read Carefully: Information in this document is provided solely in connection with ST products. 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