february 2010 doc id 3506 rev 6 1/10 10 stps2045c power schottky rectifier features very small conduction losses negligible switching losses extremely fast switching insulated package: to-220fpab insulating voltage = 2000 v dc capacitance = 12 pf avalanche rated description dual center tap schottky re ctifier suited for switch mode power supply and high frequency dc to dc converters. packaged either in to-220ab, to-220fpab, i 2 pa k , o r d 2 pak, this device is especially intended for use in low voltage, high frequency inverters, free wheeling and polarity protection applications. table 1. device summary symbol value i f(av) 2 x 10 a v rrm 45 v t j(max) 175 c v f(typ) 0.57 v i 2 pak stps2045cr d 2 pak stps2045cg to-220fpab stps2045cfp to-220ab stps2045ct a1 k a2 a1 k a2 a1 k a2 a1 a2 k k a1 a2 www.st.com
characteristics stps2045c 2/10 doc id 3506 rev 6 1 characteristics when the diodes 1 and 2 are used simultaneously : t j (diode 1) = p(diode 1) x r th(j-c) (per diode) + p(diode 2) x r th(c) table 2. absolute ratings (limiting values, per diode) symbol parameter value unit v rrm repetitive peak reverse voltage 45 v i f(rms) forward rms current 30 a i f(av) average forward current = 0.5 to-220ab d 2 pak i 2 pa k t c = 155 c per diode 10 a to-220fpab t c = 125 c per device 20 i fsm surge non repetitive forward current t p = 10 ms sinusoidal 180 a p arm repetitive peak avalanche power t p = 1 s t j = 25 c 4000 w t stg storage temperature range -65 to + 175 c t j maximum operating junction temperature (1) 1. condition to avoid thermal runaway for a diode on its own heatsink 175 c table 3. thermal resistances parameters symbol parameter value unit r th(j-c) junction to case to-220ab / d 2 pa k / i 2 pa k per diode to t a l 2.2 1.3 c/w to-220fpab per diode to t a l 4.5 3.5 r th(c) coupling to-220ab / d 2 pa k / i 2 pa k coupling 0.3 c/w to-220fpab 2.5 dptot dtj < 1 rth(j-a) table 4. static electrical characteristics (per diode) symbol test conditions min. typ. max. unit i r (1) reverse leakage current t j = 25 c v r = v rrm 100 a t j = 125 c 7 15 ma v f (1) forward voltage drop t j = 125 c i f = 10 a 0.5 0.57 v t j = 25 c i f = 20 a 0.84 t j = 125 c 0.65 0.72 1. pulse test : t p = 380 s, < 2% to evaluate the conduction losses use the following equation : p = 0.42 x i f(av) + 0.015 i f 2 (rms)
stps2045c characteristics doc id 3506 rev 6 3/10 figure 1. average forward power dissipation vs average forward current (per diode) figure 2. average forward current vs ambient temperature ( = 0.5, per diode) 0 1 2 3 4 5 6 7 8 9 10 11 12 0 1 2 3 4 5 6 7 8 p (w) f(av) i (a) f(av) t =tp/t tp = 1 = 0.5 = 0.2 = 0.1 = 0.05 i (a) f(av) 0 25 50 75 100 125 150 175 0 2 4 6 8 10 12 to-220ab d2pak to-220fpab t (c) amb t =tp/t tp r=r th(j-a) th(j-c) r =15c/w th(j-a) figure 3. normalized avalanche power derating vs pulse duration figure 4. normalized avalanche power derating vs junction temperature 0.001 0.01 0.1 0.01 1 0.1 10 100 1000 1 t (s) p p(t) p (1s) arm p arm 0 0.2 0.4 0.6 0.8 1 1.2 25 50 75 100 125 150 t (c) j p(t j ) p (25 c) arm arm figure 5. non repetitive surge peak forward current vs overload duration (maximum values, per diode) figure 6. non repetitive surge peak forward current vs overload duration (maximum values, per diode) 1e-3 1e-2 1e-1 1e+0 0 20 40 60 80 100 120 140 i (a) m t =100c c t =125c c t =75c c t(s) i m t =0.5 (to-220ab, d pak, i pak) 22 1e-3 1e-2 1e-1 1e+0 0 20 40 60 80 100 i (a) m t =100c c t =125c c t =75c c t(s) i m t =0.5 (to-220fpab)
characteristics stps2045c 4/10 doc id 3506 rev 6 figure 7. relative variation of thermal impedance junction to ambient vs pulse duration figure 8. relative variation of thermal impedance junction to ambient vs pulse duration (to-220fpab) 1e-4 1e-3 1e-2 1e-1 1e+0 0.0 0.2 0.4 0.6 0.8 1.0 single pulse = 0.1 = 0.2 = 0.5 t (s) p z/r th(j-c) th(j-c) t =tp/t tp (to-220ab, d pak, i pak) 22 1e-3 1e-2 1e-1 1e+0 1e+1 0.0 0.2 0.4 0.6 0.8 1.0 single pulse = 0.1 = 0.2 = 0.5 t (s) p z/r th(j-c) th(j-c) t =tp/t tp figure 9. reverse leakage current vs reverse voltage applied (typical values, per diode) figure 10. junction capacitance vs reverse voltage applied (typical values, per diode) 0 5 10 15 20 25 30 35 40 45 1e-1 1e+0 1e+1 1e+2 1e+3 1e+4 5e+4 i (a) r v (v) r t =150c j t =125c j t =100c j t =75c j t =50c j t =25c j 12 51020 50 100 200 500 1000 c(pf) v (v) r f=1mhz v =30mv t =25c osc rms j figure 11. forward voltage drop vs forward current (maximum values, per diode) figure 12. thermal resistance junction to ambient vs copper surface under tab 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 0.1 1.0 10.0 100.0 i (a) fm t =125c (typical values) j t =125c j t =25c j v (v) fm 0 5 10 15 20 25 30 35 40 0 10 20 30 40 50 60 70 80 s(cm2) r (c/w) th(j-a) (epoxy printed circuit board, copper thickness: 35 m) (d pak) 2
stps2045c package information doc id 3506 rev 6 5/10 2 package information epoxy meets ul94, v0 cooling method: by conduction (c) recommended torque value: 0.4 nm to 0.6 nm 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. figure 13. footprint (dimensions in mm) table 5. d 2 pak dimensions ref. dimensions millimeters inches min. max. min. max. a 4.40 4.60 0.173 0.181 a1 2.49 2.69 0.098 0.106 a2 0.03 0.23 0.001 0.009 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 1.23 1.36 0.048 0.054 d 8.95 9.35 0.352 0.368 e 10.00 10.40 0.393 0.409 g 4.88 5.28 0.192 0.208 l 15.00 15.85 0.590 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 0.40 typ. 0.016 typ. v2 0 8 0 8 g l l3 l2 b b2 e * flat zone no less than 2mm a c2 d r a2 m v2 c a1 * 16.90 10.30 8.90 3.70 5.08 1.30
package information stps2045c 6/10 doc id 3506 rev 6 table 6. to-220ab dimensions ref. dimensions millimeters inches min. max. min. max. a 4.40 4.60 0.17 0.18 b 0.61 0.88 0.024 0.035 b1 1.14 1.70 0.045 0.067 c 0.48 0.70 0.019 0.027 d 15.25 15.75 0.60 0.62 d1 1.27 typ. 0.05 typ. e 10 10.40 0.39 0.41 e 2.40 2.70 0.094 0.106 e1 4.95 5.15 0.19 0.20 f 1.23 1.32 0.048 0.052 h1 6.20 6.60 0.24 0.26 j1 2.40 2.72 0.094 0.107 l 13 14 0.51 0.55 l1 3.50 3.93 0.137 0.154 l20 16.40 typ. 0.64 typ. l30 28.90 typ. 1.13 typ. ?p 3.75 3.85 0.147 0.151 q 2.65 2.95 0.104 0.116 "gate" note s 9-10 a f e ?p q d b 1(x 3 ) b (x 3 ) e1 e j1 l20 h1 c l l1 l 3 0 "gate" note s 9-10 12 3 d1
stps2045c package information doc id 3506 rev 6 7/10 table 7. i 2 pak dimensions ref. dimensions 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 e l2 l1 b1 d a1 c c2 a b e e1 l
package information stps2045c 8/10 doc id 3506 rev 6 table 8. to-220fpab dimensions ref. dimensions millimeters inches min. max. min. max. a 4.4 4.6 0.173 0.181 b 2.5 2.7 0.098 0.106 d 2.5 2.75 0.098 0.108 e 0.45 0.70 0.018 0.027 f 0.75 1 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 2.4 2.7 0.094 0.106 h 10 10.4 0.393 0.409 l2 16 typ. 0.63 typ. l3 28.6 30.6 1.126 1.205 l4 9.8 10.6 0.386 0.417 l5 2.9 3.6 0.114 0.142 l6 15.9 16.4 0.626 0.646 l7 9.00 9.30 0.354 0.366 dia. 3.00 3.20 0.118 0.126 h a b dia l7 l6 l5 f1 f2 f d e l4 g1 g l2 l3
stps2045c ordering information doc id 3506 rev 6 9/10 3 ordering information 4 revision history table 9. ordering information order code marking package weight base qty delivery mode stps2045ct stps2045ct to-220ab 2.23 g 50 tube stps2045cr stps2045cr i 2 pak 1.49 g 50 tube stps2045cfp stps2045cfp to -220fpab 2.0 g 50 tube stps2045cg stps2045cg d 2 pak 1.48 g 50 tube stps2045cg-tr stps2045cg 1000 tape and reel table 10. document revision history date revision changes 05-oct-2004 4f last update 01-dec-2004 5 figure 16 (i 2 pak package mechanical data): references b1 and b2 changed from 1.17mm to 1.70mm. 05-feb-2010 6 updated ta b l e 2 (removed voltage). updated ecopack statement. updated table 6.: to-220ab dimensions .
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