86 n features ? high output current (6a:str7000 series, 12a: str7100 series) ? high efficiency (70 to 90%) ? wide dc input voltage range ? built-in drooping type overcurrent protection circuit ? foldback type overcurrent protection can be set externally. ? output voltage adjustment ? built-in reference oscillator (35khz) ? output on/off control n applications ? electronic equipment n lineup n absolute maximum ratings power section: str7000/str7100 (t a =25 c) n control section: si-8020 series (t a =25 c) separate excitation switching type str7000+si-8020 series l str7000+si-8020 series unit v w c c symbol v in p d t op t stg v o (v) i o (a) 6 12 paraneter dc input voltage power dissipation operating temperature storage temperature unit v v v a w w c/w c c c symbol v 4-1 v 4-5 v 1-2 i c p d1 p d2 r th(j-c) t j t op t stg parameter power transistor breakdown voltage drive transistor breakdown voltage diode breakdown voltage collector current power dissipation power transistor thermal resistance power transistor junction temperature operating temperature storage temperature ratings 55 1 C20 to +85 C20 to +100 ratings str7000 series str7100 series 60 60 60 6(peak 7.5) 12(peak 15) 100(t c =25 c) 125(t c =25 c) 4.3(without heatsink) 1.25 1.0 +150 C30 to +125(t c ) C30 to +125 5121524 str7001+si-8020 str7002+si-8021 str7002+si-8022 str7003+si-8023 STR7101+si-8020 str7102+si-8021 str7102+si-8022 str7103+si-8023 .com .com .com .com 4 .com u datasheet
87 l str7000+si-8020 series n electrical characteristics: 6a type (t a =25 c) unit v v % kh z mv mv db a a n electrical characteristics: 12a type (t a =25 c) unit v v % kh z mv mv db a a symbol v in v o conditions h conditions f conditions d v oline conditions d v oload conditions r rej conditions i s1 i s2 conditions parameter dc input voltage range output voltage efficiency switching frequency line regulation load regulation ripple rejection overcurrent protection starting current limited current at overcurrent protection operation parameter dc input voltage range output voltage efficiency switching frequency line regulation load regulation ripple rejection overcurrent protection starting current limited current at overcurrent protection operation ratings STR7101+si-8020 str7102+si-8021 str7102+si-8022 str7103+si-8023 min. typ. max. min. typ. max. min. typ. max. min. typ. max. 11 40 18 50 21 50 30 50 5.0 5.1 5.2 11.8 12.0 12.2 14.8 15.0 15.2 23.7 24.0 24.3 v in =20v, i o =6.0a v in =27v, i o =6.0a v in =30v, i o =6.0a v in =40v, i o =6.0a 70 82 84 87 v in =20v, i o =6.0a v in =27v, i o =6.0a v in =30v, i o =6.0a v in =40v, i o =6.0a 35 35 35 35 v in =20v, i o =6.0a v in =27v, i o =6.0a v in =30v, i o =6.0a v in =40v, i o =6.0a 80 120 150 200 v in =15 to 25v, i o =6.0a v in =22 to 32v, i o =6.0a v in =25 to 35v, i o =6.0a v in =35 to 45v, i o =6.0a 30 40 40 50 v in =20v, i o =3 to 9a v in =27v, i o =3 to 9a v in =30v, i o =3 to 9a v in =40v, i o =3 to 9a 45 45 45 45 f=100 to 120h z f=100 to 120h z f=100 to 120h z f=100 to 120h z 12 15 12 15 12 15 12 15 12 15 12 15 12 15 12 15 r s =0.01 w r s =0.01 w r s =0.01 w r s =0.01 w ratings str7001+si-8020 str7002+si-8021 str7002+si-8022 str7003+si-8023 min. typ. max. min. typ. max. min. typ. max. min. typ. max. 11 40 18 50 21 50 30 50 5.0 5.1 5.2 11.8 12.0 12.2 14.8 15.0 15.2 23.7 24.0 24.3 v in =20v, i o =3.0a v in =27v, i o =3.0a v in =30v, i o =3.0a v in =40v, i o =3.0a 72 84 86 90 v in =20v, i o =3.0a v in =27v, i o =3.0a v in =30v, i o =3.0a v in =40v, i o =3.0a 35 35 35 35 v in =20v, i o =3.0a v in =27v, i o =3.0a v in =30v, i o =3.0a v in =40v, i o =3.0a 80 120 150 200 v in =15 to 25v, i o =3.0a v in =22 to 32v, i o =3.0a v in =25 to 35v, i o =3.0a v in =35 to 45v, i o =3.0a 30 40 40 50 v in =20v, i o =1 to 5a v in =27v, i o =1 to 5a v in =30v, i o =1 to 5a v in =40v, i o =1 to 5a 45 45 45 45 f=100 to 120h z f=100 to 120h z f=100 to 120h z f=100 to 120h z 6.0 7.5 6.0 7.5 6.0 7.5 6.0 7.5 6.0 7.5 6.0 7.5 6.0 7.5 6.0 7.5 r s =0.02 w r s =0.02 w r s =0.02 w r s =0.02 w symbol v in v o conditions h conditions f conditions d v oline conditions d v oload conditions r rej conditions i s1 i s2 conditions .com .com .com .com .com 4 .com u datasheet
88 n outline drawing q sw out (backside of case) w f ly w heel (ground) e drive r v in t gnd plastic mold package flammability: ul94v-0 weight: approx. 14.5g plastic mold package (powder coating) weight: approx. 3.4g str7000/7100 series si-8020 series n block diagram str7000/7100 series si-8020 series v in drive gnd f.wheel sw.out 4 3 52 1 v in 10 7 v ref 5 drive 1 gnd 2 v o adj 3v o .sense 6 8 4 compensation. b compensation. a curr.sense osc.out shut down pwm comp v o amp i o amp voltage reference and regulator 9 + + + dead time controlled ramp generator l str7000+si-8020 series (unit: mm) 36.0 0.3 2.0 0.2 24.4 0.2 5.45 4 2.0 3.0 30 3.5 5.45 1.0 +0.2 ?.1 0.6 +0.2 ?.1 12.0 0.3 21.2 0.3 3.2 0.1 4.7 max. 6.0 max. 20.0 min. qwert f lot number part number 6 max. 30 max. 1 pin dot 25 max. 0.27 0.05 0.5 0.05 2.54 0.1 7 max. 123456789 10 4.5 1.0 part number lot number .com .com .com .com .com 4 .com u datasheet
89 n standard external circuit n notes of pattern design 1) thick lines in the standard external circuit are lines through which a large current flows. make these pattern lines as thic k as possible. 2) place capacitor c 1 on the input side as closely as possible to terminals no.2 and no.4 of the str7000/7100 series. c 1 may be used in combination with a smoothing capacitor for rectifying, but the above points must be taken into consideration. in cases where c 1 is not provided or it is placed too far from the terminals stated above, abnormal oscillation due to poorer transient response or increased rin ging may occur. 3) connect voltage sensing terminal v o.s and gnd as closely as possible to output capacitor c 4 (a current of approximately 1ma flows into the v o.s terminal). if they are placed too far from c 4 , abnormal oscillation due to decreased regulation or increased switching ripple may occur. 4) connect current sensing terminal c.s and gnd as closely as possible to the detection resistor rs (a current of approximately 0.5ma flows from the cs terminal). if they are placed too far from rs, a decrease of the overcurrent setting point due to the voltage drop in the pattern, or malf unction of the protection circuit due to increased ringing may occur. n t a -p d characteristics str7000 series str7100 series 3 2 9 4 v in c 1 c 5 330p c 2 330p c 3 10 m f 2200 m f c 4 1500 m f 2 (parallel) v o gnd * c 5 str7100 series only 1 25 5 1 10 8 6 7 3 4 v in gnd f/w drive str7000 str7100 series sw v in v o.s r s v o . adj osc. out shut down v ref c.s c.a c.b gnd drive l * 6a ... 0.02 w 12a ... 0.01 w 5v ... 200 m h 12v ... 250 m h 15v 24v ... 300 m h si-8020 series 40 35 30 25 20 15 10 5 0 ?0 0 25 50 75 100 125 power dissipation p d (w) ambient temperature t a ( c) 200 300 2 200 200 2 100 200 2 100 100 2 75 75 2 without heatsink without mica with silicon grease heatsink: aluminum unit: mm 40 35 30 25 20 15 10 5 0 ?0 0 25 50 75 100 125 power dissipation p d (w) ambient temperature t a ( c) 200 300 2 200 200 2 100 200 2 100 100 2 75 75 2 without heatsink without mica with silicon grease heatsink: aluminum unit: mm l str7000+si-8020 series .com .com .com .com .com 4 .com u datasheet
90 n typical characteristics str7001+si-8020(5v) str7002+si-8021(12v) str7003+si-8023(24v) rise characteristics rise characteristics rise characteristics efficiency characteristics efficiency characteristics efficiency characteristics 0 10 8 6 4 2 0 2 4 6 8 10 12 14 16 18 20 input voltage v in (v) output voltage v o (v) i o =0.1a 3a 6a 100 90 80 70 60 50 40 30 0 01234567 output current i o (a) efficiency h (%) v in =11v 20v 30v 40v 0 5 10 15 20 25 30 35 40 45 i o =0.1a 6a 20 15 10 5 0 input voltage v in (v) output voltage v o (v) 3a 100 90 80 70 60 50 40 0 01 2 34 567 v in =18v 30v 40v 50v output current i o (a) efficiency h (%) 0 5 10 15 20 25 30 35 40 45 input voltage v in (v) 3a i o =0.1a 6a 30 25 20 15 10 5 0 output voltage v o (v) 100 90 80 70 60 50 40 0 01234567 v in =30v 40v 50v output current i o (a) efficiency h (%) 015 510 202530 45 40 35 30 25 20 15 10 5 0 input volta g e v in ( v ) output voltage v o (v) lo=0.1 a 12 a 06 24 8101214 100 90 80 70 60 50 0 output current i o (a) efficiency h (%) v in =30v 40v 50v STR7101+si-8020(5v) str7102+si-8021(12v) str7103+si-8023(24v) rise characteristics rise characteristics rise characteristics efficiency characteristics efficiency characteristics efficiency characteristics 02468101214161820 10 8 6 4 2 0 input voltage v in (v) output voltage v o (v) l o =0.1 a 6 a 12 a 06 24 8101214 100 90 80 70 60 50 40 30 0 output current i o (a) efficiency h (%) vin=11v 20v 30v 40v 020 51015 253035 45 40 20 15 10 5 0 input voltage v in (v) output voltage v o (v) lo=0.1 a 6 a 12 a 06 24 8101214 100 90 80 70 60 50 40 0 output current i o ( a ) efficiency h (%) v in =18v 30v 40v 50v (t a =25 c) l str7000+si-8020 series .com .com .com .com 4 .com u datasheet
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