PROFET BTS 840 S2. Smart High-Side Power Switch Two Channels: 2 x 30mΩ Current Sense

Transcription

1 POFET BTS 84 S2 Smar High-Side Power Swich Two Channels: 2 x 3mΩ Curren Sense Produc Summary Package Operaing olage (on) Acive channels: one wo parallel On-sae esisance ON 3mΩ 15mΩ oad Curren (SO) (SO) 12A 24A Curren imiaion (SCr) 24A 24A P-DSO-2-12 (Power SO 2) General Descripion N channel verical power MOSFET wih charge pump, ground referenced CMOS compaible inpu, diagnosic feedback and proporional load curren sense monolihically inegraed in Smar SPMOS echnology. Providing embedded proecive funcions Applicaions µc compaible high-side power swich wih diagnosic feedback for 12 and 24 grounded loads All ypes of resisive, inducive and capacive loads Mos suiable for loads wih high inrush currens, so as lamps eplaces elecromechanical relays, fuses and discree circuis Basic Funcions CMOS compaible inpu Undervolage and overvolage shudown wih auo-resar and hyseresis Fas demagneizaion of inducive loads ogic ground independen from load ground Proecion Funcions Shor circui proecion Overload proecion Curren limiaion Thermal shudown Overvolage proecion (including load dump) wih exernal resisor everse baery proecion wih exernal resisor oss of ground and loss of proecion Elecrosaic discharge proecion (ESD) N1 1 S1 ogic Channel 1 1 Diagnosic Funcions Proporinal load curren sense Diagnosic feedback wih open drain oupu Open load deecion in OFF-sae wih exernal resisor Feedback of hermal shudown in ON-sae N2 2 S2 ogic Channel 2 POFET oad 1 2 oad 2 nfineon echnologies 1 of Oc-1

2 BTS 84 S2 Funcional diagram overvolage proecion inernal volage supply logic gae conrol + charge pump curren limi clamp for inducive load BB 1 N1 emperaure sensor 1 ESD Open load deecion O1 OAD S1 1 Curren sense 1 Channel 1 N2 2 S2 2 Conrol and proecion circui of channel 2 POFET 2 Pin Definiions and Funcions Pin configuraion Pin Symbol Funcion 1,1, 11,12, Posiive power supply volage. For high curren applicaions he hea slug should be used as connecion. 3 N1 npu 1,2, acivaes channel 1,2 in case of 7 N2 logic high signal 16,17, 18,19 12,13, 14, S1 9 S2 Oupu 1,2, proeced high-side power oupu of channel 1,2. All pins of each oupu have o be conneced in parallel for operaion according hs spec (e.g. k ilis ). Design he wiring for he max. shor circui curren Diagnosic feedback 1,2 of channel 1,2 open drain, invers o inpu level Ground 1,2 of chip channel 1,2 Sense curren oupu 1,2; proporional o he load curren, zero in he case of curren limiaion of he load curren Heaslug Posiiv powersupply volage. Good way o design a very low hermal resisance. (op view) N S N S Hea slug nfineon echnologies 2 23-Oc-1

3 BTS 84 S2 Maximum aings a T j = 25 C unless oherwise specified Parameer Symbol alues Uni Supply volage (overvolage proecion see page 5) 43 Supply volage for full shor circui proecion 34 T j,sar = C oad curren (Shor-circui curren, see page 5) self-limied A oad dump proecion 1) oaddump = A + s, A = 13.5 oad dump 3) 6 2) = 2 Ω, d = 2 ms; N = low or high, each channel loaded wih = 1. Ω, Operaing emperaure range Sorage emperaure range T j T sg C Power dissipaion (DC) 4) T a = 25 C: P o 3.8 W (all channels acive) T a = 85 C: 2. Maximal swichable inducance, single pulse = 12, T j,sar = 15 C 4), = 4 A, E AS = 1.13J, Ω one channel: Z 1 mh = 12 A, E AS = 43mJ, Ω one channel: 4.4 = 24 A, E AS = 8mJ, Ω wo parallel channels: 2. see diagrams on page 1 Elecrosaic discharge capabiliy (ESD) (Human Body Model) N:, S: ou o all oher pins shored: acc. M-D883D, mehod and ESD assn. sd. S =1.5kΩ; C=1pF ESD npu volage (DC) N Curren hrough inpu pin (DC) Curren hrough saus pin (DC) Curren hrough curren sense pin (DC) see inernal circui diagram page 9 N S ±2. ±5. ±14 ma k 1) Supply volages higher han (AZ) require an exernal curren limi for he and saus pins a 15Ω resisor for he connecion is recommended. 2) = inernal resisance of he load dump es pulse generaor 3) oad dump is se up wihou he DUT conneced o he generaor per SO and DN ) Device on 5mm*5mm*1.5mm epoxy PCB F4 wih 6cm 2 (one layer, 7µm hick) copper area for connecion. PCB is verical wihou blown air. nfineon echnologies 3 23-Oc-1

4 BTS 84 S2 Thermal Characerisics Parameer and Condiions Symbol alues Uni min yp max Thermal resisance juncion -case each channel: hjs 1 K/W juncion - ambien 4) Elecrical Characerisics one channel acive: all channels acive: hja Parameer and Condiions, each of he wo channels Symbol alues Uni a Tj = C, = 12 unless oherwise specified min yp max 37 3 oad Swiching Capabiliies and Characerisics On-sae resisance ( o ); = 5 A each channel, T j = 25 C: T j = 15 C: ON mω wo parallel channels, T j = 25 C: Oupu volage drop limiaion a small load currens, see page 14 =.5 A Tj = C: Nominal load curren, SO Norm one channel acive: wo parallel channels acive: SO , 6.7: on =.5 Tc = 85 C Oupu curren while disconneced or pulled up 5) ; = 3, N =, see diagram page 1 Turn-on ime 6) N o 9% : Turn-off ime N o 1% : = 12 Ω Slew rae on 6) 1 o 3%, = 12 Ω: Slew rae off 6) 7 o 4%, = 12 Ω: ON(N) 5 m (NOM) A (high) 8 ma on off µs d/d on.1 1 /µs -d/d off.1 1 /µs 5) no subjec o producion es, specified by design 6) See iming diagram on page 11. nfineon echnologies 4 23-Oc-1

5 BTS 84 S2 Parameer and Condiions, each of he wo channels Symbol alues Uni a Tj = C, = 12 unless oherwise specified min yp max Operaing Parameers Operaing volage 7) (on) Undervolage shudown (under) Undervolage resar Tj = C: (u rs) Tj =+15 C: 6. Undervolage resar of charge pump see diagram page 13 Tj = C: Tj =15 C: (ucp) Undervolage hyseresis (under).5 (under) = (u rs) - (under) Overvolage shudown (over) Overvolage resar (o rs) 33 Overvolage hyseresis (over) 1 Overvolage proecion 8) =4 ma Tj =-4: Tj = C: Sandby curren 9) T j =-4 C...25 C: N = T j =15 C: (AZ) (off) eakage oupu curren (included in (off) ); N = (off) 2 µa Operaing curren 1), N = 5, = 1 + 2, one channel on: wo channels on: µa ma Proecion Funcions 11) Curren limi, (see iming diagrams, page 12) Tj =-4 C: Tj =25 C: Tj =+15 C: epeiive shor circui curren limi, T j = T j each channel wo parallel channels (see iming diagrams, page 12) niial shor circui shudown ime T j,sar =25 C: (see iming diagrams on page 12) (lim) (SCr) off(sc) 4. ms A A 7) A supply volage increase up o = 4.7 yp wihou charge pump, - 2 8) Supply volages higher han (AZ) require an exernal curren limi for he and saus pins (a 15 Ω resisor in he connecion is recommended). See also ON(C) in able of proecion funcions and circui diagram page 9. 9) Measured wih load; for he whole device; all channels off 1) Add, if > 11) negraed proecion funcions are designed o preven C desrucion under faul condiions described in he daa shee. Faul condiions are considered as "ouside" normal operaing range. Proecion funcions are no designed for coninuous repeiive operaion. nfineon echnologies 5 23-Oc-1

6 BTS 84 S2 Parameer and Condiions, each of he wo channels Symbol alues Uni a Tj = C, = 12 unless oherwise specified min yp max Oupu clamp (inducive load swich off) 12) a ON(C) = -, = 4 ma Tj =-4 C: Tj =25 C...15 C: ON(C) Thermal overload rip emperaure T j 15 C Thermal hyseresis T j 1 K everse Baery everse baery volage 13) - 32 Drain-source diode volage (ou > ) - ON 6 m = - 4. A, Tj = +15 C Diagnosic Characerisics Curren sense raio 14), saic on-condiion, S =...5, (on) = )...27, ks = / S T j = -4 C, = 5 A: k S T j = -4 C, =.5 A: T j = C, = 5 A: T j = C, =.5 A: Curren sense oupu volage limiaion Tj = C S =, = 5 A: S(lim) Curren sense leakage/offse curren Tj = C N=, S =, = : S() 1 µa N=5, S =, = : S(H) 15 N=5, S =, = (shor circui) S(SH) 16) 1 Curren sense seling ime o S saic ±1% afer posiive inpu slope 16), = 5 A son(s) 3 µs 12) f channels are conneced in parallel, oupu clamp is usually accomplished by he channel wih he lowes ON(C) 13) equires a 15 Ω resisor in connecion. The reverse load curren hrough he inrinsic drain-source diode has o be limied by he conneced load. Power dissipaion is higher compared o normal operaing condiions due o he volage drop across he drain-source diode. The emperaure proecion is no acive during reverse curren operaion! npu and Saus currens have o be limied (see max. raings page 3 and circui page 9). 14) This range for he curren sense raio refers o all devices. The accuracy of he k S can be raised a leas by a facor of wo by maching he value of k S for every single device. n he case of curren limiaion he sense curren S is zero and he diagnosic feedback poenial is High. See figure 2c, page ) alid if (u rs) was exceeded before. 16) no subjec o producion es, specified by design nfineon echnologies 6 23-Oc-1

7 BTS 84 S2 Parameer and Condiions, each of he wo channels Symbol alues Uni a Tj = C, = 12 unless oherwise specified min yp max Curren sense seling ime o 1% of S saic afer negaive inpu slope 17), = 5 A soff(s) 3 1 µs Curren sense rise ime (6% o 9%) afer change of load curren 17), = A slc(s) 1 µs Open load deecion volage 18) (off-condiion) (O) nernal oupu pull down (pin 16,17,18,19 o 2 resp. 12,13,14,15 o 6), =5 O kω npu and Saus Feedback 19) npu resisance kω (see circui page 9) npu urn-on hreshold volage N(T+) 3.5 npu urn-off hreshold volage N(T-) 1.5 npu hreshold hyseresis N(T).5 Off sae inpu curren N =.4 : N(off) 1 5 µa On sae inpu curren N = 5 : N(on) µa Delay ime for saus wih open load d( O3) 4 µs afer npu neg. slope (see diagram page 14) Saus delay afer posiive inpu slope 17) don() 13 µs Saus delay afer negaive inpu slope 17) doff() 1 µs Saus oupu (open drain) Zener limi volage Tj = C, = +1.6 ma: (high) low volage Tj = C, = +1.6 ma: (low).4 Tj = +15 C, = +1.6 ma:.7 Saus leakage curren, = 5, Tj= C: (high) 2 µa 17) no subjec o producion es, specified by design 18) Exernal pull up resisor required for open load deecion in off sae. 19) f ground resisors are used, add he volage drop across hese resisors. nfineon echnologies 7 23-Oc-1

8 BTS 84 S2 Truh Table npu 1 Oupu 1 Saus 1 npu 2 Oupu 2 Saus 2 Curren Sense 1 Curren Sense 2 Normal operaion Currenlimiaion Shor circui o Overemperaure Shor circui o Open load Undervolage Overvolage level level level S H H H nominal H H H H H H 2 ) H H H H H 21) H H <nominal 22) 23 ) H ( 24) ) H H H H H H H Negaive oupu volage clamp = "ow" evel X = don' care Z = high impedance, poenial depends on exernal circui H = "High" evel Saus signal afer he ime delay shown in he diagrams (see fig 5. page 13) Parallel swiching of channel 1 and 2 is possible by connecing he inpus and oupus in parallel. The saus oupus 1 and 2 have o be configured as a 'Wired O' funcion wih a single pull-up resisor. The curren sense oupus S1 and S2 have o be conneced wih a single pull-down resisor. Terms N S1 N1 1 5 S1 eadframe N1 1 1 POFET Chip 1 S ,18 ON1 1 1 N S2 N2 2 9 S2 eadframe N2 2 2 POFET Chip 2 S ,14 ON2 2 2 eadframe ( ) is conneced o pin 1,1,11,2 Exernal opional; wo resisors 1, 2 = 15 Ω or a single resisor = 75 Ω for reverse baery proecion up o he max. operaing volage. 2) The volage drop over he power ransisor is - > 3 yp. Under his condiion he sense curren S is zero 21) An exernal shor of oupu o, in he off sae, causes an inernal curren from oupu o ground. f is used, an offse volage a he and pins will occur and he low signal may be errorious. 22) ow ohmic shor o may reduce he oupu curren and herefore also he sense curren S. 23) Power Transisor off, high impedance 24) wih exernal resisor beween BB and nfineon echnologies 8 23-Oc-1

9 BTS 84 S2 npu circui (ESD proecion), N1 or N2 N nducive and overvolage oupu clamp, 1 or 2 + ESD-ZD Z ON The use of ESD zener diodes as volage clamp a DC condiions is no recommended. Saus oupu, 1 or 2 +5 ON clamped o ON(C) = 47 yp. Power (ON) ESD- ZD ESD-Zener diode: 6.1 yp., max 5. ma; (ON) < 375 Ω a 1.6 ma. The use of ESD zener diodes as volage clamp a DC condiions is no recommended. Curren sense oupu, S1 or S2 S ESD-ZD S ESD-Zener diode: 6.1 yp., max 14 ma; S = 1 kω nominal S S Overvolage and reverse ba. Proecion For each channel + 5 S N S Z1 ogic Signal Z2 PO FET oad + oad Z1 = 6.1 yp., Z2 = 47 yp., = 15 Ω, =15kΩ, =4.5kΩ yp., S =1kΩ, =15kΩ, n case of reverse baery he curren has o be limied by he load. Temperaure proecion is no acive Open-load deecion 1 or 2 OFF-sae diagnosic condiion: > 3 yp.; N low EXT OFF Ou ogic O Signal nfineon echnologies 9 23-Oc-1

10 BTS 84 S2 disconnec, each channel nducive load swich-off energy dissipaion, each channel E N POFET N E AS E oad N = POFET Z { E Any kind of load. n case of N = high is N - N(T+). Due o >, no = low signal available. disconnec wih pull up each channel Energy sored in load inducance: E = 1 /2 2 While demagneizing load inducance, he energy dissipaed in POFET is E N POFET E AS = E + E - E = ON(C) i () d, wih an approximae soluion for > Ω: E AS = ( 2 + (C) ) ln (1+ (C) ) N Maximum allowable load inducance for a single swich off (one channel) 4) = f ( ); T j,sar = 15 C, = 12, = Ω Any kind of load. f > N - N(T+) device says off Due o >, no = low signal available. disconnec wih energized inducive load, each channel Z [mh] 1 high N 1 POFET 1 For inducive load currens up o he limis defined by Z (max. raings and diagram on page 1) each swich is proeced agains loss of. Consider a your PCB layou ha in he case of disconnecion wih energized inducive load all he load curren flows hrough he connecion [A] nfineon echnologies 1 23-Oc-1

11 BTS 84 S2 Timing diagrams Boh channels are symmeric and consequenly he diagrams are valid for channel 1 and channel 2 Figure 1a: Swiching a resisive load, change of load curren in on-condiion: N Figure 2a: Swiching a resisive load, urn-on/off ime and slew rae definiion: N don() doff() on off 9% on d/doff slc(s) slc(s) 1% d/don off oad 1 oad 2 S son(s) soff(s) The sense signal is no valid during seling ime afer urn or change of load curren. Figure 1b: urn on: N1 Figure 2b: Swiching a lamp: N N open drain 2 open drain proper urn on under all condiions The iniial peak curren should be limied by he lamp and no by he curren limi of he device. nfineon echnologies Oc-1

12 BTS 84 S2 Figure 2c: Swiching a lamp wih curren limi: Figure 3a: Turn on ino shor circui: shu down by overemperaure, resar by cooling N N1 oher channel: normal operaion 1 (lim) (SCr) S 1 = off(sc) S 1 Figure 2d: Swiching an inducive load N Heaing up of he chip may require several milliseconds, depending on exernal condiions Figure 3b: Turn on ino shor circui: shu down by overemperaure, resar by cooling (wo parallel swiched channels 1 and 2) N1/ x (lim) (SCr) (O) off(sc) S 1= S 2 = *) if he ime consan of load is oo large, open-load-saus may occur 1/2 1 and 2 have o be configured as a 'Wired O' funcion 1/2 wih a single pull-up resisor. nfineon echnologies Oc-1

13 BTS 84 S2 Figure 4a: Overemperaure: ese if T j <T j N Figure 6a: Undervolage: N no defined (under) (u cp) (u rs) S TJ S Figure 6b: Undervolage resar of charge pump Figure 5a: Open load: deecion (wih EXT), urn on/off o open load on ON(C) N d( O3) on-sae (over) offsae offsae (u rs) (o rs) open load (under) (u cp) S charge pump sars a (ucp) =4.7 yp. nfineon echnologies Oc-1

14 BTS 84 S2 Figure 7a: Overvolage: Figure 8b: Curren sense raio: N 15 k S ON(C) (over) (o rs) 1 5 S Figure 8a: Curren sense versus load curren 25 :: [A] [ma] S [A] 6 25 This range for he curren sense raio refers o all devices. The accuracy of he k S can be raised a leas by a facor of wo by maching he value of k S for every single device. Figure 9a: Oupu volage drop versus load curren: [].2.1. ON ON(N) ON [A] 8 nfineon echnologies Oc-1

15 BTS 84 S2 Package and Ordering Code Sandard: P-DSO-2-12 (Power SO 2) Sales Code BTS 84 Ordering Code Q676-S713 All dimensions in millimeres Published by nfineon Technologies AG, S.-Marin-Srasse 53, D München nfineon Technologies AG 21 All ighs eserved. Aenion please! The informaion herein is given o describe cerain componens and shall no be considered as a guaranee of characerisics. Terms of delivery and righs o echnical change reserved. We hereby disclaim any and all warranies, including bu no limied o warranies of non-infringemen, regarding circuis, descripions and chars saed herein. nfineon Technologies is an approved CECC manufacurer. nformaion For furher informaion on echnology, delivery erms and condiions and prices please conac your neares nfineon Technologies Office in Germany or our nfineon Technologies epresenaives worldwide (see address lis). Warnings Due o echnical requiremens componens may conain dangerous subsances. For informaion on he ypes in quesion please conac your neares nfineon Technologies Office. nfineon Technologies Componens may only be used in life-suppor devices or sysems wih he express wrien approval of nfineon Technologies, if a failure of such componens can reasonably be expeced o cause he failure of ha life-suppor device or sysem, or o affec he safey or effeciveness of ha device or sysem. ife suppor devices or sysems are inended o be implaned in he human body, or o suppor and/or mainain and susain and/or proec human life. f hey fail, i is reasonable o assume ha he healh of he user or oher persons may be endangered. nfineon echnologies Oc-1