2-Phase Stepper-Motor Driver Bipolar-IC TLE4729G

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1 2-Phase Sepper-Moor Driver Bipolar-IC TLE4729G Feaures 2.7 amp. full bridge oupus Inegraed driver, conrol logic and curren conrol (chopper) ery low curren consumpion in inhibi mode Fas free-wheeling diodes Max. supply volage 45 Oupu sages are free of crossover curren Offse-phase urn-on of oupu sages All oupus shor-circui proof Error-flag for overload, open load, over-emperaure SMD package PG-DSO Green Produc (RoHS complian) AEC Qualified PG-DSO Type TLE4729G Package PG-DSO (SMD) Funcional Descripion TLE4729G is a bipolar, monolihic IC for driving bipolar sepper moors, DC moors and oher inducive loads ha operae by consan curren. I is fully pin and funcion compaible excep he curren programming is inverse o he TLE4728G wih an addiional inhibi feaure. The conrol logic and power oupu sages for wo bipolar windings are inegraed on a single chip which permis swiched curren conrol of moors wih.7 A per phase a operaing volages up o 16. The direcion and value of curren are programmable for each phase via separae conrol inpus. In he case of low a all four curren program inpus he device is swiched o inhibi mode auomaically. A common oscillaor generaes he iming for he curren conrol and urn-on wih phase offse of he wo oupu sages. The wo oupu sages in full-bridge configuraion include fas inegraed freewheeling diodes and are free of crossover curren. The device can be driven direcly by a microprocessor in several modes by programming phase direcion and curren conrol of each bridge independenly. Daa Shee 1 1.2,

2 Wih he wo error oupus he TLE4729G signals malfuncion of he device. Seing he conrol inpus low reses he error flag and by reacivaing he bridges one by one he locaion of he error can be found. Pin Configuraion (op view) TLE4729G Ι 1 Ι 11 Phase 1 OSC GND GND GND GND Q11 R 1 + S Q Ι 2 Ι 21 Phase 2 Error 1 GND GND GND GND Q21 R 2 Error 2 Q22 AEP2195 Figure 1 Daa Shee 2 1.2,

3 Pin Definiions and Funcions Pin Funcion 1, 2, 23, 24 Digial conrol inpus IX, IX1 for he magniude of he curren of he paricular phase. I se = 45 ma wih R sense = 1 Ω IX1 IX Phase Curren Example of Moor Saus L L No curren 1) L H.155 I se Hold H L I se Normal mode H H 1.55 I se Accelerae 1) No curren in boh bridges inhibis he circui and curren consumpion will sink below 5 µa (inhibi-mode) 3 Inpu phase 1; conrols he curren hrough phase winding 1. On H-poenial he phase curren flows from Q11 o Q12, on L-poenial in he reverse direcion. 5 8, 17 2 Ground; all pins are conneced a leadframe inernally. 4 Oscillaor; works a approx. 25 khz if his pin is wired o ground across 2.2 nf. 1 Resisor R 1 for sensing he curren in phase 1. 9, 12 Push-pull oupus Q11, Q12 for phase 1 wih inegraed free-wheeling diodes. 11 Supply volage; block o ground, as close as possible o he IC, wih a sable elecrolyic capacior of a leas 47 µf in parallel wih a ceramic capacior of 1 nf. 14 Error 2 oupu; signals wih low he errors: shor circui o ground of one or more oupus or over-emperaure. 13, 16 Push-pull oupus Q22, Q21 for phase 2 wih inegraed free-wheeling diodes. 15 Resisor R 2 for sensing he curren in phase Error 1 oupu; signals wih low he errors: open load or shor circui o + S of one or more oupus or shor circui of he load or overemperaure. 22 Inpu phase 2; conrols he curren flow hrough phase winding 2. On H-poenial he phase curren flows from Q21 o Q22, on L-poenial in he reverse direcion. Daa Shee 3 1.2,

4 Block Diagram + S C OSC OSC Ι 1 Ι 11 Phase 1 Error 1 Oscillaor Funcion Logic Phase 1 T11 T13 D11 D13 T12 D12 T14 D14 Q11 Q12 R 1 Error 2 Error-Flag Generaion TLE 4729 G R sense + S Ι 2 Ι 21 Phase 2 Inhibi Funcion Logic Phase 2 T21 T23 D21 D23 T22 D22 T24 D24 Q21 Q22 R 2 GND R sense AEB2196 Figure 2 Daa Shee 4 1.2,

5 Absolue Maximum Raings T j = 4 o 15 C Parameer Symbol Limi alues Uni Remarks min. max. Supply volage S.3 45 Error oupus Err.3 I Err 45 3 ma Oupu curren I Q 1 1 A Ground curren I GND 2 A Logic inpus IXX IXX; Phase 1, 2 Oscillaor volage OSC.3 6 R 1, R 2 inpu volage RX.3 5 Juncion emperaure T j 4 15 C Sorage emperaure T sg 5 15 C Thermal resisances Juncion-ambien Juncion-ambien (soldered on a 35 µm hick 2 cm 2 PC board copper area) Juncion-case R h ja R h ja R h jc K/W K/W K/W Measured on pin 5 Operaing Range Supply volage S 5 16 Case emperaure T C 4 11 C Measured on pin 5 P diss = 2 W Oupu curren I Q 8 8 ma Logic inpus IXX IXX; Phase 1, 2 Error oupus Err I Err 25 1 ma Daa Shee 5 1.2,

6 Characerisics S = 6 o 16 ; T j = 4 o 13 C Parameer Symbol Limi alues Uni Tes Condiion min. yp. max. Curren Consumpion From + S From + S I S I S µa ma IXX = L; S = 12 ; T j 85 C I Q1, 2 = A Oscillaor Oupu charging curren Charging hreshold Discharging hreshold Frequency I OSC OSCL OSCH f OSC µa khz C OSC = 2.2 nf Phase Curren ( S = 9 16 ) Mode no curren olage hreshold of curren Comparaor a R sense in mode: Hold Sepoin Accelerae I Q ch cs ca ma m m m IX = L; IX1 = L IX = H; IX1 = L IX = L; IX1 = H IX = H; IX1 = H Logic Inpus (Phase X) Threshold Hyseresis L-inpu curren L-inpu curren H-inpu curren I IHy I IL I IL I IH m µa µa µa I = 1.2 I = I = 5 Logic Inpus (IX1; IX) Threshold Hyseresis L-inpu curren H-inpu curren I IHy I IL I IH m µa µa I = I = 5 Daa Shee 6 1.2,

7 Characerisics (con d) S = 6 o 16 ; T j = 4 o 13 C Parameer Symbol Limi alues Uni Tes Condiion min. yp. max. Error Oupus Sauraion volage Leakage curren ErrSa 5 I ErrL m µa I Err = 1 ma Err = 25 Thermal Proecion Shudown Prealarm Dela Hyseresis shudown Hyseresis prealarm T jsd T jpa T j T jsdhy T jpahy C C K K K I Q1, 2 = A Err = L T j = T jsd T jpa Power Oupus Diode Transisor Sink Pair (D13, T13; D14, T14; D23, T23; D24, T24) Sauraion volage Sauraion volage Reverse curren Forward volage Forward volage sai sai I RI FI FI µa I Q =.45 A I Q =.7 A S = Q = 4 I Q =.45 A I Q =.7 A Diode Transisor Source Pair (T11, D11; T12, D12; T21, D21; T22, D22) Sauraion volage Sauraion volage Sauraion volage Sauraion volage Reverse curren Forward volage Forward volage Diode leakage curren sauc saud sauc saud I Ru Fu Fu I SL µa ma I Q =.45 A; charge I Q =.45 A; discharge I Q =.7 A; charge I Q =.7 A; discharge S = 4, Q = I Q =.45 A I Q =.7 A I F =.7 A Daa Shee 7 1.2,

8 Characerisics (con d) S = 6 o 16 ; T j = 4 o 13 C Parameer Symbol Limi alues Uni Tes Condiion min. yp. max. Error Oupu Timing Time Phase X o IXX Time IXX o Phase X Delay Phase X o Error 2 Delay Phase X o Error 1 Delay IXX o Error 2 Rese delay afer Phase X Rese delay afer IXX PI IP PEsc PEol IEsc RP RI µs µs µs µs µs µs µs For deails see nex four pages. These parameers are no 1% esed in producion, bu guaraneed by design. Daa Shee 8 1.2,

9 Diagrams Timing beween IXX and Phase X o preven seing he error flag Operaing condiions: + S = 14, T j = 25 C, I err = 1 ma, load = 3.3 mh, 1 Ω a) ΙXX Phase X PI AET2197 If PI < yp. 5 µs, an error open load will be se. b) ΙXX Phase X IP AET2198 If IP < yp. 12 µs, an error open load will be se. Daa Shee 9 1.2,

10 This ime srongly depends on + S and induciviy of he load, see diagram below. Time IP vs. Load Induciviy 3 µ s IP 25 2 S = 6 AED mh 6 L Propagaion Delay of he Error Flag Operaing condiions: + S = 14, T j = 25 C, I err = 1 ma, load = 3.3 mh, 1 Ω a) IXX = H, error condiion: shor circui o GND. Phase X Error 2 PEsc AED22 yp. PEsc : 45 µs Daa Shee 1 1.2,

11 b) IXX = H, error condiion: open load (equivalen: shor circui o + S ). Phase X Error 1 PEol AET221 yp. PEol : 15 µs c) Phase X = H or L, cons.; error condiion: shor circui o GND. ΙXX Error 2 IEsc AET222 yp. IEsc : 3 µs IEsc is also measured under he condiion: begin of shor circui o GND ill error flag se. Daa Shee ,

12 d) IXX = H, rese of error flag when error condiion is no rue. Phase x Error X RP AET223 yp. RP : 3 µs e) Phase X = H or L, cons.; rese of error flag when error condiion is no rue. ΙXX Error X RI AET224 yp. RI : 1 µs Daa Shee ,

13 Quiescen Curren I S vs. Supply olage S ; bridges no chopping; T j = 25 C Quiesc. Curren I S vs. Junc. Temp. T j ; bridges no chopping, S = 14 Ι S 6 ma AED225 = Ι QX.7 A.45 A.7 A 6 ma Ι S AED226 Ι QX =.7 A.45 A.7 A S C T j 15 Oscillaor Frequency f Osc vs. Juncion Temperaure T j Oupu Curren I QX vs. Juncion Temperaure T j 3 khz f Osc AED227 8 ma 7 Ι QX 6 AED228 ΙX1 = H, ΙX = H S = 14 C OSC = 2.2 nf S = 14 R X = 1Ω ΙX1 = H, ΙX = L C T j C T j 15 Daa Shee ,

14 Oupu Sauraion olages sa vs. Oupu Curren I Q Forward Curren I F of Free-Wheeling Diodes vs. Forward olages F 2. sa 1.5 S T j = 14 = 25 C AED229 AED Ι F A T j = 25 C Fl Fu.8 1. sauc sal saud A.8 Ι Q F Typical Power Dissipaion P o vs. Oupu Curren I Q (non sepping) Permissible Power Dissipaion P o vs. Case Temp. T C (measured a pin 5) P o 4 W 3 L phase x = 1 mh R phase x = 2 Ω C OSC = 2.2 nf T C = 25 C boh phases acive AED P o W 12 1 AED S = T jmax = 15 C 12 C A.8 Ι Q C 175 T C Daa Shee ,

15 Inpu Characerisics of I XX, Phase X Oupu Leakage Curren i Ι xx 4 µ A 2 Ι xx AED ma Ι R.8 AED T j = 4 C 25 C 15 C Phase X S = 16 S = Ιxx Q 4 Quiescen Curren I S vs. Supply olage S ; inhibi mode; T j = 25 C Ι S 25 µa 2 AED S 2 Daa Shee ,

16 1 nf 1 µ F Microconroller Ι1 Ι11 Phase 1 Error 1 Error 2 Ι2 Ι21 Phase 2 OSC 4 22 nf TLE 4729 G 15 R 2 1Ω 1 R 1 1Ω S 9 Q11 12 Q12 16 Q21 Q22 13 GND 5,6,7,8, 17,18,19,2 M Sepper Moor AES2216 Figure 3 Applicaion Circui Daa Shee ,

17 1 µ F 1 nf Ι S S + S sau Fu Ι Ι Ι Ι Err ΙXX, Phase X Error X TLE 4729 G Oupu Ι Q Ι Rl Ι Ru Err OSC Osc Ι OSC 2.2 nf Ι SL GND Ι GND C R sense Ι Rsense 1Ω Fl sal AES2217 Figure 4 Tes Circui Daa Shee ,

18 accelerae mode full sep operaion normal mode H Ι1 L H Ι11 L H Phase 1 L i acc i se Ι Q1 -i se - i acc i acc i se Ι Q2 -i se - i acc Phase 2 Ι 2 Ι 21 H L H L H L AED2218 Figure 5 Full Sep Operaion Daa Shee ,

19 accelerae mode half sep operaion normal mode Ι1 Ι11 H L H L H Phase 1 L i acc i se Ι Q1 Ι Q2 -i se - i acc i acc i se -i se - i acc H Phase 2 L Ι 2 H L Ι 21 H L AED2219 Figure 6 Half Sep Operaion Daa Shee ,

20 Osc Osc H Osc L Ι Rsense 1 Ι Rsense 2 Q12 + S FU sal ca Q11 + S sau D sau C Q22 + S Q21 + S Ι Q1 i acc Ι i Q2 acc Operaing condiions: S = 14 Phase x = H L phase x = 1 mh Rphase x = 4 Ω ΙXX = H AED222 Figure 7 Curren Conrol in Chop-Mode Daa Shee 2 1.2,

21 Phase Osc H L Oscillaor High Imped. Phase change-over Ι Rsense 1 Q11 + S High Impedance Q12 + S High Impedance Ι Ι se Phase 1 fas curren decay T 1 Operaing condiions: slow curren decay S = 14 Ι11 = L for < T 1 L phase 1 = 1 mh Ι11 = H for > T 1 Rphase 1 = 4 Ω Ι1 = Ι 2X = L - Ι se slow curren decay AED2221 Figure 8 Phase Reversal and Inhibi Daa Shee ,

22 Calculaion of Power Dissipaion The oal power dissipaion P o is made up of Sauraion losses P sa (ransisor sauraion volage and diode forward volages), Quiescen losses P q (quiescen curren imes supply volage) and Swiching losses P s (urn-on / urn-off operaions). The following equaions give he power dissipaion for chopper operaion wihou phase reversal. This is he wors case, because full curren flows for he enire ime and swiching losses occur in addiion. P o = 2 P sa + P q + 2 P s where P sa I N { sai d + Fu (1 d) + sauc d + saud (1 d)} P q = I q S P S i q D DON ( i D + i R ) ON I N ( T DOFF + OFF ) I N = Nominal curren (mean value) I q = Quiescen curren i D = Reverse curren during urn-on delay i R = Peak reverse curren p = Conducing ime of chopper ransisor ON = Turn-ON ime OFF = Turn-OFF ime DON = Turn-ON delay DOFF = Turn-OFF delay T = Cycle duraion d = Duy cycle p / T sal = Sauraion volage of sink ransisor (TX3, TX4) sauc = Sauraion volage of source ransisor (TX1, TX2) during charge cycle saud = Sauraion volage of source ransisor (TX1, TX2) during discharge cycle Fu = Forward volage of free-wheeling diode (DX1, DX2) S = Supply volage Daa Shee ,

23 + S Tx1 Dx1 Dx2 Tx2 L Tx3 Dx3 Dx4 Tx4 C R sense AET2222 Figure 9 Turn-ON Turn-OFF olage and Curren on Chopper Transisor i D i R Ι N S + Fu S+ Fu sal D ON ON D OFF OFF P AET2223 Figure 1 olage and Curren on Chopper Transisor Daa Shee ,

24 Applicaion Hins The TLE4729G is inended o drive boh phases of a sepper moor. Special care has been aken o provide high efficiency, robusness and o minimize exernal componens. Power Supply The TLE4729G will work wih supply volages ranging from 5 o 16 a pin S. Surges exceeding 16 a S won harm he circui up o 45, bu whole funcion is no guaraneed. As soon as he volage drops below approximaely 16 he TLE4729G works promply again. As he circui operaes wih chopper regulaion of he curren, inerference generaion problems can arise in some applicaions. Therefore he power supply should be decoupled by a.1 µf ceramic capacior locaed near he package. Unsabilized supplies may even afford higher capaciies. Inhibi Mode In he case of low a all four curren program inpus IXX he device will swich ino inhibi condiion; he curren consumpion is reduced o very low values. When saring operaion again, i.e. puing a leas one IXX o high poenial, he Error 1 oupu signals an open load error if he corresponding phase inpu is high. The error is rese by firs recirculaion in chop mode. Curren Sensing The curren in he windings of he sepper moor is sensed by he volage drop across R sense. Depending on he seleced curren inernal comparaors will urn off he sink ransisor as soon as he volage drop reaches cerain hresholds (ypical,.7,.45 and.7 ). These hresholds are no affeced by variaions of S. Consequenly insabilized supplies will no affec he performance of he regulaion. For precise curren level i mus be considered, ha inernal bounding wire (yp. 6 mω) is a par of R sense. Due o chopper conrol fas curren rises (up o 1 A/µs) will occur a he sensing resisors. To preven malfuncion of he curren sensing mechanism R sense should be pure ohmic. The resisors should be wired o GND as direcly as possible. Capaciive loads such as long cables (wih high wire o wire capaciy) o he moor should be avoided for he same reason. Synchronizing Several Choppers In some applicaions synchrone chopping of several sepper moor drivers may be desirable o reduce acousic inerference. This can be done by forcing he oscillaor of he TLE4729G by a pulse generaor overdriving he oscillaor loading currens (approximaely ± 12 µa). In hese applicaions low level should be beween and.8 while high level should beween 3 and 5. Daa Shee ,

25 Applicaion Hins (con d) Opimizing Noise Immuniy Unused inpus should always be wired o proper volage levels in order o obain highes possible noise immuniy. To preven crossconducion of he oupu sages he TLE4729G uses a special break before make iming of he power ransisors. This iming circui can be riggered by shor gliches (some hundred nanoseconds) a he phase inpus causing he oupu sage o become high resisive during some microseconds. This will lead o a fas curren decay during ha ime. To achieve maximum curren accuracy such gliches a he phase inpus should be avoided by proper conrol signals. To lower EMI a ceramic capacior of max. 3 nf is advisable from each oupu o GND. Thermal Shu Down To proec he circui agains hermal desrucion, hermal shu down has been implemened. Error Monioring The error oupus signal corresponding o he logic able he errors described below. Logic Table Kind of Error Error Oupu Error 1 Error 2 a) No error H H b) Shor circui o GND H L c) Open load1) L H d) b) and c) simulaneously H L e) Temperaure prealarm L L 1) Also possible: shor circui o + S or shor circui of he load. Over-Temperaure is implemened as pre-alarm; i appears approximaely 2 K before hermal shu down. To deec an open load, he recirculaion of he inducive load is wached. If here is no recirculaion afer a phase change-over, an inernal error flipflop is se. Because in mos kinds of shor circuis here won flow any curren hrough he moor, here will be no recirculaion afer a phase change-over, and he error flipflop for open load will be se, oo. Addiionally an open load error is signaled afer a phase change-over during hold mode. Daa Shee ,

26 Only in he case of a shor circui o GND, he mos probably kind of a shor circui in auomoive applicaions, he malfuncion is signaled dominan (see d) in logic able) by a separae error flag. Simulaneously he oupu curren is disabled afer 3 µs o preven disurbances. A phase change-over or puing boh curren conrol inpus of he affeced bridge on low poenial reses he error flipflop. Being a separae flipflop for every bridge, he error can be locaed in easy way. Daa Shee ,

27 Package Oulines MAX. 1) x MAX ).2 24x ± Index Marking ) ) 2) Does no include plasic or meal prorusion of.15 max. per side Lead widh can be.61 max. in dambar area Figure 11 PG-DSO (Plasic Green Dual Small Ouline) Green Produc (RoHS complian) To mee he world-wide cusomer requiremens for environmenally friendly producs and o be complian wih governmen regulaions he device is available as a green produc. Green producs are RoHS-Complian (i.e Pb-free finish on leads and suiable for Pb-free soldering according o IPC/JEDEC J-STD-2). You can find all of our packages, sors of packing and ohers in our Infineon Inerne Page Producs : hp:// SMD = Surface Mouned Device Dimensions in mm Daa Shee ,

28 Revision Hisory ersion Dae Changes Rev RoHS-complian version of he TLE 4729 G All pages: Infineon logo updaed Page 2: added AEC qualified and RoHS logo, Green Produc (RoHS complian) and AEC qualified saemen added o feaure lis, package name changed o RoHS complian versions, package picure updaed, ordering code removed Page 27: Package name changed o RoHS complian versions, Green Produc descripion added added Revision Hisory added Legal Disclaimer Rev Updae Package suffix Daa Shee ,

29 Ediion 1.2, Published by Infineon Technologies AG Munich, Germany 28 Infineon Technologies AG All Righs Reserved. Legal Disclaimer The informaion given in his documen shall in no even be regarded as a guaranee of condiions or characerisics. Wih respec o any examples or hins given herein, any ypical values saed herein and/or any informaion regarding he applicaion of he device, Infineon Technologies hereby disclaims any and all warranies and liabiliies of any kind, including wihou limiaion, warranies of non-infringemen of inellecual propery righs of any hird pary. Informaion For furher informaion on echnology, delivery erms and condiions and prices, please conac he neares Infineon Technologies Office ( Warnings Due o echnical requiremens, componens may conain dangerous subsances. For informaion on he ypes in quesion, please conac he neares Infineon Technologies Office. Infineon Technologies componens may be used in life-suppor devices or sysems only wih he express wrien approval of Infineon 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. Life 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. If hey fail, i is reasonable o assume ha he healh of he user or oher persons may be endangered. Daa Shee ,

30 Mouser Elecronics Auhorized Disribuor Click o iew Pricing, Invenory, Delivery & Lifecycle Informaion: Infineon: TLE4729G

Type Ordering Code Package TLE 4729 G Q67006-A9225 P-DSO-24-3 (SMD)

Type Ordering Code Package TLE 4729 G Q67006-A9225 P-DSO-24-3 (SMD) 2-Phase Sepper-Moor Driver Bipolar-IC TE 4729 G Feaures 2.7 amp. full bridge oupus Inegraed driver, conrol logic and curren conrol (chopper) ery low curren consumpion in inhibi mode Fas free-wheeling diodes