Data Sheet, Rev. 3.4, August 2007 TLE 6711 G/GL. Multifunctional Voltage Regulator and Watchdog. Automotive Power

Transcription

1 Daa Shee, Rev. 3.4, Augus 2007 TLE 6711 G/GL Mulifuncional Volage Regulaor and Wachdog Auomoive Power

2 Mulifuncional Volage Regulaor and Wachdog TLE 6711 G TLE 6711 GL Feaures Sep up converer (Boos Volage) Boos Over- and Under-Volage-Lockou Sep down converer (Logic Volage) 2% oupu volage olerance Logic Over- and Under-Volage-Lockou Overemperaure Shudown Power ON/OFF rese generaor Digial window wachdog Sysem Enable Oupu Ambien operaion emperaure range -40 C o 125 C Wide Supply volage operaion range Very low curren consumpion Very small PG-DSO-14-1 SMD package Green Produc (RoHS Complian) AEC Qualified P/PG-DSO-14-3, -8, -9, -11, 14 Descripion The TLE 6711 G/GL is a mulifuncional power supply circui especially designed for auomoive applicaions. I delivers a programmable sep up volage (Boos) and a precise 5 V fully shor circui proeced oupu volage (Buck). P/PG-DSO-20-1, -6, -7, -9, -14, -15, -17, -18 The TLE 6711 G/GL conains a power on rese feaure o sar up he sysem, an inegraed digial window wachdog o monior he conneced microconroller and a sysem enable oupu o indicae he microconroller window wachdog fauls. The device is based on Infineon s power echnology SPT which allows bipolar and CMOS conrol circuiry o be inegraed wih DMOS power devices on he same monolihic circuiry. The very small PG-DSO-14-1 SMD packages mee he applicaion requiremens. Furhermore, he build-in feaures like under- and overvolage lockou for boos- and buck-volage and he overemperaure shudown feaure increase he reliabiliy of he TLE 6711 G/GL supply sysem. Type TLE 6711 G TLE 6711 GL Package PG-DSO-14-1 PG-DSO Daa Shee 2 Rev. 3.4,

3 Block Diagram 1 Block Diagram TLE 6711 G BOFB 12 Boos Converer BOI BO Biasing V REF V Boos 10 BDS BUC 6 Buck Converer 9 8 V BOOST BUO V Inernal 7 V CC 5 SEN R 1 Reference Curren Generaor and Oscillaor Rese, Window Wachdog and Sysem Enable 3 2 WDI RO 11 OVL 4 AEB02949 Figure 1 Block Diagram (pinning valid for PG-DSO-14-1) Daa Shee 3 Rev. 3.4,

4 Pin Configuraion 2 Pin Configuraion 2.1 Pin Assignmen R RO WDI SEN BUC V CC BOI BO BOFB OVL BDS V Boos BUO AEP02960 Figure 2 Pin Configuraion PG-DSO-14-1 (op view) R 1 20 BOI RO 2 19 BOFB WDI 3 18 OVL SEN 8 13 BDS BUC 9 12 V BOOST V CC BUO Figure 3 Pin Configuraion PG-DSO (op view) Daa Shee 4 Rev. 3.4,

5 Pin Configuraion 2.2 Pin Definiions and Funcions Pin SO-14 Pin SO-20 Symbol Funcion 1 1 R Reference Inpu; an exernal resisor from his pin o deermines he reference curren and he oscillaor frequency 2 2 RO Rese Oupu; open drain oupu from rese comparaor wih an inernal pull-up resisor 3 3 WDI Wachdog Inpu; inpu for he wachdog conrol signal from he conroller 4 4, 5, 6, 7, 14, 15, 16, 17 Ground; analog signal ground 5 8 SEN Sysem Enable Oupu; open drain oupu from Wachdog fail-circui wih an inernal pull-up resisor 6 9 BUC Buck-Converer Compensaion Inpu; oupu of inernal error amplifier; for loop-compensaion connec an exernal R-C-series combinaion o 7 10 V CC Supply Volage Oupu; buck converer oupu; exernal blocking capacior necessary 8 11 BUO Buck Converer Oupu; source of he inegraed power-dmos 9 12 V BOOST Boos Converer Inpu; inpu supply volage of he IC; coming from he boos converer oupu volage; buck converer inpu volage BDS Buck Driver Supply Inpu; volage o drive he buck converer powersage OVL Boos Saus Oupu; open drain oupu from boos PWM comparaor BOFB Boos Converer Feedback Inpu; connec boos volage divider o his pin; inernal reference is he boos feedback hreshold V BOFBTH 13 BO Boos-Ground; power signal ground; source of boos converer power-dmos BOI Boos Converer Inpu; drain of he inegraed buck converer power-dmos Daa Shee 5 Rev. 3.4,

6 General Produc Characerisics 3 General Produc Characerisics 3.1 Absolue Maximum Raings Absolue Maximum Raings 1) T j = -40 C o +150 C; all volages wih respec o ground, posiive curren flowing ino pin (unless oherwise specified) Pos. Parameer Symbol Limi Values Uni Condiions Volages Boos inpu volage V BOI V Boos oupu volage V BOOST V Boos feedback volage V BOFB V Buck oupu volage V BUO V Buck driver supply volage V BDS V 0 C < T j 150 C V -40 C T j 0 C 1) No subjec o producion es, specified by design. Min. Max Buck compensaion inpu volage V BUC V Logic supply volage V CC V Rese oupu volage V RO V Sysem Enable oupu volage V SEN V Curren reference volage V R V Wachdog inpu volage V WDI V OVL oupu volage V OVL V Temperaures Juncion Temperaure T j C Sorage Temperaure T sg C ESD Suscepibiliy All pins o V HBM -2 2 kv Human Body Model; R = 1.5 kω; C = 100 pf Aenion: Sresses above he ones lised here may cause permanen damage o he device. Exposure o absolue maximum raing condiions for exended periods may affec device reliabiliy. Aenion: Inegraed proecion funcions are designed o preven IC 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. Daa Shee 6 Rev. 3.4,

7 General Produc Characerisics 3.2 Operaing Range Pos. Parameer Symbol Limi Values Uni Condiions Boos inpu volage V BOI V Boos inpu volage; V BOOST 5 35 V V BOOST increasing (normal operaion) Boos inpu volage; (normal operaion) V BOOST V V BOOST decreasing Boos inpu volage V BOOST V Boos- and Buck- Converer OFF Boos feedback volage V BOFB V Buck oupu volage V BUO V Buck driver supply volage V BDS V 0 C < T j 150 C V -40 C T j 0 C Min. Max Buck compensaion inpu volage V BUC V Logic supply volage V CC V Rese oupu volage V RO -0.3 V CC V Sysem Enable oupu volage V SEN -0.3 V CC V Wachdog inpu volage V WDI 0 V CC V Curren reference volage V R V Juncion emperaure T j C Thermal Resisance Juncion ambien PG-DSO Juncion ambien PG-DSO R hj-a 120 K/W R hj-a 65 K/W Noe: In he operaing range, he funcions given in he circui descripion are fulfilled. Daa Shee 7 Rev. 3.4,

8 Circui Descripion 4 Circui Descripion Below some imporan secions of he TLE 6711 G/GL are described in more deail. 4.1 Power On Rese In order o avoid any sysem failure, a sequence of several condiions has o be passed. In case of V CC power down (V CC < V RT for > RR ) a logic LOW signal is generaed a he pin RO o rese an exernal microconroller. When he level of V CC reaches he rese hreshold V RT, he signal a RO remains LOW for he Power-up rese delay ime RD before swiching o HIGH. If V CC drops below he rese hreshold V RT for a ime exending he rese reacion ime RR, he rese circui is acivaed and a power down sequence of period RD is iniiaed. The rese reacion ime RR avoids wrong riggering caused by shor gliches on he V CC -line. V CC < RR < RD V RT yp V 1 V Sar-Up ON Delay ON Delay Sared RO H L Invalid RD RR Invalid ON Delay Sopped Invalid RD Power Sar-Up Normal Failed N Failed Normal AET02950 Figure 4 Rese Funcion 4.2 Wachdog Operaion The wachdog uses one hundred of he oscillaor s clock signal period as a imebase, defined as he wachdog cycle ime CYL. Afer power-on, he rese oupu signal a he RO pin (microconroller rese) is kep LOW for he rese delay ime RD, i.e. 64 cycles. Wih he LOW o HIGH ransiion of he signal a RO he device sars he closed window ime CW = 32 cycles. A rigger signal wihin his window is inerpreed as a prerigger failure according o he figures shown below. Afer he closed window he open window wih he duraion OW is sared. The open window lass a minimum unil he rigger process has occurred, a maximum OW is 32 cycles. A HIGH o LOW ransiion of he wachdog rigger signal on pin WDI is aken by a rigger. To avoid wrong riggering due o parasiic gliches wo HIGH samples followed by wo LOW samples (sample period CYL ) are decoded as a valid rigger. If a rigger signal appears a he wachdog inpu pin WDI during he open window or a power up/down occurs, he wachdog window signal is rese and a new closed window follows. A rese is generaed (RO goes LOW) if here is no rigger pulse during he open window or if a prerigger occurs during he closed window. This rese happens afer 64 cycles afer he laes valid closed window sar ime and lass for furher 64 cycles. The riggering is correc also, if he firs hree samples (wo HIGH one LOW) of he rigger pulse a pin WDI are inside he closed window and only he fourh sample (he second LOW sample) is aken in he open window. In addiion o he microconroller rese signal RO he device generaes a sysem enable signal a pin SEN. If RO Daa Shee 8 Rev. 3.4,

9 Circui Descripion is HIGH he sysem enable goes acive HIGH wih he firs valid wachdog rigger pulse a pin WDI. The SEN oupu goes LOW immediaely if a prerigger, a missing rigger or a power down rese occurs. T WD = 128* CYL SR = 64* CYL WDR = 64* CYL CW =32* CYL OW =32* CYL definiion closed window open window definiion wors case f OSC =f OSCmax f OSC =f OSCmin rese sar delay ime afer window wachdog imeou ECW (CW+OW)min = ( CW + OW ) (1 - ) CWmax = CW (1+ ) WD OWmin rese duraion ime afer window wachdog ime-ou EOW = end of open window Example wih: CYL =1ms =10% (oscillaor deviaion) (CW+OW)min =( CW + OW )*(1- )= =(32+32)x0,9= 57,6ms CWmax = CW (1+ )=32*1,1=35,2ms Figure 5 Window Wachdog Definiions 1 Closed window Open window Wachdog rigger signal Open window Closed window WDI WDI WDI Valid Indifferen No valid ECW EOW = Wachdog decoder sample poin AET02952 Figure 6 Window Wachdog Definiions 2 Daa Shee 9 Rev. 3.4,

10 Circui Descripion a) Perfec Triggering afer Power on Rese V CC V RT RO RD = 64 Cycles WDWI WDI SEN b) Incorrec Triggering = 64 Cycles RO SR = 64 Cycles Sysem Failed Sysem Enable Sysem Failed WDR 32 Cycles CW OW CW OW CW CW 32 Cycles xx xx xx SR xx 1 = 64 Cycles xx xx 2 3 WDWI = 128 Cycles T WD CW OW CW OW CW OW CW OW WDI xx x 32 Cycles xx x xx SEN xx x xx 1) 2) 3) x xx 4) 1) Prerigger 2) Incorrec rigger duraion wihin wachdog open window OW: HIGH < 2 Cycles 3) Incorrec rigger duraion wihin wachdog open window OW: LOW < 2 Cycles 4) Missing rigger Legend: WDWI = Inernal Wachdog Window OW = Open Window (rigger signal a WDI) CW = Closed Window (rigger signal a WDI) x = Sample Poin AED02945 Figure 7 Window Wachdog Funcion Daa Shee 10 Rev. 3.4,

11 Circui Descripion 4.3 Boos Converer The TLE 6711 G/GL conains a fully inegraed boos converer (excep he boos-diode), which provides a supply volage for an energy reserve e.g. an airbag firing sysem. The regulaed boos oupu volage V BOOST is programmable by a divider nework (exernal resisors) providing he feedback volage for he boos feedback pin BOFB. The energy which is sored in he exernal elecrolyic capacior a V BOOST guaranees accurae airbag firing, even if he baery is disconneced by a car crash. The boos inducance L BO (yp. 100 µh) is PWM-swiched by an inegraed curren limied power DMOS ransisor wih a programmable (exernal resisor R R ) frequency. An inernal bandgap reference provides a emperaure independen, on chip rimmed reference volage for he regulaion loop. An error amplifier compares he reference volage wih he boos feedback signal V BOFB from he exernal divider nework (deerminaion of he oupu boos volage V BOOST ). Applicaion noe for programming he oupu volage a pin V BOOST : ( R V BOOST V BO1 + R BO2 ) = BOFBTH R BO2 (1) Wih a PWM (Pulse Widh Modulaion) comparaor he oupu of he error amplifier is compared o a periodic linear ramp, provided by a sawooh signal of he oscillaor conneced o pin R. A logic signal wih variable pulse widh is generaed. I passes hrough he logic circuis (ses he oupu lach PWM-FF) and driver circuis o he power swiching DMOS. The Schmi-rigger oupu reses he oupu flip-flop PWM-FF by NOR 2. The PWM signal is gaed by he NAND 2 o guaranee a dominan rese. V Boos V huv 4 V = = I Pullup 10 µa BOFB Pin 12 VREF = 2.8 V OV COMP - + VhOV 38 V UV COMP + - Error AMP + - L when NAND 3 OV a V Boos & L when T j > 175 C H when V Boos < 4 V H when Overcurren H when T j > 175 C or OV a VBoos NOR 1 1 L when Error NAND1 & S Error-FF R & Q & Q H when Error Error-Signal Error-Ramp Error Gae NOR 2 1 PWM COMP + - NAND 2 & S H when Error-Signal < Error-Ramp PWM-FF INV H = R & Q OFF 1 & Q OC COMP + - H = ON Gae Driver = V hoc 18 mv BOI Pin 14 Power D-MOS R Sense 14.5 m Ω BO Pin 13 R Pin 1 Oscillaor V max V min r f r Ramp Schmi-rigger 1 V high V low r f r Clock Unlock Deecor H when Oupucurren > 1.2 A OVL Boos Saus Pin 11 Low if Baery Disconneced AEB02946 Figure 8 Boos Converer Block Diagram Figure 8 shows he mos imporan waveforms during operaion; for low, medium and high loads up o overload condiion. The oupu ransisor is swiched off immediaely if he overcurren comparaor deecs an overcurren level a he power DMOS or if he sense oupu swiches o low induced by a V BOOST undervolage command. Daa Shee 11 Rev. 3.4,

12 Circui Descripion The TLE 6711 G/GL is also proeced agains several boos loop errors: In case of a feedback inerrupion a pull-up curren source (I FB yp. 0.4 µa), inegraed a pin BOFB pulls he volage a he feedback pin BOFB above he reference volage. The boos oupu is swiched off by he high error volage which conrols he PWM-Comparaor a a zero duy cycle. In he case of a resisive loop error caused by leakage currens o ground, he boos oupu volage would increase o very high values. In order o proec he V BOOST inpu as well as he exernal load agains caasrophic failures, an overvolage proecion is provided which swiches he oupu ransisor off as soon as he volage a pin V BOOST exceeds he inernal fixed overvolage hreshold V BOOVOFF = yp. 37 V. Applicaion Noe A shor circui from V BOOST o ground will no desroy he IC, however, i may damage he exernal boos diode or he boos inducance if here is no overcurren limiaion in ha pah. V C V and Error Error Volage V CP V CV OCLK H L PWM H L I BOI I BOLI I DBO V BOI V BOOST V S Overcurren Threshold Exceeded Load-Curren Increasing wih Time; Conrolled by he Conrolled by he Error Amp Overcurren Comp AED02672 Figure 9 Mos Imporan Waveforms of he Boos Converer Circui Daa Shee 12 Rev. 3.4,

13 Circui Descripion Boos Saus Oupu OVL For supervision of he Boos oupu volage an open drain DMOS oupu is used. The oupu is high impedance in normal operaion and low during he warning. The OVL goes LOW if he PWM comparaor oupu (see Figure 8) remains HIGH for clock ime period. This occurs when he Error-Signal falls below he minimum value of he Error-Ramp, his mean ha Boos volage falls below a cerain hreshold volage. The OVL oupu used as a warning for insufficien Boos volage. 4.4 Buck Converer A sabilized logic supply volage (yp. 5 V) for general purpose is realized in he sysem by a buck converer. An exernal buck-inducance L BU is PWM swiched by a high side DMOS power ransisor wih he programmed frequency (pin R). The buck regulaor supply is given by he boos converer oupu V BOOST, in case of a baery power-down he sored energy of he boos converer capacior is used. Like he boos converer, he buck converer uses he emperaure compensaed bandgap reference volage (yp. 2.8 V) for is regulaion loop. This reference volage is conneced o he non-invering inpu of he error amplifier and an inernal volage divider supplies he invering inpu. Therefore he oupu volage V CC is fixed due o he inernal resisor raio o yp. 5.0 V. The oupu of he error amplifier goes o he invering inpu of he PWM comparaor as well as o he buck compensaion oupu BUC. When he error amplifier oupu volage exceeds he sawooh volage he oupu power MOS-ransisor is swiched on. So he duraion of he oupu ransisor conducion phase depends on he V CC level. A logic signal PWM wih variable pulse widh is generaed. V CC BUC Pin 6 V CC Pin 7 V CC RVCC1 22kΩ R Pro1 200 Ω Error AMP RVCC2 28kΩ = VREF 2.8 V - + Error- Signal Error- Ramp R VCC3 39.7k Ω + - RVCC4 10.3kΩ = VhOV 1.2 V PWM COMP + - H when Error-Signal < Error-Ramp OV COMP L when T j > 175 C H when OV a V CC L when Overcurren Oupu Sage OFF when H H when UV a VBoos NOR 1 1 Error-FF R & Q OFF when H UV COMP + - V huv = 4 V NAND 2 & S PWM-FF R & Q & L when Overcurren Q OC COMP + - H = INV H = OFF 1 ON = V hoc 18 mv Boos Driver Supply Gae Driver V Boos Pin 9 R 18 Sense mω BDS Pin 10 Power D-MOS BUO Pin 8 R Pin 1 Oscillaor Schmi-rigger 1 V max V min r f r Ramp V high V low r f r Clock S & Q AEB02947 Figure 10 Buck Converer Block Diagram Daa Shee 13 Rev. 3.4,

14 Circui Descripion Exernal loop compensaion is required for converer sabiliy, and is formed by connecing a compensaion resisor-capacior series-nework (R BUC, C BUC ) beween pin BUC and. In he case of overload or shor-circui a V CC (he oupu curren exceeds he buck overcurren hreshold I BUOC ) he DMOS oupu ransisor is swiched off by he overcurren comparaor immediaely. The pulse widh is hen conrolled by he overcurren comparaor as seen before in he boos descripion. In order o proec he V CC inpu as well as he exernal load agains caasrophic failures, an overvolage proecion is provided which swiches he oupu ransisor off as soon as he volage a pin V CC exceeds he inernal fixed overvolage hreshold V BUOVOFF = yp. 6.0 V. V C V and Error Error Volage V CP V CV OCLK H L PWM H L I BUO I BULI I DBU V BUO V BOOST V CC5 Load-Curren Increasing wih Time; Conrolled by he Error Amp Overcurren Threshold Exceeded Conrolled by he Overcurren Comp AED02673 Figure 11 Mos Imporan Waveforms of he Buck Converer Circui Daa Shee 14 Rev. 3.4,

15 Circui Descripion 4.5 Elecrical Characerisics Noe: The lised characerisics are ensured over he operaing range of he inegraed circui. Typical characerisics specify mean values expeced over he producion spread. If no oherwise specified, ypical characerisics apply a T A = 25 C and he given supply volage. Elecrical Characerisics: Curren Consumpion V CC = 4.75 V o 5.25 V; V Boos = 8 V o 35 V, T j = -40 C o +150 C, R R = 47 kω; all volages wih respec o ground, posiive curren flowing ino pin (unless oherwise specified) Pos. Parameer Symbol Limi Values Uni Condiions Min. Typ. Max Curren consumpion; see applicaion circui Curren consumpion; see applicaion circui I Boos ma I CC = 0 ma; I BoLoad = 0 ma I Boos 5 10 ma I CC = 200 ma; I BoLoad = 50 ma Elecrical Characerisics: Under- and Over-Volage Lockou a V BOOST V CC = 4.75 V o 5.25 V; V Boos = 8 V o 35 V, T j = -40 C o +150 C, R R = 47 kω; all volages wih respec o ground, posiive curren flowing ino pin (unless oherwise specified) Pos. Parameer Symbol Limi Values Uni Condiions Min. Typ. Max UV ON volage; boos and buck conv. ON UV OFF volage; boos and buck conv. OFF V BOUVON V V BOOST increasing V BOUVOFF V V BOOST decreasing UV Hyseresis volage V BOUVHY V HY = ON - OFF OV OFF volage; boos conv. OFF V BOOVOFF V V BOOST increasing OV ON volage; boos conv. ON V BOOVON V V BOOST decreasing OV Hyseresis volage V BOUVHY V HY = OFF - ON Elecrical Characerisics: Over-Volage Lockou a V CC V CC = 4.75 V o 5.25 V; V Boos = 8 V o 35 V, T j = -40 C o +150 C, R R = 47 kω; all volages wih respec o ground, posiive curren flowing ino pin (unless oherwise specified) Pos. Parameer Symbol Limi Values Uni Condiions Min. Typ. Max OV OFF volage; buck conv. OFF V BUOVOFF V V CC increasing OV ON volage; buck conv. ON V BUOVON V V CC decreasing OV Hyseresis volage V BUOVHY V HY = OFF - ON Daa Shee 15 Rev. 3.4,

16 Circui Descripion Elecrical Characerisics: Boos-Converer; BOI, BOFB and V BOOST V CC = 4.75 V o 5.25 V; V Boos = 8 V o 35 V, T j = -40 C o +150 C, R R = 47 kω; all volages wih respec o ground, posiive curren flowing ino pin (unless oherwise specified) Pos. Parameer Symbol Limi Values Uni Condiions Boos volage; see applicaion circui Boos Volage; see applicaion circui Min. Typ. Max. V BOOST V 5 ma < I BOOST < 100 ma; T j = 25 C; 8 V < V Ba < 16 V V BOOST V 5 ma < I BOOST < 100 ma; 8 V < V Ba < 16 V Efficiency; see. appl. circui η 80 % I BOOST = 100 ma Power-Sage ON resisance R BOON Ω T j = 25 C; I BOI = 1 A Power-Sage ON resisance R BOON 1.4 Ω I BOI = 1 A Boos overcurren hreshold I BOOC A Feedback hreshold volage V BOFBTH V V BOI = 12 V; I BOOST = 25 ma Feedback inpu curren I FB µa 2 V < V BOFB < 4 V Elecrical Characerisics: Buck-Converer; BUO, BDS, BUC and V CC V CC = 4.75 V o 5.25 V; V Boos = 8 V o 35 V, T j = -40 C o +150 C, R R = 47 kω; all volages wih respec o ground, posiive curren flowing ino pin (unless oherwise specified) Pos. Parameer Symbol Limi Values Uni Condiions Min. Typ. Max Logic supply volage V CC V 1 ma < I CC < 250 ma; see. appl. circui Efficiency; see. appl. circui η 85 % I CC = 250 ma; V Boos = 25 V Power-Sage ON resisance R BUON Ω T j = 25 C; I BUO = 1 A Power-Sage ON resisance R BUON 1.0 Ω I BUO = 1 A Buck overcurren hreshold I BUOC A Inpu curren on pin V CC I CC ma V CC = 5 V Buck Gae supply volage; V BGS = V BDS - V BOOST V BGS 5 10 V Daa Shee 16 Rev. 3.4,

17 Circui Descripion Elecrical Characerisics: Reference Inpu; R (Oscillaor; Timebase for Boos- and Buck-Converer, Rese and Wachdog) V CC = 4.75 V o 5.25 V; V Boos = 8 V o 35 V, T j = -40 C o +150 C, R R = 47 kω; all volages wih respec o ground, posiive curren flowing ino pin (unless oherwise specified) Pos. Parameer Symbol Limi Values Uni Condiions Min. Typ. Max Volage on pin R V R V Oscillaor frequency f OSC khz T j = 25 C Oscillaor frequency f OSC khz Cycle ime for wachdog and rese CYL 1.05 ms CYL = 100/f OSC iming Elecrical Characerisics: Rese Generaor; RO V CC = 4.75 V o 5.25 V; V Boos = 8 V o 35 V, T j = -40 C o +150 C, R R = 47 kω; all volages wih respec o ground, posiive curren flowing ino pin (unless oherwise specified) Pos. Parameer Symbol Limi Values Uni Condiions Rese hreshold; V CC decreasing/increasing Min. Typ. Max. V RT V V RO H o L or L o H ransiion; V RO remains low down o V CC > 1 V Rese low volage V ROL V I ROL = 2 ma; 2.5 V < V CC < V RT Rese low volage V ROL V I ROL = 0.2 ma; 1 V < V CC < V RT V I ROH = 0 ma Rese high volage V ROH V CC V CC Rese pull-up curren I RO 240 µa 0 V < V RO < 4 V Rese Reacion ime RR µs V CC < V RT Power-up rese delay ime RD 64 CYL V CC 4.8 V Elecrical Characerisics: Wachdog Generaor; WDI V CC = 4.75 V o 5.25 V; V Boos = 8 V o 35 V, T j = -40 C o +150 C, R R = 47 kω; all volages wih respec o ground, posiive curren flowing ino pin (unless oherwise specified) Pos. Parameer Symbol Limi Values Uni Condiions Min. Typ. Max H-inpu volage hreshold V WDIH 0.7 V CC V L-inpu volage hreshold V WDIL 0.3 V CC V Wachdog period T WD 128 CYL V CC 4.8 V Sar of rese; SR 64 CYL V CC 4.8 V afer wachdog ime-ou Daa Shee 17 Rev. 3.4,

18 Circui Descripion Elecrical Characerisics: Wachdog Generaor; WDI (con d) V CC = 4.75 V o 5.25 V; V Boos = 8 V o 35 V, T j = -40 C o +150 C, R R = 47 kω; all volages wih respec o ground, posiive curren flowing ino pin (unless oherwise specified) Pos. Parameer Symbol Limi Values Uni Condiions Min. Typ. Max Rese duraion; afer wachdog ime-ou WDR 64 CYL V CC 4.8 V Open window ime OW 32 CYL V CC 4.8 V Closed window ime CW 32 CYL V CC 4.8 V Window wachdog rigger ime WD 46.4 CYL V CC 4.8 V Elecrical Characerisics: Sysem Enable Oupu; SEN V CC = 4.75 V o 5.25 V; V Boos = 8 V o 35 V, T j = -40 C o +150 C, R R = 47 kω; all volages wih respec o ground, posiive curren flowing ino pin (unless oherwise specified) Pos. Parameer Symbol Limi Values Uni Condiions Min. Typ. Max Enable low volage V SENL V I SENL = 2 ma; 2.5 V < V CC < V RT Enable low volage V SENL V I SENL = 0.2 ma; 1 V < V CC < V RT V I SENH = 0 ma Enable high volage V SENH V CC V CC Enable pull-up curren I SEN 240 µa 0 V < V SEN < 4 V Elecrical Characerisics: Boos Saus Oupu; OVL V CC = 4.75 V o 5.25 V; V Boos = 8 V o 35 V, T j = -40 C o +150 C, R R = 47 kω; all volages wih respec o ground, posiive curren flowing ino pin (unless oherwise specified) Pos. Parameer Symbol Limi Values Uni Condiions Min. Typ. Max Enable low volage V OVLL V I OVLL = 1 ma; 2.5 V < V CC < V RT Boos feedback hreshold volage V OVLTH V See applicaion circui Elecrical Characerisics: Thermal Shudown (Boos and Buck-Converer OFF) V CC = 4.75 V o 5.25 V; V Boos = 8 V o 35 V, T j = -40 C o +150 C, R R = 47 kω; all volages wih respec o ground, posiive curren flowing ino pin (unless oherwise specified) Pos. Parameer Symbol Limi Values Uni Condiions Thermal shudown juncion emperaure Thermal swich-on juncion emperaure Min. Typ. Max. T jsd C T jso C Temperaure hyseresis T 30 K Daa Shee 18 Rev. 3.4,

19 Applicaion Informaion 5 Applicaion Informaion Noe: The following informaion is given as a hin for he implemenaion of he device only and shall no be regarded as a descripion or warrany of a cerain funcionaliy, condiion or qualiy of he device. Figure 12 shows he applicaion circui of he TLE 6711 G/GL wih he suggesed exernal pars. L BO D 1 D µh D BO I BOLoad V Ba CL 10 µf TLE 6711 G ZD1 36 V BOFB 12 CS 220 nf 14 BOI C BO1 10 nf R BO1 100 kω R BO2 10 kω C BO µf CBO2 220 nf V BOOST Boos Converer 13 BO Biasing V REF V Boos 10 BDS C BOT 10 nf 9 V BOOST BUC 6 Buck Converer 8 BUO L BU 220 µh R BUC 47 kω C BUC 470 nf R R R 47 kω 1 V Inernal Reference Curren Generaor and Oscillaor 4 Rese Window Wachdog and Sysem Enable 7 VCC 5 SEN WDI RO OVL Device Type D BU 10 kω C BU1 100 µf Supplier Remarks CBU2 220 nf V CC Sysem Enable Oupu Wachdog Trigger Inpu Rese Oupu Boos Saus Oupu D 1 D 2 D BO D BO D BU L BO L BO L BU L BU BAW78C BAW78C BAW78B SS14 - B82442-H1224 EPCOS Infineon 200 V; 1 A; SOT-89 Infineon 200 V; 1 A; SOT-89 Infineon 100 V; 1 A; SOT-89 muliple - Schoky; 40 V; 1 A Schoky; 100 V; 1 A B82442-A1104 EPCOS 100 µh; 0.25 A; 1.28 Ω Do3316P-104 Coilcraf 100 µh; 1.2 A; 0.28 Ω 220 µh; 0.24 A; 2.72 Ω Do3316P-224 Coilcraf 220 µh; 0.8 A; 0.61 Ω AEB02948 Figure 12 Applicaion Circui (pinning valid for PG-DSO-14-1) Daa Shee 19 Rev. 3.4,

20 Diagrams: Oscillaor and Boos/Buck-Converer Performance 6 Diagrams: Oscillaor and Boos/Buck-Converer Performance In he following he behaviour of he Boos/Buck-converer and he oscillaor is shown. Oscillaor Frequency Deviaion vs. Juncion Temperaure Boos Feedback Curren vs. Juncion Temperaure f OSC 10 khz AED02938 I FB -200 na AED Referred o f OSC a T = 25 C j C 150 T j C 150 T j Curren Consumpion vs. Juncion Temperaure Efficiency Buck vs. Load I Boos 3 ma AED02940 η 90 % AED Boos ON Buck ON I BO boos = 0 ma I CC = 0 ma RT, HT CT C 150 T j ma 250 I LOAD Daa Shee 20 Rev. 3.4,

21 Diagrams: Oscillaor and Boos/Buck-Converer Performance Efficiency Buck vs. Boos Volage Oscillaor Frequency vs. Resisor from R o η 95 % 90 V CC = 5 V AED khz f OSC 500 AED I Load = 120 ma j = 25 C ma ma V 30 V Boos kω 1000 R R Efficiency Boos vs. Inpu Volage Boos Oupu Volage vs. Load η 95 % I Boos = 60 ma AED02943 V Boos 31 V AED HT RT CT 29 RT HT CT V ma 100 V Ba I LOAD Daa Shee 21 Rev. 3.4,

22 Diagrams: Oscillaor and Boos/Buck-Converer Performance Boos and Logic Oupu Volage vs. Juncion Temperaure Boos and Buck Overcurren Threshold vs. Juncion Temperaure V Boos 30 V I Boos = 50 ma AED02983 I OC 1.4 A I BOOC (Boos-Converer) AED02985 V CC V = 250 ma I CC C 150 T j (Buck-Converer) I BUOC C 150 T j Boos and Buck ON Resisance vs. Juncion Temperaure 1000 mω R ON AED R I BOI = 1 A RBUON BUO = 1 A C 150 T j Daa Shee 22 Rev. 3.4,

23 Package Oulines 7 Package Oulines 0.35 x 45 ± (1.47) 1.75 MAX. 4 C 1) MAX ) M AB14x 8 B 6± ± M C 1 7 Index Marking 1) A 1) Does no include plasic or meal prorusion of 0.15 max. per side 2) Lead widh can be 0.61 max. in dambar area GPS01230 Dimensions in mm Figure 13 PG-DSO-14-1 (Plasic Dual Small Ouline Package) ) MAX x x ) 8 MAX x ± ) Index Marking 1) Does no include plasic or meal prorusion of 0.15 max. per side 2) Does no include dambar prorusion of 0.05 max. per side GPS05094 Dimensions in mm Figure 14 PG-DSO (Plasic Dual Small Ouline Package) 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-020). Daa Shee 23 Rev. 3.4,

24 Revision Hisory 8 Revision Hisory Revision Dae Changes Iniial version of RoHS-complian derivae of TLE Page 2: AEC cerified saemen added. Page 2 and Page 23: RoHS compliance saemen and Green produc feaure added. Page 2 and Page 23: Packages changed o RoHS complian version. Disclaimer updaed Page 9: Figure 5 correced, T WD = 128 CYL. Page 19: Figure 12 correced, Inducor ype EPCOS B82442-H1224. Daa Shee 24 Rev. 3.4,

25 Ediion Published by Infineon Technologies AG Munich, Germany 2007 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.