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automotive power datasheet rev. 1.0, 2009-11-30 TLE8386EL smart boost controller
datasheet 2 rev. 1.0, 2009-11-30 TLE8386EL table of contents 1 overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 3 pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.1 pin assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3.2 pin definitions and functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 4 general product characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4.1 absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 4.2 functional range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 4.3 thermal resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 5 boost regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 5.1 description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 5.2 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 6 oscillator and synchronization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 6.1 description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 6.2 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 7 enable function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 7.1 description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 7.2 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 8 linear regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 8.1 description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 8.2 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 9 protection and diagnostic functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 9.1 description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 9.2 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 10 package outlines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 11 application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 11.1 further application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 12 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 table of contents
pg-ssop-14 type package marking TLE8386EL pg-ssop-14 tle8386 datasheet 3 rev. 1.0, 2009-11-30 smart boost controller TLE8386EL 1overview features ? wide input voltage range from 4.75 v to 45 v ? constant current or constant voltage regulation ? very low shutdown current: iq< 10 a ? flexible switching frequency range, 100 khz to 500 khz ? synchronization with external clock source ? output open circuit diagnostic output ? available in a small thermally enhanced pg-ssop-14 package ? internal 5 v low drop out voltage regulator ? output overvoltage protection ? internal soft start ? over temperature shutdown ? automotive aec qualified ? green product (rohs) compliant description the TLE8386EL is a boost controller with built in protection and diagnostic features. the main function of this device is step-up (boost) an input voltage to a larger output voltage. the diagnostics are communicated on a status output (pin st) to indicate a fault conditions such as over temperature, open feedback and open load. the switching frequency is adjustable in the range of 100 khz to 500 khz and can be synchronized to an external clock source. the TLE8386EL features an enable function redu cing the shut-down current consumption to <10 a. the current mode regulation scheme of this device provides a stable regulation loop maintained by small external compensation components. the integrated soft-start feature limits the current peak as well as voltage overshoot at start-up. this ic is suited for us e in the harsh automotive environments and provides protec tion functions such as output overvoltage protection and overtemperature shutdown.
datasheet 4 rev. 1.0, 2009-11-30 TLE8386EL block diagram 2 block diagram figure 1 block diagram en comp in fbl fbh freq/ sync gnd st oscillator 14 13 10 8 11 12 3 9 6 7 swcs 4 swo 2 ivcc 1 diagnostics logic ldo ovfb sgnd soft start slope comp. internal supply on/off logic leading edge blanking en_int thermal protection open load detection over volage protection pwm generator power switch gate driver feedback voltage error amplifier power on reset blockdiagram.vsd switch current error amplifier
TLE8386EL pin configuration datasheet 5 rev. 1.0, 2009-11-30 3 pin configuration 3.1 pin assignment figure 2 pin configuration 3.2 pin definitions and functions pin symbol function 1ivcc internal ldo output; used for internal biasing and gate drive. bypass with external capacitor. do not leave pin ivcc open. 2swo switch output; connect to gate of external boost converter switching mosfet 3sgnd current sense ground; ground return for current sense switch 4swcs current sense input; detects the peak current through switch 5nc no connect; 6fbh voltage feedback positive; non inverting input (+) 7fbl voltage feedback negative; inverting input (-) 8comp compensation input; connect r and c networ k to pin for stability ,1 &203 29)% 67 )5(46<1& *1' (1 ,9&& )%/ 1& 6*1' 6:&6 6:2 slqfrqiljbvvrsvyj )%+
datasheet 6 rev. 1.0, 2009-11-30 TLE8386EL pin configuration 9ovfb output overvoltage protection feedback; connect to resistive voltage divi der to set overvoltage threshold. 10 st status output; open drain diagnostic output to indicate fault condition. connect pull up resistor to pin. 11 freq / sync frequency select or synchronization input; connect external resistor to gnd to set frequency. or apply external clock signal for synchronization within frequency capture range. 12 gnd ground; connect to system ground. 13 en enable; apply logic high signal to enable device. 14 in supply input; supply for internal biasing. exposed pad connect to gnd. pin symbol function
TLE8386EL general product characteristics datasheet 7 rev. 1.0, 2009-11-30 4 general product characteristics 4.1 absolute maximum ratings absolute maximum ratings 1) t j = -40 c to +150 c; all voltages with respect to ground, positive current flowing into pin (unless otherwise specified) pos. parameter symbol limit values unit conditions min. max. voltages 4.1.1 in supply input v in -0.3 45 v 4.1.2 en enable input v en -40 45 v 4.1.3 fbh-fbl; feedback error amp lifier differential v fbh -v fbl -5.5 5.5 v 4.1.4 fbh; feedback error amplifier positive input v fbh -0.3 45 v 4.1.5 fbl feedback error amplifier negative input v fbl -0.3 45 v 4.1.6 ovfb over voltage feedback input v ovp -0.3 5.5 v 4.1.7 -0.3 6.2 v t < 10s 4.1.8 swcs switch current sense input v swcs -0.3 5.5 v 4.1.9 -0.3 6.2 v t < 10s 4.1.10 swo switch gate drive output v swo -0.3 5.5 v 4.1.11 -0.3 6.2 v t < 10s 4.1.12 sgnd current sense switch gnd v sgnd -0.3 0.3 v 4.1.13 comp compensation input v comp -0.3 5.5 v 4.1.14 -0.3 6.2 v t < 10s 4.1.15 freq / sync; frequency and synchronization input v freq / sync -0.3 5.5 v 4.1.16 -0.3 6.2 v t < 10s 4.1.17 st v st -0.3 45 v 4.1.18 diagnostic status output i st -5 5 ma 4.1.19 ivcc internal linear voltage regulator output v ivcc -0.3 5.5 v 4.1.20 -0.3 6.2 v t < 10s temperatures 4.1.21 junction temperature t j -40 150 c? 4.1.22 storage temperature t stg -55 150 c?
datasheet 8 rev. 1.0, 2009-11-30 TLE8386EL general product characteristics note: stresses above the ones listed here may cause perm anent damage to the device. exposure to absolute maximum rating conditions for extended periods may affect device reliability. note: integrated protection functions are designed to prevent ic destruction under fault conditions described in the data sheet. fault conditions are considered as ?outside? normal operating range. protection functions are not designed for continuous repetitive operation. 4.2 functional range note: within the functional range the ic operates as de scribed in the circuit description. the electrical characteristics are specifi ed within the conditions given in the re lated electrical ch aracteristics table. 4.3 thermal resistance note: this thermal data was generated in accordance wit h jedec jesd51 standards. fo r more information, go to www.jedec.org . esd susceptibility 4.1.23 esd resistivity to gnd v esd,hbm -2 2 kv hbm 2) 4.1.24 esd resistivity to gnd v esd,cdm -500 500 v cdm 3) 4.1.25 esd resistivity pin 1, 7, 8, 14 (corner pins) to gnd v esd,cdm,c -750 750 v cdm 3) 1) not subject to production test, specified by design. 2) esd susceptibility, human body model ?hbm? according to eia/jesd 22-a114b 3) esd susceptibility, charged device model ?cdm? eia/jesd22-c101 or esda stm5.3.1 pos. parameter symbol limit values unit conditions min. max. 4.2.1 supply voltage input v in 4.75 45 v v ivcc > v ivcc,rth,d 4.2.2 feedback voltage input v fbh; v fbl 4.5 45 v ? 4.2.3 junction temperature t j -40 150 c? pos. parameter symbol limit values unit conditions min. typ. max. 4.3.1 junction to case 1) 1) not subject to production test, specified by design. r thjc ?10?k/w? 4.3.2 junction to ambient 1) 2) 2) specified r thja value is according to jedec 2s2p (jesd 51-7) + (jesd 51-5) and jedec 1s0p (jesd 51-3) + heatsink area at natural convection on fr4 board; r thja ?47?k/w2s2p 4.3.3 r thja ? 54 ? k/w 1s0p + 600 mm 2 4.3.4 r thja ? 64 ? k/w 1s0p + 300 mm 2 absolute maximum ratings 1) t j = -40 c to +150 c; all voltages with respect to ground, positive current flowing into pin (unless otherwise specified) pos. parameter symbol limit values unit conditions min. max.
TLE8386EL boost regulator datasheet 9 rev. 1.0, 2009-11-30 5 boost regulator 5.1 description the TLE8386EL boost (step-up) regulator provides a higher output voltage th an input voltage. the boost regulator function is implemented by a pulse width modulated (pwm) current mode controller. the pwm current mode controller uses the peak current through the external power switch and error in the output current to determine the appropriate pulse width duty cycle (on ti me) for constant output cu rrent. the current mode controller it provides a pwm signal to an internal gate driver which then outputs the same pwm signal to external n-channel enhancement mode metal oxide field effect transistor (mosfet) power switch. the current mode controller also has built-in slope compensatio n to prevent sub-harmo nic oscillations which is a ch aracteristic of current mode controllers operating at high duty cycles (>50% duty). an additional built-in feature is an integrated soft start that limits the current through the inductor and external pow er switch during initializat ion. the soft start function gradually increases the inductor and switch current over 1 ms (typical) to minimize potential overvoltage at the output. figure 3 boost regulator block diagram oscillator freq/ sync & & r q s off when h q clock > 1 _ error -ff l when t j > 175 c ea fbh comp h when ovfb >1.25 v output stage off when l nor & nand 2 & & r q s q pwm-ff 1 inv gate driver gate driver supply swo ivcc current sense i soft start v ref 0.3 v = slope comp t fbl x1 gmea v ref 1.25 v = sgnd swcs current comp ovfb i sl o p e i ea i cs h when l ea -i slope -i cs >0 v ref 4.0 v = h when ivcc <4.0v uv ivcc ov fb
datasheet 10 rev. 1.0, 2009-11-30 TLE8386EL boost regulator 5.2 electrical characteristics 1) v in = 6v to 40v; 4.5v v fbh 40v, 4.5v v fbl 40v, t j = -40 c to +150 c, all voltages with respect to ground, positive current flowing into pin; (unless otherwise specified) pos. parameter symbol limit values unit conditions min. typ. max. boost regulator: 5.2.1 feedback reference voltage v ref 0.28 0.30 0.32 v v in = 19 v; v ref = v fbh -v fbl 5.2.2 voltage line regulation ? v ref / ? v in ? ? 0.15 %/v v in = 6 to 19 v; v bo = 30 v; i bo = 100 ma figure 13 5.2.3 voltage load regulation ? v ref / ? i bo ??5%/a v in = 19 v; v bo = 30v; i bo = 100 to 500 ma figure 13 5.2.4 switch peak over current threshold v swcs 130 150 170 mv v in = 6 v v fbh = v fbl = 5 v v comp = 3.5v 5.2.5 maximum duty cycle d max,fixed 90 93 95 % fixed frequency mode 5.2.6 maximum duty cycle d max,sync 88 ? ? % synchronization mode 5.2.7 soft start ramp t ss 350 1000 1500 s v fb rising from 5% to 95% of v fb , typ. 5.2.8 feedback input current i fbx -10 -50 -100 a v fbh - v fbl = 0.3 v 5.2.9 switch current sense input current i swcs 10 50 100 a v swcs = 150 mv 5.2.10 input undervoltage shutdown v in,off 3.75 ? ? v v in decreasing 5.2.11 input voltage startup v in,on ??4.75v v in increasing gate driver for boost switch 5.2.12 gate driver peak sourcing current 1) i swo,src ?380?ma v swo = 3.5v 5.2.13 gate driver peak sinking current 1) i swo,snk ?550?ma v swo = 1.5v 5.2.14 gate driver output rise time t r,swo ? 3060ns c l,swo = 3.3nf; v swo = 1v to 4v 5.2.15 gate driver output fall time t f,swo ? 2040ns c l,swo = 3.3nf; v swo = 1v to 4v 5.2.16 gate driver output voltage 1) v swo 4.5 ? 5.5 v c l,swo = 3.3nf; 1) not subject to production test, specified by design
TLE8386EL oscillator and synchronization datasheet 11 rev. 1.0, 2009-11-30 6 oscillator and synchronization 6.1 description r_osc vs. switching frequency the internal oscillator is used to dete rmine the switching frequency of the b oost regulator. the switching frequency can be selected from 100 khz to 500 khz with an external resistor to gnd. to set the switching frequency with an external resistor the following formula can be applied. in addition, the oscillator is capable of changing from the frequency set by th e external resistor to a synchronized frequency from an external clock source. if an external cl ock source is provided on the pin freq/sync, then the internal oscillator syn chronizes to this external clock frequency and the boost regulator switches at the synchronized frequency. the synchronization frequency capture range is 250 khz to 500 khz. figure 4 oscillator and synchronization block diagram and simplified application circuit figure 5 synchronization timing diagram tle8386 oscillator clock frequency detector freq / sync multiplexer pwm logic gate driver swo r freq v clk oscillator_ blkdiag.vsd 9 6<1& w w 6<1&75 w 6<1&75 9 6<1&+ 9 6<1&/ 7 6<1& i 6<1& w 6<1&3:+ 9 9 2vfloodwrub7lplqjvyj [] () [] () [] () [] ? ? ? = ? ? 3 1 12 10 5 . 3 10 141 1 s freq s f r freq
datasheet 12 rev. 1.0, 2009-11-30 TLE8386EL oscillator and synchronization 6.2 electrical characteristics v in = 6v to 40v; 4.5v v fbh 40v, 4.5v v fbl 40v, t j = -40 c to +150 c, all voltages with respect to ground, positive current flowing into pin; (unless otherwise specified) pos. parameter symbol limit values unit conditions min. typ. max. oscillator: 6.2.1 oscillator frequency f freq 250 300 350 khz r freq = 20k ? 6.2.2 oscillator frequency adjustment range f freq 100 ? 500 khz 17% internal tolerance + external resistor tolerance 6.2.3 freq / sync supply current i freq ??-700a v freq = 0 v 6.2.4 frequency voltage v freq 1.16 1.24 1.32 v f freq = 100 khz synchronization 6.2.5 synchronization frequency capture range f sync 250 ? 500 khz ? 6.2.6 synchronization signal high logic level valid v sync,h 3.0??v 1) 1) synchronization of external pwm on signal to falling edge 6.2.7 synchronization signal low logic level valid v sync,l ??0.8v 1) 6.2.8 synchronization signal logic high pulse width t sync,pwh 200 ? ? ns 1)
TLE8386EL oscillator and synchronization datasheet 13 rev. 1.0, 2009-11-30 typical performance characteristics of oscillator switching frequency f sw versus frequency select resistor to gnd r freq/sync 0 100 200 300 400 500 600 0 1020304050607080 r freq/sync [kohm] f freq [khz] t j = 25 c
datasheet 14 rev. 1.0, 2009-11-30 TLE8386EL enable function 7 enable function 7.1 description the enable function powers on or off the device. a valid l ogic low signal on enable pin en powers off the device and current consumption is less than 10 a. a valid logi c high enable signal on enable pin en powers on the device. the voltage at pin ivcc (internal biasing) stays present for the power off delay time after the the device is switched off by the enable signal. figure 6 timing diagram enable 9 (1 9 (121 9 ,9&& 9 ,9&&21 9 6:2 9 (12)) w (12))'(/ w w w 3rzhu2ii ,t ? $ 3rzhu2ii'hod\7lph 1rupdo 6:22q 3:022q (1b7lplqjvyj 3rzhu2q w (167$57 ? ?v
TLE8386EL enable function datasheet 15 rev. 1.0, 2009-11-30 7.2 electrical characteristics v in = 6v to 40v; 4.5v v fbh 40v, 4.5v v fbl 40v, t j = -40 c to +150 c, all voltages with respect to ground, positive current flowing into pin; (unless otherwise specified) pos. parameter symbol limit values unit conditions min. typ. max. enable input: 7.2.1 enable turn on threshold v en,on 3.0 ? v ? 7.2.2 enable turn off threshold v en,off ??0.8v? 7.2.3 enable hysteresis v en,hys 50 200 400 mv ? 7.2.4 enable high input current i en,h ??30a v en/pwmi = 16.0 v 7.2.5 enable low input current i en,l ?0.11a v en/pwmi = 0.5 v 7.2.6 enable turn off delay time t en,off,del 8 1012ms? 7.2.7 enable startup time t en,start 100 ? ? s ? current consumption 7.2.8 current consumption, shutdown mode i q_off ??10a v en/pwmi = 0.8 v; t j 105c; v in = 16v 7.2.9 current consumption, active mode 1) 1) dependency on switching frequency and gate charge of boost and dimming switch. i q_on ??7ma v en/pwmi 4.75 v; i bo = 0 ma; v in = 16v v swo = 0% duty
datasheet 16 rev. 1.0, 2009-11-30 TLE8386EL linear regulator 8 linear regulator 8.1 description the internal linear voltage regulator supplies the internal gate drivers with a typical voltage of 5 v and current up to 50 ma. an external output capacito r with low esr is required on pin ivcc for stability and buffering transient load currents. during normal operati on the external boost mosfet switche will draw transient currents from the linear regulator and its output capacitor. proper sizing of the output capacitor must be considered to supply sufficient peak current to the gate of the external mosfet switch. please refer to application section for recommendations on sizing the output capacitor. an integr ated power-on reset circuit monitors the linear regulator output voltage and resets the device in case the output voltage falls below the power-on reset threshold. the power-on reset helps protect the external switches from excessive power dissipation by ensuring the gate drive voltage is sufficient to enhance the gate of an external logic level n-channel mosfet. figure 7 voltage regulator block diagram and simplified application circuit 8.2 electrical characteristics v in = 6v to 40v; 4.5v v fbh 40v, 4.5v v fbl 40v, t j = -40 c to +150 c, all voltages with respect to ground, positive current flowing into pin; (unless otherwise specified) pos. parameter symbol limit values unit conditions min. typ. max. 8.2.1 output voltage v ivcc 4.6 5 5.4 v 6 v v in 45 v 0.1 ma i ivcc 50 ma 8.2.2 output current limitation i lim 51 90 ma v in = 13.5 v v ivcc = 4.5v 8.2.3 drop out voltage v dr 1400 mv i ivcc = 50ma 1) 1) measured when the output voltage v cc has dropped 100 mv from its nominal value. 8.2.4 output capacitor c ivcc 0.47 ? f 2) 2) minimum value given is needed for regulator stability; a pplication might need higher capacitance than the minimum. 8.2.5 output capacitor esr r ivcc,esr 0.5 ? f = 10khz 8.2.6 undervoltage reset headroom v ivcc,hdrm 100??mv v ivcc decreasing v ivcc - v ivcc,rth,d 8.2.7 undervoltage reset threshold v ivcc,rth,d 4.0??v v ivcc decreasing 8.2.8 undervoltage reset threshold v ivcc,rth,i ??4.5v v ivcc increasing (1 ,1 ,9&& /lqhdu5hjxodwru /lq5hjb%ofn'ldjvyj *dwh 'ulyhu
TLE8386EL protection and diagnostic functions datasheet 17 rev. 1.0, 2009-11-30 9 protection and diag nostic functions 9.1 description the TLE8386EL has integrated circuits to diagnose and protect against ou tput overvoltage, open load, open feedback and overtemperat ure faults. in case any of the four fault co nditions occur the status output st will output an active logic low signal to communicate that a fault has occurred. during an overvoltage or open load condition the gate driver outputs swo will turn off. figure 11 illustrates the various open load and open feedback conditions. in the event of an overtemperature condition the integrat ed thermal shutdown function turns off the gate drivers and internal linear voltage regulator. the typical junction shutdown temperature is 175c. after cooling down the ic will automatically restart operation. thermal shutdown is an in tegrated protection func tion designed to prevent immediate ic destruction and is not intended for continuous use in normal operation. figure 8 protection and diagnostic function block diagram figure 9 status output truth table protection and diagnostic circuit output overvoltage open load overtemperature or swo gate driver off input output pro_diag_blckdiag.vsd open feedback linear regulator off input undervoltage or overvoltage open load overtemperature l l pro_diag_tt .vsd level * true h sw* active l l h sw* l l shutdown h sw* *note: sw = switching false = condition does not exist true = condition does exist false true false true open feedback l l h sw* false true active active active active active active false st swo ivcc output input condition
datasheet 18 rev. 1.0, 2009-11-30 TLE8386EL protection and diagnostic functions figure 10 open load and open feedback conditions )%+ )%/ 29)% 7/( 5 29+ 5 29/ 5 )% 2yhuyrowdjh &rpsduwru )hhgedfn9rowdjh (uuru$psolilhu 9 %2 2shq&lufxlw 2shq&lufxlw 2shq&lufxlw 2shq&lufxlw 9 5() 9 29)%7+ 2shq&lufxlw &rqglwlrq )dxow&rqglwlrq 2shq)%+ 2shq)%/ 2shq9%2 2shq)%*1' )dxow7kuhvkrog9rowdjh 9 5() wrp9 wr9 9 )%[ 9 )%[0,1 9 'hwhfwhge\ryhuyrowdjh 9 5() 0lq7kuhvkrog 9 0d[7kuhvkrog p9 0d[7kuhvkrog 9 0lq7kuhvkrog p9 2shq)%/ 2shq)%+ 7\slfdo9 5() 9 2xwsxw2shq&lufxlw&rqglwlrqv 5 )% 5 )% 5 / 'ldj2shqvyj
TLE8386EL protection and diagnostic functions datasheet 19 rev. 1.0, 2009-11-30 figure 11 status output timing diagram 6kxwgrzq 1rupdo 7khupdo 6kxwgrzq 2yhuyrowdjh 2shq/rdg )hhgedfn 6wduwxs 9 ,9&& 9 )%+ 9 )%/ w 9 67 w 7 - w w 6' w 6' w 6' w 9 5() 9 5() 7 -6' 7 -6'+<67 9 ,9&&57+l 9 ,9&&57+g 97\s w 66 w 66 9 %2 w 9 29)% ?9 29)%7+ 9 29)% 9 29)%7/ 3urb'ldjb67b7lplqjvyj
datasheet 20 rev. 1.0, 2009-11-30 TLE8386EL protection and diagnostic functions 9.2 electrical characteristics note: integrated protection functions are designed to prevent ic destruction under fault conditions described in the data sheet. fault conditions are considered as ?outside? normal operating range. protection functions are not designed for continuous repetitive operation. v in = 6v to 40v; 4.5v v fbh 40v, 4.5v v fbl 40v, t j = -40 c to +150 c, all voltages with respect to ground, positive current flowing into pin; (unless otherwise specified) pos. parameter symbol limit values unit conditions min. typ. max. status output: 9.2.1 status output voltage low v st,low ??0.4v i st = 1ma 9.2.2 status sink current limit i st,max 2??ma v st = 1v 9.2.3 status output current i st,high ??1a v st = 5v 9.2.4 status delay time t sd 8 1012ms? temperature protection: 9.2.5 over temperature shutdown t j,sd 160 175 190 c ? 9.2.6 over temperature shutdown hystereses t j,sd,hyst ?15?c? overvoltage protection: 9.2.7 output over voltage feedback threshold increasing v ovfb,th 1.21 1.25 1.29 v ? 9.2.8 output over voltage feedback hysteresis v ovfb,hys 50 ? 150 mv output voltage decreasing 9.2.9 over voltage reaction time t ovprr 2 ? 10 s output voltage decreasing 9.2.10 over voltage feedback input current i ovfb -1 0.1 1 a v ovfb = 1.25 v open load and open feedback diagnostics 9.2.11 open load/feedback threshold v ref,1,3 -100 ? -20 mv v ref = v fbh - v fbl open circuit 1 or 3 9.2.12 open feedback threshold v ref,2 0.5?1v v ref = v fbh - v fbl open circuit 2
TLE8386EL package outlines datasheet 21 rev. 1.0, 2009-11-30 10 package outlines figure 12 pg-ssop-14 green product (rohs compliant) to meet the world-wide customer requirements for environmentally friendly products and to be compliant with government regulations the device is available as a green product. green products are rohs-compliant (i.e pb-free finish on leads and suitable for pb-free soldering according to ipc/jedec j-std-020). pg-ssop-14-1-po v01 1 7 14 8 14 17 8 14x 0.25 0.05 2) m 0.15 d c a-b 0.65 c stand off 0 ... 0.1 (1.45) 1.7 max. 0.08 c a b 4.9 0.1 1) a-b 0.1 2x 1) does not include plastic or metal protrusion of 0.15 max. per side 2) does not include dambar protrusion bottom view 0.1 3 0.1 2.65 0.2 0.2 d 6 m d8x 0.64 0.25 3.9 0.1 1) 0.35 x 45 0.1 d 2x +0.06 0.19 8 max. index marking exposed diepad for further package information, please visit our website: http://www.infineon.com/packages . dimensions in mm
datasheet 22 rev. 1.0, 2009-11-30 TLE8386EL application information 11 application information note: the following information is given as a hint for the implementation of the device only and shall not be regarded as a description or warranty of a certain functionality, condition or quality of the device. figure 13 boost voltage application circuit (voltage source) figure 14 bill of materials for boost voltage application circuit note: this is a simplified example of an application circuit. the function must be verified in the real application. )%+ )%/ 29)% 6:2 6:&6 *1' 6*1' 7/( (1 &203 67 9 && ,9&& ,qsxw 0lfurfrqwuroohu hj;& 2xwsxw 5 67 5 )5(4 5 &203 & &203 & ,9&& 2xwsxw ,1 9 %$77 9 ,1 & & / )5(46<1& & ,1 ' 59 3urylvlrqdo 3duwv 9 %2 , %2 , 6: / %2 ' %2 7 6: 5 &6 5 29+ 5 29/ & %2 5 )% 5 )% 5 )% 5 / $ss'ldj%rrvwvyj l bo reference designator d bo part number manufacturer c bo r cs r fb1 ,r fb3 r ovh r ovl c comp r comp c ivcc r freq ,r st ic 2 ic 1 vishay coilcraft mss1278t-104ml_ eevfk 1k101q panasonic value 100 uh 100 uf, 80v -- type diode capacitor capacitor capacitor ic ic inductor resistor resistor resistor resistor resistor resistor epcos 1 uf, 6.3v mlcc ccnpzc105kbw x76 infineon tle 8386el -- infineon xc886 -- 51 k ? , 1% panasonic erj3ekf 5102v 20 k ? , 1% panasonic erj3ekf 2002v 51 k ? , 1% panasonic erjp06f5102v 1 k ? , 1% panasonic erj3ekf 1001v panasonic ss3h10 schottky , 3 a, 100 v r 10 nf -- -- 10 k ? -- quantity 1 1 1 1 1 1 1 1 1 2 1 1 1 appdiagboostbom.vsd t sw transistor infineon ipd22n08s2l-50 n-ch, 75 v, 65 m ? 1 c in eeefk 1h101gp panasonic 100 uf, 50v capacitor 1 50 m ? , 1% erjb1cfr05u r fb 2 resistor 1 k ? , 1% panasonic erj3ekf 1001v 1
TLE8386EL application information datasheet 23 rev. 1.0, 2009-11-30 figure 15 boost voltage application circuit (current source) fbh fbl ovfb swo swcs gnd sgnd tle 8386 en comp st v cc ivcc input microcontroller (e.g . xc 2000 ) output r st r freq r comp c comp c ivcc output 10 13 11 8 1 in v batt v in c 1 c 2 l 1 14 7 6 9 4 3 2 12 freq / sync c in d rv provisional parts v bo i bo i sw l bo d bo t sw r cs r ovh r ovl c bo r fb r l v isiodocument r fb_l
datasheet 24 rev. 1.0, 2009-11-30 TLE8386EL application information 11.1 further application information in fixed frequency mode where an external resistor conf igures the switching frequency the minimum boost inductor is given by the formula in figure 16 . ?l min = minimum inductacne required during fixed frequency operation ?v bo = boost output voltage ?r cs = current sense resistor ?f freq = switching frequency figure 16 minimum inductance required during fixed frequency operation in synchronization mode where an external clock source configures the switching frequency the minimum boost inductor is given by the formula in figure 17 . ?l sync = minimum inductacne required during synchronization operation ?v bo = boost output voltage ?r cs = current sense resistor figure 17 minimum inductance required during synchronization operation ? l min v bo v [] r cs ? [] 106 3 ? 10 v [] f freq hz [] ----------------- ----------------- ------------------ ------------- - l sync v bo v [] r cs ? [] 106 3 ? 10 v [] 250khz -------------------- --------------------- ----------------- -
TLE8386EL revision history datasheet 25 rev. 1.0, 2009-11-30 12 revision history revision date changes 1.0 2009-11-30 initial datasheet
edition 2009-11-30 published by infineon technologies ag 81726 munich, germany ? 2010 infineon technologies ag all rights reserved. legal disclaimer the information given in this docu ment shall in no event be regarded as a guarantee of conditions or characteristics. with respect to any examples or hints given herein, any typical values stated herein and/or any information regarding the application of the device, infine on technologies hereby disclaims any and all warranties and liabilities of any kind, including witho ut limitation, warranties of non-infrin gement of intellectua l property rights of any third party. information for further information on technology, delivery terms and conditions and prices, please contact the nearest infineon technologies office ( www.infineon.com ). warnings due to technical requirements, components may contain dangerous substances. for information on the types in question, please contact the nearest infineon technologies office. infineon technologies compon ents may be used in life-su pport devices or systems only with the express written approval of infineon technologies, if a failure of such components can reasonably be expected to cause the failure of that life-support device or system or to affect the safe ty or effectiveness of that de vice or system. life support devices or systems are intended to be implanted in the hu man body or to support an d/or maintain and sustain and/or protect human life. if they fail, it is reasonable to assume that the health of the user or other persons may be endangered.

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