|
If you can't view the Datasheet, Please click here to try to view without PDF Reader . |
|
Datasheet File OCR Text: |
september 2013 doc id 13519 rev 7 1/37 1 vnq5e050ak-e quad channel high-side driver with analog current sense for automotive applications features general ? inrush current active management by power limitation ? very low standby current ? 3.0 v cmos compatible inputs ? optimized electromagnetic emissions ? very low electromag netic susceptibility ? compliance with european directive 2002/95/ec ? very low current sense leakage diagnostic functions ? proportional load current sense ? high current sense precision for wide currents range ? current sense disable ? off-state open-load detection ? output short to v cc detection ? overload and short to ground (power limitation) indication ? thermal shutdown indication protections ? undervoltage shutdown ? overvoltage clamp ? load current limitation ? self limiting of fast thermal transients ? protection against loss of ground and loss of v cc ? overtemperature shutdown with auto restart (thermal shutdown) ? reverse battery protected ? electrostatic discharge protection application all types of resistive, inductive and capacitive loads suitable as led driver description the vnq5e050ak-e is a quad channel high-side driver manufactured using st proprietary vipower? m0-5 technology and housed in powersso-24 package. the device is designed to drive 12 v automotive grounded loads, and to provide protection and diagnostics. it also implements a 3 v and 5 v cmos compatible interface for the use with any microcontroller. the device integrates advanced protective functions such as load cu rrent limitatio n, inrush and overload active management by power limitation, overtemperature shut-off with auto-restart and overvoltage active clamp. a dedicated analog current sense pin is associated with every output channel providing enhanced diagnostic functions including fast detection of overload and short-circuit to ground through power limitation indication, overtemperature indication, short-circuit to v cc diagnosis and on-state and off-state open-load detection. the current sensing and diagnostic feedback of the whole device can be disabled by pulling the cs_dis pin high to share external sense resistor with similar devices. max supply voltage v cc 41 v operating voltage range v cc 4.5 to 28 v max on-state resist ance (per ch.) r on 50 m ? current limitation (typ) i limh 27 a off-state supply current i s 2 a (1) 1. typical value with all loads connected. powersso-24 www.st.com
contents vnq5e050ak-e 2/37 doc id 13519 rev 7 contents 1 block diagram and pin co nfiguration . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2 electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.1 absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2.2 thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.3 electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 2.4 waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 2.5 electrical characteristics curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 3 application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 3.1 gnd protection network against reverse battery . . . . . . . . . . . . . . . . . . . 24 3.1.1 solution 1: resistor in the ground line (rgnd only) . . . . . . . . . . . . . . . . 24 3.1.2 solution 2: diode (dgnd) in the ground line . . . . . . . . . . . . . . . . . . . . . 25 3.2 load dump protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 3.3 mcu i/os protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 3.4 current sense and diagnostic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 3.4.1 short to vcc and off-state open-load detection . . . . . . . . . . . . . . . . . . 27 3.5 maximum demagnetization energy (vcc = 13.5 v) . . . . . . . . . . . . . . . . . 28 4 package and pc board thermal da ta . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 4.1 powersso-24 thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 5 package and packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 5.1 ecopack ? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 5.2 powersso-24 mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 5.3 packing information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 6 order codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 7 revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 vnq5e050ak-e list of tables doc id 13519 rev 7 3/37 list of tables table 1. pin functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 table 2. suggested connections for unused and not connected pins . . . . . . . . . . . . . . . . . . . . . . . . 6 table 3. absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 table 4. thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 table 5. power section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 table 6. switching (v cc =13v; t j = 25 c) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 table 7. logic inputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 table 8. protections and diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 table 9. current sense (8 v < v cc < 18 v) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 table 10. open-load detection (8v vnq5e050ak-e block diagram and pin configuration doc id 13519 rev 7 5/37 1 block diagram and pin configuration figure 1. block diagram table 1. pin functions name function v cc battery connection. output n power output. gnd ground connection. must be reverse battery protected by an external diode/resistor network. input n voltage controlled input pin with hyster esis, cmos compatible. controls output switch state. current sense n analog current sense pin, delivers a current proportional to the load current. cs_dis active high cmos compatible pi n, to disable the current sense pin. v cc ch 1 control & diagnostic 1 logic driver v on limitation current limitation power clamp off state open load over temp. undervoltage v senseh current sense ch 3 ch 4 ch 2 overload protection (active power limitation) in1 in2 in3 in4 cs1 cs2 cs3 cs4 cs_ dis gnd out4 out3 out2 out1 signal clamp control & diagnostic channels 2, 3 & 4 block diagram and pin configuration vnq5e050ak-e 6/37 doc id 13519 rev 7 figure 2. configuration diagram (top view) table 2. suggested connections for unused and not connected pins connection / pin current sense n.c. output input cs_dis floating not allowed x x x x to ground through 1 k ? resistor x through 22 k ? resistor through 10 k ? resistor through 10 k ? resistor input2 current sense2 gnd v cc input1 current sense1 cs_dis. v cc current sense3 input3 input4 current sense4 output2 output2 output1 output1 output1 output2 output4 output4 output3 output3 output3 output4 tab = v cc vnq5e050ak-e electrical specifications doc id 13519 rev 7 7/37 2 electrical specifications figure 3. current and voltage conventions note: v fn = v outn - v cc during reverse battery condition. 2.1 absolute maximum ratings stressing the device above the ratings listed in the ?absolute maximum ratings? tables may cause permanent damage to the device. these are stress ratings only and operation of the device at these or any other conditions above those indicated in the operating sections of this specification is not implie d. exposure to the conditions reported in this section for extended periods may affect device reliability. refer also to the stmicroelectronics sure program and other relevant quality documents. v fn i s i gnd v cc v cc outputn inputn v inn v sensen gnd cs_dis i csd v csd i inn current s ensen v outn i outn i sensen table 3. absolute maximum ratings symbol parameter value unit v cc dc supply voltage 41 v -v cc reverse dc supply voltage 0.3 v -i gnd dc reverse ground pin current 200 ma i out dc output current internally limited a -i out reverse dc output current 20 a i in dc input current -1 to 10 ma i csd dc current sense disable input current -1 to 10 ma -i csense dc reverse cs pin current 200 ma v csense current sense maximum voltage v cc - 41 to +v cc v electrical specifications vnq5e050ak-e 8/37 doc id 13519 rev 7 2.2 thermal data 2.3 electrical characteristics values specified in th is section are for 8 v < v cc <28v, -40c< t j < 150 c, unless otherwise stated. e max maximum switching energy (single pulse) (l = 3 mh; r l =0 ? ; v bat =13.5v; t jstart =150c; i out =i liml (typ.)) 104 mj v esd electrostatic discharge (human body model: r = 1.5 k ?? c=100pf) ? input ? current sense ?cs_dis ? output ?v cc 4000 2000 4000 5000 5000 v v v v v v esd charge device model (cdm-aec-q100-011) 750 v t j junction operating temperature -40 to 150 c t stg storage temperature -55 to 150 c table 3. absolute maximum ratings (continued) symbol parameter value unit table 4. thermal data symbol parameter m ax. value unit r thj-case thermal resistance junction-case (with one channel on) 2.8 c/w r thj-amb thermal resistance junction-ambient see figure 36 c/w table 5. power section symbol parameter test conditions min. typ. max. unit v cc operating supply voltage 4.5 13 28 v v usd undervoltage shutdown 2.5 3.5 4.5 v v usdhyst undervoltage shutdown hysteresis 0.5 v r on on-state resistance (1) i out =2a; t j =25c 50 m ? i out =2a; t j = 150 c 100 i out =2a; v cc =5v; t j =25c 65 v clamp clamp voltage i s =20ma 41 46 52 v vnq5e050ak-e electrical specifications doc id 13519 rev 7 9/37 i s supply current off-state; v cc =13v; t j =25c; v in =v out =v sense =v csd =0v 2 (2) 5 (2) a on-state; v cc =13v; v in =5v; i out =0a 814ma i l(off) off-state output current (1) v in =v out =0v; v cc =13v; t j =25c 00.01 3 a v in =v out =0v; v cc =13v; t j = 125 c 05 v f output - v cc diode voltage (1) -i out =2a; t j = 150 c 0.7 v 1. for each channel 2. powermos leakage included. table 6. switching (v cc =13v; t j =25c) symbol parameter test conditions min. typ. max. unit t d(on) turn-on delay time r l =6.5 ? (see figure 6. )20 s t d(off) turn-off delay time r l =6.5 ? (see figure 6. )35 s (dv out /dt) on turn-on voltage slope r l =6.5 ? see figure 26 v ? s (dv out /dt) off turn-off voltage slope r l =6.5 ? see figure 28 v ? s w on switching energy losses during t won r l =6.5 ?? (see figure 6. )0.15 mj w off switching energy losses during t woff r l =6.5 ?? (see figure 6. )0.25 mj table 7. logic inputs symbol parameter test conditions min. typ. max. unit v il input low level voltage 0.9 v i il low level input current v in =0.9v 1 a v ih input high level voltage 2.1 v i ih high level input current v in =2.1v 10 a v i(hyst) input hysteresis voltage 0.25 v v icl input clamp voltage i in =1ma 5.5 7 v i in =-1ma -0.7 v csdl cs_dis low level voltage 0.9 v i csdl low level cs_dis current v csd =0.9v 1 a v csdh cs_dis high level voltage 2.1 v table 5. power section (continued) symbol parameter test conditions min. typ. max. unit electrical specifications vnq5e050ak-e 10/37 doc id 13519 rev 7 i csdh high level cs_dis current v csd =2.1v 10 a v csd(hyst) cs_dis hysteresis voltage 0.25 v v cscl cs_dis clamp voltage i csd =1ma 5.5 7 v i csd =-1ma -0.7 table 8. protections and diagnostics (1) 1. to ensure long term reliability under heavy overload or s hort circuit conditions, protection and related diagnostic signals must be used together with a proper software strategy. if the device is subjected to abnormal conditions, this software must limit the duration and number of activation cycles. symbol parameter test conditions min. typ. max. unit i limh dc short circuit current v cc = 13 v 19 27 38 a 5v electrical specifications vnq5e050ak-e 14/37 doc id 13519 rev 7 figure 7. delay response time between ri sing edge of output current and rising edge of current sense (cs enabled) figure 8. output voltage drop limitation v in i out i sense i outmax i sensemax 90% i sensemax 90% i outmax ? t dsense2h t t t v on i out v cc -v out t j =150c t j =25c t j =-40c v on /r on (t) vnq5e050ak-e electrical specifications doc id 13519 rev 7 15/37 figure 9. i out /i sense vs i out figure 10. maximum current sense ratio drift vs load current note: parameter guaranteed by design; it is not tested. 1200 1400 1600 1800 2000 2200 2400 2600 2800 11,522,533,54 i out (a) i out / i sense max t j = -40 c to 150 c max t j = 25 c to 150 c min t j = 25 c to 150 c = min t j = -40 c to 150 c typical value -20 -15 -10 -5 0 5 10 15 20 1234 i out (a) dk/k(%) electrical specifications vnq5e050ak-e 16/37 doc id 13519 rev 7 table 11. truth table conditions input output sense (v csd =0v) (1) 1. if the v csd is high, the sense output is at a high impedance, its potential depends on leakage currents and external circuit. normal operation l h l h 0 nominal overtemperature l h l l 0 v senseh undervoltage l h l l 0 0 overload h h x (no power limitation) cycling (power limitation) nominal v senseh short circuit to gnd (power limitation) l h l l 0 v senseh open-load off-state (with external pull-up) lhv senseh short circuit to v cc (external pull-up disconnected) l h h h v senseh < nominal negative output voltage clamp ll0 vnq5e050ak-e electrical specifications doc id 13519 rev 7 17/37 table 12. electrical transient requirements (part 1) iso 7637-2: 2004(e) test pulse test levels (1) 1. the above test levels must be considered referred to v cc = 13.5v except for pulse 5b. number of pulses or test times burst cycle/pulse repetition time delays and impedance iii iv min. max. 1 -75v -100v 5000 pulses 0.5s 5s 2 ms, 10 ? 2a +37v +50v 5000 pulses 0.2s 5s 50s, 2 ? 3a -100v -150v 1h 90ms 100ms 0.1s, 50 ? 3b +75v +100v 1h 90ms 100ms 0.1s, 50 ? 4 -6v -7v 1 pulse 100ms, 0.01 ? 5b (2) 2. valid in case of external load dump clamp: 40v maximum referred to ground. +65v +87v 1 pulse 400ms, 2 ? table 13. electrical transient requirements (part 2) iso 7637-2: 2004e test pulse test level results iii vi 1c c 2a c c 3a c c 3b c c 4c c 5b (1) 1. valid in case of external load dump clamp: 40v maximum referred to ground. cc table 14. electrical transient requirements (part 3) class contents c all functions of the device performed as designed after exposure to disturbance. e one or more functions of the device did not perform as designed after exposure to disturbance and cannot be returned to prope r operation without replacing the device. electrical specifications vnq5e050ak-e 18/37 doc id 13519 rev 7 2.4 waveforms figure 11. normal operation figure 12. overload or short to gnd i out v sense v cs_dis input nominal load nominal load normal operation power limitation i limh > i liml > i out v sense v cs_dis input thermal cycling overload or short to gnd vnq5e050ak-e electrical specifications doc id 13519 rev 7 19/37 figure 13. intermittent overload figure 14. off-state open-load with external circuitry i out v sense v cs_dis input i limh > nominal load intermittent overload i liml > overload v senseh > input off-state open load with external circutry v ol i out v sense v cs_dis v out v out > v ol t dstk(on) v senseh > electrical specifications vnq5e050ak-e 20/37 doc id 13519 rev 7 figure 15. short to v cc figure 16. t j evolution in overload or short to gnd t dstk(on) v out > v ol resistive short to v cc hard short to v cc short to v cc i out v cs_dis v out v ol t dstk(on) t tsd t r t j evolution in overload or short to gnd i limh > < i liml t j_start t hyst power limitation self-limitation of fast thermal transients input i out t j vnq5e050ak-e electrical specifications doc id 13519 rev 7 21/37 2.5 electrical char acteristics curves figure 17. off-state output current figure 18. high level input current figure 19. input clamp voltage figure 20. input low level figure 21. input high level figure 22. input hysteresis voltage -50 -25 0 25 50 75 100 125 150 175 tc (c) 0 100 200 300 400 500 600 700 iloff (na) off state vcc=13v vin=vout=0v -50 -25 0 25 50 75 100 125 150 175 tc (c) 0 0,5 1 1,5 2 2,5 3 3,5 4 4,5 5 iih (a) vin=2.1v -50 -25 0 25 50 75 100 125 150 175 tc (c) 5 5,2 5,4 5,6 5,8 6 6,2 6,4 6,6 6,8 7 vicl (v) lin=1ma -50 -25 0 25 50 75 100 125 150 175 tc (c) 0 0,2 0,4 0,6 0,8 1 1,2 1,4 1,6 1,8 2 vil (v) -50 -25 0 25 50 75 100 125 150 175 tc (c) 0 0,5 1 1,5 2 2,5 3 3,5 4 vih (v) -50 -25 0 25 50 75 100 125 150 175 tc (c) 0 0,1 0,2 0,3 0,4 0,5 0,6 0,7 0,8 0,9 1 vihyst (v) electrical specifications vnq5e050ak-e 22/37 doc id 13519 rev 7 figure 23. on-state resistance vs t case figure 24. on-state resistance vs v cc figure 25. undervoltage shutdown figure 26. turn-on voltage slope figure 27. i limh vs t case figure 28. turn-off voltage slope -50 -25 0 25 50 75 100 125 150 175 tc (c) 0 30 60 90 120 150 ron (mohm) iout= 2a vcc=13v 0 5 10 15 20 25 30 35 40 vcc (v) 0 20 40 60 80 100 ron (mohm) tc=-40c tc=25c tc=125c tc=150c -50 -25 0 25 50 75 100 125 150 175 tc (c) 0 2 4 6 8 10 12 14 16 vusd (v) -50 -25 0 25 50 75 100 125 150 175 tc (c) 0 100 200 300 400 500 600 700 800 900 1000 (dvout/dt )on (v/ms) vcc=13v ri=6.5 ohm -50 -25 0 25 50 75 100 125 150 175 tc (c) 10 15 20 25 30 35 40 ilimh (a) vcc=13v -50 -25 0 25 50 75 100 125 150 175 tc (c) 0 50 100 150 200 250 300 350 400 450 500 550 600 (dvout/dt )off (v/ms) vcc=13v ri= 6.5 ohm vnq5e050ak-e electrical specifications doc id 13519 rev 7 23/37 figure 29. cs_dis high level voltage figure 30. cs_dis clamp voltage figure 31. cs_dis low level voltage -50 -25 0 25 50 75 100 125 150 175 tc (c) 0 0,5 1 1,5 2 2,5 3 3,5 4 vcsdh (v) -50 -25 0 25 50 75 100 125 150 175 tc (c) 0 1 2 3 4 5 6 7 8 9 10 vcsdcl(v) iin = 1 ma -50 -25 0 25 50 75 100 125 150 175 tc (c) 0 0,5 1 1,5 2 2,5 3 vcsdl (v) application information vnq5e050ak-e 24/37 doc id 13519 rev 7 3 application information figure 32. application schematic note: channel 2, 3, 4 have the same internal circuit as channel 1. 3.1 gnd protection network against reverse battery this section provides two solutions for implementing a ground protection network against reverse battery. 3.1.1 solution 1: resist or in the ground line (r gnd only) this can be used with any type of load. the following is an indication on how to dimension the r gnd resistor. 1. r gnd ? 600 mv / (i s(on)max ). 2. r gnd ???? v cc ) / (-i gnd ) where -i gnd is the dc reverse ground pin current and can be found in the absolute maximum rating section of the device datasheet. power dissipation in r gnd (when v cc < 0: during reverse battery situations) is: equation 1 p d = (-v cc ) 2 /r gnd v cc gnd output d gnd r gnd d ld ? cu +5v v gnd cs_dis iinput r prot r prot current sense r prot r sense c ext vnq5e050ak-e application information doc id 13519 rev 7 25/37 this resistor can be shared amongst several different hsds. please note that the value of this resistor should be calculated with formula (1) where i s(on)max becomes the sum of the maximum on-state currents of the different devices. please note that if the microprocessor ground is not shared by the device ground then the r gnd will produce a shift (i s(on)max * r gnd ) in the input thresholds and the status output values. this shift will vary depending on how ma ny devices are on in the case of several high side drivers sharing the same r gnd . if the calculated power dissipation leads to a large resistor or several devices have to share the same resistor then st suggests to utilize section 3.1.2: solution 2: diode (dgnd) in the ground line . 3.1.2 solution 2: diode (d gnd ) in the ground line a resistor (r gnd =1k ??? should be inserted in parallel to d gnd if the device drives an inductive load. this small signal diode can be safely shared amongst several different hsds. also in this case, the presence of the grou nd network will produce a shift ( ? 600mv) in the input threshold and in the status output values if the microprocessor ground is not common to the device ground. this shift will not vary if more than one hsd shares t he same diode/resistor network. 3.2 load dump protection d ld is necessary (voltage transient suppressor) if the load dump peak voltage exceeds the v cc max dc rating. the same applies if the device is subject to transients on the v cc line that are greater than the ones shown in the iso 7637-2: 2004(e) table. 3.3 mcu i/os protection if a ground protection network is used and negative transients are present on the v cc line, the control pins will be pulled negative. st suggests to insert a resistor (r prot ) in line to prevent the microcontroller i/o pins to latch-up. the value of these resistors is a compromise between the leakage current of microcontroller and the current required by the hsd i/os (input levels compatibility) with the latch-up limit of microcontroller i/os. equation 2 -v ccpeak /i latchup ? r prot ? (v oh ? c -v ih -v gnd ) / i ihmax calculation example: for v ccpeak = -100 v and i latchup ? 20 ma; v oh ? c ? 4.5 v 5k ? ? r prot ? 180 k ? . recommended values: r prot =10k ??? c ext =10nf . application information vnq5e050ak-e 26/37 doc id 13519 rev 7 3.4 current sense and diagnostic the current sense pin performs a double function (see figure 33: current sense and diagnostic ): current mirror of the load cu rrent in normal operation, delivering a current proportional to the load one according to a known ratio k x . the current i sense can be easily converted to a voltage v sense by means of an external resistor r sense . linearity between i out and v sense is ensured up to 5v minimum (see parameter v sense in table 9: current sense (8 v < v cc <18v) ). the current sense accuracy depends on the output current (refer to current sense electrical characteristics table 9: current sense (8 v < v cc <18v) ). diagnostic flag in fault conditions , delivering a fixed voltage v senseh up to a maximum current i senseh in case of the following fault conditions (refer to tr u t h t a b l e ): ? power limitation activation ?overtemperature ?short to v cc in off-state ? open-load in off-state with additional external components. a logic level high on cs_dis pin sets at the same time all the current sense pins of the device in a high impedance state, thus disabling the current monitoring and diagnostic detection. this feature allows multiplexing of the microcontroller analog inputs by sharing of sense resistance and adc line among different devices. figure 33. current sense and diagnostic main mosn 41v outn i loff2r r sense r prot to uc adc r pd r pu v pu pwr_lim v sense pu_cmd overtemperature ol off + - v ol current sensen i out /k x i senseh v bat i loff2f v senseh load inputn v cc gnd cs_dis vnq5e050ak-e application information doc id 13519 rev 7 27/37 3.4.1 short to v cc and off-state open-load detection short to v cc a short circuit between v cc and output is indicated by the relevant current sense pin set to v senseh during the device off-state. small or no current is delivered by the current sense during the on-state depending on the nature of the short circuit. off-state open-load with external circuitry detection of an open-load in off mode requires an external pull-up resistor r pu connecting the output to a positive supply voltage v pu . it is preferable v pu to be switched off during the module standby mode in order to avoid the overall standby current consumption to increase in normal conditions, i.e. when load is connected. an external pull down resistor r pd connected between output and gnd is mandatory to avoid misdetection in case of floating outputs in off-state (see figure 33: current sense and diagnostic ). r pd must be selected in order to ensure v out < v olmin unless pulled up by the external circuitry: equation 3 r pd ?? 22 ? k ?? is recommended. for proper open-load detection in off-state, the external pull-up resistor must be selected according to the following formula: equation 4 for the values of v olmin ,v olmax , i l(off2)r and i l(off2)f see table 10: open-load detection (8v vnq5e050ak-e package and pc board thermal data doc id 13519 rev 7 29/37 4 package and pc board thermal data 4.1 powersso-24 thermal data figure 35. powersso-24 pc board note: layout condition of r th and z th measurements (pcb: double layer, thermal vias, fr4 area = 77 mm x 86 mm, pcb thickness = 1.6 mm, cu thickness = 70 m (front and back side), copper areas: from minimum pad lay-out to 8 cm 2 ). figure 36. r thj-amb vs pcb copper area in open box free air condition (one channel on) 30 35 40 45 50 55 0246810 rthj_amb(c/w) pcb cu heatsink area (cm^2) package and pc board th ermal data vnq5e050ak-e 30/37 doc id 13519 rev 7 figure 37. powersso-24 thermal impedance junction ambient single pulse (one channel on) figure 38. thermal fitting model of a double channel hsd in powersso-24 note: the fitting model is a simplif ied thermal tool and is valid for transient evolutions where the embedded protections (power limitation or thermal cycling during thermal shutdown) are not triggered. 0.1 1 10 100 1000 0.0001 0.001 0.01 0.1 1 10 100 1000 time (s) zth (c/w) footprint 8 cm 2 2 cm 2 vnq5e050ak-e package and pc board thermal data doc id 13519 rev 7 31/37 equation 5: pulse calculation formula where ? = t p /t table 15. thermal parameters area/island (cm 2 )footprint28 r1 = r7 = r9 = r11 (c/w) 0.4 r2 = r8 = r10 = r12 (c/w) 2 r3 (c/w) 6 r4 (c/w) 7.7 r5 (c/w) 9 9 8 r6 (c/w) 28 17 10 c1 = c7 = c9 = c11 (w.s/c) 0.001 c2 = c8 = c10 = c12 (w.s/c) 0.0022 c3 (w.s/c) 0.025 c4 (w.s/c) 0.75 c5 (w.s/c) 1 4 9 c6 (w.s/c) 2.2 5 17 z th ? r th ? z thtp 1 ? ? ?? + ? = package and packing information vnq5e050ak-e 32/37 doc id 13519 rev 7 5 package and packing information 5.1 ecopack ? in order to meet environmental requirements, st offers these devices in different grades of ecopack? packages, depending on their level of environmental compliance. ecopack? specifications, grade definitions and product status are available at: www.st.com . ecopack? is an st trademark. 5.2 powersso-24 mechanical data figure 39. powersso-24 package dimensions vnq5e050ak-e package and packing information doc id 13519 rev 7 33/37 table 16. powersso-24 mechanical data symbol millimeters min. typ. max. a 2.45 a2 2.15 2.35 a1 0 0.1 b0.33 0.51 c0.23 0.32 d 10.10 10.50 e7.40 7.60 e0.8 e3 8.8 f2.3 g 0.1 h 10.1 10.5 h 0.4 k0 8 l0.55 0.85 o1.2 q0.8 s2.9 t3.65 u1.0 n 10 x4.1 4.7 y6.5 7.1 package and packing information vnq5e050ak-e 34/37 doc id 13519 rev 7 5.3 packing information figure 40. powersso-24 tube shipment (no suffix) figure 41. powersso-24 tape and reel shipment (suffix ?tr?) a c b all dimensions are in mm. base q.ty 49 bulk q.ty 1225 tube length ( 0.5) 532 a 3.5 b 13.8 c ( 0.1) 0.6 base q.ty 1000 bulk q.ty 1000 a (max) 330 b (min) 1.5 c ( 0.2) 13 f 20.2 g (+ 2 / -0) 24.4 n (min) 100 t (max) 30.4 reel dimensions tape dimensions according to electronic industries association (eia) standard 481 rev. a, feb 1986 all dimensions are in mm. tape width w 24 tape hole spacing p0 ( 0.1) 4 component spacing p 12 hole diameter d ( 0.05) 1.55 hole diameter d1 (min) 1.5 hole position f ( 0.1) 11.5 compartment depth k (max) 2.85 hole spacing p1 ( 0.1) 2 top cover tape end start no components no components components 500mm min 500mm min empty components pockets saled with cover tape. user direction of feed vnq5e050ak-e order codes doc id 13519 rev 7 35/37 6 order codes table 17. device summary package order codes tube tape and reel powersso-24 vnq5e050ak-e VNQ5E050AKTR-E revision history vnq5e050ak-e 36/37 doc id 13519 rev 7 7 revision history table 18. document revision history date revision changes 06-jun-2007 1 initial release. 27-mar-2008 2 updated table 9: current sense (8 v < v cc <18v) : ? added dk1/k1, dk2/k2, dk3/k3 parameters ? changed t dsense2h max value from 300 s to 250 s updated table 10: open-load detection (8v |
Price & Availability of VNQ5E050AKTR-E |
|
|
All Rights Reserved © IC-ON-LINE 2003 - 2022 |
[Add Bookmark] [Contact Us] [Link exchange] [Privacy policy] |
Mirror Sites : [www.datasheet.hk]
[www.maxim4u.com] [www.ic-on-line.cn]
[www.ic-on-line.com] [www.ic-on-line.net]
[www.alldatasheet.com.cn]
[www.gdcy.com]
[www.gdcy.net] |