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march, 24 th 2011 automotive grade auips7142g dual channels current sense high side switch features www.irf.com 1 ? 24v battery system ? over current shutdown ? over temperature shutdown ? current sensing ? active clamp ? low quiescent current ? esd protection ? optimized turn on/off for emi ? lead free and rohs compliant applications ? 21w filament lamp ? solenoid ? 24v truck loads description the auips7142g is a fully protected dual high side switch specifically designed for driving lamp. it features current sensing, over-current, over-temperature, esd protection and drain to source active clamp. the ifb pin is used for current sensing. the over-curre nt shutdown is higher than inrush current of the lamp. product summary rds(on) 100m ? max. vclamp 65v current shutdown 20a min. package soic16l-wide body typical connection out ips in 2.5k vcc load battery input power ground ifb logic ground current feeback 10k on off
auips7142g qualification information ? automotive (per aec-q100 ?? ) qualification level comments: this family of ics has passed an automotive qualification. ir?s industrial and consumer qualific ation level is granted by extension of the higher automotive level. moisture sensitivity level soic-16l wb msl2, 260c (per ipc/jedec j-std-020) machine model class m4 (+/-450v) (per aec-q100-003) human body model class h2 (+/-4000v) ( per aec-q100-002 ) esd charged device model class c4 (+/-1000v) (per aec-q100-011) ic latch-up test class ii, level a (per aec-q100-004) rohs compliant yes ? qualification standards can be found at international rectifier?s web site http://www.irf.com/ ?? exceptions to aec-q100 requirements are noted in the qualification report. www.irf.com 2
auips7142g absolute maximum ratings absolute maximum ratings indicate sustained limits beyond which damage to the device may occur. (tj= -40c..150c, vcc=6..50v unless otherwise specified). symbol parameter min. max. units vout maximum output voltage vcc-60 vcc+0.3 v i rev maximum reverse pulsed current (t=100s) see page 8 ? 30 isd cont. maximum diode continuous current ta mbient=25c, rth=40c/w / per channel ? 1.7 a vcc-vin max. maximum vcc voltage -16 60 v iifb, max. maximum feedback current -50 10 ma vcc sc. maximum vcc voltage with short circuit protection see page 8 ? 50 v maximum power dissipation (internally limited by thermal protection) pd rth=40c/w ? 3 w tj max. max. storage & operating junction temperature -40 150 c thermal characteristics symbol parameter typ. max. units rth1 thermal resistance junction to ambi ent 6cm2 footprint one mosfet on 45 ? rth2 thermal resistance junction to ambi ent 6cm2 footprint two mosfet on 40 ? c/w note : tj-tambient=power dissi pated in the 2 channel x rth recommended operating conditions these values are given for a quick design. symbol parameter min. max. units continuous output current, tambient=85c, tj=125c iout rth=40c/w, 6cm2 footprint ? 1.5 a rifb ifb resistor 1.5 ? k ? www.irf.com 3
auips7142g static electrical characteristics tj=-40c..150c, vcc=6-50v (unless otherwise specified) symbol parameter min. typ. max. units test conditions vcc op. operating voltage 6 ? 60 v on state resistance tj=25c ? 75 100 rds(on) on state resistance tj=150c(2) ? 135 180 m ? ids=2a icc off supply leakage current ? 1 3 iout off output leakage current ? 1 3 a vin=vcc / vifb=vgnd vout=vgnd, tj=25c i in on input current while on 0.6 2 4 ma vcc-vin=28v, tj=25c v clamp1 vcc to vout clamp voltage 1 60 64 ? id=10ma v clamp2 vcc to vout clamp voltage 2 60 65 72 id=6a see fig. 2 vih(1) high level input threshold voltage ? 3 5 id=10ma vil(1) low level input threshold voltage 1.5 2.3 ? forward body diode voltage tj=25c ? 0.8 0.9 vf forward body diode voltage tj=125c ? 0.65 0.75 v if=1a (1) input thresholds are measured dire ctly between the input pin and vcc. switching electrical characteristics vcc=28v, resistive load=27 ? , tj=-40c..150c symbol parameter min. typ. max. units test conditions tdon turn on delay time to 20% 4 10 20 tr rise time from 20% to 80% of vcc 2 5 10 s tdoff turn off delay time 20 40 80 tf fall time from 80% to 20% of vcc 2.5 5 10 s see fig. 1 protection characteristics tj=-40c..150c, vcc=6-50v (unless otherwise specified) symbol parameter min. typ. max. units test conditions tsd over temperature threshold 150(2) 165 ? c see fig. 3 and fig.11 isd over-current shutdown 20 25 37 a see fig. 3 and page 7 i fault ifb after an over-current or an over- temperature (latched) 2.2 3 5 ma see fig. 3 current sensing characteristics tj=-40c..150c, vcc=6-50v (unless otherwise specified). specified 500s after the turn on. vcc-vifb>4v symbol parameter min. typ. max. units test conditions ratio i load / ifb current ratio 2000 2400 2800 iload<4a ratio_tc i load / ifb variation over temper ature(2) -5% 0 +5 % tj=-40c to +150c i offset load current offset -0.02 0 0.02 a iout<4a ifb leakage ifb leakage current on in open load 0 1 10 a iout=0a, vcc-vin=28v (2) guaranteed by design www.irf.com 4
auips7142g lead assignments 1 8 so16w 16 9 1-2- vcc 3- in1 4- ifb1 5- in2 6- ifb2 7-8-9-vcc 10-11-12- out2 13-14-15- out1 16- vcc functional block diagram all values are typical diag charge pump driver ifb out vcc 75v 100 ? tj > 165c iout > 25a 60v 75v - + 75v in set reset latch q 2ma 3v + - www.irf.com 5
auips7142g truth table op. conditions input output ifb pin voltage normal mode h l 0v normal mode l h i load x rfb / ratio open load h l 0v open load l h 0v short circuit to gnd h l 0v short circuit to gnd l l v fault (latched) over temperature h l 0v over temperature l l v fault (latched) operating voltage maximum vcc voltage : this is the maximum voltage before the breakdown of the ic process. operating voltage : this is the vcc range in which the functionality of the part is guaranteed. the aec-q100 qualification is run at the maximum operating voltage specified in the datasheet. reverse battery during the reverse battery the mosfet is kept off and the load current is flowing into the body diode of the power mosfet. power dissipation in the ips : p = i load * vf there is no protection, so tj must be lower than 150c in the worst case condition of current and ambient temperature. if the power dissipation is too high in rifb, a diode in serial can be added to block the current. the transistor used to pull-down the input should be a bipolar in order to block the reverse current. the 100ohm input resistor can not sustain continuously 16v (see vcc-vi n max. in the absolute maximum ratings section) active clamp the purpose of the active clamp is to limit the voltage acro ss the mosfet to a value below the body diode break down voltage to reduce the amount of stress on the device during switching. the temperature increase during active clamp can be estimated as follows: )t(zp clamp th cl tj ??? where: is the thermal impedance at t clamp and can be read from the thermal impedance curves given in the data sheets. )t(z clamp th clavg cl cl ivp ?? : power dissipation during active clamp 65vv cl ? : typical v clamp value. 2 i i cl clavg ? : average current during active clamp dt di i t cl cl ? : active clamp duration l vv dt di cl battery ? ? : demagnetization current figure 9 gives the maximum inductance versus the load current in the worst case : the part switch off after an over temperature detection. if the load inductance exceed the curve, a free wheeling diode is required. www.irf.com 6
auips7142g over-current protection the threshold of the over-current protection is set in order to guaranteed that the device is able to turn on a load with an inrush current lower than the minimum of isd. nevertheless for high current and high temperature the device may switch off for a lower current due to the over-temperature protection. this behavior is shown in figure 11. current sensing accuracy iout ifb ifb leakage ifb2 ifb1 iout2 iout1 i offset the current sensing is specif ied by measuring 3 points : - ifb1 for iout1 - ifb2 for iout2 - ifb leakage for iout=0 the parameters in the datasheet are computed with the following formula : ratio = ( iout2 ? iout1 )/( ifb2 ? ifb1) i offset = ifb1 x ratio ? iout1 this allows the designer to evaluate the ifb for any iout value using : ifb = ( iout + i offset ) / ratio if ifb > ifb leakage for some applications, a calibration is required. in that case, the accuracy of the system will depends on the variation of the i offset and the ratio over the temperature range. the ratio variation is given by ratio_tc specified in page 4. the ioffset variation depends directly on the rdson : i offset@-40c= i offset@25c / 0.8 i offset@150c= i offset@25c / 1.9 www.irf.com 7
auips7142g maximum vcc voltage with short circuit protection the maximum vcc voltage with short circuit is the maximum voltage for which the part is able to protect itself under test conditions representative of the applicat ion. 2 kind of short circuits are cons idered : terminal and load short circuit. out ips vcc l sc l supply 5h r supply 10mohm r sc l sc r sc terminal sc 0.1 h 10 mohm load sc 10 h 100 mohm maximum current duri ng reverse circulation in case of short circuit to battery, a voltage drop of the vcc may create a current which circulate in reverse mode. when the device is on, this reverse ci rculation current will not trigger the internal fault latch. this immunization is also true wh en the part turns on while a reverse current flows into the device. the maximum current (i rev) is specified in the maximum rating section. www.irf.com 8
auips7142g www.irf.com 9 vds ids vcc-vin vcc vds clamp t clamp see application notes to evaluate power dissipation vout vcc-vin 80% 20% 80% 20% td on tr td off tf figure 2 ? active clamp waveforms figure 1 ? in rise time & switching definitions 0 2 4 6 8 10 -50 0 50 100 150 t j tsd 165c icc off, supply leakage current (a) ids vin i shutdown tshutdown vifb v fault tj, junction temperature (c) figure 3 ? protection timing diagram figure 4 ? icc off (a) vs tj (c)
auips7142g www.irf.com 10 0 5 10 15 20 010203040 0 1 2 3 4 -50 -25 0 25 50 75 100 125 150 vih vil icc, supply current (a) vih and vil (v) 50 vcc-vout, supply voltage (v) tj , junction temperature (c) figure 5 ? icc off (a) vs vcc-vout (v) figure 6 ? vih and vil (v) vs tj (c) 0.01 0.1 0 1 .00 1 0.00 1 00.00 1 .e-05 1.e-04 1.e-03 1.e-02 1.e-01 1.e+00 1.e+01 1.e+02 zth 1 channel zth 2 channels figure 8 ? transient thermal impedance (c/w) vs time (s) zth, transient thermal impedance (c/w) time (s) 50% 10 rds(on), drain-to-source on resistance (normalized) 0% 150% 200% -50 0 50 100 150 tj, junction temperature (c) figure 7 - normalized rds(on) (%) vs tj (c)
auips7142g www.irf.com 11 0.0 1. 0 2.0 3.0 4.0 5.0 6.0 02468101214 25c 150c -40c 1 10 100 1.e+01 1.e+02 1.e+03 1.e+04 1.e+05 ifb, current feedback current (ma) max. output current (a) inductance (h) iout, output current (a) figure 9 ? max. iout (a) vs inductance (h) figure 10 ? ifb (ma) vs iout (a) 0.0001 0.001 0.01 0.1 1 10 1 00 051 01 52 tsd, time to shutdown(s) 0 '-40c/2ch '25c/2ch '125c/2ch iout, output current per channel(a) figure 11 ? tsd (s) vs i out (a) 2 channels on
auips7142g case outline soic16w www.irf.com 12
auips7142g tape and reel ? soic16w www.irf.com 13
auips7142g www.irf.com 14
auips7142g part marking information ordering information standard pack base part number package type form quantity complete part number tube 45 auips7142g auips7142g so28w tape and reel 1500 auips7142gtr www.irf.com 15
auips7142g important notice unless specifically designated for the automotive market, inte rnational rectifier corporation and its subsidiaries (ir) reserve the right to make corrections, modifications, enhanc ements, improvements, and other changes to its products and services at any time and to discontinue any product or serv ices without notice. part numbers designated with the ?au? prefix follow automotive industry and / or customer specific requirements with regards to product discontinuance and process change notification. all products are sold subject to ir?s terms and conditions of sale supplied at the time of order acknowledgment. ir warrants performance of its hardware products to the specif ications applicable at the time of sale in accordance with ir?s standard warranty. testing and other quality control techniques are used to the extent ir deems necessary to support this warranty. except where mandated by government re quirements, testing of all parameters of each product is not necessarily performed. ir assumes no liability for applications assistance or cust omer product design. customers are responsible for their products and applications using ir components. to minimize the risks with customer products and applications, customers should provide adequate design and operating safeguards. reproduction of ir information in ir data books or data sheets is permissible only if reproduction is without alteration and is accompanied by all associated warranties, conditions, limita tions, and notices. reproduction of this information with alterations is an unfair and deceptive business practice. ir is not responsible or liable for such altered documentation. information of third parties may be subject to additional restrictions. resale of ir products or serviced with statements different from or beyond the parameters stated by ir for that product or service voids all express and any implied warranties for the associated ir product or service and is an unfair and deceptive business practice. ir is not responsible or liable for any such statements. ir products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or in other applications intended to support or sustain life, or in any other application in which the failure of the ir product could create a situation where personal injury or death may occur. should buyer purchase or use ir products for any such unintended or unauthorized application, buyer shall indemnify and hold international rectifier and its officers, employees, subsidiaries, affiliates, and distributors harml ess against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that ir was negligent regarding the design or manufacture of the product. ir products are neither designed nor intended for use in milit ary/aerospace applications or environments unless the ir products are specifically designated by ir as military-grade or ?enhanced plastic.? only pr oducts designated by ir as military-grade meet military specifications . buyers acknowledge and agree that any such use of ir products which ir has not designated as military-grade is solely at the buyer?s risk, and that they are so lely responsible for compliance with all legal and regulatory requirements in connection with such use. ir products are neither designed nor intended for use in autom otive applications or environments unless the specific ir products are designated by ir as compliant with iso/ts 16949 requirements and bear a part number including the designation ?au?. buyers acknowledge and agree that, if they use any non-designated products in automotive applications, ir will not be responsible for any failure to meet such requirements. for technical support, please contact ir?s technical assistance center http://www.irf.com/technical-info/ world headquarters: 101 n sepulbeda blvd., el segundo, california 90245 tel: (310) 252-7105 www.irf.com 16
auips7142g www.irf.com 17 revision history revision date notes/changes a3 april, 29 th 2010 add tri-temp limits a4 march, 17 th 2011 au release a5 march,18 th 2011 update lead free and rohs 1 st page a6 march, 24 th 2011 add tape and reel information

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