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june, 6th 2011 automotive grade auips7125r current sense high side switch features ? suitable for 24v systems www.irf.com 1 ? over current shutdown ? over temperature shutdown ? current sensing ? active clamp ? reverse circulation immunization ? optimized turn on/off for emi ? reverse battery protection (mosfet on) applications ? 75w filament lamp ? solenoid ? 24v loads for trucks description the auips7125r is a fully protected five terminal high side switch specifically designed for driving lamp. it features current sensing, ov er-current, over-temperature, esd protection and drain to source active clamp. when the input voltage vcc - vin is higher than the specified threshold, the output power mosfet is turned on. when the vcc - vin is lower than the specified vil threshold, the output mosfet is tu rned off. the ifb pin is used for current sensing. the over-current shutdown is higher than inrush current of the lamp. product summary rds(on) 30m ? max. vclamp 65v current shutdown 50a min. packages dpak typical connection out auips7125r in rifb vcc load battery input power ground ifb logic ground current feeback 10k on off downloaded from: http:///
auips7125r qualification information ? automotive (per aec-q100 ?? ) qualification level comments: this family of ics has passed an automotive qualification. irs industrial and consumer qualificat ion level is granted by extension of the higher automotive level. moisture sensitivity level dpak-5l msl1, 260c (per ipc/jedec j-std-020) machine model class m2 (200 v) (per aec-q100-003) human body model class h1c (1500 v) ( per aec-q100-002 ) esd charged device model class c5 (1000 v) (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 rectifiers web site http://www.irf.com/ ?? exceptions (if any) to aec-q100 require ments are noted in the qualification report. www.irf.com 2 downloaded from: http:///
auips7125r 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 ? 60 isd cont. maximum diode continuous current tambient=25c, rth=70c/w ? 2.5 a vcc-vin max. maximum vcc voltage -32 60 v iifb, max. maximum feedback current -50 10 ma vcc sc maximum vcc voltage with sh ort circuit protection see page 8 ? 50 v maximum power dissipation (internally limited by thermal protection) pd rth=50c/w dpack 6cm2 footprint ? 2.5 w tj max. max. storage & operati ng junction temperature -40 150 c thermal characteristics symbol parameter typ. max. units rth1 thermal resistance junction to ambient dpak std footprint 70 ? rth2 thermal resistance junction to ambient dpak 6cm2 footprint 50 ? rth3 thermal resistance junction to case dpak 2 ? c/w 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=50c/w, dpak 6cm2 footprint ? 3.8 a rifb ifb resistor 1.5 ? k ? www.irf.com 3 downloaded from: http:///
auips7125r static electrical characteristics tj=-40c..150c, vcc=6-50v (unless otherwise specified) symbol parameter min. typ. max. units test conditions vcc op. operating voltage range 6 ? 60 v on state resistance tj=25c ? 24 30 rds(on) on state resistance tj=150c(2) ? 45 55 m ? ids=2a icc off supply leakage current ? 2 4 iout off output leakage current ? 2 4 a vin=vcc=28v,vifb=vgnd vout=vgnd, tj=25c iin on input current when device on 1 3.5 6 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=20a see fig. 2 vih(1) high level input threshold voltage ? 3.5 5.9 id=10ma vil(1) low level input threshold voltage 1.5 3.2 ? v rds(on) rev reverse on state resistance tj=25c ? 25 40 m ? isd=2a forward body diode voltage tj=25c ? 0.75 0.85 vf forward body diode voltage tj=125c ? 0.62 0.7 v if=3a rin input resistor 180 250 350 ? (1) input thresholds are measured direct ly between the input pin and the tab. switching electrical characteristics vcc=28v, resistive load=6.8 ? , tj=-40c..150c symbol parameter min. typ. max. units test conditions tdon turn on delay time 5 15 30 tr rise time from 20% to 80% of vcc 5 10 30 s tdoff turn off delay time 35 75 120 tf fall time from 80% to 20% of vcc 6 15 30 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(2) 150 165 ? c see fig. 3 and fig. 11 isd over-current shutdown 50 60 85 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 7050 8500 9950 iload<14a ratio_tc i load / ifb variation over temper ature(2) -5% 0 +5 % tj=-40c to +150c i offset load current offset -0.06 0 0.06 a iout<14a ifb leakage ifb leakage current 0 1 10 a iout=0a (2) guaranteed by design www.irf.com 4 downloaded from: http:///
auips7125r lead assignments 1- nc 2- in 3- vcc 4- ifb 5- out 1 2 4 5 dpak 3- vcc functional block diagram all values are typical diag charge pump driver ifb out vcc 75v 250 ? tj > 165c iout > 60a 60v 75v -+ 75v in set reset latch q 3.5ma 3v + - reverse battery protection www.irf.com 5 downloaded from: http:///
auips7125r 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 ifb leakage x rifb short circuit to gnd h l 0v short circuit to gnd l l i fault x rifb(latched) over temperature h l 0v over temperature l l i fault x rifb (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 turned on if the input pin is powered with a diode in parallel of the input transistor . power dissipation in the ips : p = rdson rev * i load2 + vcc2 / 250 ( internal input resistor ). if the power dissipation is too high in rifb, a diode in serial can be added to block the current. 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( z p 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 i v p ? ? : power dissipation during active clamp 65v v 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 v v dt di cl battery ? ? : demagnetization current figure 9 gives the maximum inductance versus the load current in the worst case : the part switches off after an over temperature detection. if the load inductance exceeds the curve, a free wheeling diode is required. over-current protection the threshold of the over-current protection is set in order to guarantee 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. www.irf.com 6 downloaded from: http:///
auips7125r 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 C iout1 )/( ifb2 C ifb1) i offset = ifb1 x ratio C 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 downloaded from: http:///
auips7125r 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 downloaded from: http:///
auips7125r www.irf.com 9 vout vcc-vin 80% 20% 80% 20% td on tr td off tf vds ids vcc-vin vcc vds clamp t clamp see application notes to evaluate power dissipation figure 2 C active clamp waveforms figure 1 C in rise time & switching definitions 0 5 10 15 20 25 -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 C protection timing diagram figure 4 C icc off (a) vs tj (c) downloaded from: http:///
auips7125r www.irf.com 10 0 1 2 3 4 5 6 -50-25 0 255075100125150 vih vil 0.01 0.10 1.00 10.00 100.00 1.e-5 1.e-4 1.e-3 1.e-2 1.e-1 1.e+0 1.e+1 1.e+2 figure 8 C 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 figure 7 - normalized rds(on) (%) vs tj (c) tj, junction temperature (c) tj, junction temperature (c) vih and vil (v) 0 2 4 0 1 02 03 04 05 iccoff, supply current (a) 0 vcc-vin, supply voltage (v) figure 5 C icc off(a) vs vcc-vin (v) figure 6 C vih and vil (v) vs tj (c) downloaded from: http:///
auips7125r www.irf.com 11 0.0 1. 0 2.0 3.0 4.0 5.0 6.0 0 1 02 03 04 05 25c 150c -40c 1 10 100 1.e+01 1.e+02 1.e+03 1.e+04 ifb, current feedback current (ma) max. output current (a) 0 inductance (h) iout, output current (a) figure 9 C max. iout (a) vs inductance (h) figure 10 C ifb (ma) vs iout (a) 0.0001 0.001 0.01 0.1 1 10 100 0 1 02 03 04 05 tsd, time to shutdown(s) 0 '-40c '+25c '+125c iout, output current (a) figure 11 C tsd (s) vs i out (a) smd with 6cm2 downloaded from: http:///
auips7125r case outline 5 lead C dpak www.irf.com 12 downloaded from: http:///
auips7125r tape & reel 5 lead C dpak www.irf.com 13 downloaded from: http:///
auips7125r part marking information ordering information standard pack base part number package type form quantity complete part number tube 75 auips7125r tape and reel 2000 auips7125rtr tape and reel left 3000 auips7125rtrl auips7125r d-pak-5-lead tape and reel right 3000 AUIPS7125RTRR www.irf.com 14 downloaded from: http:///
auips7125r 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 irs 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 irs 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 res ponsible 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. only products certified as military grade by the defense logistics agency (dla) of the us department of defense, are designed and manufactured to meet dla military specific ations required by certain military, aerospace or other applications. buyers acknowledge and agree that any use of ir products not certified by dla as military-grade, in applications requiring military gr ade products, is solely at the buyers own ri sk and that they are solely 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 irs 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 15 downloaded from: http:///
auips7125r www.irf.com 16 revision history revision date notes/changes a1 08/03/2010 a2 29/04/2010 correct packing information a3 07/09/2010 update curr ent sensing capability a4 31/05/2011 final release a5 06/06/2011 update ir address downloaded from: http:///

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