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AUIR3200S 1 www.irf.com ? 201 2 international rectifier november 02, 2012 automotive grade mosfet driver with protection and diagnostic features ? boo t strap and charge pump ? o ver temperature shutdown (with p tc interface ) ? short circuit protection (vds detection) ? reverse battery protection (turns on the mosfet) ? diagnostic ? esd protection descript ion the auir3200 s is a high side mosfet driver for very low rdson automotive application. it offers over - current, over - temperature protection and diagnostic. the over - current protection is done by monitoring the vds voltage, the threshold is programmable b y external resistor. the over - temperature protection uses a thermal sensor. the au ir 3200s offers diagnostic on the input pin. product summary operating voltage 6- 36v vgate 6v package so8 ordering inf ormation base part number package type standard pack complete part number form quantity AUIR3200S soic - 8 leads tube 95 auir3 200s tape and reel 2500 auir3 20 0str
AUIR3200S 2 www.irf.co m ? 201 2 international rectifier november 02, 2012 typical connection cboot load +bat input signal v diag rdiag g s in/dg gnd vcc ptc vds rin rvds ptc AUIR3200S rgate mosfet logic level 100nf
AUIR3200S 3 www.irf.co m ? 201 2 international rectifier november 02, 2012 absolute maximum ratings absolute ma ximum ratings indicate sustained limits beyond which damage to the device may occur. all voltage parameters are referenced to ground lead. ( tj= - 40c..150c unless otherwise specified). symbol parameter min. max. units vcc - gnd maximum vcc voltage - 0.3 60 v vcc - vds maximum vds pin voltage - 0.3 5.5 vcc - vptc maximum ptc pin voltage - 0.3 5.5 vin - gnd maximum in pin voltage - 0.3 5.5 vcc - vs maximum s pin voltage - 0.3 60 vcboot - vs maximum cboot pin voltage - 0.3 8 vcc cont. maximum continuous vcc voltage ? 36 tj max. maximum operating junction temperature - 40 150 c maximum storage temperature - 55 150 tsoldering soldering temperature (10 seconds) ? 300 thermal characteristics symbol parameter typ. max. units rth thermal resistance junction to am bient 100 ? c/w recommended operating conditions symbol parameter min. max. units vih high level input voltage 2.7 5.5 v vil low level input voltage 0 0.9 rin recommended resistor in series with in pin 10 15 k ? rdiag recommended resistor in series with diag pin 4 15
AUIR3200S 4 www.irf.co m ? 201 2 international rectifier november 02, 2012 static electrical characteristics tj= - 40c ..1 25c, vcc= 6 - 36 v (unless otherwise specified), typical value are given for vcc=14v and tj=25c. symbol parameter min. typ. max. units test conditions vcc op. operating voltage range 6 ? 36 v icc off supply current in sleep mode tj=25c ? 1 5 a vcc=14v , vin =0v icc on supply current when on ? 10 15 ma vin=5v, vptc=vbat, vds=vbat vih in high threshold voltage ? 2 2.6 v vil in low threshold voltage 0.5 1.7 2.1 in hyst. input hysteresi s 0.2 0.5 1 iin on on state input current ? 33 50 a vin=5v vgs gate output voltage 5 5.7 ? v igs=0a vgs rev gate output voltage during reverse battery tj= 25c 4.5 5.6 ? igs=50a , vbat= 14v vin, off input voltage when the part is in fault mode ? 0.2 5 0.4 idg= 300 a protection characteristics tj= - 40c..1 25c, vcc= 6 - 36 v (unless otherwise specified) , typical value are given for vcc=14v and tj=25c. symbol parameter min. typ. max. units test conditions ivds vds current reference 0.7 0. 8 0.91 ma vcc - v ds=0v , tj= - 40c 0. 8 4 0.93 1. 0 5 vcc - vds=0v , tj=25c 1 1.15 1.33 vcc - vds=0v , tj=125c vds offset vds comparator offset - 1 0 0 1 0 mv t blank on vds detection blanking time during turn on 1 5 22 35 s vptc ptc comparator voltage threshold (vcc - vptc) 1.5 2 2.5 v vin=5v, vcc=14v rptc pull down resistor on the ptc pin 4 10 20 k ? t diag diagnostic time ? 10 ? ms see figure 2 t sleep time to enter in sleep mode 7 15 30 see figure 2 t reset time to enter in sleep mode and reset the fault ? 5 ? see f igure 2 t wkp time to leave the sleep mode 0.5 ? ? s rin=10k see figure 3 & 4 t pw r on rst power on reset duration tj=25c 40 100 200 s uv under voltage t hreshold ? 5.2 5.9 v t uv hold time to keep uv detection active 150 350 600 s
AUIR3200S 5 www.irf.co m ? 201 2 international rectifier november 02, 2012 switching ch aracteristics tj= - 40..125c, vcc=6.. 3 6v (unless otherwise specified), typical value are given for vcc=14v and tj=25c. symbol parameter min. typ. max. units test conditions t don turn - on delay to 20% of vgs ? 1.6 ? s qg=220nc, rgate= 0 ? t r rise time 2 0% t o 8 0% of vgs ? 1 ? t doff turn off delay time to 8 0% of vgs ? 2 ? t f fall time from 80% to 20% of v gs ? 1 ? igs + gate output high pulsed current 100 160 ? ma vg s =0v ig s - gate output low pulsed current 100 130 ? vg s = 5.7 v iboot cboot capacitor ch arge current 0.35 0.8 ? a vboot - source cboot capacitor charge voltage 5.6 6 ? v true table operating conditions in out dg normal on h h h normal off l l l short circuit to gnd h l l short circuit to gnd l l l over - temperature h l l over - temperat ure l l l
AUIR3200S 6 www.irf.co m ? 201 2 international rectifier november 02, 2012 lead assignments functional block diagram all values are typical + - 75v boot strap regulat or 11v 6v 6v 6v 1ma level shifter + - vcc - 6v vcc - 6v vcc - 2v uv 4 clk c oun ter in/dg vcc 150k ? charge pump 2v 1.7v 6 v gnd 75v ptc vds g s cboot s r q q diagnostic sleep mode 100 ? 10k ? t blanking on driver
AUIR3200S 7 www.irf.co m ? 201 2 international rectifier november 02, 2012 over - current protection the over - current protection is done by monitoring the vds voltage of the mosfet. the thres hold is adjusted by connecting the appropriate resistor between vcc and vds pin. b elow the formula to set the appropriate over - current threshold: _ ivds rvds isd threshold rdson = the ivds has a positive temperature coefficient to compensate the positive tempera ture coefficient of the rdson of the mosfet. the above formula is only valid when the mosfet is fully on. therefore d uring the turn on of the mosfet , the time ?tblank on? disable the vds protection until the m osfet is f ully on. over - temperature protection the temperature protection uses a ptc sensor connected to the tab or the drain of the mosfet depending on the mounting. the purpose is to maximize the thermal interface between the sensor and the junction. the ptc sensor, the vds threshold and the mosfet must be chosen in order to not exceed the maximum junction temperature of the mosfet during a short circuit. protection is evaluated by switching the mosfet on different current s and by evaluat ing the junction temperature when the mosfet is switched off by the protections. this gives the following drawing. for high impedance short circuit, vds is smaller than vds threshold, so the over - temperature will act. for low impedance short circuit, the vds protection will switch off the mosfet. at the transition c urrent between the 2 protections the junction temperature of the mosfet is the maximum and should be lower than the maximum rating. figure 1 junction temperature at switch off sh ort circuit current over - temperature protection over - current protection
AUIR3200S 8 www.irf.co m ? 201 2 international rectifier november 02, 2012 sleep_mode / diagnostic sleep_mode block manages the diagnostic and the sleep_mode. the dev ice enters in sleep mode if input is inactive during a delay higher than tsleep. in diag internal diag out tdiag tdiag sleep mode fault mode normal mode treset tsleep figure 2 wake up sequence to wake up the part from the sleep mode, the input must be activated at least during twkp, then the boo t strap regulator is switched on and the boo t strap capacitor is charged. the output will not be activated during tpw on rst. in out sleep mode normal mode t pw on rst t wkp t sleep sleep mode figure 3 in out sleep mode normal mode tpw on rst twkp fig ure 4
AUIR3200S 9 www.irf.co m ? 201 2 international rectifier november 02, 2012 bootstrap the bootstrap capacitor provides the necessary current to the driver in order to charge the gate capacitor to the right voltage level. a design rule to select the bootstrap capacitor value is to choose 10 times the gate capacitance. you can find in the m osfet datasheet ?qg max? for a specific vgs. u se this equation t o calculate cboot value : max 10 qg cboot vgs = the AUIR3200S integrates a bootstrap regulator to maintain a fixed voltage (vboot=6v) on the bootstrap capacitor for any battery voltage. the regulator is off during the sleep mode to reduce the curren t consumption. the power on reset is necessary to charge the bootstrap capacitor before turns on the power mosfet. the bootstrap capacitor gets its charge through the load. so the time to charge it depends of the load. but the power on reset doesn?t mon itor the bootstrap capacitor voltage. its time is set internally to allow starting the most of load witho ut implement a special sequence: t he power on reset is long enough to charge the bootstrap capacitor before turns on the power mosfet. cboot vcc out 6 .6 v load iboot vboot 4ma figure 5 figure 6 charged v in v g power on reset time time to charge the bootstrap capacitor charged v in v gs power on reset time time to charge the bootstrap capacitor v boo t
AUIR3200S 10 www.irf.co m ? 201 2 international rectifier november 02, 2012 if the inductance of the load is too important , the power on reset is not enough long to charge completely the bootstrap capacitor before turns on the power mosfet. so the micro - processor n eed to implement a special sequence to start the device without activates the output power mosfet. the micro - processor send one short pulse (twk p min < short pulse < tpwr_on_rst) then wait for the bootstrap capacitor is totally charged and after provide t he appropriate duty cycle. the bootstrap charge depends of the battery voltage, the bootstrap capacitor value and the inductance load value . figure 7 charged v boot v in v g power on reset time time to charge the bootstrap capacitor charged v v in v gs power on reset time time to charge the bootstrap capacitor t wak e min
AUIR3200S 11 www.irf.co m ? 201 2 international rectifier november 02, 2012 in frequency and duty cycle the vds protection is not active if t he time on is lower tha n tblank on. so t he minimum time on (ton) is ?tblank on max? to be sure that th is protection will be active . the times off (toff) needs to be setup for assure that the capacitor bootstrap will be recharge d up to 6v. the bootstrap t ime charge depends of the bootstrap capacitor value and the inductance load value. figure 8 if the capacitor is discharged at the turn on of the mosfet , the AUIR3200S will detect a fault (vds protection) after tblank on because the mo sfet won?t be fully on. figure 9 vds threshold ton toff in vboot vdiag normal mode 0v vds mosfet 0v 6v tblank on tblank on in vboot vdiag fault mode normal mode 0v vds mosfet 0v v ds threshold vds > vds threshold
AUIR3200S 12 www.irf.co m ? 201 2 international rectifier november 02, 2012 under voltage protection in short - circuit mode during short circuit condition, it may happen that the supply voltage drop s below the under voltage before the short is detected by the vds protection due to th e blanking time ?tblank on?. in under voltage condition the AUIR3200S turn s off the m osfet . the time ?tblank on? is reset. figure 1 0 in order to detect the short circuit condition, the AUIR3200S has a counter and after 4 ?under voltage? dete ctions, the part is latch ed and the fault diagnostic is activated . the counter is reset when the part goes to sleep mode. figure 1 1 in vcc uv 0v vds mosfet 0v tblank o n t uv hold tblank o n in vcc vdiag sleep mode fault mode normal mode uv 0v v ds mosfet 0v
AUIR3200S 13 www.irf.co m ? 201 2 international rectifier november 02, 2012 pwm operation ( tonAUIR3200S integrates a counter which is incremented by the input signal and reset when the vds voltage is below the vds th reshold. the counter latches off the AUIR3200S after 4 activations . during pwm operation ( ton< tblank on) on a short circuit, the vds is always above the vds threshold and 4 activations on the input will latch the AUIR3200S and the fault diagnostic is act ivated. figure 1 2 in vdiag fault mode normal mode vds th v ds mosfet 0v 1 2 3 4 AUIR3200S 14 www.irf.co m ? 201 2 international rectifier november 02, 2012 tj, junction temperature (c) figure 1 3 : icc off (a) vs tj (c) vcc=14v,vin=0v) icc off, supply leakage current (a) 0 1 2 3 -50 -25 0 25 50 75 100 125 150 vih vil tj, junction temperature (c) vih and vil (v) figure 1 4 : vih and vil (v) vs tj (c) 0 0 0 1 1 1 1 1 2 2 2 -40 10 60 110 iccoff 0 1 2 3 4 5 6 7 0 10 20 30 vcc, operating voltage, v vgs, utput gate voltage, v figure 1 5 : vgs vs vcc with ivgs=50a parameters curves : typical value
AUIR3200S 15 www.irf.co m ? 201 2 international rectifier november 02, 2012 case outline ? so8 tape & reel so8
AUIR3200S 16 www.irf.co m ? 201 2 international rectifier november 02, 2012
AUIR3200S 17 www.irf.co m ? 201 2 international rectifier november 02, 2012 part marking information qualification in formation ? qualification level automotive (per aec - q100) comments: this family of ics has passed an automotive qualification. ir?s industrial and consumer qualification level is granted by extension of the higher automotive level. moisture sensitivity level soic 8n msl 2 260c (per ipc/jedec j - std - 020) esd machine model class m1b(+/ - 100v) (per aec - q100 - 003 ) human body model class h1c (+/ - 1500v) ( per aec - q100 - 002 ) charged device model class c4 (+/ - 1000v) (per aec - q100 - 011 ) ic latch - up test class i i , level a (per aec - q100 - 004 ) rohs compliant yes ? qualification standards can be found at international rectifier?s web site http://www.irf.com/
AUIR3200S 18 www.irf.co m ? 201 2 international rectifier november 02, 2012 important notice unless specifically designated for the automotive mar ket, international rectifier corporation and its subsidiaries (ir) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or services witho ut 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 specifications 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 requirements, testing of all parameters of each product is not necessarily performed. ir assumes no liability for applications assistance or customer product des ign. 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, limitations, and notices. reproduction of this information with alterations is an unfair and deceptive busines s 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 fo r 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, inten ded, 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 t he 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 distributo rs harmless 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 specifications 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 grade products, is solely at the buyer?s own 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 automotive applications or environments unless the specific ir products are designated by ir a s 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 suc h requirements. for technical support, please contact ir?s technical assistance center http://www.irf.com/technical - info/ world headquarters: 101 n. sepulveda blvd ., el segundo, california 90245 tel: (310) 252 - 7105
AUIR3200S 19 www.irf.co m ? 201 2 international rectifier november 02, 2012 revision history revision date notes/changes a n ovember 2, 2012 initial release

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