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www.irf.com 1 AUIRF7738L2TR AUIRF7738L2TR1 automotive directfet power mosfet automotive grade hexfet ? is a registered trademark of international rectifier. ? advanced process technology ? optimized for automotive motor drive, dc-dc andother heavy load applications ? exceptionally small footprint and low profile ? high power density ? low parasitic parameters ? dual sided cooling ? 175c operating temperature ? repetitive avalanche capability for robustness andreliability ? lead free, rohs compliant and halogen free ? automotive qualified * applicable directfet ? outline and substrate outline directfet ? isometric sb sc m2 m4 l4 l6 l8 dd g s s s s s s descriptionthe auirf7738l2 combines the latest automotive hexfet? power mosfet silicon technology with the advanced directfet? packaging technology to achieve exceptional performance in a package that has the footprint of a dpak (to-252aa) and only 0.7 mm profile. the directfet ? package is compatible with existing layout geometries used in power applications, pcb assembly equipment and vapor phase, infra-red or convection soldering techniques, when application note an-1035 is followed regarding the manufacturing methods and processes.the directfet ? package allows dual sided cooling to maximize thermal transfer in automotive power systems. this hexfet power mosfet is designed for applications where efficiency and power density are of value. the advanced directfet? packaging platform coupled with the latest silicon technology allows the auirf7738l2 to offer substantial system level savings and performance improvement specifically in motor drive, high frequency dc-dc and other heavy load applications on ice, hev and ev platforms. this mosfet utilizes the latest processing techniques to achieve low on-resistance and low qg per silicon area. additional features of this mosfet are 175c operating junction temperature and high repetitive peak current capability. these features combine to make this mosfet a highly efficient, robust and reliable device for high current automotive applications. v (br)dss 40v r ds(on) typ. 1.2m max. 1.6m i d (silicon limited) 184a q g 129nc parameter units v ds drain-to-source voltage v gs gate-to-source voltage i d @ t c = 25c continuous drain current, v gs @ 10v (silicon limited) i d @ t c = 100c continuous drain current, v gs @ 10v (silicon limited) i d @ t a = 25c continuous drain current, v gs @ 10v (silicon limited) i d @ t c = 25c continuous drain current, v gs @ 10v (package limited) i dm pulsed drain current p d @t c = 25c power dissipation p d @t a = 25c power dissipation e as single pulse avalanche energy (thermally limited) e as (tested) single pulse avalanche energy tested value i ar avalanche current a e ar repetitive avalanche energy mj t p peak soldering temperature t j operating junction and t stg storage temperature range thermal resistance parameter typ. max. units r ja junction-to-ambient CCC 45 r ja junction-to-ambient 12.5 CCC r ja junction-to-ambient 20 CCC r jcan junction-to-can CCC 1.6 r j-pcb junction-to-pcb mounted CCC 0.5 linear derating factor w/c max. 184 130 736 538 134 40 20 315 0.63 3594 3.3 270 -55 to + 175 see fig.18a, 18b, 16, 17 v a mj c/w w c absolute maximum ratings stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. these are stress ratings only; and functional operation of the device at these or any other condition beyond those indicated in the specifications is not implied.exposure to absolute- maximum-rated conditions for extended periods may affect device reliability. the thermal resistance and power dissipation ratings are measured under board mounted and still air conditions. ambient temperature (t a ) is 25c, unless otherwise specified. downloaded from: http:///
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surface mounted on 1 in. square cu (still air).
with small clip heatsink (still air) mounted on minimum footprint full size board with metalized back and with smallclip heatsink (still air) notes through are on page 9 d s g static characteristics @ t j = 25c (unless otherwise stated) parameter min. t y p. max. units v (br)dss drain-to-source breakdown volta g e 40 CCC CCC v ? v (br)dss / ? t j breakdown volta g e temp. coefficient CCC 0.02 CCC v/c r ds(on) static drain-to-source on-resistance CCC 1.2 1.6 m v gs(th) gate threshold volta g e 2.0 3.0 4.0 v ? v gs(th) / ? t j gate threshold voltage coefficient CCC -8.4 CCC mv/c gfs forward transconductance 113 CCC CCC s r g gate resistance CCC 1.0 CCC i dss drain-to-source leaka g e current CCC CCC 5 CCC CCC 250 i gss gate-to-source forward leaka g e CCC CCC 100 gate-to-source reverse leakage CCC CCC -100 dynamic characteristics @ t j = 25c (unless otherwise stated) parameter min. t y p. max. units q g total gate char g e CCC 129 194 q gs1 pre-vth gate-to-source charge CCC 27 CCC q gs2 post-vth gate-to-source charge CCC 10 CCC see fig.11 q gd gate-to-drain ("miller") char g e CCC 45 CCC q godr gate charge overdrive CCC 47 CCC q sw switch charge (q gs2 + q gd ) CCC 55 CCC q oss output charge CCC 54 CCC nc t d(on) turn-on dela y time CCC 21 CCC t r rise time CCC 77 CCC t d(off) turn-off dela y time CCC 39 CCC t f fall time CCC 38 CCC c iss input capacitance CCC 7471 CCC c oss output capacitance CCC 1640 CCC c rss reverse transfer capacitance CCC 737 CCC c oss output capacitance CCC 5936 CCC c oss output capacitance CCC 1465 CCC c oss eff. effective output capacitance CCC 2261 CCC diode characteristics @ t j = 25c (unless otherwise stated) parameter min. typ. max. units i s continuous source current (body diode) a i sm pulsed source current (body diode) v sd diode forward voltage CCC CCC 1.3 v t rr reverse recovery time CCC 50 75 ns q rr reverse recovery charge CCC 68 102 nc i f = 109a, v dd = 20v di/dt = 100a/s i s = 109a, v gs = 0v i d = 109a v ds = 16v, v gs = 0v v dd = 20v, v gs = 10v i d = 109a r g = 1.8 ? = 1.0mhz v gs = 0v, v ds = 0v to 32v conditions na conditions v gs = 0v, i d = 250a reference to 25c, i d = 1ma v gs = 10v, i d = 109a v ds = 40v, v gs = 0v, t j = 125c v gs = -20v p-n junction diode. mosfet symbol conditions v gs = 0v v ds = 25v showing the integral reverse v gs = 0v, v ds = 1.0v, f=1.0mhz v gs = 0v, v ds = 32v, f=1.0mhz CCC CCC 184 736 pf v ds = v gs , i d = 250a CCC CCC a nc ns v ds = 10v, i d = 109a v ds = 20v, v gs = 10v v gs = 20v v ds = 40v, v gs = 0v downloaded from: http:///
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"#"$%&$ ' qualification information ? large-can msl1 rohs compliant yes esd machine model class m4 (+/- 800v) (per aec-q101-002) human body model class h2 (+/- 4000v) (per aec-q101-001) charged device model n/a (per aec-q101-005) moisture sensitivity level qualification level automotive (per aec-q101) ?? comments: this part number(s) passed automotive qualification. irs industrial and consumer qualification level is granted by extension of the higher automotive level. downloaded from: http:///
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fig 2. typical output characteristics fig 1. typical output characteristics fig 3. typical on-resistance vs. gate voltage fig 4. typical on-resistance vs. drain current fig 6. normalized on-resistance vs. temperature fig 5. typical transfer characteristics 0.1 1 10 100 v ds , drain-to-source voltage (v) 1 10 100 1000 10000 i d , d r a i n - t o - s o u r c e c u r r e n t ( a ) vgs top 15v 10v 8.0v 7.0v 6.0v 5.5v 5.0v bottom 4.5v 60s pulse width tj = 25c 4.5v 3 4 5 6 7 8 v gs , gate-to-source voltage (v) 1 10 100 1000 i d , d r a i n - t o - s o u r c e c u r r e n t ( a ) t j = -40c tj = 25c tj = 175c v ds = 25v 60s pulse width -60 -40 -20 0 20 40 60 80 100 120 140 160 180 t j , junction temperature (c) 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 r d s ( o n ) , d r a i n - t o - s o u r c e o n r e s i s t a n c e ( n o r m a l i z e d ) i d = 109a v gs = 10v 0.1 1 10 100 v ds , drain-to-source voltage (v) 10 100 1000 10000 i d , d r a i n - t o - s o u r c e c u r r e n t ( a ) 60s pulse width tj = 175c 4.5v vgs top 15v 10v 8.0v 7.0v 6.0v 5.5v 5.0v bottom 4.5v 4 6 8 10 12 14 16 18 20 v gs, gate -to -source voltage (v) 0 1 2 3 4 r d s ( o n ) , d r a i n - t o - s o u r c e o n r e s i s t a n c e ( m ) i d = 109a t j = 25c t j = 125c 5 30 55 80 105 130 155 180 205 i d , drain current (a) 0.8 1.0 1.2 1.4 1.6 1.8 2.0 r d s ( o n ) , d r a i n - t o - s o u r c e o n r e s i s t a n c e ( m ) t j = 25c t j = 125c vgs = 10v downloaded from: http:///
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fig 7. typical threshold voltage vs. junction temperature fig 8. typical source-drain diode forward voltage fig 9. typical forward transconductance vs. drain current fig 10. typical capacitance vs.drain-to-source voltage fig.11 typical gate charge vs.gate-to-source voltage fig 12. maximum drain current vs. case temperature -75 -50 -25 0 25 50 75 100 125 150 175 t j , temperature ( c ) 1.5 2.5 3.5 4.5 5.5 v g s ( t h ) , g a t e t h r e s h o l d v o l t a g e ( v ) i d = 1.0a id = 10ma id = 1.0ma id = 250a 0.2 0.4 0.6 0.8 1.0 1.2 v sd , source-to-drain voltage (v) 1.0 10 100 1000 i s d , r e v e r s e d r a i n c u r r e n t ( a ) t j = -40c tj = 25c tj = 175c v gs = 0v 0 20 40 60 80 100 120 140 160 i d ,drain-to-source current (a) 0 50 100 150 200 250 300 350 400 g f s , f o r w a r d t r a n s c o n d u c t a n c e ( s ) t j = 25c t j = 175c v ds = 10v 380s pulse width 1 10 100 v ds , drain-to-source voltage (v) 100 1000 10000 100000 c , c a p a c i t a n c e ( p f ) v gs = 0v, f = 1 mhz c iss = c gs + c gd , c ds shorted c rss = c gd c oss = c ds + c gd c oss c rss c iss 0 25 50 75 100 125 150 175 q g , total gate charge (nc) 0 2 4 6 8 10 12 14 v g s , g a t e - t o - s o u r c e v o l t a g e ( v ) v ds = 32v v ds = 20v vds= 8v i d = 109a 25 50 75 100 125 150 175 t c , case temperature (c) 0 20 40 60 80 100 120 140 160 180 200 i d , d r a i n c u r r e n t ( a ) downloaded from: http:///
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fig 14. maximum avalanche energy vs. temperature fig 13. maximum safe operating area fig 15. maximum effective transient thermal impedance, junction-to-case fig 16. typical avalanche current vs.pulsewidth 25 50 75 100 125 150 175 starting t j , junction temperature (c) 0 100 200 300 400 500 600 e a s , s i n g l e p u l s e a v a l a n c h e e n e r g y ( m j ) i d top 17a 29a bottom 109a 1e-006 1e-005 0.0001 0.001 0.01 0.1 t 1 , rectangular pulse duration (sec) 0.001 0.01 0.1 1 10 t h e r m a l r e s p o n s e ( z t h j c ) c / w 0.20 0.10 d = 0.50 0.02 0.01 0.05 single pulse ( thermal response ) notes: 1. duty factor d = t1/t2 2. peak tj = p dm x zthjc + tc j j 1 1 2 2 3 3 r 1 r 1 r 2 r 2 r 3 r 3 ci i / ri ci= i / ri c 4 4 r 4 r 4 ri (c/w) i (sec) 0.00399 18.815170.81430 0.03055 0.15982 0.00014 0.62239 0.00402 1.0e-06 1.0e-05 1.0e-04 1.0e-03 1.0e-02 1.0e-01 tav (sec) 0.1 1 10 100 1000 a v a l a n c h e c u r r e n t ( a ) 0.05 duty cycle = single pulse 0.10 allowed avalanche current vs avalanche pulsewidth, tav, assuming ? j = 25c and tstart = 150c. 0.01 allowed avalanche current vs avalanche pulsewidth, tav, assuming ? tj = 150c and tstart =25c (single pulse) 0.10 1 10 100 v ds , drain-to-source voltage (v) 1 10 100 1000 10000 i d , d r a i n - t o - s o u r c e c u r r e n t ( a ) operation in this area limited by rds(on) tc = 25c tj = 175c single pulse 100sec 1msec 10msec dc downloaded from: http:///
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fig 17. maximum avalanche energy vs. temperature notes on repetitive avalanche curves , figures 16, 17:(for further info, see an-1005 at www.irf.com) 1. avalanche failures assumption: purely a thermal phenomenon and failure occurs at a temperature far in excess of t jmax . this is validated for every part type.2. safe operation in avalanche is allowed as long ast jmax is not exceeded. 3. equation below based on circuit and waveforms shown in figures 18a, 18b. 4. p d (ave) = average power dissipation per single avalanche pulse.5. bv = rated breakdown voltage (1.3 factor accounts for voltage increase during avalanche). 6. i av = allowable avalanche current. 7. ? t = allowable rise in junction temperature, not to exceed t jmax (assumed as 25c in figure 16, 17). t av = average time in avalanche. d = duty cycle in avalanche = t av f z thjc (d, t av ) = transient thermal resistance, see figure 15) p d (ave) = 1/2 ( 1.3bvi av ) = t/ z thjc i av = 2 t/ [1.3bvz th ] e as (ar) = p d (ave) t av fig 18b. unclamped inductive waveforms fig 18a. unclamped inductive test circuit t p v (br)dss i as fig 19a. gate charge test circuit fig 19b. gate charge waveform v ds 90%10% v gs t d(on) t r t d(off) t f fig 20a. switching time test circuit fig 20b. switching time waveforms vds vgs id vgs(th) qgs1 qgs2 qgd qgodr r g i as 0.01 t p d.u.t l v ds + - v dd driver a 15v 20v v gs 1k vcc dut 0 l s 20k
1 0.1 %
+ - 25 50 75 100 125 150 175 starting t j , junction temperature (c) 0 20 40 60 80 100 120 140 160 e a r , a v a l a n c h e e n e r g y ( m j ) top single pulse bottom 1.0% duty cycle i d = 109a downloaded from: http:///
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? please see an-1035 for directfet ? assembly details and stencil and substrate design recommendations g = gate d = drain s = source g d s dd dd d ss s ss downloaded from: http:///
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! please see an-1035 for directfet ? assembly details and stencil and substrate design recommendations automotive directfet ? part marking note: for the most current drawing please refer to ir website at http://www .irf.com/package/ "au" = gate and automotive marking part number logo batch number date code line above the last character of the date code indicates "lead-free" l1 0.159 3.95 4.05 0.155 l2 0.214 5.35 5.45 0.210 code ab c d e f g h j k l m r p 0.0170.029 0.003 0.007 0.0570.104 0.2360.048 0.0260.024 max 0.3600.280 0.38 0.68 0.02 0.09 1.35 2.55 5.90 1.18 0.55 0.58 min 9.05 6.85 0.420.74 0.08 0.17 1.452.65 6.001.22 0.650.62 max 9.157.10 0.015 0.027 0.003 0.001 0.100 0.053 0.232 0.046 0.023 0.022 min 0.270 0.356 metric imperial dimensions 0.98 1.02 0.73 0.77 0.040 0.039 0.030 0.029 downloaded from: http:///
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automotive directfet ? tape & reel dimension (showing component orientation). click on this section to link to the appropriate technical paper. click on this section to link to the directfet ? website. surface mounted on 1 in. square cu board, steady state. t c measured with thermocouple mounted to top (drain) of part. repetitive rating; pulse width limited by max. junction temperature. starting t j = 25c, l = 0.022mh, r g = 50 , i as = 109a. pulse width 400s; duty cycle 2%. used double sided cooling, mounting pad with large heatsink. mounted on minimum footprint full size board with metalized back and with small clip heatsink.
r is measured at t j of approximately 90c. reel dimensions note: controlling dimensions in mm std reel quantity is 4000 parts. (ordered as AUIRF7738L2TR). for 1000 parts on 7" reel, order AUIRF7738L2TR1 max n.cn.c 0.520 n.c 3.940 0.880 0.720 0.760 imperial min 330.00 20.20 12.80 1.50 99.00 n.c 16.4015.90 standard option (qty 4000) code a b c d e f g h max n.cn.c 13.20 n.c 100.00 22.40 18.40 19.40 min 12.992 0.795 0.504 0.059 3.900 n.c 0.650 0.630 metric min 7.0000.795 0.331 0.059 2.460 n.c n.c 0.630 tr1 option (qty 1000) max n.cn.c 13.50 2.50 n.cn.c n.c n.c min 177.80 20.20 12.98 1.50 62.48 n.cn.c 16.00 metric max n.cn.c 0.50 n.cn.c 0.53 n.cn.c imperial loaded tape feed direction note: controlling dimensions in mm code a bc d e f g h imperial min 4.69 0.1540.623 0.291 0.2830.390 0.059 0.059 max 12.10 4.10 16.30 7.607.40 10.10 n.c 1.60 min 11.90 3.90 15.90 7.407.20 9.90 1.501.50 metric dimensions max 0.476 0.161 0.6420.299 0.291 0.398 n.c 0.063 downloaded from: http:///
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important notice unless specifically designated for the automotive market, 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 tim e and to discontinue any product or services without notice. part numbers designated with the au prefix follow automotive indus try and / or customer specific requirements with regards to product discontinuance and process change notification. all products ar e 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 specifications 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 warr anty. 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 design. customers are responsible for their products an d applications using ir components. to minimize the risks with customer products and applications, customers should provide ad- equate 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 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 serv ice voids all express and any implied warranties for the associated ir product or service and is an unfair and deceptive businesspractice. 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 b ody, 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, aff iliates, and distributors 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. ir products are neither designed nor intended for use in military/aerospace applications or environments unless the ir products are specifically designated by ir as military-grade or enhanced plastic. only products designated by ir as military-grade meet m ilitary specifications. buyers acknowledge and agree that any such use of ir products which ir has not designated as military-grade is solely at the buyers risk, and that they are solely responsible for compliance with all legal and regulatory requirements in c onnection 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 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: 233 kansas st., el segundo, california 90245 tel: (310) 252-7105 downloaded from: http:///

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