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1/12 l9349 september 2002 n quad power low side driver with 2 x 5a and 2 x 3a output current capability n low r dson typically 200m w and 300m w @ t j = 25c n internal output clamping structures with v fb = 50v for fast inductive load current recirculation n limited output voltage slew rate for low emi n protected m p compatible enable and input n wide operating supply voltage range 4.5v to 32v n real time diagnostic functions: C output shorted to gnd C output shorted to v ss C open load detection in on and off condition C load bypass detection C overtemperature detection n device protection functions: C overload disable C selective thermal shutdown n si g nal- and power-ground-loss shutdown description the l9349 is a monolithic integrated quad low side driver realized in an advanced multipowerbcd mixed technology. the device is intended to drive valves in automotive environment. the inputs are m p compatible. particular care has been taken to protect the device against failures, to avoid electromagnetic interferences and to offer ex- tensive real time diagnostic. powerso20 bare die ordering numbers: l9349 L9349DIE1 quad intelligent power low side switch block diagram diagnostic control r qs delay time overload overtemp output control openload 52v r io channel 4 channel 1 channel 2 channel 3 out3 out2 out4 vs out1 in1 d1 en in4 d4 in2 d2 in3 d3 gnd 00at0025
l9349 2/12 pin connection pin description n pin function 1 pgnd power ground 2 out1 output 1 (5a) 3 d1 diagnostic 1 4 in4 input 4 5 vs supply voltage 6 nc not connected 7 in3 input 3 8 d2 diagnostic 2 9 out2 output 2 (5a) 10 pgnd power ground 11 pgnd power ground 12 out3 output 3 (3a) 13 d3 diagnostic 3 14 in2 input 2 15 gnd signal ground 16 en common enable 17 in1 input 1 18 d4 diagnostic 4 19 out4 output 4 (3a) 20 pgnd power ground 20 pgnd 19 out4 d4 18 in1 17 16 en gnd 15 in2 14 13 d3 out3 12 pgnd 11 pgnd 1 out1 2 3 d1 in4 4 vs 5 6 nc in3 7 d2 8 9 out2 pgnd 10 00at0026 heat sink connected to pins 1, 10, 11, 20
3/12 l9349 thermal data absolute maximum ratingsi electrical characteristcs (operating range) the electrical characteristics are valid within the below defined operating range, unless otherwise specified. symbol parameter value unit r th j-case thermal resistance junction to case 3 c/w symbol parameter conditions value unit v s dc supply voltage -0.3 to 32 v v sp supply voltage pulse (duration <200ms) -0.3 to 45 v ? dv s /dt ? supply voltage slope 10 v/ m s v in, en input voltage ? i ? 10ma -1.5 to 6 v v d diagnostic dc output voltage ? i ? 50ma -0.3 to 16 v v odc dc output voltage -0.3 to 45 v i o1, 2 dc output current out 1, 2 5 a i o3, 4 dc output current out 3, 4 3 a i or1, 2 reverse output current -5 a i or3, 4 reverse output current -3 a e o1, 2 switch-off energy for inductive loads t eo = 250 m s, 1) 1) t eo is the clamping time (see figure 1) 50 mj e o3, 4 t = 5ms 30 mj d v gnd gnd potential difference t j = -40 to 150c 0.3 v t jeo junction temperature during switch-off s t 30 min 175 c s t 15 min 190 c t j junction temperature -40 to t jdis c t stg storage temperature -55 to 150 c t jdis thermal disable junction temp. threshold 180 to 210 c esd electrostatical discharging mil883c +-2 kv esd out1 - 4 vs. common-gnd (pgnds + gnd) +-4 kv symbol parameter test condition min. typ. max. unit v s board supply voltage 4.5 12 32 v t j1 junction temperature -40 150 c t j2 junction temperature s t 15min 1) over life time 1) parameters guaranteed by correlation 150 t jdis c
l9349 4/12 electrical characteristics (v s = 4.5 to 32v; -40c t j1 150c < t j2 t jdis , unless other-wise specified.) symbol parameter test conditions values t j1 values t j2 unit min. typ. max. min. max. supply i vs off dc supply current off en = 1.0v 5 10 ma i vs on dc supply current on v s 14v; v in , v en = 2v 8ma diagnostic outputs d1 - d4 v dl diagnostic output low voltage i d 3ma 0.65 1.0 1.5 v i dle diagnostic output leakage current v d = 14v 1) 0.1 2 20 m a outputs out 1 - out 4 r dson 1, 2 output on resistance t j = 25c t j = 150c v s > 9.5v i o1,2 = 2a 200 300 500 m w r dson 3, 4 t j = 25c t j = 150c v s > 9.5v i o3,4 = 1.3a 300 450 750 m w v z z-diode clampin g volta g e i ocl 3 200ma 45 60 v r o output pull down resistor vs > 9.5v en = 0v 10 40 50 k w v ouv 1-4 open load voltage threshold v in = 1v 0.525 x v s 0.55 x v s 0.575 x v s v v ouv hys 1- 4 hysteresis 0.003 x v s v d v ouv 1-4, 2-3, 4-1, 3-2 open load difference voltage threshold v in1,4/2,3 = 1v v s 16v voc ? 4.5v v oc = output voltage of other channel v oc - 1.0v v oc - 1.25v v oc - 1.5v v d v ouv hys 1-4, 2-3, 4-1, 3-2 open load hysteresis 40 mv i ouc 1, 2, 3, 4 open load current threshold v en =v in =2v; v s =6.5 - 16v 160 320 480 ma i ooc 1, 2 over load current threshold v s > 6.5v; v out = 32v 510 a i ooc 3, 4 36 a t sd thermal shut down 180 195 210 c t sd-hys thermal shut down hysteresis 20 c
5/12 l9349 i out-le out leakage current v out = 20v v s = 0v 5 m a inputs in1-4, en v in,en l logic input/enable low voltage -0.3 1 v v in,en h logic input/enable high voltage in, en 2.0 6 v v en,in hys logic input hysteresis 50 100 mv i in input sink current 2v < v in , v en < 6v 2) v in , v en < v s 10 20 40 m a i en enable sink current 10 20 40 m a timing t on output delay on time i o = 1a v s = 12v 3) ) fig. 2 425 m s t f,r output fall and rise time i o = 1a v s = 12v fig. 2 31030 m s t off output delay off time i o = 1a v s = 12v 3) fig. 2 51530 m s t dh-l, diag diag. delay output off time 3) fig. 2 86590 m s t d iou diagnostic open load delay time 9v< v s <16v, fig 3 8 50 m s t dol diagnostic overload delay switch-off time 9v< v s <16v, fig 3 6 65 m s t filt filter time 4 24 m s pgnd pgnd loss,h power gnd loss threshold high 3v pgnd loss,l power gnd loss threshold low 2v 1) the diagnostic output is short circuit protected up to v d = 16v 2) open pins (en, in) are detected as low 3) v s = 9 to 16v i ouc i o i ooc electrical characteristics (continued) (v s = 4.5 to 32v; -40c t j1 150c < t j2 t jdis , unless other-wise specified.) symbol parameter test conditions values t j1 values t j2 unit min. typ. max. min. max.
l9349 6/12 diagnostic table circuit description the l9349 is a quad low side driver for inductive loads like valves in automotive environment. the internal pull down current sources at the enable and input pins assure in case of open input conditions that the device is switched off. an output voltage slope limitation for du/dt is implemented to reduce the emi. an integrated active flyback voltage limitation clamps the output voltage during the flyback phase to 50 v. each driver is protected against short circuit at v out < 32v and thermal overload. in short circuit condition the output will be disabled after a short delay time t dol . the thermal disable for t j > 180c of the output will be reset if the junction temperature decreases about 20c below the disable threshold temperature. the overtemperature, overload and groundloss information is stored until in is low. for the real time error diagnosis the voltage and the current of the outputs are compared with internal fixed val- ues v ouv for off and i ouc for on conditions to recognize open load (r l 3 20k w , r l > 38 w ) in off and on conditions. also the output voltages v o1 - 4 are compared to each other output in off condition with a fixed offset of d v ouv to recognize load bypasses. the d v ouv diagnoses is suppressed during the flyback phases of the compared output. the outputs 1 and 4 are compared for d v ouv and also outputs 2 and 3 are compared. the diagnostic output level in connection with different enable and input conditions allows to recognize differ- ent fail states, like overtemp, short to v s , short to gnd, bypass to gnd and disconnected load (see diagnostic table). the diagnostic output is protected against short circuit. exceeding the over load current threshold i ooc , the out- put current will be limited internally during the diagnostic overload delay switch-off time t dol . the device complies the i so pulses imposed to the supply voltage of the valves without any failures of the func- tionality. therefore some diagnostic functions are internal filtered. the following table shows the corresponding filter time for each detected signal. conditions en in out diag. normal function l x off l hloffl hhonh gnd short v otyp < 0.55vs l x off h load bypass d v o1-4/2-3 3 1.25v hloffh open load i o1,2,3,4typ < 320ma hhonl t jtyp 3 190c overtemperature xxoffl over load i omin 1,2 > 5a i omin 3,4 > 3a hhoffl sgnd or pgnd loss channel off x l off h sgnd or pgnd loss channel on h h off l
7/12 l9349 figure 1. t eo clamping time on state en and in = high off state en or in, = low min. filter time reset done by overloading of output (also shorted load to supply) x 4 m s inx = low open load (under voltage detection) x- open load (under current detection) x- overtemperature x 4 m s inx = low power-signal gnd-loss x 4 m s inx = low power- signal-gnd-loss x 4 m s openload difference x 4 m s v o1-4 t v ocl v s t eo t 00at0027
l9349 8/12 figure 2. output slope (resistive load for testing) figure 3. timing (t dol , t diou ) v in t v h v l 5v v out t v ouv 0.15v s t on t off v diag 0.5v d v d t d h-l diag 00at0030 v s 0.85v s t f t r v en in v on i ooc v d i ouc open load current t dol t diou 00at0032 t filt
9/12 l9349 figure 4. block diagram - open load voltage detection r io r io out1 (out2) l 1 (l 2 ) l 4 (l 3 ) v batt out4 (out3) + + r latch s q r latch q s v s 55% enable in 4 in 1 vo uv1 vo uv4 00at0033
l9349 10/12 figure 5. logic diagram figure 6. application circuit diagram open load current normal operation on open load current open load current latch reset normal operation on open load voltage normal operation off open load voltage io o v in vo u io u v d v en latched over. load diagnostic 00at0034 diagnostic control r qs delay time overload overtemp output control openload 52v r io channel 4 channel 1 channel 2 channel 3 out3 out2 out4 vs out1 z valve z valve z valve z valve +45v v batt kl30 kl15 in1 d1 en +5v m p controller v cc i/o i/o i/o in4 i/o d4 i/o +5v in2 d2 i/o i/o +5v in3 d3 i/o i/o +5v gnd gnd 00at0035
11/12 l9349 outline and mechanical data e a2 a e a1 pso20mec detail a t d 110 11 20 e1 e2 h x 45 detail a lead slug a3 s gage plane 0.35 l detail b r detail b (coplanarity) gc - c - seating plane e3 b c n n h bottom view e3 d1 dim. mm inch min. typ. max. min. typ. max. a 3.6 0.142 a1 0.1 0.3 0.004 0.012 a2 3.3 0.130 a3 0 0.1 0.000 0.004 b 0.4 0.53 0.016 0.021 c 0.23 0.32 0.009 0.013 d (1) 15.8 16 0.622 0.630 d1 9.4 9.8 0.370 0.386 e 13.9 14.5 0.547 0.570 e 1.27 0.050 e3 11.43 0.450 e1 (1) 10.9 11.1 0.429 0.437 e2 2.9 0.114 e3 5.8 6.2 0.228 0.244 g 0 0.1 0.000 0.004 h 15.5 15.9 0.610 0.626 h 1.1 0.043 l 0.8 1.1 0.031 0.043 n 8? (typ.) s 8? (max.) t 10 0.394 (1) d and e1 do not include mold flash or protusions. - mold flash or protusions shall not exceed 0.15mm (0.006) - critical dimensions: e, g and a3. powerso20 0056635 jedec mo-166 weight: 1.9gr
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