target datasheet tle 6215 g v3 page 19.06.2001 1 smart two channel low-side switch features product summary power limitation overtemperature protection overload protection short circuit protection diagnostic feedback overvoltage protection c compatible input e lectro s tatic d ischarge (esd) protection application all kinds of resistive and inductive loads (relays,electromagnetic valves) c compatible power switch solenoid control switch in automotive and industrial control systems general description double channel low-side-switch in smart power technology (spt) with two seperate inputs and two open drain dmos output stages. the tle 6215 g is fully protected by embedded protection functions and designed for automotive and industrial appl i cations. block diagram supply voltage v s 6.5 - 40 v drain source voltage v ds(az)max 60 v on resistance r on (typ) 0.21 w output current i d 2 x 4 a nom. output current i d(iso) 2 x 1.3 a p-dso-24-3 v s l o g i c l o g i c g n d s t 2 i n 2 s t 1 i n 1 e n a o p e n l o a d o v e r l o a d o p e n l o a d o v e r l o a d r p d r p d t h e r m a l o v e r l o a d t l e 5 2 2 4 g 2 v b b v b b l o a d 1 l o a d 2 o u t 2 o u t 1 tle 6215 g
target datasheet tle 6215 g v3 page 19.06.2001 2 block diagram of open load detection
target datasheet tle 6215 g v3 page 19.06.2001 3 maximum ratings for t j = ? 40c to 150c parameter symbol values unit supply voltage v s - 0.3 ... + 40 v supply voltage operational range v s + 4.8 ... + 40 v continuous drain source voltage (out1, out2) v ds 45 v input voltage in1, in2, ena v in - 0.3 ... + 6 v status output voltage v st - 0.3 ... + 32 v operating temperature range storage temperature range t j t stg - 40 ... + 150 - 55 ... + 150 c output current per channel i d(lim) self limited a status output current i st - 5 ... + 5 ma inductive load single switch off dissipation energy t j = 25c e as 50 mj thermal resistance junction - case 1 junction - ambient r thjc r thja 12 75 k/w pin definitions and functions pin configuration(top view) pin symbol function 1 in1 control input channel 1 2 st2 status output channel 2 3 out2 power output channel 2 4 n.c. not connected, cooling 5,6,7,8 gnd ground, cooling 9,10 n.c. not connected, cooling 11 ena enable input for both channels 12 v s supply voltage 13,14,15,16 n.c. not connected, cooling 17,18,19,20 gnd ground, cooling 21 n.c. not connected, cooling 22 out1 power output channel 1 23 st1 status output channel 1 24 in2 control input channel 2 1 case = pin 5 to 8 and 17 to 20. additionally the pins not connected (n.c.) have to be connected to the ground plane used as thermal heatsink to achieve the best thermal resistance.
target datasheet tle 6215 g v3 page 19.06.2001 4 electrical characteristics parameter and conditions symbol values unit v s = 6.5 to 40 v ; t j = - 40 c to + 150 c (unless otherwise specified) min typ max 1. power supply (v s ) supply current (outputs on) v s = 40 v v s 18 v i s 2,5 5 4 ma supply current (output off) v s 18 v i s 1,5 3 ma operating voltage v s 4.8 40 v 2. power outputs on state resistance; t j = 25 c i d = 4a; v s 3 9.5 v t j = 150c r ds(on) 0.21 0.42 w z-diode clamping voltage (out1, out2) v ds(az) 45 60 v pull down resistor t j = 25 c t j 125 c r pd 14 10 20 26 40 k w output on delay time 2 i d = 0.2 a output off delay time 2 i d = 2 a output on fall time 2 i d = 0.2 a output off rise time 2 i d = 2 a output off status delay time 2 i d = 2 a output on status delay time 2 3 4 overload switch-off delay time 3 t on t off t fall t rise t 4 t 5 t dso 10 20 50 25 50 20 25 40 40 60 50 150 s 3. digital inputs (in1, in2, ena) input low voltage v inl - 0.3 1.0 v input high voltage v inh 2.0 6.0 v input voltage hysteresis v inhys 0.2 0.6 v input pull down current v in =5 v; v s 3 9 v i in 50 100 140 a enable pull down current v ena =5 v; v s 3 9 v i ena 15 30 45 a 4. digital status outputs (st1, st2), open drain output voltage low i st = 2 ma v stl 0.5 v leakage current high i sth 10 a 2 see timing diagram, resitive load condition; v s 3 9 v 3 this parameter will not be tested but assured by design 4 time till status valid after switching on or error d e tection
target datasheet tle 6215 g v3 page 19.06.2001 5 electrical characteristics parameter and conditions symbol values unit v s = 6.5 to 40 v ; t j = - 40 c to + 150 c (unless otherwise specified) min typ max 5. diagnostic functions open load detection voltage v s 18 v (output off) v s = 12 v v ds(ol) 0.515 *v s 6.2 0.585 *v s 7.0 v open load compare voltage 5 18v > v dsc > 0.65*v s v ds(ol)c v dsc - 1.6 v dsc - 0.9 v open load detection current (output on) i d(ol) 100 500 ma overload threshold current v s 3 9.5 v i d(lim) 5 a overtemperature shutoff threshold 6 hysteresis t th t hys 170 10 200 c k application description this ic is specially designed to drive inductive loads (relays, electromagnetic valves). integrated clamp-diodes limit the output voltage peak when switching off an i n ductive load. for the detection of errors there are two status outputs, which monitor the following errors by logic levels: - thermal overload, - open and short load to ground in active an inactive mode, - overloading of output (also shorted load to supply) in active mode. circuit description input circuits the control and enable inputs, all active high, consist of schmitt triggers with hysteresis. all inputs are connected with pull-down current sources. not connected inputs are interpreted as "low?. switching stages the power outputs consist of a dmos power transistor with open drain. the output stages are short- load-protected throughout the operating range. integrated clamp-diodes limit voltage spikes produced when inductive loads are discharged. protective circuit the outputs are protected against current overload. there is no protection against reverse polarity of the supply voltage. 5 v dsc is the output voltage of the other channel used for open load compare detection 6 this parameter will not be tested but assured by design
target datasheet tle 6215 g v3 page 19.06.2001 6 error detection the status output signal of the switching stages at normal operation is low = off; high = on. in case of any error the status outputs are set according to the table below. if current overload or thermal overload occurs, the error condition is stored in an internal register and the output is shutdown. to reset this register the control input of the affected channel has to be switched off and then on again. the state of the error detection circuit is directly dependent on the input status. open load is detected for both on- and off-modus. in the on-modus the load current is monitored. if it drops below the specified threshold open load is detected. in the off mode, the ouput voltage is monitored. an open load condition is detected when the output voltage of a given channel is below 55 % of the supply voltage v s . also the output voltages of two outputs are compaired against each other in off condition with a fixed offset of typ. 1.25 v to recognize gnd bypasses. to suppress fault diagnosis during the flyback phase of the compared output, the diagnostic circuit includes a latch function. reset of this latch is done at end of the flyback phase, additionally it can be reseted by a low signal on the enable input and by a high signal of the input signal. see also the block diagramm of open load dete c - tion. diagnostic table operating condition inputs power outputs status outputs ena in1 in2 out1 out2 st1 st2 normal function l h h h h x l h l h x l l h h off off on off on off off off on on l l h l h l l l h h thermal overload x l h l x h l x h off off off off off off l l l l l l open load channel 1 x l h l h h 1) off off on 1) h h l 1) open load channel 2 x l h 1) l h h 1) off off on 1) h h l overload channel 1 l h h x l h 1) off off off 1) l l l 1) overload channel 2 l h h 1) x l h 1) off off off 1) l l l 1) see normal function
target datasheet tle 6215 g v3 page 19.06.2001 7 test circuit application circuit the blocking capacitor c is recommended to avoid critical negative voltage spikes on v s in case of battery interruption during off-commutation.
target datasheet tle 6215 g v3 page 19.06.2001 8 timing diagram v v i nh v t v ds t v s t 9 0 % 1 0 % t fall t on t rise t 4 t t 5 v s inl in t off
target datasheet tle 6215 g v3 page 19.06.2001 9 package and ordering code all dimensions in mm p - dso - 24 - l16 ordering code (dual-in-line package, small-outline) 24 b 24 din 41870 t17 1 . 2 7 1 2 3 6 4 5 7 8 9 1 0 1 1 1 2 2 4 2 3 2 2 1 9 2 1 2 0 1 8 1 7 1 6 1 5 1 4 1 3 0 . 3 6 + 0 . 1 3 0 . 7 6 m a x -0.2 15.4 -0.2 2.45 0.1 min - 0 . 2 7 . 6 1 0 . 3 0 . 3 0 . 2 5 + 0 . 0 7 2 . 6 5 m a x
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