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1/13 june 2004 vn31 iso high side smart po wer solid state relay rev. 2 table 1. general features note: 1. in= nominal current according to iso definition for high side automotive switch. the nominal current is the current at t c = 85 c for battery voltage of 13v which produces a voltage drop of 0.5 v. maximum continuous output current (note 2): 31 a @ t c = 85c 5v logic level compatible input thermal shut-down under voltage protection open drain diagnostic output inductive load fast demagnetization very low stand-by power dissipation note: 2. the maximum continuous output current is the current at t c = 85 c for a battery voltage of 13 v which does not activate self protection. description the vn31 is a monolithic device made using stmicroelectronics vipower technology, intended for driving resistive or inductive loads with one side grounded. built-in thermal shut-down protects the chip from over temperature and short circuit. the open drain diagnostic output indicates: open load in off state and in on state, output shorted to v cc and overtemperature. fast demagnetization of inductive loads is achieved by negative (-18v) load voltage at turn-off. figure 1. package table 2. order codes type v dss r ds(on) i n (1) v cc vn31 60 v 0.03 ? 11.5 a 26 v pentawatt (vertical) pentawatt (horizontal) pentawatt (in-line) package tube tape and reel pentawatt vert. vn31 - pentawatt hor. vn31(011y) - pentawatt in line vn31(012y) - obsolete product(s) - obsolete product(s)
vn31 2/13 figure 2. block diagram table 3. absolute maximum ratings symbol parameter value unit v (br)dss drain-source breakdown voltage 60 v i out output current (cont.) at t c = 85 c 31 a i r reverse output current at t c = 85 c ?31 a i in input current 10 ma ? v cc reverse supply voltage ?4 v i stat status current 10 ma v esd electrostatic discharge (1.5 k ? , 100 pf) 2000 v p tot power dissipation at t c = 85 c 54 w t j junction operating temperature -40 to 150 c t stg storage temperature -55 to 150 c obsolete product(s) - obsolete product(s)
3/13 vn31 figure 3. connection diagram figure 4. current and voltage conventions table 4. thermal data symbol parameter value unit r thj-case thermal resistance junction-case max 1.2 c/w r thj-amb thermal resistance junction-ambient max 60 c/w obsolete product(s) - obsolete product(s)
vn31 4/13 electrical characteristics (v cc = 13 v; ?40 t j 125 c unless otherwise specified) table 5. power note: 3. in= nominal current according to iso definition for high side automotive switch the nominal current is the current at t c = 85 c for battery voltage of 13v which produces a voltage drop of 0.5 v. table 6. switching note: 4. see switching time waveforms. table 7. logic input note: 5. the v ih is internally clamped at 6v about. it is possible to connect this pin to an higher voltage via an external resistor calculated to not exceed 10 ma at the input pin. symbol parameter test conditions min. typ. max. unit v cc supply voltage 5.5 13 26 v i n (3) nominal current t c = 85 c; v ds(on) 0.5 11.5 a r on on state resistance i out = 11.5 a i out = 11.5 a; t j = 25 c 0.06 0.03 ? ? i s supply current off state; t j 25 c on state 50 15 a ma v ds(max) maximum voltage drop i out = 25 a; t c = 85 c 1.5 v symbol parameter test conditions min. typ. max. unit t d(on) (4) turn-on delay time of output current i out = 11.5 a; resistive load input rise time < 0.1 s 90 s t r (4) rise time of output current i out = 11.5 a; resistive load input rise time < 0.1 s 100 s t d(off) (4) turn-off delay time of output current i out = 11.5 a; resistive load input rise time < 0.1 s 140 s t f (4) fall time of output current i out = 11.5 a; resistive load input rise time < 0.1 s 50 s (di/dt) on turn-on current slope i out = 11.5 a i out = i ov 0.08 0.5 1 a / s a / s (di/dt) off turn-off current slope i out = 11.5 a i out = i ov 0.2 3 3 a / s a / s v demag inductive load clamp voltage i out = 11.5 a; l = 1 mh ?24 ?18 ?14 v symbol parameter test conditions min. typ. max. unit v il input low level voltage 0.8 v v ih input high level voltage 2 note 5 v v i(hyst) input hysteresis voltage 0.5 v i in input current v in = 5 v v in = 2 v v in = 0.8 v 25 250 500 250 a a a v icl input clamp voltage i in = 10 ma i in = ?10 ma 5.5 6 ?0.7 ?0.3 v v obsolete product(s) - obsolete product(s)
5/13 vn31 electrical characteristics (cont?d) table 8. protection and diagnostics note: 6. i ol(off) = (v cc -v ol )/r ol (see figure 5). 7. t 1(on) : minimum open load duration which activates the status output; t 1(off ): minimum load recovery time which desactivates the status output; t 2(off) : minimum on time after thermal shut down which desactivates status output; t povl t pol : iso definition (see figure 6). figure 5. note 6 relevant figure figure 6. note 7 relevant figure symbol parameter test conditions min. typ. max. unit v stat status voltage output low i stat = 1.6 ma 0.4 v v usd under voltage shut down 5 v v scl status clamp voltage i stat = 10 ma i stat = ?10 ma 6 ?0.7 v v i ov over current r load < 10 m ?; ?40 t c 125 c 140 a i av average current in short circuit r load < 10 m ?; tc = 85 c 2.5 a i ol open load current level 5 600 1250 ma t tsd thermal shut-down temperature 140 c t r reset temperature 125 c v ol (6) open load voltage level off-state 2.5 3.75 5 v t 1(on) (7) open load filtering time 1 5 10 ms t 1(off) (7) open load filtering time 1 5 10 ms t 2(off) (7) open load filtering time 1 5 10 ms t povl (7) status delay 5 10 s t pol (7) status delay 50 700 s obsolete product(s) - obsolete product(s)
vn31 6/13 figure 7. switching time waveforms functional description the device has a diagnostic output which indicates open load conditions in off state as well as in on state, output shorted to v cc and overtemperature. the truth table shows input, diagnostic and output voltage level in normal operation and in fault conditions. the output signals are processed by internal logic. the open load diagnostic output has a 5 ms filtering. the filter gives a continuous signal for the fault condition after an initial delay of about 5 ms. this means that a disconnection during normal operation, with a duration of less than 5 ms does not affect the status output. equally, any re- connection of less than 5 ms during a disconnection duration does not affect the status output. no delay occur for the status to go low in case of overtemperature conditions. from the falling edge of the input signal the status output initially low in fault cond ition (over temperature or open load) will go back with a delay (t povl )in case of overtemperature condition and a delay (t pol ) in case of open load. these feature fully comply with international standard office (i.s.o.) requirement for automotive high side driver. to protect the device against short circuit and over current conditions, the thermal protection turns the integrated power mos off at a minimum junction temperature of 140 c. when the temperature returns to 125 c the switch is automatically turned on again. in short circuit the protection reacts with virtually no delay, the sensor being located in the region of the die where the heat is generated. driving inductive loads, an internal function of the device ensures the fast demagnetization with a typical voltage (v demag ) of -18v. this function allows to greatly reduce the power dissipation according to the formula: p dem = 0.5 l load (i load ) 2 [(v cc +v demag )/ v demag ] f where f = switching frequency and v demag = demagnetization voltage based on this formula it is possible to know the value of inductance and/or current to avoid a thermal shut-down. the maximum inductance which causes the chip temperature to reach the shut down temperature in a specific thermal environment, is infact a function of the load current for a fixed v cc , v demag and f. protecting the device agaist load dump - test pulse 5 the device is able to withstand the test pulse no. 5 at level ii (v s = 46.5v) according to the iso t/r 7637/1 without any external component. this means that all functions of the device are performed as designed after exposure to disturbance at level ii. the vn31 is able to withstand the test pulse no.5 at level iii adding an external resistor of 150 ohm between pin 1 and ground plus a filter capacitor of 1000 f between pin 3 and ground (if r load 20 ? ). protecting the device against reverse battery the simplest way to protect the device against a continuous reverse battery voltage (-26v) is to insert a schottky diode between pin 1(gnd) and ground, as shown in the typical application circuit (figure 10). the consequences of the voltage drop across this diode are as follows: ? if the input is pulled to power gnd, a negative voltage of -v f is seen by the device. (v il , v ih thresholds and v stat are increased by v f with respect to power gnd). ? the undervoltage shutdown level is increased by v f . if there is no need for the control unit to handle external analog signals referred to the power gnd, the best approach is to connect the reference potential of the control unit to node [1] (see application circuit in figure 11), which becomes the common signal gnd for the whole control board avoiding shift of v ih , v il and v stat . this solution allows the use of a standard diode. obsolete product(s) - obsolete product(s)
7/13 vn31 table 9. truth table figure 8. waveforms figure 9. over current test circuit input output diagnostic normal operation l h l h h h open circuit (no load) h h l over-temperature h l l under-voltage x l h short load to v cc lhl obsolete product(s) - obsolete product(s)
vn31 8/13 figure 10. typical application circuit with a schottky diode for reverse supply protection figure 11. typical application circ uit with separate signal ground obsolete product(s) - obsolete product(s)
9/13 vn31 package mechanical table 10. pentawatt (vertical) mechanical data figure 12. pentawatt (vertical) package dimensions note: drawing is not to scale. symbol millimeters min typ max a 4.8 c 1.37 d2.4 2.8 d1 1.2 1.35 e0.35 0.55 f 0.8 1.05 f1 1 1.4 g3.23.43.6 g1 6.6 6.8 7 h2 10.4 h3 10.05 10.4 l2 23.05 23.4 23.8 l3 25.3 25.65 26.1 l5 2.6 3 l6 15.1 15.8 l7 6 6.6 dia. 3.65 3.85 obsolete product(s) - obsolete product(s)
vn31 10/13 table 11. pentawatt (horizontal) mechanical data figure 13. pentawatt (horizontal) package dimensions note: drawing is not to scale. symbol millimeters min typ max a 4.8 c 1.37 d2.4 2.8 d1 1.2 1.35 e0.35 0.55 f 0.8 1.05 f1 1 1.4 g3.23.43.6 g1 6.6 6.8 7 h2 10.4 h3 10.05 10.4 l 14.2 15 l1 5.7 6.2 l2 14.6 15.2 l3 3.5 4.1 l5 2.6 3 l6 15.1 15.8 l7 6 6.6 dia. 3.65 3.85 obsolete product(s) - obsolete product(s)
11/13 vn31 table 12. pentawatt (in-line) mechanical data figure 14. pentawatt (in-line) package dimensions note: drawing is not to scale. symbol millimeters min typ max a 4.8 c 1.37 d2.4 2.8 d1 1.2 1.35 e0.35 0.55 f 0.8 1.05 f1 1 1.4 g3.23.43.6 g1 6.6 6.8 7 h2 10.4 h3 10.05 10.4 l2 23.05 23.4 23.8 l3 25.3 25.65 26.1 l5 2.6 3 l6 15.1 15.8 l7 6 6.6 dia. 3.65 3.85 obsolete product(s) - obsolete product(s)
vn31 12/13 revision history table 13. revision history date revision description of changes september-1994 1 first issue 18-june-2004 2 stylesheet update. no content change. obsolete product(s) - obsolete product(s)
13/13 vn31 information furnished is believed to be accurate and reliable. however, stmicroelectronics assumes no responsibility for the co nsequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of stmicroelectronics. specifications mentioned in this publicati on are subject to change without notice. this publication supersedes and replaces all information previously supplied. stmicroelectronics prod ucts are not authorized for use as critical components in life support devices or systems without express written approval of stmicroelectro nics. the st logo is a registered trademark of stmicroelectronics. all other names are the property of their respective owners ? 2004 stmicroelectronics - all rights reserved stmicroelectronics group of companies australia - belgium - brazil - canada - china - czech republic - finland - france - germany - hong kong - india - israel - ital y - japan - malaysia - malta - morocco - singapore - spain - sweden - switzerland - united kingdom - united states www.st.com obsolete product(s) - obsolete product(s)

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