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profet ? bts 443 p data sheet page 1 of 15 rev. 1.0, 2007-02 smart highside power switch reversave ? ? reverse battery protection by self turn on of power mosfet features ? short circuit protection ? current limitation ? overload protection ? thermal shutdown ? overvoltage protection (including load dump) ? loss of ground protection ? loss of v bb protection (with external diode for charged inductive loads) ? very low standby current ? fast demagnetisation of inductive loads ? e lectro s tatic d ischarge ( esd ) protection ? optimized static e lectro m agnetic c ompatibility ( emc ) ? green product (rohs compliant) ? aec qualified diagnostic function ? proportional load current sense (with defi ned fault signal during thermal shutdown) application ? power switch with current sense diagnostic feedback for 12v and 24 v dc grounded loads ? all types of resistive, capacitive and induc tive loads (no pwm with inductive loads) ? replaces electromechanical relays, fuses and discrete circuits general description n channel vertical power fet with charge pump, cu rrent controlled input and diagnostic feedback with load current sense, integrated in smart sipmos ? chip on chip technology. providing embedded protective functions. in charge pump level shifter rectifier limit for unclamped ind. loads gate protection current limit 2 overvoltage protection + v bb profet ? out 3 & tab 1, 5 load gnd load output voltage detection r is is 4 i is i l v is i in lo g ic gnd voltage sensor voltage source current sense logic esd temperature sensor r bb v in product summary operating voltage v bb(on) 5.0 ... 36 v on-state resistance r on 16 m ? load current (iso) i l(iso) 25 a current limitation i l(scr) 65 a package pg-to252-5-11
profet ? bts 443 p data sheet page 2 of 13 rev. 1.0, 2007-02 pin symbol function 1 out o output to the load. the pin 1 and 5 must be shorted with each other especially in high current applications!*) 2 in i input, activates the power switch in case of short to ground tab/(3) v bb + positive power supply voltage, the tab is shorted to this pin. 4 is s diagnostic feedback providing a sense current proportional to the load current; high current on failure (see truth table on page 6) 5 out o output to the load. the pin 1 and 5 must be shorted with each other especially in high current applications!*) *) not shorting all outputs will considerably increase the on-state resistance, reduce the peak current capability and decrease the current sense accuracy maximum ratings at t j = 25 c unless otherwise specified parameter symbol values unit supply voltage (overvoltage protection see page 4) v bb 36 v supply voltage for full short circuit protection (see also diagram on page 9) t j =-40...150 c: v bb 24 1 ) v load dump protection v loaddump = u a + v s , u a = 13.5 v r i = 2 ? , r l = 2.7 ? , t d = 200 ms, in= low or high v load dump 2 ) 60 v load current (short-circuit current, see page 4) i l self-limited a operating temperature range storage temperature range t j t stg -40 ...+150 -55 ...+150 c power dissipation (dc) tc 25c p tot 42 w inductive load switch-off energy dissipation, single pulse u=12v, i=10a, l=3mh t j =150 c: e as 0.15 j electrostatic disc harge capability (esd) (human body model) acc. esd assn. std. s5.1-1993; r=1.5k ? ; c=100pf v esd 4.0 kv current through input pin (dc) current through current sense pin (dc) see internal circuit diagrams page 7 i in i is +15, -100 +15, -100 ma 1 ) short circuit is tested with 100m ? and 20h 2) v load dump is set-up without the dut connected to the generator per iso 7637-1 and din 40839
profet ? bts 443 p data sheet page 3 of 13 rev. 1.0, 2007-02 thermal characteristics parameter and conditions symbol values unit min typ max thermal resistanc e chip - case : r thjc 3 ) -- -- 1.5 k/w junction - ambient (free air): r thja -- 80 -- smd version, device on pcb 4) : -- 45 -- 3) thermal resistance r thch case to heatsink (about 0.5 ... 0.9 k/w with silicone paste) not included! 4 ) device on 50mm*50mm*1.5mm epoxy pcb fr4 with 6cm 2 (one layer, 70 m thick) copper area for v bb connection. pcb is vertical without blown air. electrical characteristics parameter and conditions symbol values unit at t j = -40c...150c, v bb = 12 v unless otherwise specified min typ max load switching capabilities and characteristics on-state resistance (pin 3 to pin 1,5) v in = 0, i l = 5 a t j =25 c: t j =150 c: r on -- 13 25 16 31 m ? output voltage drop limitation at small load currents (tab to pin 1,5) t j =-40...150 c: v on(nl) -- 50 -- mv nominal load current (tab to pin 1,5) iso proposal: t c =85c, v on 0.5v, t j 150c smd 4) : t a =85c, v on 0.5v, t j 150c i l(iso) i l(nom) 21 6.2 25 7.6 -- -- a turn-on time i in to 90% v out : turn-off time i in to 10% v out : r l = 2,5 ? , t j =-40...150 c t on t off 150 70 -- -- 410 410 s slew rate on 10 to 30% v out , r l = 2.5 ?, t j =-40...150 c d v /dt on 0.1 -- 1 v/ s slew rate off 70 to 40% v out , r l = 2.5 ?, t j =-40...150 c -d v /dt off 0.1 -- 1 v/ s
profet ? bts 443 p data sheet page 4 of 15 rev. 1.0, 2007-02 parameter and conditions symbol values unit at t j = -40c...150c, v bb = 12 v unless otherwise specified min typ max operating parameters operating voltage (v in =0v) v bb(on) 5.0 -- 36 v undervoltage shutdown 5 ) v bin(u) 1.5 3.0 4.5 v undervoltage restart of charge pump (v in =0v) v bb(ucp) 3.0 4.5 6.0 v overvoltage protection 6 ) i bb =15 ma v z,in 61 68 -- v standby current t j =-40...+25c : i in =0 t j =150c: i bb(off) -- -- 2 4 5 8 a protection functions 7 ) short circuit current limit (tab to pin 1,5) v on =8v, time until limitation max. 300s t j =-40c: t j =25c: t j =+150c: i l(sc) 35 35 35 75 65 65 110 110 125 a repetitive short circuit current limit, t j = t jt i l(scr) -- 65 -- a output clamp (inductive load switch off) at v out = v bb - v on(cl) (e.g. overvoltage) i l = 40 ma 8 ) v on(cl) 38 42 48 v thermal overload trip temperature t jt 150 -- -- c thermal hysteresis ? t jt -- 10 -- k reverse battery reverse battery voltage -v bb -- -- 20 v on-state resistance (pin 1,5 to pin 3) v bb = - 8v, v in = 0, i l = -5 a, r is = 1 k ? , t j =25 c: v bb = -12v, v in = 0, i l = -5 a, r is = 1 k ? , t j =25 c: t j =150 c: r on(rev) -- -- -- 16 25 22 19 32 m ? integrated resistor in v bb line r bb -- 200 -- ? 5) v bin =v bb -v in see diagram on page 11. 6) see also v on(cl) in circuit diagram on page 7. 7) integrated protection functions are designed to prevent ic destruction under fault condition described in the data sheet. fault conditions are considered as ?outside? normal operating range. protection functions are not for continuous repetitive operation. 8 ) see also page 12.
profet ? bts 443 p data sheet page 5 of 15 rev. 1.0, 2007-02 diagnostic characteristics current sense ratio, static on-condition k ilis = i l : i is v on <1.5 v, v is < v out - 5 v, v bin >4.5 v 9) k ilis -- 8200 -- il = 20a, tj = -40c: tj = +25c: tj = +150c: il = 5a, tj = -40c: tj = +25c: tj = +150c: il = 2.5a, tj = -40c: tj = +25c: tj = +150c: il = 1a, tj = -40c: tj = +25c: tj = +150c: 7400 7500 7500 6800 7200 7200 6800 6800 6800 6800 6800 6800 8300 8300 8200 8300 8300 8200 8500 8500 8100 8600 8600 8600 9100 9100 8800 9700 9300 9000 10000 9800 9200 10500 10500 10500 i in = 0 (e.g. during de-energising of inductive loads) : -- n.a. -- sense current under fault conditions; v ds >1.5v, typ. t j = -40...+150c : i is,fault 2.5 4 -- ma fault-sense signal delay after negative input slope t delay(fault) 0.8 ms current sense leakage current i in = 0: v in = 0, i l = 0: i is(ll) i is(lh) -- -- -- 4 0.5 12 a current sense settling time to i is static 10% after positive input slope, i l = 0 20 a 10 ) t j = -40...+150c : t son(is) -- -- 400 s overvoltage protection i bb = 15 ma t j = -40...+150c: v bis(z) 61 68 -- v 9) if v on is higher, the sense current is no longer proportional to the load current due to sense current saturation. 10 ) not subject to production test, specified by design. input required current capab ility of input switch t j =-40..+150c: i in(on) -- 0.7 1.2 ma maximum input current for turn-off t j =-40..+150c: i in(off) -- -- 50 a
profet ? bts 443 p data sheet page 6 of 15 rev. 1.0, 2007-02 truth table input current level output level current sense i is normal operation l h l h 0 nominal overload l h l h 0 i isfault short circuit to gnd l h l l 0 i isfault overtemperature l h l l 0 i isfault short circuit to v bb l h h h 0 profet ? bts 443 p data sheet page 7 of 15 rev. 1.0, 2007-02 input circuit (esd protection) in zd in i v bb r bb v z,in v bin v in esd-zener diode: 68 v typ., max 15 ma; current sense output normal operation is is r zd is v v bb z,is v r bb i is i is,fault v z,is = 68 v (typ.), r is = 1 k ? nominal (or 1 k ? /n, if n devices are connected in parallel). i s = i l / k ilis can be only driven by the internal circuit as long as v out - v is > 5v. if you want to measure load currents up to i l(m) , r is should be less than ilis m l bb k i v v / 5 ) ( ? . note: for large values of r is the voltage v is can reach almost v bb . see also overvoltage protection. if you don't use the current sense output in your application, you can leave it open. inductive and overvoltage output clamp + v bb out profet v z1 v on v on is clamped to v on(cl) = 42 v typ. overvoltage protection of logic part + v bb v out in bb r signal gnd logic profet v z,is r is in r is v z,in r v v z,vis r bb = 200 ? typ . , v z,in = v z,is = 68 v typ., r is = 1 k ? nominal. note that when overvoltage exceeds 73 v typ. a voltage above 5v can occur between is and gnd, if r v , v z,vis are not used.
profet ? bts 443 p data sheet page 8 of 15 rev. 1.0, 2007-02 reversave ? ( reverse battery protection) logic is in is r v r out l r power signal v bb - power transistor in r bb r d r v 1k ? , r is = 1 k ? nominal. add r in for reverse battery protection in applications with v bb above 16v; recommended value: 1 r in + 1 r is + 1 r v = v v a bb 12 | | , 05 . 0 ? to minimise power dissipation at reverse battery operation, the summarised current into the in and is pin should be about 50ma. the current can be provided by using a small signal diode d in parallel to the input switch, by using a mosfet input switch or by proper adjusting the current through r is and r v. since the current through r bb generates additional heat in the device, this has to be taken into account in the overall thermal considerations. v bb disconnect with energised inductive load provide a current path with load current capability by using a diode, a z-diode, or a varistor. ( v zl < 73 v or v zb < 30 v if r in =0). for higher clamp voltages currents at in and is have to be limited to 250 ma. version a: profet v in out is bb v bb v zl version b: profet v in out is bb v bb v zb note that there is no reverse battery protection when using a diode without additional z-diode v zl , v zb . version c: sometimes a necessary voltage clamp is given by non inductive loads r l connected to the same switch and eliminates the need of clamping circuit: profet v in out is bb v bb r l
profet ? bts 443 p data sheet page 9 of 15 rev. 1.0, 2007-02 inductive load switch-off energy dissipation profet v in out is bb e e e e as bb l r e load l r l { z l r is i in v bb i (t) l energy stored in load inductance: e l = 1 / 2 l i 2 l while demagnetising load inductance, the energy dissipated in profet is e as = e bb + e l - e r = v on(cl) i l (t) dt, with an approximate solution for r l > 0 ? : e as = i l l 2 r l ( v bb + |v out(cl) |) ln (1+ i l r l |v out(cl) | ) the device is not suitable for permanent pwm with inductive loads if active cl amping occurs every cycle. maximum allowable load inductance for a single switch off l = f (i l ); t j,start = 150c, v bb = 12 v, r l = 0 ? l[mh] 0.01 0.1 1 10 100 0 25 50 75 100 i l [a]
profet ? bts 443 p data sheet page 10 of 15 rev. 1.0, 2007-02 timing diagrams figure 1a: switching a resistive load, change of load current in on-condition: i in t v out i l i is t son(is) tt slc(is) load 1 load 2 soff(is) t t t on off slc(is) 90% dv/dton dv/dtoff 10% the sense signal is not valid during a settling time after turn-on/off and after change of load current. figure 1b: typical behaviour of sense output: i l(lim) = 20a i s i l i is,fault >= 2.5ma figure 2a: switching motors and lamps: i in t v out i il i is sense current above i is,fault can occur at very high inrush currents. figure 2b: switching an inductive load: i in t v out i l i is
profet ? bts 443 p data sheet page 11 of 15 rev. 1.0, 2007-02 figure 3a: short circuit: t i i is in l l(scr) i i l(scp) i isfault figure 4a: overtemperature reset if t j < t jt i in t i is v out t j a uto restart i is,fault figure 5a: undervoltage restart of charge pump, overvoltage clamp 0 2 4 6 8 10 12 024681012 v out v bin(ucp) v in = 0 i in = 0 v on(cl) v on(cl) v bin(u) v bin(u) dynamic, short undervoltage not below v bb
profet ? bts 443 p data sheet page 12 of 15 rev. 1.0, 2007-02 figure 6a: current sense versus load current: 0 1.0 2.0 0 5 10 15 20 i l [a] [ma] i is figure 6b: current sense ratio 12 ) : 0 8200 0 2.5 10 20 i l [a] k ilis 5 12 ) this range for the current sense ratio refers to all devices. the accuracy of the k ilis can be raised by means of calibration the value of k ilis for every single device. figure 7a: output voltage drop versus load current: 0.0 0.05 0.1 012345678 i l [a] [v] v on on(nl) v on r
profet ? bts 443 p data sheet page 13 of 15 rev. 1.0, 2007-02 package outlines all dimensions in mm d-pak-5 pin: pg-to252-5-11 sales code bts 443p green product to meet the world-wide customer requirements for environmentally friendly products and to be compliant with government regulations the device is available as a green product. green products are rohs-compliant (i.e pb- free finish on leads and suitable for pb-free so ldering according to ipc/jedec j-std-020).
profet ? bts 443 p data sheet page 14 of 15 rev. 1.0, 2007-02 revision history version date changes rev. 1.0 2007-02-21 rohs-compliant version of bts443p page 1, page 13: rohs compliance statement and green product feature added page 1, page 13: change to rohs compliant package pg-to252-5-11 legal disclaimer updated
edition 2007-02 published by infineon technologies ag 81726 munich, germany ? infineon technologies ag 2007. all rights reserved. legal disclaimer the information given in this document shall in no event be regarded as a guarantee of conditions or characteristics (?beschaffenheitsgarantie?). with respect to any examples or hints given herein, any typical values stated herein and/or any information regarding the application of the device, infineon technologies hereby disclaims any and all warranties and liabilities of any kind, including without limitation warranties of non- infringement of intellectual property rights of any third party. information for further information on technology, delivery terms and conditions and prices please contact your nearest infineon technologies office ( www.infineon.com ). warnings due to technical requirements components may contain dangerous substances. for information on the types in question please contact your nearest infineon technologies office. infineon technologies components may only be used in life-support devices or systems with the express written approval of infineon technologies, if a failure of such components can reasonably be expected to cause the failure of that life-support device or system, or to affect the safety or effectiveness of that device or system. life support devices or systems are intended to be implanted in the human body, or to support and/or maintain and sustain and/or protect human life. if they fail, it is reasonable to assume that the health of the user or other persons may be endangered.

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