BTS711L1 Smart Four Channel Highside Power Switch Features * Overload protection * Current limitation * Short-circuit protection * Thermal shutdown * Overvoltage protection (including load dump) * Fast demagnetization of inductive loads * Reverse battery protection1) * Undervoltage and overvoltage shutdown with auto-restart and hysteresis * Open drain diagnostic output * Open load detection in ON-state * CMOS compatible input * Loss of ground and loss of Vbb protection * Electrostatic discharge (ESD) protection Product Summary Overvoltage Protection Operating voltage active channels: On-state resistance RON Nominal load current IL(NOM) Current limitation IL(SCr) 43 V Vbb(AZ) Vbb(on) 5.0 ... 34 V two parallel four parallel one 200 100 50 m 1.9 2.8 4.4 A 4 4 4 A P-DSO-20 Application * C compatible power switch with diagnostic feedback for 12 V and 24 V DC grounded loads * All types of resistive, inductive and capacitive loads * Replaces electromechanical relays and discrete circuits General Description N channel vertical power FET with charge pump, ground referenced CMOS compatible input and diagnostic feedback, monolithically integrated in Smart SIPMOS technology. Providing embedded protective functions. Pin Definitions and Functions Pin 1,10, 11,12, 15,16, 19,20 3 5 7 9 18 17 14 13 4 8 2 6 1) Symbol Function Vbb Positive power supply voltage. Design the wiring for the simultaneous max. short circuit currents from channel 1 to 4 and also for low thermal resistance IN1 Input 1 .. 4, activates channel 1 .. 4 in case of IN2 logic high signal IN3 IN4 OUT1 Output 1 .. 4, protected high-side power output OUT2 of channel 1 .. 4. Design the wiring for the OUT3 max. short circuit current OUT4 ST1/2 Diagnostic feedback 1/2 of channel 1 and channel 2, open drain, low on failure ST3/4 Diagnostic feedback 3/4 of channel 3 and channel 4, open drain, low on failure GND1/2 Ground 1/2 of chip 1 (channel 1 and channel 2) GND3/4 Ground 3/4 of chip 2 (channel 3 and channel 4) Pin configuration (top view) Vbb GND1/2 IN1 ST1/2 IN2 GND3/4 IN3 ST3/4 IN4 Vbb 1 2 3 4 5 6 7 8 9 10 * 20 19 18 17 16 15 14 13 12 11 Vbb Vbb OUT1 OUT2 Vbb Vbb OUT3 OUT4 Vbb Vbb With external current limit (e.g. resistor RGND=150 ) in GND connection, resistor in series with ST connection, reverse load current limited by connected load. Semiconductor Group 1 2003-Oct-01 BTS711L1 Block diagram Four Channels; Open Load detection in on state; Voltage source Overvoltage protection Current limit 1 + V bb Gate 1 protection Channel 1 V Logic 3 IN1 5 IN2 4 ST1/2 Voltage Level shifter sensor Rectifier 1 Logic ESD Signal GND Chip 1 Current limit 2 Level shifter Rectifier 2 GND1/2 OUT1 18 Temperature sensor 1 Open load Short to Vbb detection 1 Charge pump 1 Charge pump 2 2 Limit for unclamped ind. loads 1 Leadframe Gate 2 protection Limit for unclamped ind. loads 2 Open load Short to Vbb detection 2 Chip 1 Channel 2 OUT2 17 Load Temperature sensor 2 R R O1 O2 GND1/2 Load GND + V bb Leadframe Channel 3 OUT3 Logic and protection circuit of chip 2 14 (equivalent to chip 1) 7 IN3 9 IN4 8 ST3/4 Channel 4 OUT4 6 Load GND3/4 PROFET Signal GND Chip 2 13 R Chip 2 R O3 O4 GND3/4 Load GND Leadframe connected to pin 1, 10, 11, 12, 15, 16, 19, 20 Semiconductor Group 2 2003-Oct-01 BTS711L1 Maximum Ratings at Tj = 25C unless otherwise specified Parameter Symbol Supply voltage (overvoltage protection see page 4) Supply voltage for full short circuit protection Tj,start = -40 ...+150C Load current (Short-circuit current, see page 5) Load dump protection2) VLoadDump = UA + Vs, UA = 13.5 V RI3) = 2 , td = 200 ms; IN = low or high, each channel loaded with RL = 7.1 , Operating temperature range Storage temperature range Power dissipation (DC)5 Ta = 25C: (all channels active) Ta = 85C: Inductive load switch-off energy dissipation, single pulse Vbb = 12V, Tj,start = 150C5), IL = 1.9 A, ZL = 66 mH, 0 one channel: two parallel channels: IL = 2.8 A, ZL = 66 mH, 0 IL = 4.4 A, ZL = 66 mH, 0 four parallel channels: Vbb Vbb Values Unit 43 34 V V self-limited 60 A V Tj Tstg Ptot -40 ...+150 -55 ...+150 3.6 1.9 C EAS 150 320 800 mJ VESD 1.0 kV -10 ... +16 2.0 5.0 V mA 16 44 35 K/W IL VLoad 4) dump W see diagrams on page 9 and page 10 Electrostatic discharge capability (ESD) (Human Body Model) Input voltage (DC) Current through input pin (DC) Current through status pin (DC) VIN IIN IST see internal circuit diagram page 8 Thermal resistance junction - soldering point5),6) junction - ambient5) 2) 3) 4) 5) 6) each channel: one channel active: all channels active: Rthjs Rthja Supply voltages higher than Vbb(AZ) require an external current limit for the GND and status pins, e.g. with a 150 resistor in the GND connection and a 15 k resistor in series with the status pin. A resistor for input protection is integrated. RI = internal resistance of the load dump test pulse generator VLoad dump is setup without the DUT connected to the generator per ISO 7637-1 and DIN 40839 Device on 50mm*50mm*1.5mm epoxy PCB FR4 with 6cm2 (one layer, 70m thick) copper area for Vbb connection. PCB is vertical without blown air. See page 15 Soldering point: upper side of solder edge of device pin 15. See page 15 Semiconductor Group 3 2003-Oct-01 BTS711L1 Electrical Characteristics Parameter and Conditions, each of the four channels Symbol at Tj = 25 C, Vbb = 12 V unless otherwise specified Load Switching Capabilities and Characteristics On-state resistance (Vbb to OUT) IL = 1.8 A each channel, Tj = 25C: RON Tj = 150C: two parallel channels, Tj = 25C: four parallel channels, Tj = 25C: Nominal load current one channel active: two parallel channels active: four parallel channels active: Device on PCB5), Ta = 85C, Tj 150C Output current while GND disconnected or pulled up; Vbb = 30 V, VIN = 0, see diagram page 9 Turn-on time to 90% VOUT: Turn-off time to 10% VOUT: RL = 12 , Tj =-40...+150C Slew rate on 10 to 30% VOUT, RL = 12 , Tj =-40...+150C: Slew rate off 70 to 40% VOUT, RL = 12 , Tj =-40...+150C: Operating Parameters Operating voltage7) Undervoltage shutdown Undervoltage restart Tj =-40...+150C: Tj =-40...+150C: Tj =-40...+25C: Tj =+150C: Undervoltage restart of charge pump see diagram page 14 Tj =-40...+150C: Undervoltage hysteresis Vbb(under) = Vbb(u rst) - Vbb(under) Overvoltage shutdown Tj =-40...+150C: Overvoltage restart Tj =-40...+150C: Overvoltage hysteresis Tj =-40...+150C: Overvoltage protection8) Tj =-40...+150C: I bb = 40 mA 7) 8) Values min typ max -- Unit m 165 320 200 400 1.7 2.6 4.1 83 42 1.9 2.8 4.4 100 50 -- A -- -- 10 mA ton toff 80 80 200 200 400 400 s dV/dton 0.1 -- 1 V/s -dV/dtoff 0.1 -- 1 V/s Vbb(on) Vbb(under) Vbb(u rst) 5.0 3.5 -- ---- V V V Vbb(ucp) -- 5.6 34 5.0 5.0 7.0 7.0 Vbb(under) -- 0.2 -- V Vbb(over) Vbb(o rst) Vbb(over) Vbb(AZ) 34 33 -42 --0.5 47 43 ---- V V V V IL(NOM) IL(GNDhigh) V At supply voltage increase up to Vbb = 5.6 V typ without charge pump, VOUT Vbb - 2 V see also VON(CL) in circuit diagram on page 8. Semiconductor Group 4 2003-Oct-01 BTS711L1 Parameter and Conditions, each of the four channels Symbol at Tj = 25 C, Vbb = 12 V unless otherwise specified Values min typ max Unit ---- 28 44 -- 60 70 12 A --- 2 8 3 12 mA each channel, Tj =-40C: IL(SCp) 5.5 9.5 13 4.5 7.5 11 Tj =25C: 2.5 4.5 7 Tj =+150C: two parallel channels twice the current of one channel four parallel channels four times the current of one channel Repetitive short circuit current limit, Tj = Tjt each channel IL(SCr) -4 --4 -two parallel channels -4 -four parallel channels A Standby current, all channels off Tj =25C: Ibb(off) Tj =150C: VIN = 0 Leakage output current (included in Ibb(off)) IL(off) VIN = 0 Operating current 9), VIN = 5V, Tj =-40...+150C IGND = IGND1/2 + IGND3/4, one channel on: IGND four channels on: A Protection Functions10) Initial peak short circuit current limit, (see timing diagrams, page 12) A (see timing diagrams, page 12) Initial short circuit shutdown time Tj,start =-40C: toff(SC) Tj,start = 25C: --- 5.5 4 --- ms -- 47 -- V 150 -- -10 --- C K --- -610 32 -- V mV (see page 11 and timing diagrams on page 12) Output clamp (inductive load switch off)11) at VON(CL) = Vbb - VOUT Thermal overload trip temperature Thermal hysteresis VON(CL) Tjt Tjt Reverse Battery Reverse battery voltage 12) Drain-source diode voltage (Vout > Vbb) IL = - 1.9 A, Tj = +150C -Vbb -VON 9) Add IST, if IST > 0 Integrated protection functions are designed to prevent IC destruction under fault conditions described in the data sheet. Fault conditions are considered as "outside" normal operating range. Protection functions are not designed for continuous repetitive operation. 11) If channels are connected in parallel, output clamp is usually accomplished by the channel with the lowest VON(CL) 12) Requires a 150 resistor in GND connection. The reverse load current through the intrinsic drain-source diode has to be limited by the connected load. Note that the power dissipation is higher compared to normal operating conditions due to the voltage drop across the intrinsic drain-source diode. The temperature protection is not active during reverse current operation! Input and Status currents have to be limited (see max. ratings page 3 and circuit page 8). 10) Semiconductor Group 5 2003-Oct-01 BTS711L1 Parameter and Conditions, each of the four channels Symbol at Tj = 25 C, Vbb = 12 V unless otherwise specified Values min typ max Diagnostic Characteristics Open load detection current, (on-condition) 10 -200 each channel, Tj = -40C: I L (OL) 10 -150 Tj = 25C: 10 -150 Tj = 150C: twice the current of one channel two parallel channels four times the current of one channel four parallel channels 13 ) Open load detection voltage Tj =-40..+150C: VOUT(OL) 2 3 4 Internal output pull down (OUT to GND), VOUT = 5 V Tj =-40..+150C: RO 4 10 30 1 Input and Status Feedback14) Input resistance (see circuit page 8) Unit mA V k RI 2.5 3.5 6 k VIN(T+) 1.7 -- 3.5 V VIN(T-) 1.5 -- -- V -1 0.5 -- -50 V A 20 50 90 A td(ST OL4) 100 320 800 s td(ST OL5) -- 5 20 s td(ST) -- 200 600 s 5.4 --- 6.1 --- -0.4 0.6 V Tj =-40..+150C: Input turn-on threshold voltage Tj =-40..+150C: Input turn-off threshold voltage Tj =-40..+150C: Input threshold hysteresis Off state input current VIN = 0.4 V: Tj =-40..+150C: On state input current VIN = 5 V: Tj =-40..+150C: Delay time for status with open load after switch off (other channel in off state) (see timing diagrams, page 13), Tj =-40..+150C: Delay time for status with open load after switch off (other channel in on state) (see timing diagrams, page 13), Tj =-40..+150C: Status invalid after positive input slope (open load) Tj =-40..+150C: Status output (open drain) Zener limit voltage Tj =-40...+150C, IST = +1.6 mA: ST low voltage Tj =-40...+25C, IST = +1.6 mA: Tj = +150C, IST = +1.6 mA: 13) 14) VIN(T) IIN(off) IIN(on) VST(high) VST(low) External pull up resistor required for open load detection in off state. If ground resistors RGND are used, add the voltage drop across these resistors. Semiconductor Group 6 2003-Oct-01 BTS711L1 Truth Table Channel 1 and 2 Channel 3 and 4 (equivalent to channel 1 and 2) IN1 IN3 Chip 1 Chip 2 Normal operation Open load Channel 1 (3) Channel 2 (4) Short circuit to Vbb Channel 1 (3) Channel 2 (4) Overtemperature both channel Channel 1 (3) Channel 2 (4) Undervoltage/ Overvoltage L = "Low" Level H = "High" Level IN2 IN4 OUT1 OUT3 OUT2 OUT4 L L H H L L H L H L H L H X L L H H Z Z H L H L H L H X L H X L L H L L H L H X L H X H H H Z Z H L H X L H X L X H L H X X X L L H L H X X X L H X L H X L L L L L X X L H H H L L L X X L L L ST1/2 ST3/4 ST1/2 ST3/4 BTS 711L1 BTS 712N1 H H H H H H H H L H H H(L15)) H L H(L15)) H L L H H L16) H H L16) H H(L17)) L16) H H(L17)) H L L H L H L H L16) H H H L L H L H L H X = don't care Z = high impedance, potential depends on external circuit Status signal valid after the time delay shown in the timing diagrams Parallel switching of channel 1 and 2 (also channel 3 and 4) is easily possible by connecting the inputs and outputs in parallel (see truth table). If switching channel 1 to 4 in parallel, the status outputs ST1/2 and ST3/4 have to be configured as a 'Wired OR' function with a single pull-up resistor. Terms V bb Ibb V ON1 V ON2 Leadframe I IN1 I IN2 I ST1/2 V IN1 VIN2 VST1/2 3 5 4 IN1 IN2 Vbb OUT1 PROFET Chip 1 OUT2 ST1/2 GND1/2 2 R I GND1/2 18 I L1 17 I L2 I IN4 I ST3/4 V OUT1 V IN3 VIN4 VST3/4 7 9 8 IN3 IN4 Vbb OUT3 PROFET Chip 2 OUT4 ST3/4 GND3/4 6 VOUT2 R GND1/2 V ON3 V ON4 Leadframe I IN3 I GND3/4 14 I L3 13 I L4 V OUT3 VOUT4 GND3/4 Leadframe (Vbb) is connected to pin 1,10,11,12,15,16,19,20 External RGND optional; two resistors RGND1/2 ,RGND3/4 = 150 or a single resistor RGND = 75 for reverse battery protection up to the max. operating voltage. 15) With additional external pull up resistor An external short of output to Vbb in the off state causes an internal current from output to ground. If RGND is used, an offset voltage at the GND and ST pins will occur and the VST low signal may be errorious. 17) Low resistance to V may be detected by no-load-detection bb 16) Semiconductor Group 7 2003-Oct-01 BTS711L1 Overvoltage protection of logic part Input circuit (ESD protection), IN1...4 R IN GND1/2 or GND3/4 + V bb I ESD-ZD I I V RI IN Z2 IN I Logic GND ST R ST V Z1 ESD zener diodes are not to be used as voltage clamp at DC conditions. Operation in this mode may result in a drift of the zener voltage (increase of up to 1 V). GND R GND Signal GND Status output, ST1/2 or ST3/4 VZ1 = 6.1 V typ., VZ2 = 47 V typ., RI = 3.5 k typ., RGND = 150 +5V R ST(ON) Reverse battery protection ST 5V ESDZD GND R ST IN - Vbb RI Logic ST ESD-Zener diode: 6.1 V typ., max 5.0 mA; RST(ON) < 380 at 1.6 mA, ESD zener diodes are not to be used as voltage clamp at DC conditions. Operation in this mode may result in a drift of the zener voltage (increase of up to 1 V). OUT Power Inverse Diode GND RGND Signal GND Inductive and overvoltage output clamp, OUT1...4 RL Power GND RGND = 150 , RI = 3.5 k typ, Temperature protection is not active during inverse current operation. +Vbb VZ V ON OUT PROFET Power GND VON clamped to VON(CL) = 47 V typ. . Semiconductor Group 8 2003-Oct-01 BTS711L1 Open-load detection, OUT1...4 ON-state diagnostic condition: VON < RON*IL(OL); IN high GND disconnect with GND pull up (channel 1/2 or 3/4) + V bb V Vbb IN2 PROFET ST GND OUT1 IN1 V VON ON IN1 OUT2 IN2 OUT Open load detection Logic unit V V bb V ST GND Any kind of load. If VGND > VIN - VIN(T+) device stays off Due to VGND > 0, no VST = low signal available. OFF-state diagnostic condition: VOUT > 3 V typ.; IN low Vbb disconnect with energized inductive load R EXT OFF IN2 PROFET ST GND OUT1 Open load detection R OUT OUT2 O V Signal GND bb For an inductive load current up to the limit defined by EAS (max. ratings see page 3 and diagram on page 10) each switch is protected against loss of Vbb. GND disconnect Consider at your PCB layout that in the case of Vbb disconnection with energized inductive load the whole load current flows through the GND connection. (channel 1/2 or 3/4) V Vbb high V Logic unit IN1 Ibb bb IN1 Vbb IN2 PROFET OUT1 OUT2 ST V GND V V IN1 IN2 ST V GND Any kind of load. In case of IN = high is VOUT VIN - VIN(T+). Due to VGND > 0, no VST = low signal available. Semiconductor Group 9 2003-Oct-01 BTS711L1 Inductive load switch-off energy dissipation Typ. on-state resistance RON = f (Vbb,Tj ); IL = 1.8 A, IN = high E bb E AS ELoad Vbb IN 450 PROFET = OUT 400 L ST GND ZL { R EL ER L Tj = 150C 300 85C 200 2 EL = 1/2*L*I L -40C 100 EAS= Ebb + EL - ER= VON(CL)*iL(t) dt, 50 with an approximate solution for RL > 0 : ln (1+ |V 25C 150 While demagnetizing load inductance, the energy dissipated in PROFET is IL* L (V + |VOUT(CL)|) 2*RL bb 350 250 Energy stored in load inductance: EAS= RON [mOhm] 500 0 IL*RL OUT(CL)| ) 0 10 20 30 40 Vbb [V] Typ. open load detection current Maximum allowable load inductance for a single switch off (one channel)5) IL(OL) = f (Vbb,Tj ); IN = high L = f (IL ); Tj,start = 150C, Vbb = 12 V, RL = 0 IL(OL) [mA] L [mH] 1000 140 -40C 120 100 80 60 40 10 25C no load detection not specified for V bb < 6 V 100 85C Tj = 150C 20 0 0 1 1 1.5 2 2.5 3 5 10 15 20 25 30 Vbb [V] IL [A] Semiconductor Group 10 2003-Oct-01 BTS711L1 Typ. standby current Ibb(off) = f (Tj ); Vbb = 9...34 V, IN1...4 = low Ibb(off) [A] 60 50 40 30 20 10 0 -50 0 50 100 150 200 Tj [C] Typ. initial short circuit shutdown time toff(SC) = f (Tj,start ); Vbb =12 V toff(SC) [msec] 6 5 4 3 2 1 0 -50 0 50 100 150 200 Tj,start [C] Semiconductor Group 11 2003-Oct-01 BTS711L1 Timing diagrams Timing diagrams are shown for chip 1 (channel 1/2). For chip 2 (channel 3/4) the diagrams are valid too. The channels 1 and 2, respectively 3 and 4, are symmetric and consequently the diagrams are valid for each channel as well as for permuted channels Figure 2b: Switching an inductive load Figure 1a: Vbb turn on: IN1 IN IN2 V bb t d(ST) ST *) V V OUT1 V OUT OUT2 IL I L(OL) ST open drain t t *) if the time constant of load is too large, open-load-status may occur Figure 2a: Switching a lamp: Figure 3a: Turn on into short circuit: shut down by overtemperature, restart by cooling IN IN1 other channel: normal operation ST I L1 V OUT I L(SCp) I I L(SCr) L t ST off(SC) t t The initial peak current should be limited by the lamp and not by the initial short circuit current IL(SCp) = 7.5 A typ. of the device. Semiconductor Group 12 Heating up of the chip may require several milliseconds, depending on external conditions (toff(SC) vs. Tj,start see page 11) 2003-Oct-01 BTS711L1 Figure 5a: Open load: detection in ON-state, open load occurs in on-state Figure 3b: Turn on into short circuit: shut down by overtemperature, restart by cooling (two parallel switched channels 1 and 2) IN1 IN1/2 IN2 I +I L1 channel 2: normal operation L2 I L(SCp) VOUT1 I L(SCr) channel 1: open load I L1 t ST1/2 off(SC) t d(ST OL1) open load normal load t d(ST OL2) t d(ST OL1) t d(ST OL2) ST t t td(ST OL1) = 30 s typ., td(ST OL2) = 20 s typ Figure 4a: Overtemperature: Reset if Tj <Tjt Figure 5b: Open load: detection in ON-state, turn on/off to open load IN IN1 IN2 channel 2: normal operation ST V OUT1 V OUT I L1 channel 1: open load T J t d(ST) t t d(ST OL4) t d(ST) t d(ST OL5) ST t The status delay time td(STOL4) allows to distinguish between the failure modes "open load in ON-state" and "overtemperature". Semiconductor Group 13 2003-Oct-01 BTS711L1 Figure 5c: Open load: detection in ON- and OFF-state (with REXT), turn on/off to open load VON(CL) V on IN1 off-state V OUT1 I L1 bb(u rst) V ST t t d(ST) d(ST) V V channel 1: open load V t d(ST OL5) V bb(over) off-state channel 2: normal operation on-state IN2 Figure 6b: Undervoltage restart of charge pump bb(o rst) bb(u cp) bb(under) V bb t IN = high, normal load conditions. Charge pump starts at Vbb(ucp) = 5.6 V typ. td(ST OL5) depends on external circuitry because of high impedance Figure 6a: Undervoltage: Figure 7a: Overvoltage: IN IN V Vbb bb V bb(under) V ON(CL) Vbb(over) V bb(o rst) Vbb(u cp) Vbb(u rst) V OUT V OUT ST ST open drain t Semiconductor Group t 14 2003-Oct-01 BTS711L1 Package and Ordering Code Standard P-DSO-20-9 BTS711L1 Ordering Code Q67060-S7000-A2 All dimensions in millimetres 1) Does not include plastic or metal protrusions of 0.15 max per side 2) Does not include dambar protrusion of 0.05 max per side Definition of soldering point with temperature Ts: upper side of solder edge of device pin 15. Pin 15 Printed circuit board (FR4, 1.5mm thick, one layer 70m, 6cm2 active heatsink area) as a reference for max. power dissipation Ptot, nominal load current IL(NOM) and thermal resistance Rthja Semiconductor Group 15 2003-Oct-01 BTS711L1 Published by Infineon Technologies AG, St.-Martin-Strasse 53, D-81669 Munchen (c) Infineon Technologies AG 2001 All Rights Reserved. Attention please! The information herein is given to describe certain components and shall not be considered as a guarantee of characteristics. Terms of delivery and rights to technical change reserved. We hereby disclaim any and all warranties, including but not limited to warranties of non-infringement, regarding circuits, descriptions and charts stated herein. Infineon Technologies is an approved CECC manufacturer. Information For further information on technology, delivery terms and conditions and prices please contact your nearest Infineon Technologies Office in Germany or our Infineon Technologies Representatives worldwide (see address list). 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. Semiconductor Group 16 2003-Oct-01