BTS432F2

PROFET® BTS 432 F2 Smart Highside Power Switch Features • Load dump and reverse battery protection1) • Clamp of negative voltage at output • Short-circuit protection • Current limitation • Thermal shutdown • Diagnostic feedback • Open load detection in ON-state • CMOS compatible input • Electrostatic discharge (ESD) protection • Loss of ground and loss of Vbb protection2) • Overvoltage protection • Undervoltage and overvoltage shutdown with autorestart and hysteresis Product Summary VLoad dump 80 Vbb-VOUT Avalanche Clamp 58 Vbb (operation) 4.5 ... 42 Vbb (reverse) -32 RON 38 IL(SCp) 21 IL(SCr) 10 IL(ISO) 11 V V V V mΩ A A A 5 5 1 Straight leads Application 5 1 1 Standard • µC compatible power switch with diagnostic feedback for 12 V and 24 V DC grounded loads • Most suitable for inductive loads • Replaces electromechanical relays and discrete circuits SMD General Description N channel vertical power FET with charge pump, ground referenced CMOS compatible input and diagnostic feedback, integrated in Smart SIPMOS chip on chip technology. Fully protected by embedded protection functions. R bb + V bb 3 Voltage source Overvoltage protection Current limit Gate protection V Logic Voltage sensor Charge pump Level shifter Rectifier Open load ESD Logic detection Limit for unclamped ind. loads OUT 2 IN Temperature sensor 5 Load 4 ST Short circuit detection GND  PROFET Load GND 1 Signal GND 1) 2) No external components required, reverse load current limited by connected load. Additional external diode required for charged inductive loads Infineon Technologies AG 1 22.03.99 PROFET® BTS 432 F2 Pin 1 2 3 4 5 Symbol GND IN Vbb ST OUT (Load, L) I + S O Function Logic ground Input, activates the power switch in case of logical high signal Positive power supply voltage, the tab is shorted to this pin Diagnostic feedback, low on failure Output to the load Maximum Ratings at Tj = 25 °C unless otherwise specified Parameter Supply voltage (overvoltage protection see page 3) Load dump protection VLoadDump = UA + Vs, UA = 13.5 V RI= 2 Ω, RL= 1.1 Ω, td= 200 ms, IN= low or high Load current (Short-circuit current, see page 4) Operating temperature range Storage temperature range Power dissipation (DC) Inductive load switch-off energy dissipation, single pulse Tj=150 °C: Electrostatic discharge capability (ESD) (Human Body Model) Input voltage (DC) Current through input pin (DC) Current through status pin (DC) see internal circuit diagrams page 6... Symbol Vbb Vs3) Values 63 66.5 self-limited -40 ...+150 -55 ...+150 125 1.7 2.0 -0.5 ... +6 ±5.0 ±5.0 ≤1 ≤ 75 ≤ tbd Unit V V A °C W J kV V mA IL Tj Tstg Ptot EAS VESD VIN IIN IST Thermal resistance chip - case: junction - ambient (free air): SMD version, device on pcb 4): RthJC RthJA K/W 3) 4) VS is setup without 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, 70µm thick) copper area for Vbb connection. PCB is vertical without blown air. Infineon Technologies AG 2 22.03.99 PROFET® BTS 432 F2 Electrical Characteristics Parameter and Conditions at Tj = 25 °C, Vbb = 12 V unless otherwise specified Symbol Values min typ max Unit Load Switching Capabilities and Characteristics On-state resistance (pin 3 to 5) IL = 2 A Nominal load current (pin 3 to 5) ISO Proposal: VON = 0.5 V, TC = 85 °C Output current (pin 5) while GND disconnected or GND pulled up, VIN= 0, see diagram page 7, Tj =-40...+150°C Turn-on time to 90% VOUT: Turn-off time to 10% VOUT: RL = 12 Ω, Tj =-40...+150°C Slew rate on 10 to 30% VOUT, RL = 12 Ω, Tj =-40...+150°C Slew rate off 70 to 40% VOUT, RL = 12 Ω, Tj =-40...+150°C Tj=25 °C: RON Tj=150 °C: IL(ISO) IL(GNDhigh) -9 -- 30 55 11 -- 38 70 -1 mΩ A mA µs ton toff dV /dton -dV/dtoff 50 10 0.4 1 160 ---- 300 80 2.5 5 V/µs V/µs Operating Parameters Operating voltage 5) Tj =-40...+150°C: Undervoltage shutdown Tj =-40...+150°C: Undervoltage restart Tj =-40...+150°C: Undervoltage restart of charge pump see diagram page 12 Tj =-40...+150°C: Undervoltage hysteresis ∆Vbb(under) = Vbb(u rst) - Vbb(under) Overvoltage shutdown Tj =-40...+150°C: Overvoltage restart Tj =-40...+150°C: Overvoltage hysteresis Tj =-40...+150°C: 6) Overvoltage protection Tj =-40°C: Ibb=40 mA Tj =25...+150°C: Standby current (pin 3) Tj=-40...+25°C: VIN=0 Tj=150°C: Leakage output current (included in Ibb(off)) VIN=0 Operating current (Pin 1) 7), VIN=5 V 5) 6) 7) Vbb(on) Vbb(under) Vbb(u rst) Vbb(ucp) ∆Vbb(under) 4.5 2.4 ---42 42 -60 63 ----- ---6.5 0.2 --0.2 -67 12 18 6 1.1 42 4.5 4.5 7.5 -52 ---25 60 --- V V V V V V V V V µA µA mA Vbb(over) Vbb(o rst) ∆Vbb(over) Vbb(AZ) Ibb(off) IL(off) IGND At supply voltage increase up to Vbb= 6.5 V typ without charge pump, VOUT ≈Vbb - 2 V see also VON(CL) in table of protection functions and circuit diagram page 7. Meassured without load. Add IST, if IST > 0, add IIN, if VIN>5.5 V Infineon Technologies AG 3 22.03.99 PROFET® BTS 432 F2 Parameter and Conditions at Tj = 25 °C, Vbb = 12 V unless otherwise specified Symbol Values min typ max Unit Protection Functions Initial peak short circuit current limit (pin 3 to 5) 8), IL(SCp) ( max 400 µs if VON > VON(SC) ) Tj =-40°C: Tj =25°C: Tj =+150°C: Repetitive short circuit current limit IL(SCr) Tj = Tjt (see timing diagrams, page 10) Short circuit shutdown delay after input pos. slope VON > VON(SC), Tj =-40..+150°C: td(SC) min value valid only, if input "low" time exceeds 30 µs --7 6 80 -21 -10 -- 35 ---400 A A µs V V °C K J Output clamp (inductive load switch off) at VOUT = Vbb - VON(CL), IL= 30 mA Short circuit shutdown detection voltage (pin 3 to 5) Thermal overload trip temperature Thermal hysteresis Inductive load switch-off energy dissipation 9), Tj Start = 150 °C, single pulse Vbb = 12 V: Vbb = 24 V: Reverse battery (pin 3 to 1) 10) Integrated resistor in V bb line Diagnostic Characteristics Open load detection current (on-condition) VON(CL) VON(SC) Tjt ∆Tjt EAS ELoad12 ELoad24 -Vbb Rbb --150 --- 58 8.3 -10 -- ----1.7 1.3 1.0 32 -- --- -120 V Ω Tj=-40 °C: IL (OL) Tj=25..150°C: 2 2 --- 900 750 mA 8) 9) Short circuit current limit for max. duration of 400 µs, prior to shutdown (see td(SC) page 4) While demagnetizing load inductance, dissipated energy in PROFET is EAS= ∫ VON(CL) * iL(t) dt, approx. VON(CL) 2 EAS= 1/2 * L * IL * ( ), see diagram page 8 VON(CL) - Vbb 10) Reverse load current (through intrinsic drain-source diode) is normally limited by the connected load. Reverse current IGND of ≈ 0.3 A at Vbb= -32 V through the logic heats up the device. Time allowed under these condition is dependent on the size of the heatsink. Reverse IGND can be reduced by an additional external GND-resistor (150 Ω). Input and Status currents have to be limited (see max. ratings page 2 and circuit page 7). Infineon Technologies AG 4 22.03.99 PROFET® BTS 432 F2 Parameter and Conditions at Tj = 25 °C, Vbb = 12 V unless otherwise specified Symbol Values min typ max Unit Input and Status Feedback11) Input turn-on threshold voltage Tj =-40..+150°C: Input turn-off threshold voltage VIN(T+) VIN(T-) ∆ VIN(T) IIN(off) 1.5 1.0 -1 10 80 350 --0.5 -25 200 -- 2.4 --30 50 400 1600 V V V µA µA µs µs Tj =-40..+150°C: Input threshold hysteresis Off state input current (pin 2) On state input current (pin 2) VIN = 0.4 V: VIN = 3.5 V: IIN(on) td(ST SC) td(ST) Status invalid after positive input slope (short circuit) Tj=-40 ... +150°C: Status invalid after positive input slope (open load) Tj=-40 ... +150°C: Status output (open drain) Zener limit voltage Tj =-40...+150°C, IST = +1.6 mA: ST low voltage Tj =-40...+150°C, IST = +1.6 mA: VST(high) VST(low) 5.4 -- 6.1 -- -0.4 V 11) If a ground resistor RGND is used, add the voltage drop across this resistor. Infineon Technologies AG 5 22.03.99 PROFET® BTS 432 F2 Truth Table Inputlevel Normal operation Open load Short circuit to GND Short circuit to Vbb Overtemperature Undervoltage Overvoltage L = "Low" Level H = "High" Level L H L H L H L H L H L H L H Output level L H 12) Status 432 D2 H H H L H L H H (L13)) L L L14) L14) L L 432 E2/F2 H H H L H L H H (L13)) L L H H H H 432 I2 H H L H H L L H L L L14) L14) L L H L L H H L L L L L L Terms Ibb I IN Status output +5V 3 IN Vbb R ST(ON) IL ST 2 I ST VON PROFET OUT 5 V IN VST 4 ST GND GND 1 R GND ESDZD V bb IGND VOUT ESD-Zener diode: 6.1 V typ., max 5 mA; RST(ON) < 250 Ω at 1.6 mA, ESD zener diodes are not designed for continuous current Input circuit (ESD protection) R Short Circuit detection Fault Condition: VON > 8.3 V typ.; IN high + V bb IN I ESDZDI1 ZDI2 I GND I V ON OUT ZDI1 6.1 V typ., ESD zener diodes are not designed for continuous current Logic unit Short circuit detection 12) 13) 14) Power Transistor off, high impedance Low resistance short Vbb to output may be detected by no-load-detection No current sink capability during undervoltage shutdown Infineon Technologies AG 6 22.03.99 PROFET® BTS 432 F2 Inductive and overvoltage output clamp + V bb V Z V ON GND disconnect 3 2 IN Vbb PROFET OUT 5 OUT GND 4 V bb V IN V ST ST GND 1 V GND VON clamped to 58 V typ. Overvolt. and reverse batt. protection + V bb Any kind of load. In case of Input=high is V OUT ≈ VIN - VIN(T+) . Due to VGND >0, no VST = low signal available. GND disconnect with GND pull up V R IN Z R bb 2 3 IN IN Vbb PROFET OUT Logic V 5 R ST ST GND OUT 4 ST GND 1 PROFET V V R GND Signal GND bb V IN ST V GND Rbb = 120 Ω typ., VZ +Rbb*40 mA = 67 V typ., add RGND, RIN, RST for extended protection Any kind of load. If V GND > VIN - VIN(T+) device stays off Due to VGND >0, no VST = low signal available. Open-load detection ON-state diagnostic condition: VON < RON * IL(OL); IN high + V bb Vbb disconnect with charged inductive load 3 high 2 IN Vbb PROFET OUT 5 4 ST GND 1 ON VON V OUT bb Logic unit Open load detection 3 high 2 IN Vbb PROFET OUT 5 4 ST GND 1 V bb Infineon Technologies AG 7 22.03.99 PROFET® BTS 432 F2 Inductive Load switch-off energy dissipation E bb E AS Vbb PROFET OUT EL GND ER ELoad IN = ST Energy dissipated in PROFET EAS = Ebb + EL - ER. ELoad < EL, EL = 1/2 * L * I L 2 Infineon Technologies AG 8 22.03.99 PROFET® BTS 432 F2 Options Overview all versions: High-side switch, Input protection, ESD protection, load dump and reverse battery protection , protection against loss of ground Type Logic version BTS 432D2 432E2 432F2 432I2 D X X X X X X E F X I X Overtemperature protection Tj >150 °C, latch function 15)16) Tj >150 °C, with auto-restart on cooling Short-circuit to GND protection switches off when VON>8.3 V typ.15) (when first turned on after approx. 200 µs) Open load detection in OFF-state with sensing current 30 µA typ. in ON-state with sensing voltage drop across power transistor X X X X X X -17) X X X X X X X X X X X -17) X X X X X X -17) X X X X X X X X X X Undervoltage shutdown with auto restart Overvoltage shutdown with auto restart Status feedback for overtemperature short circuit to GND short to Vbb open load undervoltage overvoltage Status output type CMOS Open drain Output negative voltage transient limit (fast inductive load switch off) to Vbb - VON(CL) X X X X X X X X Load current limit high level (can handle loads with high inrush currents) medium level low level (better protection of application) 15) Latch except when Vbb -VOUT < VON(SC) after shutdown. In most cases VOUT = 0 V after shutdown (VOUT ≠ 0 V only if forced externally). So the device remains latched unless Vbb < VON(SC) (see page 4). No latch between turn on and td(SC). 16) With latch function. Reseted by a) Input low, b) Undervoltage, c) Overvoltage 17) Low resistance short V to output may be detected by no-load-detection bb Infineon Technologies AG 9 22.03.99 PROFET® BTS 432 F2 Timing diagrams Figure 1a: Vbb turn on: Figure 3a: Turn on into short circuit, IN IN t d(bb IN) V bb ST V V OUT OUT td(SC) A ST open drain t A in case of too early V IN=high the device may not turn on (curve A) td(bb IN) approx. 150 µs td(SC) approx. 200µs if V bb - VOUT > 8.3 V typ. I L t Figure 2a: Switching an inductive load Figure 3b: Turn on into overload, IN IN td(ST) ST *) IL I L(SCp) I L(SCr) V OUT I L ST IL(OL) t t Heating up may require several milliseconds , V bb - VOUT < 8.3 V typ. *) if the time constant of load is too large, open-load-status may occur Infineon Technologies AG 10 22.03.99 PROFET® BTS 432 F2 Figure 3c: Short circuit while on: Figure 5a: Open load: detection in ON-state, turn on/off to open load IN IN ST ST t d(ST) V OUT V OUT IL **) t I L open t **) current peak approx. 20 µs Figure 4a: Overtemperature, Reset if (IN=low) and (Tj