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| Preliminary data sheet TLE 4224-2/S2 Smart Low-Side Switch Features * Power limitation * Thermal shutdown * Overload protection * Short circuit protection * Diagnostic feedback * Overvoltage protection * Reverse polarity protection * C compatible input * Electrostatic discharge (ESD) protection Product Summary Supply voltage Drain source voltage On resistance Output current VS VDS(AZ)max RON(typ) ID 6.5 - 45 65 0.25 4 V V A Application * All kinds of resistive and inductive loads (relays,electromagnetic valves) * C compatible power switch for 12 and 24 V applications * Solenoid control switch in automotive and industrial control systems P - TO220 -7-1 P - TO220 -7-2 General description Single channel Low-Side Switch in Smart Power Technology (SPT) with C compatible input and an open drain DMOS output stage. The TLE 4224-2 is fully protected by embedded protection functions and designed for automotive and industrial applications. Block Diagram VS VC VBB Thermal overload internal supply TLE 4224-2 Load Open Load Overload RPD Semiconductor Group Page 1 20.12.96 Preliminary data sheet TLE 4224-2/S2 Maximum Ratings for Tj = - 40C to 150C Parameter Supply voltage Supply voltage operational range Symbol VS Values - 15 ... + 60 + 5.5 ... + 45 - 0.3 ... 65 45 - 0.3 ... + 6 - 0.3 ... + 32 - 40 ... + 150 - 55 ... + 150 self limited - 5 ... + 5 100 200 3 65 Unit V V V V V V C A mA mJ K/W VS Compare voltage VC Continuous drain source voltage (OUT) VDS Input voltage (IN) VIN Status output voltage (ST) VST Operating temperature range Tj Storage temperature range Tstg Output current ID(lim) Status output current IST Inductive load switch off dissipation energy Tcase = 125 C EAS Tcase = 75 C Thermal resistance junction - case RthJC junction - ambient RthJA Pin Definitions and Functions Pin Symbol 1 2 3 4 5 6 7 ST IN ENA GND VC OUT VS Pin Configuration Function Status Output (open drain) for error monitoring Control Input, active high Enable Input, active high Ground, connected internally to cooling lug Compare voltage for open load detection Power Output (open drain) Supply Voltage Semiconductor Group Page 2 20.12.96 Preliminary data sheet TLE 4224-2/S2 Electrical Characteristics Parameter and Conditions VS = 6.5 to 45 V ; T j = - 40 C to + 150 C (unless otherwise specified) 1. Power Supply (VS) Supply current (Output ON) Supply current (Output OFF) Operation voltage 2. Power Outputs ON state resistance; ID = 4A Z-Diode clamping voltage (OUT) Pull down resistor Output on delay time Output off delay time 1 Output on fall time 1 Output off rise time 1 Output off status delay time 1 Output on status delay time 1 2 3 Overload switch-off delay time 3. Digital Inputs (IN, ENA) Input low voltage Input high voltage Input voltage hysteresis Input pull down current Enable pull down current VS 9 V; VIN = 5 V VS 9 V; VENA = 5 V 1 Symbol Values min Unit typ max VS 18 V IS IS VS 5 1.5 5.5 45 mA mA V Tj = 25 C Tj = 150C Tj = 25 C ID = 0.2 A ID = 2 A ID = 0.2 A ID = 2 A ID = 2 A RDS(ON) VDS(AZ) RPD ton toff tfall trise t4 t5 tDSO 45 14 10 0.25 0.5 65 20 25 50 20 25 40 26 40 V k s 20 50 60 50 150 VINL VINH VINHys IIN IENA - 0.3 2.0 0.2 50 5 100 15 1.0 6.0 0.6 140 22 V V V A A 4. Digital Status Outputs (ST) open Drain Output voltage low Leakage current high IST = 2 mA VSTL ISTH 0.5 10 V A See timing diagram, resitive load condition; VS 9 V Time till status valid after switching on or error detection 3 This parameter will not be tested but assured by design 1 2 Semiconductor Group Page 3 20.12.96 Preliminary data sheet TLE 4224-2/S2 Electrical Characteristics Parameter and Conditions VS = 6.5 to 45 V ; T j = - 40 C to + 150 C (unless otherwise specified) 5. Diagnostic Functions Open load detection voltage VC = 0 V; 8 VS 18 V (Output OFF) 6.5 VS 45 V Open load compare detection Overload threshold current VS 9.5 V Overtemperature shutdown threshold Hysteresis VC-Input current 4 Symbol Values min Unit typ max VDS(OL) VDS(OL)C ID(OL) ID(lim) Tth Thys IVC 0.5*VS 0.45*VS 0.6*VS 0.65*VS V V mA A A 6.5 VC 18 V Tj = 25C Tj = 150C VC -1.6 100 5.25 4 155 10 VC -0.9 500 Open load detection current (Output ON) 185 0.25 C K mA VC 18 V Application Description This IC is specially designed to drive inductive loads (relays, electromagnetic valves). An integrated clamp-diode limits the output voltage when inductive loads are discharged. For the detection of errors there is a open-drain status output, which monitors the following errors by logic level: - overloading of output (also shorted load to supply) in active mode - open and shorted load to ground in active and inactive mode - thermal overload. 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 output consists of a DMOS-power transistor with open drain. The output stage is shorted load protected troughout the operating range. The integrated clamp-diode limit voltage spikes produced when inductive loads are discharged. 4 This parameter will not be tested but assured by design Page 4 20.12.96 Semiconductor Group Preliminary data sheet TLE 4224-2/S2 Protective Circuits An integrated diode protects the device against reverse polarity of the operating voltage. The load circuit withstands reverse poling within the limits of the maximum ratings (no shorted load permissible at the same time). The outputs are protected against current overload and thermal overload. Error Detection The status output signals the switching state at normal operating conditions (LOW = off; HIGH = on) and in case of errors. The outputs are set according to the diagnostic table below. If current overload occurs, the error condition is stored into an internal register and the output is shutdown. To reset the register, the control input of the corresponding channel has to be switched off and then on again. Open load is detected in on- and off-modus: In on-modus the load current is monitored , in the offmodus the ouput voltage is monitored. The open load voltage threshold is programmable via the voltage supplied to the VC. The state of the error detection circuit is directly dependent on the input status. Diagnostic Table Operating Condition Enable Input ENA Normal Operation L L H H Thermal Overload Open Load or shorted load to ground X X L L H H Overload or shorted load to supply L L H H L = LOW H = HIGH X = RANDOM Control Input IN L H L H L H L H L H L H L H Power Output Status Output OUT OFF OFF OFF ON OFF OFF OFF OFF OFF ON OFF OFF OFF OFF ST L L L H H L H H H L L L L L Semiconductor Group Page 5 20.12.96 Preliminary data sheet TLE 4224-2/S2 Test Circuit VD=5V VC VS 470nF 1000u 10k IST 5 IVC 7 Is VC VS 1 ST RL I IN V ST V IN 2 I ENA VENA 3 IN TLE 4224-2 ID OUT 6 ENA GND 4 VDS Application Circuit VC C 10k 7 Status Output Control Input Enable Input 1 VC L VS 6 OUT ST 2 IN TLE 4224-2 GND 4 12 V 3 ENA The blocking capacitor C is recommended to avoid critical negative voltage spikes on V S in case of battery interruption during OFF-commutating. Semiconductor Group Page 6 20.12.96 Preliminary data sheet TLE 4224-2/S2 Timing Diagram VIN VI NH V INL t VDS VS 90% ton toff 10% t t fall t rise VST t5 t4 t Overload Current versus temperature 7 6,5 6 ID(lim) [ A ] 5,5 5 4,5 4 3,5 3 -50 -25 0 25 50 75 100 125 150 Junction Temperature [ C ] Semiconductor Group Page 7 20.12.96 Preliminary data sheet TLE 4224-2/S2 Package and ordering code all dimensions in mm P - TO220 - 7-1 Ordering code Q67000-A9062 4.6-0.2 10+0.4 1.27 +0.1 3.75+0.1 2.8 19 max 1 7 2.6 8.8-0.2 15.4+/-0.3 8.6+/-0.3 0.6+0.1 0.4+0.1 1.27 6x1.27=7.62 8.4+/-0.3 3.9+/-0.3 10.2-0.2 P - TO220 - 7-2 Ordering code Q67000-A9279 Semiconductor Group 10.2+/-0.3 Page 8 20.12.96 |
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