March, 24th 2011 Automotive grade AUIPS7142G DUAL CHANNELS CURRENT SENSE HIGH SIDE SWITCH Features Product Summary 24V battery system Over current shutdown Over temperature shutdown Current sensing Active clamp Low quiescent current ESD protection Optimized Turn On/Off for EMI Lead free and RoHS compliant Rds(on) 100m max. Vclamp 65V Current shutdown 20A min. Applications Package 21W Filament lamp Solenoid 24V truck loads Description The AUIPS7142G is a fully protected dual high side switch specifically designed for driving lamp. It features current sensing, over-current, over-temperature, ESD protection and drain to source active clamp. The Ifb pin is used for current sensing. The over-current shutdown is higher than inrush current of the lamp. SOIC16L-Wide Body Typical Connection Vcc IPS IN Battery Out Ifb Current feeback Input On Off www.irf.com 10k Load 2.5k Logic Ground Power Ground 1 AUIPS7142G Qualification Information† Automotive (per AEC-Q100††) Comments: This family of ICs has passed an Automotive qualification. IR’s Industrial and Consumer qualification level is granted by extension of the higher Automotive level. Qualification Level Moisture Sensitivity Level Machine Model ESD Human Body Model Charged Device Model IC Latch-Up Test RoHS Compliant † †† SOIC-16L WB MSL2, 260°C (per IPC/JEDEC J-STD-020) Class M4 (+/-450V) (per AEC-Q100-003) Class H2 (+/-4000V) (per AEC-Q100-002) Class C4 (+/-1000V) (per AEC-Q100-011) ClassII, Level A (per AEC-Q100-004) Yes Qualification standards can be found at International Rectifier’s web site http://www.irf.com/ Exceptions to AEC-Q100 requirements are noted in the qualification report. www.irf.com 2 AUIPS7142G Absolute Maximum Ratings Absolute maximum ratings indicate sustained limits beyond which damage to the device may occur. (Tj= -40°C..150°C, Vcc=6..50V unless otherwise specified). Symbol Parameter Vout I rev Maximum output voltage Maximum reverse pulsed current (t=100µs) see page 8 Maximum diode continuous current Tambient=25°C, Rth=40°C/W / per Isd cont. channel Vcc-Vin max. Maximum Vcc voltage Iifb, max. Maximum feedback current Vcc sc. Maximum Vcc voltage with short circuit protection see page 8 Maximum power dissipation (internally limited by thermal protection) Pd Rth=40°C/W Tj max. Max. storage & operating junction temperature Min. Max. Units Vcc-60 Vcc+0.3 30 1.7 -16 -50 60 10 50 V A V mA V W -40 3 150 °C Typ. Max. Units 45 40 °C/W Min. Max. Units 1.5 1.5 Thermal Characteristics Symbol Parameter Rth1 Thermal resistance junction to ambient 6cm² footprint one Mosfet on Rth2 Thermal resistance junction to ambient 6cm² footprint two Mosfet on note : Tj-Tambient=Power dissipated in the 2 channel x Rth Recommended Operating Conditions These values are given for a quick design. Symbol Parameter Iout Continuous output current, Tambient=85°C, Tj=125°C Rth=40°C/W, 6cm² footprint Ifb resistor RIfb www.irf.com A k 3 AUIPS7142G Static Electrical Characteristics Tj=-40°C..150°C, Vcc=6-50V (unless otherwise specified) Symbol Parameter Min. Typ. Operating voltage 6 ON state resistance Tj=25°C 75 ON state resistance Tj=150°C(2) 135 Icc off Supply leakage current 1 Iout off Output leakage current 1 I in on Input current while on 0.6 2 V clamp1 Vcc to Vout clamp voltage 1 60 64 V clamp2 Vcc to Vout clamp voltage 2 60 65 Vih(1) High level Input threshold voltage 3 Vil(1) Low level Input threshold voltage 1.5 2.3 Vf Forward body diode voltage Tj=25°C 0.8 Forward body diode voltage Tj=125°C 0.65 (1) Input thresholds are measured directly between the input pin and Vcc. Vcc op. Rds(on) Max. Units 60 100 180 3 3 4 V m µA mA 72 5 V Test Conditions Ids=2A Vin=Vcc / Vifb=Vgnd Vout=Vgnd, Tj=25°C Vcc-Vin=28V, Tj=25°C Id=10mA Id=6A see fig. 2 Id=10mA If=1A 0.9 0.75 Switching Electrical Characteristics Vcc=28V, Resistive load=27, Tj=-40°C..150°C Symbol Parameter Tdon Tr Tdoff Tf Turn on delay time to 20% Rise time from 20% to 80% of Vcc Turn off delay time Fall time from 80% to 20% of Vcc Min. Typ. Max. 4 2 20 2.5 10 5 40 5 20 10 80 10 Units Min. Typ. Max. Units 150(2) 20 2.2 165 25 3 °C A Test Conditions µs See fig. 1 µs Protection Characteristics Tj=-40°C..150°C, Vcc=6-50V (unless otherwise specified) Symbol Parameter Tsd Isd I fault Over temperature threshold Over-current shutdown Ifb after an over-current or an overtemperature (latched) 37 5 mA Test Conditions See fig. 3 and fig.11 See fig. 3 and page 7 See fig. 3 Current Sensing Characteristics Tj=-40°C..150°C, Vcc=6-50V (unless otherwise specified). Specified 500µs after the turn on. Vcc-Vifb>4V Symbol Parameter Ratio I load / Ifb current ratio Ratio_TC I load / Ifb variation over temperature(2) I offset Load current offset Ifb leakage Ifb leakage current On in open load (2) Guaranteed by design www.irf.com Min. Typ. Max. Units 2000 -5% -0.02 0 2400 0 0 1 2800 +5 0.02 10 % A µA Test Conditions Iload<4A Tj=-40°C to +150°C Iout<4A Iout=0A, Vcc-Vin=28V 4 AUIPS7142G Lead Assignments 16 9 1 8 1-2- Vcc 3- In1 4- Ifb1 5- In2 6- Ifb2 7-8-9-Vcc 10-11-12- Out2 13-14-15- Out1 16- Vcc SO16W Functional Block Diagram All values are typical VCC Charge Pump 3V 75V 2mA 60V 75V + - Driver Reset Set 100 Iout > 25A Latch 75V Q Diag + Tj > 165°C IN www.irf.com IFB OUT 5 AUIPS7142G Truth Table Op. Conditions Normal mode Normal mode Open load Open load Short circuit to GND Short circuit to GND Over temperature Over temperature Input H L H L H L H L Output L H L H L L L L Ifb pin voltage 0V I load x Rfb / Ratio 0V 0V 0V V fault (latched) 0V V fault (latched) Operating voltage Maximum Vcc voltage : this is the maximum voltage before the breakdown of the IC process. Operating voltage : This is the Vcc range in which the functionality of the part is guaranteed. The AEC-Q100 qualification is run at the maximum operating voltage specified in the datasheet. Reverse battery During the reverse battery the Mosfet is kept off and the load current is flowing into the body diode of the power Mosfet. Power dissipation in the IPS : P = I load * Vf There is no protection, so Tj must be lower than 150°C in the worst case condition of current and ambient temperature. If the power dissipation is too high in Rifb, a diode in serial can be added to block the current. The transistor used to pull-down the input should be a bipolar in order to block the reverse current. The 100ohm input resistor can not sustain continuously 16V (see Vcc-Vin max. in the Absolute Maximum Ratings section) Active clamp The purpose of the active clamp is to limit the voltage across the MOSFET to a value below the body diode break down voltage to reduce the amount of stress on the device during switching. The temperature increase during active clamp can be estimated as follows: Tj PCL Z TH ( t CLAMP ) Where: Z TH ( t CLAMP ) is the thermal impedance at tCLAMP and can be read from the thermal impedance curves given in the data sheets. PCL VCL ICLavg : Power dissipation during active clamp VCL 65V : Typical VCLAMP value. I ICLavg CL : Average current during active clamp 2 ICL : Active clamp duration t CL di dt di VBattery VCL : Demagnetization current dt L Figure 9 gives the maximum inductance versus the load current in the worst case : the part switch off after an over temperature detection. If the load inductance exceed the curve, a free wheeling diode is required. www.irf.com 6 AUIPS7142G Over-current protection The threshold of the over-current protection is set in order to guaranteed that the device is able to turn on a load with an inrush current lower than the minimum of Isd. Nevertheless for high current and high temperature the device may switch off for a lower current due to the over-temperature protection. This behavior is shown in Figure 11. Current sensing accuracy Ifb Ifb2 Ifb1 Ifb leakage I offset Iout1 Iout2 Iout The current sensing is specified by measuring 3 points : - Ifb1 for Iout1 - Ifb2 for Iout2 - Ifb leakage for Iout=0 The parameters in the datasheet are computed with the following formula : Ratio = ( Iout2 – Iout1 )/( Ifb2 – Ifb1) I offset = Ifb1 x Ratio – Iout1 This allows the designer to evaluate the Ifb for any Iout value using : Ifb = ( Iout + I offset ) / Ratio if Ifb > Ifb leakage For some applications, a calibration is required. In that case, the accuracy of the system will depends on the variation of the I offset and the ratio over the temperature range. The ratio variation is given by Ratio_TC specified in page 4. The Ioffset variation depends directly on the Rdson : I offset@-40°C= I offset@25°C / 0.8 I offset@150°C= I offset@25°C / 1.9 www.irf.com 7 AUIPS7142G Maximum Vcc voltage with short circuit protection The maximum Vcc voltage with short circuit is the maximum voltage for which the part is able to protect itself under test conditions representative of the application. 2 kind of short circuits are considered : terminal and load short circuit. L supply 5µH R supply 10mohm Vcc IPS Out Terminal SC Load SC L SC 0.1 µH 10 µH R SC 10 mohm 100 mohm L SC R SC Maximum current during reverse circulation In case of short circuit to battery, a voltage drop of the Vcc may create a current which circulate in reverse mode. When the device is on, this reverse circulation current will not trigger the internal fault latch. This immunization is also true when the part turns on while a reverse current flows into the device. The maximum current (I rev) is specified in the maximum rating section. www.irf.com 8 AUIPS7142G T clamp Vcc-Vin 80% Vcc-Vin 20% Ids 80% Vcc Vout 20% Td on Td off Vds Vds clamp Tf Tr See Application Notes to evaluate power dissipation Figure 2 – Active clamp waveforms Figure 1 – IN rise time & switching definitions Vin I shutdown Ids Tj Tshutdown Tsd 165°C V fault Vifb Icc off, supply leakage current (µA) 10 8 6 4 2 0 -50 0 50 100 150 Tj, junction temperature (°C) Figure 3 – Protection timing diagram www.irf.com Figure 4 – Icc off (µA) Vs Tj (°C) 9 20 4 15 3 Vih and Vil (V) Icc, supply current (µA) AUIPS7142G 10 2 VIH 1 5 VIL 0 0 0 10 20 30 40 -50 50 -25 0 Figure 5 – Icc off (µA) Vs Vcc-Vout (V) 50 75 100 125 150 Figure 6 – Vih and Vil (V) Vs Tj (°C) 200% 100.00 150% 100% 50% -50 0 50 100 Tj, junction temperature (°C) Figure 7 - Normalized Rds(on) (%) Vs Tj (°C) www.irf.com 150 Zth, transient thermal impedance (°C/W) Rds(on), Drain-to-Source On Resistance (Normalized) 25 Tj, junction temperature (°C) Vcc-Vout, supply voltage (V) 10.00 1.00 Zth 1channel 0.10 Zth 2 channels 0.01 1.E-05 1.E-04 1.E-03 1.E-02 1.E-01 1.E+00 1.E+01 1.E+02 Time (s) Figure 8 – Transient thermal impedance (°C/W) Vs time (s) 10 AUIPS7142G 6.0 Ifb, current feedback current (mA) Max. output current (A) 100 10 1 1.E+01 -40°C 5.0 25°C 4.0 3.0 150°C 2.0 1.0 0.0 1.E+02 1.E+03 1.E+04 1.E+05 Inductance (µH) 0 2 4 6 8 10 12 14 Iout, output current (A) Figure 9 – Max. Iout (A) Vs inductance (µH) Figure 10 – Ifb (mA) Vs Iout (A) 100 Tsd, time to shutdown(s) 10 1 0.1 0.01 '-40°C/2ch '25°C/2ch 0.001 '125°C/2ch 0.0001 0 5 10 15 20 Iout, output current per channel(A) Figure 11 – Tsd (s) Vs I out (A) 2 channels on www.irf.com 11 AUIPS7142G Case Outline SOIC16W www.irf.com 12 AUIPS7142G Tape and Reel – SOIC16W www.irf.com 13 AUIPS7142G www.irf.com 14 AUIPS7142G Part Marking Information Ordering Information Base Part Number Standard Pack Package Type Complete Part Number Form AUIPS7142G SO28W Tube Tape and reel www.irf.com Quantity 45 AUIPS7142G 1500 AUIPS7142GTR 15 AUIPS7142G IMPORTANT NOTICE Unless specifically designated for the automotive market, International Rectifier Corporation and its subsidiaries (IR) reserve the right to make corrections, modifications, enhancements, improvements, and other changes to its products and services at any time and to discontinue any product or services without notice. Part numbers designated with the “AU” prefix follow automotive industry and / or customer specific requirements with regards to product discontinuance and process change notification. All products are sold subject to IR’s terms and conditions of sale supplied at the time of order acknowledgment. IR warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with IR’s standard warranty. Testing and other quality control techniques are used to the extent IR deems necessary to support this warranty. Except where mandated by government requirements, testing of all parameters of each product is not necessarily performed. IR assumes no liability for applications assistance or customer product design. Customers are responsible for their products and applications using IR components. To minimize the risks with customer products and applications, customers should provide adequate design and operating safeguards. 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IR products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or in other applications intended to support or sustain life, or in any other application in which the failure of the IR product could create a situation where personal injury or death may occur. Should Buyer purchase or use IR products for any such unintended or unauthorized application, Buyer shall indemnify and hold International Rectifier and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that IR was negligent regarding the design or manufacture of the product. IR products are neither designed nor intended for use in military/aerospace applications or environments unless the IR products are specifically designated by IR as military-grade or “enhanced plastic.” Only products designated by IR as military-grade meet military specifications. Buyers acknowledge and agree that any such use of IR products which IR has not designated as military-grade is solely at the Buyer’s risk, and that they are solely responsible for compliance with all legal and regulatory requirements in connection with such use. IR products are neither designed nor intended for use in automotive applications or environments unless the specific IR products are designated by IR as compliant with ISO/TS 16949 requirements and bear a part number including the designation “AU”. Buyers acknowledge and agree that, if they use any non-designated products in automotive applications, IR will not be responsible for any failure to meet such requirements. For technical support, please contact IR’s Technical Assistance Center http://www.irf.com/technical-info/ WORLD HEADQUARTERS: 101 N Sepulbeda Blvd., El Segundo, California 90245 Tel: (310) 252-7105 www.irf.com 16 AUIPS7142G Revision History Revision A3 A4 A5 A6 www.irf.com Date Notes/Changes th April, 29 2010 March, 17th 2011 March,18th 2011 March, 24th 2011 Add tri-temp limits Au release Update lead free and RoHS 1st page Add Tape and reel information 17