AUIPS7111STRR

November, 29th 2009 Automotive grade AUIPS7111S CURRENT SENSE HIGH SIDE SWITCH Features           Suitable for 24V systems Over current shutdown Over temperature shutdown Current sensing Active clamp Low current Reverse battery ESD protection Optimized Turn On/Off for EMI 24V loads for trucks Product Summary Rds(on) 7.5 m max. Vclamp 65V Current shutdown 30A min. Applications Description The AUIPS7111S is a fully protected four terminal high side switch. It features current sensing, over-current, overtemperature, ESD protection and drain to source active clamp. When the input voltage Vcc - Vin is higher than the specified threshold, the output power Mosfet is turned on. When the Vcc - Vin is lower than the specified Vil threshold, the output Mosfet is turned off. The Ifb pin is used for current sensing. Package D²Pak-5 leads Typical Connection Vcc IN Ifb Current feeback Input On Off IPS Battery Out 10k Rifb Logic Ground Power Ground Load www.irf.com 1 AUIPS7111S Qualification Information† Qualification Level 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. D2PAK-5L MSL1, 260°C (per IPC/JEDEC J-STD-020) Moisture Sensitivity Level Class M3 (300V) (per AEC-Q100-003) Class H2 (2,500 V) ESD Human Body Model (per AEC-Q100-002) Class C4 (1000 V) Charged Device Model (per AEC-Q100-011) Class II, Level A IC Latch-Up Test (per AEC-Q100-004) RoHS Compliant 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. Machine Model www.irf.com 2 AUIPS7111S Absolute Maximum Ratings Absolute maximum ratings indicate sustained limits beyond which damage to the device may occur. (Tj= -40°C..150°C, Vcc=8..50V unless otherwise specified). Symbol Parameter Min. Max. Units V V mA W °C Vout Maximum output voltage Vcc-Vin max. Maximum Vcc voltage Ifb, max. Maximum feedback current Maximum power dissipation (internally limited by thermal protection) Pd Tambient=25°C, Tj=150°C Rth=50°C/W D²Pack 6cm² footprint Tj max. Max. storage & operating junction temperature Vcc-60 Vcc+0.3 -32 60 -50 10  -40 2.5 150 Thermal Characteristics Symbol Rth1 Rth2 Rth3 Parameter Thermal resistance junction to ambient D²Pak Std footprint Thermal resistance junction to ambient D²pak 6cm² footprint Thermal resistance junction to case D²pak Typ. 60 40 0.8 Max.    Units °C/W Recommended Operating Conditions These values are given for a quick design. Symbol Iout Rifb Parameter Continuous output current, Tambient=85°C, Tj=125°C Rth=40°C/W, D²pak 6cm² footprint Min.  Max. 10  Units A k 1.5 www.irf.com 3 AUIPS7111S Static Electrical Characteristics Tj=-40..150°C, Vcc=8..50V (unless otherwise specified) Symbol Vcc op. Rds(on) Parameter Min. Typ. Max. Units Test Conditions Ids=10A Vin=Vcc=28V,Vifb=Vgnd Vout=Vgnd, Tj=25°C Id=10mA Id=10A see fig. 2 Id=10mA Isd=10A, Vcc-Vin=7..32V If=10A Tj=-40°C..125°C  Operating voltage range 8 50 V  ON state resistance Tj=25°C 6 7.5 m  ON state resistance Tj=150°C 12 15  Icc off Supply leakage current 2 6 µA  Iout off Output leakage current 2 6  V clamp1 Vcc to Vout clamp voltage 1 60 65   V clamp2 Vcc to Vout clamp voltage 2 66 V  Vih(2) High level Input threshold voltage 5.5 6.8  Vil(2) Low level Input threshold voltage 3.5 5  Rds(on) rev Reverse On state resistance Tj=25°C 7 10 m  Reverse On state resistance Tj=150°C 13 18  Vf Forward body diode voltage Tj=25°C 0.75 0.8 V  Forward body diode voltage Tj=125°C 0.6 0.65 Rin Internal input resistor 180 250 350  (2) Input thresholds are measured directly between the input pin and the tab. See also page 6 Switching Electrical Characteristics Vcc=28V, Resistive load=3, Tj=25°C Symbol tdon tr tdoff tf Parameter 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. 25 8 50 5 Typ. 35 17 80 13 Max. 50 25 120 35 Units µs Test Conditions See fig. 1 µs Protection Characteristics Tj=-40..150°C, Vcc=8..50V (unless otherwise specified) Symbol Tsd Isd I fault Parameter Over temperature threshold Over-current shutdown Ifb after an over-current or an overtemperature (latched) Min. 150(3) 30 2.4 Typ. 165 45 4 Max.  Units °C A mA Test Conditions See fig. 3 and fig. 10 See fig. 3 and page 7 See fig. 3 60 6 Current Sensing Characteristics Tj=-40..150°C, Vcc=8..50V (unless otherwise specified) Symbol Parameter Min. Typ. Max. 14500 +5 0.25 15 Units % A µA Test Conditions Iout=10A Iout 45A 250 Tj > 165°C IN IFB OUT 5 www.irf.com AUIPS7111S 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 Ifb leakage x Rifb 0V I fault x Rifb (latched) 0V I fault x Rifb (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 turned on if the input pin is powered with a diode in parallel of the input transistor. Power dissipation in the IPS : P = Rdson rev * I load² + Vcc² / 250 ( internal input resistor ). If the power dissipation I too hight in Rifb, a diode in serial can be added to block the current. 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  39 V : 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 AUIPS7111S Input level VIH/VIL The input level are referenced to Vcc. When Vcc-Vin exceed VIH the part turns on and when Vcc-Vin goes below VIL the part turns off 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 of the Rdson : I offset@-40°C= I offset@25°C / 0.7 I offset@150°C= I offset@25°C / 1.9 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 (see Figure 10). www.irf.com 7 AUIPS7111S T clamp Vcc-Vin 80% Vcc-Vin 20% Ids 80% Vcc Vout 20% Td on Tr Td off Tf Vds Vds clamp See Application Notes to evaluate power dissipation Figure 1 – IN rise time & switching definitions Figure 2 – Active clamp waveforms 30 Vin Ids I shutdown Icc off, supply leakage current (µA) 25 20 15 10 5 0 -50 0 50 100 150 Tj Tsd 165°C V fault Tshutdown Vifb Tj, junction temperature (°C) Figure 3 – Protection timing diagram Figure 4 – Icc off (µA) Vs Tj (°C) www.irf.com 8 AUIPS7111S 5 6 5 4 4 Icc, supply current (µA) 3 Vih and Vil (V) VIH VIL 3 2 1 0 2 1 0 0 10 20 30 40 50 -50 -25 0 25 50 75 100 125 150 Vcc-Vout, supply voltage (V) Figure 5 – Icc Off(µA) Vs Vcc-Vout (V) Tj, junction temperature (°C) Figure 6 – Vih and Vil (V) Vs Tj (°C) 200% 100 Rds(on), Drain-to-Source On Resistance (Normalized) Zth, transient thermal impedance (°C/W) 10 150% 1 100% 0.1 50% -50 0 50 100 150 0.01 1E-4 1E-3 1E-2 1E-1 1E+0 1E+1 1E+2 Tj, junction temperature (°C) Figure 7 - Normalized Rds(on) (%) Vs Tj (°C) Time (s) Figure 8 – Transient thermal impedance (°C/W) Vs time (s) www.irf.com 9 AUIPS7111S 100 100 Tsd, time to shutdown(s) Max. output current (A) 10 10 1 '-40°C '+25°C '+125°C 0.1 1 1.E+00 1.E+01 1.E+02 1.E+03 1.E+04 0 10 20 30 40 Inductance (µH) Figure 9 – Max. Iout (A) Vs inductance (µH) Iout, output current (A) Figure 10 – Tsd (s) Vs I out (A) SMD with 6cm² www.irf.com 10 AUIPS7111S Case Outline D2PAK - 5 Leads www.irf.com 11 AUIPS7111S Tape & Reel D2PAK - 5 Leads www.irf.com 12 AUIPS7111S Part Marking Information Ordering Information Base Part Number Standard Pack Package Type Form Tube AUIPS7111R D2-Pak-5-Leads Tape and reel left Tape and reel right Quantity 50 800 800 AUIPS7111S AUIPS7111STRL AUIPS7111STRR Complete Part Number www.irf.com 13 AUIPS7111S 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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