Automotive grade AUIPS6121R CURRENT SENSE HIGH SIDE SWITCH Features Product Summary Suitable for 12V systems Over current shutdown Over temperature shutdown Current sensing Active clamp Low current Reverse battery ESD protection Optimized Turn On/Off for EMI Rds(on) 5.8m max. Vclamp 39V typ. Current shutdown 65A min. Package Applications Glow plug PTC Description The AUIPS6121R is a fully protected four terminal high side switch. It features current sensing, over-current, overtemperature, ESD protection and drain to source active clamp. Shutdown type of protection provides a good reliability under short circuit condition. The Ifb pin provides both an analog feedback during normal operation and a digital flag when the part is in protection mode. DPak – 5Leads Ordering Information Standard Pack Base Part Number Package Type Complete Part Number Form AUIPS6121R D-Pak-5-Leads Tube Tape and reel left 1 www.irf.com © 2015 International Rectifier Quantity 75 AUIPS6121R 3000 AUIPS6121RTRL Submit Datasheet Feedback June 23, 2015 Typical Connection Vcc In AUIPS6121R Battery Ifb Current feedback Out 10k Input * On Load Rifb Logic Ground Off Power Ground * The diode on the bipolaire NPN is necessary for reverse battery protection. 2 www.irf.com © 2015 International Rectifier Submit Datasheet Feedback June 23, 2015 Absolute Maximum Ratings Absolute maximum ratings indicate sustained limits beyond which damage to the device may occur. (Tambient=25°C unless otherwise specified). Symbol Parameter Min. Vout Vcc-Vin max. Iifb, max. Vcc sc Maximum output voltage Maximum Vcc voltage Maximum feedback current Maximum Vcc voltage with short circuit protection see page 7 Maximum power dissipation (internally limited by thermal protection) Rth=50°C/W Dpack 6cm² footprint Max. operating junction temperature Max. storage junction temperature Vcc-39 Vcc+0.3 -18 39 -50 10 22 Pd Tj max. Max. Units V mA V W -40 -55 2.5 150 150 Typ. Max. Units 70 50 1.2 °C/W Min. Max. Units 12 A 50 Hz °C Thermal Characteristics Symbol Parameter Rth1 Rth2 Rth3 Thermal resistance junction to ambient Dpak Std footprint Thermal resistance junction to ambient Dpak 6cm² footprint Thermal resistance junction to case Dpak Recommended Operating Conditions These values are given for a quick design. Symbol Parameter Iout Continuous output current, Tambient=85°C, Tj=150°C Rth=50°C/W, Dpak 6cm² footprint Maximum frequency F 3 www.irf.com © 2015 International Rectifier Submit Datasheet Feedback June 23, 2015 Static Electrical Characteristics Tj=-40°C..150°C, Vcc=6..18V (unless otherwise specified) Symbol Parameter Min. Typ. Max. Operating voltage range 5.8 35 ON state resistance Tj=25°C 4.8 5.8 ON state resistance Tj=150°C (2) 7.5 9 Icc off Supply leakage current 1 3 Iout off Output leakage current 1 3 Iin on Input current when device on 1 2.7 6 V clamp Vcc to Vout clamp voltage 37 39 44 Vih(1) High level Input threshold voltage 4.5 5.4 6.2 Vil(1) Low level Input threshold voltage 4 5 5.8 Rds(on) rev Reverse On state resistance Tj=25°C 6 8 Forward body diode voltage Tj=25°C 0.8 0.9 Vf Forward body diode voltage Tj=125°C 0.6 0.8 Rin Input resistor 115 200 300 (1) Input thresholds are measured directly between the input pin and the tab. (2) Guaranteed by design Vcc op. Rds(on) Units Test Conditions V m µA mA V Ids=10A Vin=Vcc=14V,Vifb=Vgnd Vout=Vgnd, Tj=25°C Vcc-Vin=14V Id=20mA m Isd=10A, Vin-Vcc>8V V If=10A Built-in resistor Switching Electrical Characteristics Vcc=14V, Resistive load=1, Tj=25°C Symbol Parameter Tdon Tr Tdoff Tf Turn on delay time Rise time from 20% to 80% of Vcc Turn off delay time Fall time from 80% to 20% of Vcc Min. Typ. Max. Units 20 15 20 15 50 35 100 35 150 100 250 100 µs Min. Typ. Max. Units 150 65 165 90 120 °C A 15 20 27 mA 18 12 0.3 20 26 0.7 22 60 2 V Test Conditions See fig. 1 Protection Characteristics Tj=-40°C..150°C, Vcc=6..18V (unless otherwise specified) Symbol Parameter Tsd Isd Over temperature threshold(2) Over-current shutdown Ifb after an over-current or an overI fault temperature (latched) OV Over-voltage protection Psd rst Time to reset Psd Psd_UV Time to shutdown when Vcc-Out=UV (3) (3) See explanation page 8 Test Conditions See fig. 3 Vcc-Vin ms Current Sensing Characteristics Tj=-40°C..150°C, Vcc=6..18V (unless otherwise specified), Vcc-Vifb>3.5V Symbol Parameter Min. Typ. Max. Ratio I load / Ifb current ratio 5000 6300 7600 Ratio_Cold Ratio_Hot I offset Ifb leakage Ratio drift between 25°C to -40°C Ratio drift between 25°C to 125°C Load current offset Ifb leakage current -2.2 3 0 0.5 2.1 7.7 0.15 25 4 www.irf.com © 2015 International Rectifier -6.6 -1.6 -0.15 0 Units % A µA Submit Datasheet Feedback Test Conditions Iload=60A at Vcc=14V, Iload=30A at Vcc=6V, after 1.5ms,See page 7 Ratio@-40°/Ratio@25° Ratio@125°/Ratio@25° After 1.5ms Iout=0A, Vcc-Vin=14V June 23, 2015 Lead Assignments 3- Vcc 1- In 2- Ifb 3- Vcc 4- Out 5- Out 12 45 DPak Functional Block Diagram All values are typical VCC Charge Pump Vih=5.4V 75V 2.7mA 36V 75V Vcc-Vin<OV + - Driver Reset Set Latch 40V Q 200 Ω Iout> 90A Reverse Battery Protection Diag + Tj> 165°C Over power shut down IN 5 www.irf.com IFB OUT © 2015 International Rectifier Submit Datasheet Feedback June 23, 2015 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 / 200ohm ( internal input resistor ). If the power dissipation is too high 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 39V : Typical VCLAMP value I ICLavg CL : Average current during active clamp 2 t CL di dt ICL : Active clamp duration di dt VBattery VCL : Demagnetization current L Figure 9 gives the maximum inductance versus the load current in the worst case: the part switches off after an over temperature detection. If the load inductance exceeds the curve, a freewheeling diode is required. Over-current protection The threshold of the over-current protection is set in order to guarantee 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. 6 www.irf.com © 2015 International Rectifier Submit Datasheet Feedback June 23, 2015 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_Hot and Ratio_Cold 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 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 TerminalSC LoadSC L SC 0.1 µH L supply + L SC = 5 µH R SC 10 mohm 100 mohm L SC R SC 7 www.irf.com © 2015 International Rectifier Submit Datasheet Feedback June 23, 2015 Over power shut down protection Vcc - Source (V) The AUIPS6121R integrates an over-power protection in order to limit the thermal stress in the mosfet during certain conditions like overload or under voltage. The power is measured by monitoring the voltage between Vcc and Source. The device latches more quickly when the power is higher. 40 35 30 25 20 15 10 5 0 VCC Vref C R Vrc Psd_UV + - Current proportional of Vds value 0 1 2 3 When Vrc>Vref: The device latches OUT 4 Over power shut down time (ms) When the device is latched: VRC is discharge with an internal constant (Psd rst). Typical in low voltage condition with a short circuit on the output, the voltage on the Vcc pin will oscillate around the under voltage protection and the 'over-current shut down' will not be triggered. The 'Over power shut down' protection will turn off the part after the time ‘Psd_UV' for preventing thermal stress of the device. R L Vin-Gnd Vcc - Out Vin Vcc IN AUIPS6121R Ifb Current feedback Out Isdf Battery 10k Iout Input Rifb On Logic Ground Off Power Ground Psd_UV Ifault Ifb 8 www.irf.com © 2015 International Rectifier Submit Datasheet Feedback June 23, 2015 T clamp Vcc-Vin 80% Vcc-Vin 20% Ids 80% Vcc Vout 20% Td on Vds Td off Tr Vds clamp Tf See Application Notes to evaluate power dissipation Figure 2 – Active clamp waveforms Figure 1 – IN rise time & switching definitions 30 I shutdown Ids Tj Tshutdown Tsd 165°C V fault Vifb Icc off, supply leakage current (µA) Vin 25 20 15 10 5 0 -50 0 50 100 150 Tj, junction temperature (°C) Figure 3 – Protection timing diagram 9 www.irf.com © 2015 International Rectifier Figure 4 – Icc off (µA) VsTj (°C) Submit Datasheet Feedback June 23, 2015 6 5 5 4 4 Vih and Vil (V) Iccoff, supply current (µA) 6 3 2 1 VIH 3 VIL 2 1 0 0 0 10 20 30 -50 Vcc-Vin, supply voltage (V) 25 50 75 100 125 150 Figure 6 – Vih and Vil (V) VsTj (°C) 100 150 % 100 % 50% -50 0 50 100 150 Tj, junction temperature (°C) Figure 7 - Normalized Rds(on) (%) Vs Tj (°C) www.irf.com © 2015 International Rectifier Zth, transient thermal impedance (°C/W) 200 % Rds(on), Drain-to-Source On Resistance (Normalized) 0 Tj, junction temperature (°C) Figure 5 – Icc off (µA) VsVcc-Vin (V) 10 -25 10 1 0.1 0.01 1e-5 1e-4 1e-3 1e-2 1e-1 1e+0 1e+1 1e+2 1e+3 Time (s) Figure 8 – Transient thermal impedance (°C/W) Vs time (s) Submit Datasheet Feedback June 23, 2015 100 100 Tsd, time to shutdown(s) Max. output current (A) 10 10 1 0.1 0.01 '-40°C '+25°C 0.001 '+125°C 1 1.E-03 0.0001 1.E-02 1.E-01 1.E+00 1.E+01 Inductance (mH) Figure 9 – Max. Iout (A) Vs inductance (mH) 11 www.irf.com © 2015 International Rectifier 0 10 20 30 40 50 60 70 80 90 Iout, output current (A) Figure 10 – Tsd (s) Vs I out (A) SMD with 6cm² Submit Datasheet Feedback June 23, 2015 Case Outline 5 Lead – DPAK Note: For the most current drawings please refer to the IR website at: http://www.irf.com/package/ 12 www.irf.com © 2015 International Rectifier Submit Datasheet Feedback June 23, 2015 Tape & Reel 5 Lead – DPAK Note: For the most current drawings please refer to the IR website at: http://www.irf.com/package/ 13 www.irf.com © 2015 International Rectifier Submit Datasheet Feedback June 23, 2015 Part Marking Information 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 DPAK-5L Machine Model ESD Human Body Model Charged Device Model IC Latch-Up Test RoHS Compliant † MSL2,260°C (per IPC/JEDEC J-STD-020) Class M3 (+/-300V) (per AEC-Q100-003) Class 2 (+/-3000V) (per AEC-Q100-002) Class C6 (+/-1000V) (per AEC-Q100-011) Class II (per AEC-Q100-004) Yes Qualification standards can be found at International Rectifier’s web site http://www.irf.com/ 14 www.irf.com © 2015 International Rectifier Submit Datasheet Feedback June 23, 2015 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. 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