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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
DPak-5 leads
Typical Connection
Vcc IN Ifb Current feeback Input
On Off
IPS
Battery Out
10k Rifb Logic Ground Power Ground Load
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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, 260C (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
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AUIPS7111S
Absolute Maximum Ratings
Absolute maximum ratings indicate sustained limits beyond which damage to the device may occur. (Tj= -40C..150C, 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=25C, Tj=150C Rth=50C/W DPack 6cm 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 DPak Std footprint Thermal resistance junction to ambient Dpak 6cm footprint Thermal resistance junction to case Dpak
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=85C, Tj=125C Rth=40C/W, Dpak 6cm footprint
Min.
Max.
10
Units
A k
1.5
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AUIPS7111S
Static Electrical Characteristics
Tj=-40..150C, 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=25C Id=10mA Id=10A see fig. 2 Id=10mA Isd=10A, Vcc-Vin=7..32V If=10A Tj=-40C..125C
Operating voltage range 8 50 V ON state resistance Tj=25C 6 7.5 m ON state resistance Tj=150C 12 15 Icc off Supply leakage current 2 6 A 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=25C 7 10 m Reverse On state resistance Tj=150C 13 18 Vf Forward body diode voltage Tj=25C 0.75 0.8 V Forward body diode voltage Tj=125C 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=25C
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
s
Test Conditions
See fig. 1
s
Protection Characteristics
Tj=-40..150C, 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..150C, Vcc=8..50V (unless otherwise specified)
Symbol
Parameter
Min.
Typ.
Max.
14500 +5 0.25 15
Units
% A A
Test Conditions
Iout=10A Iout<10A Iout=0A, Tj=25C
Ratio I load / Ifb current ratio Ratio_TC I load / Ifb variation over temperature I offset Load current offset Ifb leakage Ifb leakage current on (3) Guaranteed by design
11000 13000 -5% 0 -0.25 0 0 6
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AUIPS7111S
Lead Assignments
3- Vcc
1- In 2- Ifb 3- Vcc 4- Out 5- Out
12
45
DPak - 5 leads
Functional Block Diagram
All values are typical
VCC
75V
3mA
Charge Pump
+ -
58V
75V
Driver 75V
Reset Set
Latch
Q
Reverse Battery Protection Diag
+
Iout > 45A
250
Tj > 165C
IN
IFB OUT
5
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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 load + Vcc / 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.
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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@-40C= I offset@25C / 0.7 I offset@150C= I offset@25C / 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).
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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 (A)
25 20 15 10 5 0 -50 0 50 100 150
Tj
Tsd 165C V fault
Tshutdown
Vifb
Tj, junction temperature (C) Figure 3 - Protection timing diagram Figure 4 - Icc off (A) Vs Tj (C)
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AUIPS7111S
5
6 5 4
4
Icc, supply current (A)
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(A) 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)
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AUIPS7111S
100
100
Tsd, time to shutdown(s)
Max. output current (A)
10
10
1
'-40C '+25C '+125C
0.1
1 1.E+00
1.E+01
1.E+02
1.E+03
1.E+04
0
10
20
30
40
Inductance (H) Figure 9 - Max. Iout (A) Vs inductance (H)
Iout, output current (A) Figure 10 - Tsd (s) Vs I out (A) SMD with 6cm
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AUIPS7111S
Case Outline D2PAK - 5 Leads
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AUIPS7111S
Tape & Reel D2PAK - 5 Leads
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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
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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. Reproduction of IR information in IR data books or data sheets is permissible only if reproduction is without alteration and is accompanied by all associated warranties, conditions, limitations, and notices. Reproduction of this information with alterations is an unfair and deceptive business practice. IR is not responsible or liable for such altered documentation. Information of third parties may be subject to additional restrictions. Resale of IR products or serviced with statements different from or beyond the parameters stated by IR for that product or service voids all express and any implied warranties for the associated IR product or service and is an unfair and deceptive business practice. IR is not responsible or liable for any such statements. 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 www.irf.com
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AUIPS7111S
"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: 233 Kansas St., El Segundo, California 90245 Tel: (310) 252-7105
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