November, 29th 2009
Automotive grade
AUIPS7111S
CURRENT SENSE HIGH SIDE SWITCH
Features
Suitable for 24V systems
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Over current shutdown
Over temperature shutdown
Current sensing
Active clamp
Low current
Reverse battery
ESD protection
Optimized Turn On/Off for EMI
Applications
24V loads for trucks
Description
The AUIPS7111S is a fully protected four terminal high
side switch. It fe atures current sensing, o ver-cur rent, over-
temperature, ESD protection and drain to source active
clamp. Whe n the i nput volta ge Vc c - Vin i s h igher t han t he
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.
Product Summary
Rds(on) 7.5 m max.
Vclamp 65V
Current shutdown 30A min.
Package
D²Pak-5 leads
Typical Connection
Out
IPS
IN
Rifb
Vcc
Load
Battery
Input
Power
Ground
Ifb
Logic
Ground
Current feebac k 10k
On
Off
AUIPS7111S
Qualification Information† Automotive
(per AEC-Q100††)
Qualification Level 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.
Moisture Sensitivity Level D2PAK-5L MSL1, 260°C
(per IPC/JEDEC J-STD-020)
Machine Model Class M3 (300V)
(per AEC-Q100-003)
Human Body Model Class H2 (2,500 V)
(per AEC-Q100-002)
ESD
Charged Device Model Class C4 (1000 V)
(per AEC-Q100-011)
IC Latch-Up Test Class II, Level A
(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.
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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
Vout Maximum output voltage Vcc-60 Vcc+0.3 V
Vcc-Vin max. Maximum Vcc voltage -32 60 V
Ifb, max. Maximum feedback current -50 10 mA
Maximum power dissipation (internally limited by thermal protection)
Pd Tambient=25°C, Tj=150°C Rth=50°C/W D²Pack 6cm² footprint 2.5 W
Tj max. Max. storage & operating junction temperature -40 150 °C
Thermal Characteristics
Symbol Parameter Typ. Max. Units
Rth1 Thermal resistance junction to ambient D²Pak Std footprint 60
Rth2 Thermal resistance junction to ambient D²pak 6cm² footprint 40
Rth3 Thermal resistance junction to case D²pak 0.8 °C/W
Recommended Operating Conditions
These values are given for a quick design.
Symbol Parameter Min. Max. Units
Continuous output current, Tambient=85°C, Tj=125°C Iout
Rth=40°C/W, D²pak 6cm² footprint 10 A
Rifb 1.5 k
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AUIPS7111S
Static Electrical Characteristics
Tj=-40..150°C, Vcc=8..50V (unless otherwise specified)
Symbol Parameter Min. Typ. Max. Units Test Conditions
Vcc op. Operating voltage range 8 50 V
ON state resistance Tj=25°C 6 7.5
Rds(on) ON state resistance Tj=150°C 12 15 m Ids=10A
Icc off Supply leakage current 2 6
Iout off Output leakage current 2 6 µA Vin=Vcc=28V,Vifb=Vgnd
Vout=Vgnd, Tj=25°C
V clamp1 Vcc to Vout clamp voltage 1 60 65 Id=10mA
V clamp2 Vcc to Vout clamp voltage 2 66 Id=10A see fig. 2
Vih(2) High level Input threshold voltage 5.5 6.8 Id=10mA
Vil(2) Low level Input threshold voltage 3.5 5
V
Reverse On state resistance Tj=25°C 7 10
m
Rds(on) rev Reverse On state resistance Tj=150°C 13 18 Isd=10A,
Vcc-Vin=7..32V
Forward body diode voltage Tj=25°C 0.75 0.8 Vf Forward body diode voltage Tj=125°C 0.6 0.65 V If=10A
Rin Internal input resistor 180 250 350 Tj=-40°C..125°C
(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 Parameter Min. Typ. Max. Units Test Conditions
tdon Turn on delay time to 20% 25 35 50
tr Rise time from 20% to 80% of Vcc 8 17 25 µs
tdoff Turn off delay time 50 80 120
tf Fall time from 80% to 20% of Vcc 5 13 35 µs See fig. 1
Protection Characteristics
Tj=-40..150°C, Vcc=8..50V (unless otherwise specified)
Symbol Parameter Min. Typ. Max. Units Test Conditions
Tsd Over temperature threshold 150(3) 165 °C See fig. 3 and fig. 10
Isd Over-current shutdown 30 45 60 A See fig. 3 and page 7
I fault Ifb after an over-current or an over-
temperature (latched) 2.4 4 6 mA See fig. 3
Current Sensing Characteristics
Tj=-40..150°C, Vcc=8..50V (unless otherwise specified)
Symbol Parameter Min. Typ. Max. Units Test Conditions
Ratio I load / Ifb current ratio 11000 13000 14500
Ratio_TC I load / Ifb variation over temperature -5% 0 +5 % Iout=10A
I offset Load current offset -0.25 0 0.25 A Iout<10A
Ifb leakage Ifb leakage current on 0 6 15 µA Iout=0A, Tj=25°C
(3) Guaranteed by design
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AUIPS7111S
Lead Assignments
1- In
2- Ifb
3- Vcc
4- Out
5- Out 1 2 4 5
D²Pak - 5 leads
3- Vcc
Functional Block Diagram
All values are typical
Diag
Charge
Pump
Driver
Reverse
Battery
Protection
IFB OUT
VCC
75V
250
Tj > 165°C
Iout > 45A
58V
75V
-
+
75V
3mA
IN
Set
Reset
LatchQ
+
-
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AUIPS7111S
Truth Table
Op. Conditions Input Output Ifb pin voltage
Normal mode H L 0V
Normal mode L H I load x Rfb / Ratio
Open load H L 0V
Open load L H Ifb leakage x Rifb
Short circuit to GND H L 0V
Short circuit to GND L L I fault x Rifb (latched)
Over temperature H L 0V
Over temperature L L 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:
)t(ZP CLAMPTHCLTj
Where: is the thermal impedance at tCLAMP and can be read from the thermal impedance curves given in the
data sheets. )t(Z CLAMPTH
CLavgCLCL IVP : Power dissipation during active clamp
V39VCL : Typical VCLAMP value
2
I
ICL
CLavg : Average current during active clamp
dt
di
I
tCL
CL : Active clamp duration
LVV
dt
di CLBattery
: Demagnetization current
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
Iout
Ifb
Ifb leakage
Ifb2
Ifb1
Iout2 Iout1 I offset
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).
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AUIPS7111S
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Vds
Ids
Vcc-Vin
Vcc
Vds cl amp
T clamp
See Appli cat ion No t es to evalu at e power dissip at ion
Vout
Vcc-Vin
80%
20%
80%
20%
Td on Tr Td off Tf
Figure 2 – Active clamp waveforms
Figure 1 – IN rise time & switching definitions
0
5
10
15
20
25
30
-50 0 50 100 150
T
j
Tsd
165°C
Icc off, supply leakage current (µA)
Ids
Vin
I shutdown
Tshutdown
Vifb
V fault
Tj, junction temperature (°C)
Figure 3 – Protection timing diagram Figure 4 – Icc off (µA) Vs Tj (°C)
AUIPS7111S
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0
1
2
3
4
5
6
-50 -25 0 25 50 75 100 125 150
VIH
VIL
0.01
0.1
1
10
100
1E-4 1E-3 1E-2 1E-1 1E+0 1E+1 1E+2
Figure 8 – Transient thermal impedance (°C/W)
Vs time (s)
Zth, transient thermal impedance (°C/W)
Time (s)
50%
10
Rds(on), Drain-to-Source On Resistance
(Normalized)
0%
150%
200%
-50 0 50 100 150
Figure 7 - Normalized Rds(on) (%) Vs Tj (°C)
Tj, junction temperature (°C)
Tj, junction temperature (°C)
Vih and Vil (V)
0
1
2
3
4
5
0 10203040
Icc, supply current (µA)
50
Vcc-Vout, supply voltage (V)
Figure 5 – Icc Off(µA) Vs Vcc-Vout (V) Figure 6 – Vih and Vil (V) Vs Tj (°C)
AUIPS7111S
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1
10
100
1.E+00 1.E+01 1.E+02 1.E+03 1.E+04 0.1
1
10
100
0102030
Tsd, time to shutdown(s)
Max. output current (A)
40
'-40°C
'+25°C
'+125°C
Inductance (µH) Iout, output current (A)
Figure 10 – Tsd (s) Vs I out (A)
SMD with 6cm²
Figure 9 – Max. Iout (A) Vs inductance (µH)
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
Standard Pack
Base Part Number Package Type Form Quantity
Complete Part Number
Tube 50 AUIPS7111S
Tape and reel left 800 AUIPS7111STRL
AUIPS7111R D2-Pak-5-Leads
Tape and reel right 800 AUIPS7111STRR
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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 a ckno w ledgment.
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 p rodu ct 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 rest rictions.
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 stateme nts.
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
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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
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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
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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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