March, 24th 2011
Automotive grade
AUIPS7142G
DUAL CHANNELS CURRENT SENSE HIGH SIDE SWITCH
Features
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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 complia nt
Applications
21W Filament lamp
Solenoid
24V truck loads
Description
The AUIPS7142G is a fully pr otected 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 cur rent of the lamp.
Product Summary
Rds(on) 100m max.
Vclamp 65V
Current shutdown 20A min.
Package
SOIC16L-Wide Body
Typical Connection
Out
IPS
IN
2.5k
Vcc
Load
Battery
Input
Power
Ground
Ifb
Logic
Ground
Current feebac k 10k
On
Off
AUIPS7142G
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 SOIC-16L WB MSL2, 260°C
(per IPC/JEDEC J-STD-020)
Machine Model Class M4 (+/-450V)
(per AEC-Q100-003)
Human Body Model Class H2 (+/-4000V)
(per AEC-Q100-002)
ESD
Charged Device Model Class C4 (+/-1000V)
(per AEC-Q100-011)
IC Latch-Up Test ClassII, 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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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 Min. Max. Units
Vout Maximum output voltage Vcc-60 Vcc+0.3 V
I rev Maximum reverse pulsed current (t=100µs) see page 8 30
Isd cont. Maximum diode continuous current Tambient=25°C, Rth=40°C/W / per
channel 1.7 A
Vcc-Vin max. Maximum Vcc voltage -16 60 V
Iifb, max. Maximum feedback current -50 10 mA
Vcc sc. Maximum Vcc voltage with short circuit protection see page 8 50 V
Maximum power dissipation (internally limited by thermal protection)
Pd Rth=40°C/W 3 W
Tj max. Max. storage & operating junction temperature -40 150 °C
Thermal Characteristics
Symbol Parameter Typ. Max. Units
Rth1 Thermal resistance junction to ambient 6cm² footprint one Mosfet on 45
Rth2 Thermal resistance junction to ambient 6cm² footprint two Mosfet on 40 °C/W
note : Tj-Tambient=Power dissipated in the 2 channel x Rth
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, 6cm² footprint 1.5 A
RIfb Ifb resistor 1.5
k
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AUIPS7142G
Static Electrical Characteristics
Tj=-40°C ..150° C, Vcc= 6-50 V (unl ess otherw ise specif ied)
Symbol Parameter Min. Typ. Max. Units Test Conditions
Vcc op. Operating voltage 6 60 V
ON state resistance Tj=25°C 75 100
Rds(on) ON state resistance Tj=150°C(2) 135 180 m Ids=2A
Icc off Supply leakage current 1 3
Iout off Output leakage current 1 3 µA Vin=Vcc / Vifb=Vgnd
Vout=Vgnd, Tj=25°C
I in on Input current while on 0.6 2 4 mA Vcc-Vin=28V, Tj=25°C
V clamp1 Vcc to Vout clamp voltage 1 60 64 Id=10mA
V clamp2 Vcc to Vout clamp voltage 2 60 65 72 Id=6A see fig. 2
Vih(1) High level Input threshold voltage 3 5 Id=10mA
Vil(1) Low level Input threshold voltage 1.5 2.3
Forward body diode voltage Tj=25°C 0.8 0.9
Vf Forward body diode voltage Tj=125°C 0.65 0.75
V
If=1A
(1) Input thresholds are measured directly between the input pin and Vcc.
Switching Electrical Characteristics
Vcc=28V, Resistive load=27, Tj=-40°C..15 0° C
Symbol Parameter Min. Typ. Max. Units Test Conditions
Tdon Turn on delay time to 20% 4 10 20
Tr Rise time from 20% to 80% of Vcc 2 5 10 µs
Tdoff Turn off delay time 20 40 80
Tf Fall time from 80% to 20% of Vcc 2.5 5 10 µs See fig. 1
Protection Characteristics
Tj=-40°C ..150° C, Vcc= 6-50 V (unl ess otherw ise specif ied)
Symbol Parameter Min. Typ. Max. Units Test Conditions
Tsd Over temperature threshold 150(2) 165 °C See fig. 3 and fig.11
Isd Over-current shutdown 20 25 37 A See fig. 3 and page 7
I fault Ifb after an over-current or an over-
temperature (latched) 2.2 3 5 mA See fig. 3
Current Sensing Characteristics
Tj=-40°C ..150° C, Vcc= 6-50 V (unl ess otherw ise specif ied) . Specif ied 50 0µs after th e tur n on. Vcc-V ifb>4V
Symbol Parameter Min. Typ. Max. Units Test Conditions
Ratio I load / Ifb current ratio 2000 2400 2800 Iload<4A
Ratio_TC I load / Ifb variation over temperature(2) -5% 0 +5 % Tj=-40°C to +150°C
I offset Load current offset -0.02 0 0.02 A Iout<4A
Ifb leakage Ifb leakage current On in open load 0 1 10 µA Iout=0A, Vcc-Vin=28V
(2) Guaranteed by design
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AUIPS7142G
Lead Assignments
1 8
SO16W
16 9 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
Functional Block Diagram
All values are typical
Diag
Charge
Pump
Driver
IFB OUT
VCC
75V
100
Tj > 165°C
Io ut > 25A
60V
75V
-
+
75V
IN
Set
Reset
LatchQ
2m A 3V
+
-
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AUIPS7142G
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 0V
Short circuit to GND H L 0V
Short circuit to GND L L V fault (latched)
Over temperature H L 0V
Over temperature L L 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 p art i s guaranteed. The AEC-Q100 qualifi cati on
is run at the maximum operating voltage specified in the datasheet.
Reverse battery
During the reverse battery the Mosfet i s 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 li mit the voltage across the MOSFET to a value below the bod y 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 t CLAMP and c an be read from the thermal impedance curves given in th e
data sheets. )t(Z CLAMPTH
CLavgCLCL IVP : Power dissipation during active clamp
65VVCL : 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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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
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 on the Rdson :
I offset@-40°C= I offset@25°C / 0.8
I offset@150°C= I offset@25°C / 1.9
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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.
Out
IPS
Vcc
L SC
L supply
5µH R suppl y
10mohm
R SC
L SC R SC
Terminal SC 0.1 µH 10 mohm
Load SC 10 µH 100 mohm
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.
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AUIPS7142G
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Vds
Ids
Vcc-Vin
Vcc
Vds cl amp
T clamp
See Appli cat ion No t es t o evaluate power dissipation
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
2
4
6
8
10
-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)
AUIPS7142G
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0
5
10
15
20
010203040 0
1
2
3
4
-50 -25 0 25 50 75 100 125 150
VIH
VIL
Icc, supply current (µA)
Vih and Vil (V)
50
Vcc-Vout, supply voltage (V) Tj, junction temperature (°C)
Figure 5 – Icc off (µA) Vs Vcc-Vout (V) Figure 6 – Vih and Vil (V) Vs Tj (°C)
0.01
0.10
1.00
10.00
100.00
1.E-05 1.E-04 1.E-03 1.E-02 1.E-01 1.E+00 1.E+01 1.E+02
Zth 1 channel
Zth 2 channels
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
Tj, junction temperature (°C)
Figure 7 - Normalized Rds(on) (%) Vs Tj (°C)
AUIPS7142G
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0.0
1.0
2.0
3.0
4.0
5.0
6.0
02468101214
25°C
150°C
-40°C
1
10
100
1.E+01 1.E+02 1.E+03 1.E+04 1.E+05
Ifb, current feedback current (mA)
Max. output current (A)
Inductance (µH) Iout, output current (A)
Figure 9 – Max. Iout (A) Vs inductance (µH) Figure 10 – Ifb (mA) Vs Iout (A)
0.0001
0.001
0.01
0.1
1
10
100
0510152
Tsd, time to shutdown(s)
0
'-40°C/2ch
'25°C/2ch
'125°C/2ch
Iout, output current per channel(A)
Figure 11 – Tsd (s) Vs I out (A)
2 channels on
AUIPS7142G
Case Outline SOIC16W
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AUIPS7142G
Tape and Reel – SOIC16W
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AUIPS7142G
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AUIPS7142G
Part Marking Information
Ordering Information
Standard Pack
Base Part Number Package Type Form Quantity
Complete Part Number
Tube 45 AUIPS7142G
AUIPS7142G SO28W Tape and reel 1500 AUIPS7142GTR
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AUIPS7142G
IMPORTANT NOTICE
Unless specifically designated for the automotive market, International Rectifier Corporation and its subsidiaries (IR)
reserve the right to make corrections, modi ficati ons, enhanc ements, improvements, and other changes to i ts 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 sal e supplied at the time of ord er
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 mand ated by government requirements, testing of all parameters of each produ 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 i n IR data books or data sheets is pe rmissible only if r eproduction is wi thout alteration a nd
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 di fferent from or be yond the parameters stated b y IR for that pro duc t 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, int ended, or auth orized for use as components in s ystems intended f or surgical i mplant into
the body, or in other appli cations intended to support or sustain li fe, or in any other application i n which the failure of the
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reasonable attorney fees arising out of, directly or indirectly, any claim of personal injury or death associated with such
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products are specifically designated by IR as military-grade or “enhanced plastic.” Only products designated by IR as
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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
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AUIPS7142G
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Revision History
Revision Date Notes/Changes
A3 April, 29th 2010 Add tri-temp limits
A4 March, 17th 2011 Au release
A5 March,18th 2011 Update lead free and RoHS 1st page
A6 March, 24th 2011 Add Tape and reel information
