AUIPS7145R Data Sheet (623 KB, EN)

th
February, 10 2012
Automotive grade
AUIPS7145R
CURRENT SENSE HIGH SIDE SWITCH
Features
Product Summary
Suitable for 24V systems
Over current shutdown
Over temperature shutdown
Current sensing
Active clamp
Reverse circulation immunization
Low current
ESD protection
Optimized Turn On/Off for EMI
Rds(on)
100m max.
Vclamp
65V
Current shutdown 20A min.
Applications
Packages
21W Filament lamp
Solenoid
24V loads for trucks
Description
The AUIPS7145R is a fully protected four terminal 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 current of the lamp.
DPak
Typical Connection
Vcc
IPS
IN
Battery
Ifb
Current feeback
Input
On
Off
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Out
10k
Load
2.5k
Logic
Ground
Power
Ground
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AUIPS7145R
Qualification Information†
Qualification Level
Moisture Sensitivity Level
Machine Model
ESD
Human Body Model
Charged Device Model
IC Latch-Up Test
RoHS Compliant
†
††
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.
DPAK-5L
MSL1, 260°C
(per IPC/JEDEC J-STD-020)
Class M2 (200 V)
(per AEC-Q100-003)
Class H1C (1500 V)
(per AEC-Q100-002)
Class C5 (1000 V)
(per AEC-Q100-011)
Class II, Level A
(per AEC-Q100-004)
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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AUIPS7145R
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.
Vout
I rev
Isd cont.
Vcc-Vin max.
Iifb, max.
Vcc sc.
Maximum output voltage
Maximum reverse pulsed current (t=100µs) see page 8
Maximum diode continuous current Tambient=25°C, Rth=70°C/W
Maximum Vcc voltage
Maximum feedback current
Maximum Vcc voltage with short circuit protection see page 8
Maximum power dissipation (internally limited by thermal protection)
Rth=50°C/W DPack 6cm² footprint
Maximum operating junction temperature
Maximum storage junction temperature
Vcc-60 Vcc+0.3
30
2.3
-16
60
-50
10
50
Pd
Tj max.
Max.
-40
-55
2.5
150
150
Typ.
Max.
Units
V
A
V
mA
V
W
°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
70
50
4
Units
°C/W
Recommended Operating Conditions
These values are given for a quick design.
Symbol
Parameter
Iout
Continuous output current, Tambient=85°C, Tj=125°C
Rth=50°C/W, Dpak 6cm² footprint
Ifb resistor
RIfb
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Min.
Max.
Units
A
2.1
1.5
k
3
AUIPS7145R
Static Electrical Characteristics
Tj=-40°C..150°C, Vcc=6-50V (unless otherwise specified)
Symbol
Parameter
Min.
Typ.
Vcc op.
Rds(on)
Operating voltage
6
ON state resistance Tj=25°C
75
ON state resistance Tj=150°C(2)
135
Icc off
Supply leakage current
1
Iout off
Output leakage current
1
I in on
Input current while on
0.6
2
V clamp1
Vcc to Vout clamp voltage 1
60
64
V clamp2
Vcc to Vout clamp voltage 2
60
65
Vih(1)
High level Input threshold voltage
3
Vil(1)
Low level Input threshold voltage
1.5
2.3
Vf
Forward body diode voltage Tj=25°C
0.8
Forward body diode voltage Tj=125°C
0.65
(1) Input thresholds are measured directly between the input pin and the tab.
Max.
Units
60
100
180
3
3
4
V
72
5
4.7
0.9
0.75
m
µA
mA
V
Test Conditions
Ids=2A
Vin=Vcc / Vifb=Vgnd
Vout=Vgnd, Tj=25°C
Vcc-Vin=28V, Tj=25°C
Id=10mA
Id=6A see fig. 2
Id=10mA
If=1A
Switching Electrical Characteristics
Vcc=28V, Resistive load=27 , Tj=25°C
Symbol
Parameter
tdon
tr
tdoff
tf
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.
Typ.
Max.
4
2
20
2.5
10
5
40
5
20
10
80
10
Min.
Typ.
Max.
150(2)
20
2.2
165
25
3
Units
Test Conditions
µs
See fig. 1
µs
Protection Characteristics
Tj=-40°C..150°C, Vcc=6-50V (unless otherwise specified)
Symbol
Parameter
Tsd
Isd
I fault
Over temperature threshold
Over-current shutdown
Ifb after an over-current or an overtemperature (latched)
35
5
Units
°C
A
mA
Test Conditions
See fig. 3 and fig.11
See fig. 3 and page 7
See fig. 3
Current Sensing Characteristics
Tj=-40°C..150°C, Vcc=6-50V (unless otherwise specified). Specified 500µs after the turn on. Vcc-Vifb>4V
Symbol
Parameter
Ratio
I load / Ifb current ratio
Ratio_TC
I load / Ifb variation over temperature(2)
I offset
Load current offset
Ifb leakage
Ifb leakage current On in open load
(2) Guaranteed by design
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Min.
Typ.
Max.
Units
2000
-5%
-0.02
0
2400
0
0
1
2800
+5
0.02
10
%
A
µA
Test Conditions
Iout<4A
Tj=-40°C to +150°C
Iout<4A
Iout=0A, Vcc-Vin=28V
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AUIPS7145R
Lead Assignments
Functional Block Diagram
All values are typical
VCC
Charge
Pump
3V
75V
1.5mA
60V
75V
+
-
Driver
Reset
Set
100
Iout > 25A
Latch
75V
Q
Diag
+
Tj > 165°C
IN
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IFB OUT
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AUIPS7145R
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
0V
0V
V fault (latched)
0V
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 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 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 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
65V : Typical VCLAMP value.
ICLavg
t CL
di
dt
ICL : Average current during active clamp
2
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 free wheeling diode is required.
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AUIPS7145R
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. This behavior is shown in Figure 11.
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 on the Rdson :
I offset@-40°C= I [email protected]°C / 0.8
I [email protected]°C= I [email protected]°C / 1.9
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AUIPS7145R
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
Terminal SC
Load SC
L SC
0.1 µH
10 µH
R SC
10 mohm
100 mohm
L SC
R SC
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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AUIPS7145R
T clamp
Vcc-Vin
80%
Vcc-Vin
20%
Ids
80%
Vcc
Vout
20%
Td on
Td off
Tr
Vds
Vds clamp
Tf
See Application Notes to evaluate power dissipation
Figure 2 – Active clamp waveforms
Figure 1 – IN rise time & switching definitions
Vin
I shutdown
Ids
Tj
Tshutdown
Tsd
165°C
V fault
Vifb
Icc off, supply leakage current (µA)
10
8
6
4
2
0
-50
0
50
100
150
Tj, junction temperature (°C)
Figure 3 – Protection timing diagram
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Figure 4 – Icc off (µA) Vs Tj (°C)
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AUIPS7145R
4
3
10
Vih and Vil (V)
Icc, supply current (µA)
15
5
2
VIH
1
VIL
0
0
0
10
20
30
40
50
-50
60
-25
Vcc-Vout, supply voltage (V)
25
50
75
100
125
150
Tj, junction temperature (°C)
Figure 5 – Icc off (µA) Vs Vcc-Vout (V)
Figure 6 – Vih and Vil (V) Vs Tj (°C)
200%
100.00
Zth, transient thermal impedance (°C/W)
Rds(on), Drain-to-Source On Resistance
(Normalized)
0
10.00
150%
100%
50%
-50
0
50
100
Tj, junction temperature (°C)
Figure 7 - Normalized Rds(on) (%) Vs Tj (°C)
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150
1.00
0.10
0.01
1.E05
1.E04
1.E03
1.E02
1.E- 1.E+0 1.E+0 1.E+0
01
0
1
2
Time (s)
Figure 8 – Transient thermal impedance (°C/W)
Vs time (s)
10
AUIPS7145R
6.0
Ifb, current feedback current (mA)
Max. output current (A)
100
10
1
1.E+01
-40°C
5.0
25°C
4.0
3.0
150°C
2.0
1.0
0.0
1.E+02
1.E+03
1.E+04
1.E+05
Inductance (µH)
0
2
4
6
8
10
12
14
Iout, output current (A)
Figure 9 – Max. Iout (A) Vs inductance (µH)
Figure 10 – Ifb (mA) Vs Iout (A)
100
Tsd, time to shutdown(s)
10
1
0.1
0.01
'-40°C
'+25°C
0.001
'+125°C
0.0001
0
5
10
15
20
Iout, output current (A)
Figure 11 – Tsd (s) Vs I out (A)
SMD with 6cm²
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AUIPS7145R
Case Outline 5 Lead – DPAK
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AUIPS7145R
Tape & Reel
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5 Lead – DPAK
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AUIPS7145R
Part Marking Information
Ordering Information
Base Part Number
Standard Pack
Package Type
Complete Part Number
Form
Tube
AUIPS7145R
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D-Pak-5-Lead
Quantity
75
AUIPS7145R
Tape and reel
2000
AUIPS7145RTR
Tape and reel left
3000
AUIPS7145RTRL
Tape and reel right
3000
AUIPS7145RTRR
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AUIPS7145R
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
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Only products certified as military grade by the Defense Logistics Agency (DLA) of the US Department of Defense, are
designed and manufactured to meet DLA military specifications required by certain military, aerospace or other
applications. Buyers acknowledge and agree that any use of IR products not certified by DLA as military-grade, in
applications requiring military grade products, is solely at the Buyer’s own 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:
101 N. Sepulveda Blvd., El Segundo, California 90245
Tel: (310) 252-7105
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AUIPS7145R
Revision History
Revision
A1
A2
A3
B
C
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Date
Notes/Changes
12/11/2009
10/03/2010
20/04/2010
26/08/2011
10/02/2012
First release
Add tri-temp
DR3 release
Add Vil max page 4
Update storage temperature page 3
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