AUIPS71411G [INFINEON]
CURRENT SENSE HIGH SIDE SWITCH; 电流检测高压侧开关
| 型号： | AUIPS71411G |
| 厂家： | 
Infineon |
| 描述： | CURRENT SENSE HIGH SIDE SWITCH |
| 文件： | 总14页 (文件大小：258K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
February, 21st 2010
Automotive grade
AUIPS71411G
CURRENT SENSE HIGH SIDE SWITCH
Features
Product Summary
Suitable 24V battery operation
Over current shutdown
Over temperature shutdown
Current sensing
Active clamp
Low current
Rds(on)
Vclamp
Current shutdown 5A min.
100m max.
65V
ESD protection
Optimized Turn On/Off for EMI
Applications
Solenoid
24V loads for trucks
Packages
Description
The AUIPS71411G is a fully protected four terminal high
side switch specifically designed for 24V battery
application. It features current sensing, over-current, over-
temperature, 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.
SO8
Typical Connection
Vcc
Out
IPS
IN
Battery
Ifb
Current feeback
10k
Input
Load
1.5k
On
Logic
Ground
Power
Ground
Off
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AUIPS71411G
†
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.
MSL2, 260°C
SOIC-8L
Moisture Sensitivity Level
(per IPC/JEDEC J-STD-020)
Class M2 (200 V)
(per AEC-Q100-003)
Class H1C (1500 V)
Machine Model
ESD
Human Body Model
(
)
per AEC-Q100-002
Class C5 (1000 V)
Charged Device Model
(per AEC-Q100-011)
ClassII, Level A
(per AEC-Q100-004)
Yes
IC Latch-Up Test
RoHS Compliant
†
††
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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AUIPS71411G
Absolute Maximum Ratings
Absolute maximum ratings indicate sustained limits beyond which damage to the device may occur. All voltage parameters
are referenced to the ground lead. (Tambient=25°C unless otherwise specified).
Symbol
Vout
Parameter
Maximum output voltage
Min. Max. Units
Vcc-60 Vcc+0.3
V
Vcc-Vin max. Maximum Vcc voltage
-16
-50
65
10
50
V
mA
V
Iifb, max.
Vcc sc.
Maximum feedback current
Maximum Vcc voltage with short circuit protection see page 6
Maximum power dissipation (internally limited by thermal protection)
Rth=100°C/W
Pd
W
-40
1.25
150
Tj max.
Max. storage & operating junction temperature
°C
Thermal Characteristics
Symbol
Parameter
Typ. Max. Units
Rth1
Thermal resistance junction to ambient SO8
100
°C/W
Recommended Operating Conditions
These values are given for a quick design. For operation outside these conditions, please consult the application notes.
Symbol
Iout
Parameter
Min. Max. Units
Continuous output current, Tambient=85°C, Tj=125°C
Rth=100°C/W
Ifb resistor
A
1.5
RIfb
1.5
k
3
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AUIPS71411G
Static Electrical Characteristics
Tj=25°C, Vcc=28V (unless otherwise specified)
Symbol
Parameter
Min. Typ. Max. Units Test Conditions
Vcc op.
Rds(on)
Operating voltage
6
0.6
60
60
1.5
60
100
180
3
3
3
V
75
135
1
ON state resistance Tj=25°C
ON state resistance Tj=150°C(2)
Supply leakage current
Output leakage current
Input current while on
Vcc to Vout clamp voltage 1
Vcc to Vout clamp voltage 2
High level Input threshold voltage
Low level Input threshold voltage
Forward body diode voltage Tj=25°C
Forward body diode voltage Tj=125°C
Ids=2A
m
Icc off
Iout off
I in on
V clamp1
V clamp2
Vih(1)
Vin=Vcc / Vifb=Vgnd
Vout=Vgnd
Vcc-Vin=28V
Id=10mA
Id=6A see fig. 2
Id=10mA
µA
1
1.6
64
65
3
2.3
0.8
0.65
mA
72
4.5
0.9
0.75
V
Vil(1)
If=1A
(1) Input thresholds are measured directly between the input pin and the tab.
Switching Electrical Characteristics
Vcc=28V, Resistive load=27, Tj=25°C
Symbol
Tdon
Tr
Tdoff
Tf
Parameter
Min. Typ. Max. Units Test Conditions
Turn on delay time to 20%
Rise time from 20% to 80% of Vcc
Turn off delay time
4
2
20
2.5
10
5
40
5
20
10
80
10
µs
See fig. 1
µs
Fall time from 80% to 20% of Vcc
Protection Characteristics
Symbol
Tsd
Parameter
Min. Typ. Max. Units
Test Conditions
See fig. 3 and fig. 11
See fig. 3 and page 6
See fig. 3
10
4
Over temperature threshold
Over-current shutdown
Ifb after an over-current or an over-
temperature (latched)
150(2) 165
°C
A
Isd
I fault
5
7
2.7
3.3
mA
Current Sensing Characteristics
Symbol
Ratio
Parameter
Min. Typ. Max. Units
Test Conditions
Iload=2A
Tj=-40°C to +150°C
Iout<2A
I load / Ifb current ratio
I load / Ifb variation over temperature(2)
Load current offset
2000 2400
2800
Ratio_TC
I offset
-5%
-0.2
0
0
0
8
+5
0.2
100
%
A
µA
Ifb leakage
Ifb leakage current
Iout=0A
(2) Guaranteed by design
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AUIPS71411G
Lead Assignments
8 7 6 5
1- IN
2- IFB
3- Out
4- Out
5-6-7-8 Vcc
1 2 3 4
SO8
Functional Block Diagram
All values are typical
VCC
Charge
Pump
3V
60V
75V
1.5mA
75V
+
-
Driver
75V
Reset
LatchQ
Set
Iout > 7A
Diag
-
+
Tj > 165°C
IN
IFB OUT
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AUIPS71411G
Truth Table
Op. Conditions
Normal mode
Normal mode
Open load
Input
H
L
H
L
H
L
H
L
Output
Ifb pin voltage
L
H
L
H
L
L
L
L
0V
I load x Rfb / Ratio
0V
0V
0V
Open load
Short circuit to GND
Short circuit to GND
Over temperature
Over temperature
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 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
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 ZTH(tCLAMP
)
Where:
is the thermal impedance at tCLAMP and can be read from the thermal impedance curves given in the
)
ZTH(tCLAMP
data sheets.
: Power dissipation during active clamp
PCL VCL ICLavg
: Typical VCLAMP value.
VCL 65V
ICL
: Average current during active clamp
: Active clamp duration
ICLavg
2
ICL
tCL
di
dt
VBattery VCL
di
dt
: Demagnetization current
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.
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 11).
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AUIPS71411G
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
Then the parameters of the datasheet are computed by 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 3.
The Ioffset variation depends directly of 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
Out
L SC
0.1 µH
10 µH
R SC
10 mohm
100 mohm
IPS
Terminal SC
Load SC
L SC
R SC
7
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AUIPS71411G
T clamp
Vcc-Vin
Ids
80%
Vcc-Vin
20%
80%
Vcc
Vout
20%
Td on
Td off
Vds
Vds clamp
Tr
Tf
See Application Notes to evaluate power dissipation
Figure 2 – Active clamp waveforms
Figure 1 – IN rise time & switching definitions
10
8
Vin
Ids
I shutdown
6
4
Tj
Tsd
Tshutdown
2
165°C
V fault
Vifb
0
-50
0
50
100
150
Tj, junction temperature (°C)
Figure 3 – Protection timing diagram
Figure 4 – Icc off (µA) Vs Tj (°C)
8
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AUIPS71411G
20
15
10
5
4
3
2
1
0
VIH
VIL
0
-50 -25
0
25 50 75 100 125 150
Tj, junction temperature (°C)
0
10
20
30
40
50
Vcc-Vin, supply voltage (V)
Figure 5 – Icc (mA) Vs Vcc-Vin (V)
Figure 6 – Vih and Vil (V) Vs Tj (°C)
200%
150%
100%
50%
100.00
10.00
1.00
0.10
0.01
1.E- 1.E- 1.E- 1.E- 1.E- 1.E+0 1.E+0 1.E+0
05 04 03 02 01
-50
0
50
100
150
0
1
2
Tj, junction temperature (°C)
Time (s)
Figure 8 – Transient thermal impedance (°C/W)
Vs time (s)
Figure 7 - Normalized Rds(on) (%) Vs Tj (°C)
9
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AUIPS71411G
100
10
1
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
25°C
150°C
1.E+01
1.E+02
1.E+03
1.E+04
1.E+05
0
1
2
3
4
Inductance (µH)
Iout, output current (A)
Figure 9 – Max. Iout (A) Vs inductance (µH)
Figure 10 – Ifb (mA) Vs Iout (A)
10
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AUIPS71411G
Case Outline - SO-8
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AUIPS71411G
Tape & Reel - SO-8
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AUIPS71411G
Part Marking Information
Ordering Information
Standard Pack
Form
Base Part Number
Package Type
Complete Part Number
Quantity
95
Tube
Tape and reel
AUIPS71411G
AUIPS71411G
SO8
2500
AUIPS71411GTR
13
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AUIPS71411G
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.
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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
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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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designation “AU”. Buyers acknowledge and agree that, if they use any non-designated products in automotive
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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
14
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