November, 14th 2010
Automotive grade
AUIR3315(S)
PROGRAMMABLE CURRENT SENSE HIGH SIDE SWITCH
Features
Load current feedback
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Programmable over current shutdown
Active clamp
ESD protection
Input referenced to Vcc
Over temperature shutdown
Reverse battery protection
Lead-Free
Description
The AUIR331 5(S) is a fully pr otected 4 t erminals h igh side
switch. The input signal is referenced to Vcc. 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. A current proportional to the
power Mosfet current is sourced to the Ifb pin. Over
current shutdown occurs when Vifb-Vin > 4.7V. The
current shutdown threshold is adjusted by selecting the
proper RIfb. Either over current and over temperature
latches off the switch. The device is reset by pulling the
input pin hi gh. Other int egrate d protect ions ( ESD, rever se
battery, active clamp) make the switch very rugged in
automotive en vironment.
Product Summary
Rds(on) 20 m max.
Vcc op. 6 to 32V
Current Ratio 2800
Prog. Ishutdown 3 to 30A
Vclamp 40V
Packages
TO-220 D²Pak
AUIR3315 Pin 4 and 5 fused
AUIR3315S
Typical Connection
Out
AUIR3315
IN
Rifb
Vcc
Load
Battery
Input
Power
Ground
Ifb
Logic
Ground
Current feeback 10k
On
Off
AUIR3315(S)
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.
D2PAK-5L MSL1, 260°C
(per IPC/JEDEC J-STD-020)
Moisture Sensitivity Level
TO220-5L Not applicable
Machine Model Class M4 (450V)
(per AEC-Q100-003)
Human Body Model Class H3A (4,500 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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AUIR3315(S)
Absolute Maximum Ratings
Absolute maximu m ratings indicate sustained limits beyond which damage to th e device may occur. All voltage parameters
are referenced to Vcc lead. (Tj=-40°..150°C, Vcc=6..26V Tambient=25°C unless otherwise specified).
Symbol Parameter Min. Max. Units
Vcc-Vin Maximum Vcc voltage -16 37
Vcc-Vin cont. Maximum continuous Vcc voltage -16 32
Vcc-Vfb Maximum Ifb voltage -16 33
Vcc-Vout Maximum output voltage -0.3 37
V
Ids cont. Maximum body diode continuous current Rth=60°C/W (1) 2.8
Ids pulsed Maximum body diode pulsed current (1) 100 A
Pd Maximum power dissipation Rth=60°C/W 2 W
Tj max. Max. storage & operating temperature junction temperature -40 150 °C
Min Rfb Minimum on the resistor on Ifb pin 0.3 k
Ifb max. Max. Ifb current -50 50 mA
(1) Limited by junction temperature. Pulsed is also limited by wiring
Thermal Characteristics
Symbol Parameter Typ. Max. Units
Rth1 Thermal resistance junction to ambient D²-Pak Std footprint 60
Rth2 Thermal resistance junction to case D²-Pak 1.6
Rth3 Thermal resistance junction to case TO-220 1.6 °C/W
Recommended Operating Conditions
These valu es are g iven for a quick des ign. For op eratio n outside these conditions, please consult the application notes.
Symbol Parameter Min. Max. Units
Continuous output current Iout
Tambient=85°C, Rth=5°C/W, Tj=125°C 14
A
Tambient=85°C, Rth=60°C/W, Tj=125°C 3.9
Rifb Recommended Ifb resistor (2)(3) 0.5 3.5 k
Pulse min. Minimum turn-on pulse width 1 ms
Fmax. Maximum operating frequency 200 Hz
(2) If Rifb is too low, the device can be damaged.
(3) If Rifb is too high, the device may not switch on.
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AUIR3315(S)
Protection Characteristics
Tj=-40°..150°C, Vcc=6..26V, Rifb=500 to 5k
Symbol Parameter Min. Typ. Max. Units Test Conditions
Vifb-Vin@Isd Over-current shutdown threshold 3.8 4.7 5.9 V
Tsd Over temperature threshold 165 °C See fig. 5
OV Over voltage protection (not latched) 33 35 39 V
Isdf Fixed over current shutdown 30 38 50 Vifb<Vifb-Vin@Isd
Isd_1k Programmable over current shutdown 1k 9 12 17 A Rifb=1k
treset Time to reset protection 50 500 See fig. 5
Min. pulse Min. pulse width (no WAIT state) 150 400 1200 µs Tj=25°C
WAIT WAIT function timer 0.4 1 2 ms See fig. 4 and 5
Reverse battery On state resistance
Tj=25°C 16 28
Rds(on) rev.
Tj=125°C 24 42 m Vcc-Vin=-14V,
Iout=10A
Static Electrical Characteristics
Tj=25°C, Vcc=14V (unless otherwise spe cified)
Symbol Parameter Min. Typ. Max. Units Test Conditions
Vcc op. Operating Voltage range 6 32 V
Icc off Supply leakage current 1.5 5 µA Vin=Vcc, Vcc-Vout=14V,
Vcc-Vifb=14V, Tj=25°C
Iin, on On state IN positive current 1.5 3 6 mA Vcc-Vin=14V, Tj=25°C
Vih High level Input threshold voltage (4) 5.4 6.3
Vil Low level Input threshold voltage (4) 4 4.9 5.8
Vhyst Input hysteresis Vih-Vil 0.2 0.4 1.5 V
Iout Drain to source leakage current 1.2 5 µA Vin=Vcc, Vcc-Vifb=0V,
Vcc-Vout=14V, Tj=25°C
On state resistance (5) Tj=25°C 10 15 20 Iout=10A, Vcc-Vin=14V
On state resistance (5) Tj=25°C 10 16 28 Iout=7A, Vcc-Vin=6V
Rds(on)
On state resistance (5) Tj=150°C 20 28.5 38 m Iout=10A, Vcc-Vin=14V
V clamp1 Vcc to Vout clamp voltage 1 36 39 Iout=50mA
V clamp2 Vcc to Vout clamp voltage 2 40 43 V Iout=10A, Tj=25°C
(4) Input thresholds are measured directly between the input pin and the tab. Any parasitic resistance in common between
the load current path and the input signal path can significantly affect the thresholds.
(5) Rdson is measured between the tab and the Out pin, 5mm away from the package.
Switching Electrical Characteristics
Vcc=14V, Resistive load=4, Tj=25°C
Symbol Parameter Min. Typ. Max. Units Test Conditions
tdon Turn on delay time to 10% Vcc 3 11 27
tr1 Rise time to Vcc-Vout=5V 1 4 10
tr2 Rise time to Vcc-Vout=0.1Vcc 2 8 20 µs
Eon Turn on energy 0.2 mJ
tdoff Turn off delay time 10 40 100
tf Fall time to Vout=10% of Vcc 2 8 20 µs
Eoff Turn off energy 0.1 mJ
See figure 2
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AUIR3315(S)
Current Sense Characteristics
Tj=-40°..150°C, Vcc=6..26V (unless otherwise specified)
Symbol Parameter Min. Typ. Max. Units Test Conditions
Ratio I Load/Iifb current ratio 2,400 2,800 3,200 Rfb=500, Iout=20A
Ratio_TC I Load/Iifb variation aver temperature -5 +5 % Tj=-40°C to 150°C
Offset Load current diagnostic offset -0.08 0 +0.09 A Iout=1A
trst Ifb response time (low signal) 1 µs 90% of the Iout step
Functional Block Diagram
All values are typical
1 ms
3mA
Charge
Pump Fast turn-off
Driver
reverse
battery
protection
IN IFB OUT
VCC
On/Off
Set
Reset
LatchQ
timer
43V
80
+
-
-
+
4.7V
Tj > 165°C
Iout > 38A
400µs
timer
-
+
35V
38V
43V
-
+
43V
Wait
Min. Pulse
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AUIR3315(S)
Lead Assignments
1- In
2- Ifb
3- Vcc (t ab)
4- Out
5- Out 1 2 4 5
D²Pak
3- Vcc
1 2 3 4 5
TO220
3- Vcc
1- In
2- Ifb
3- Vcc (t ab)
4- NC
5- Out
Vou
t
Vcc-Vin
tr-in
90%
10%
90%
10%
td o n tr1 td o ff tf
Vcc-5V
tr2
Vcc-Vin
Vih
Vil
Vhyst
Iin
Icc
Ifb
IN
Vcc
Out
IR3315
Ifb
Vcc-Vout
Vclamp1
Vclamp2
Iout
Isd
Figure 1 – Voltages and current definitions Figure 2 – Switching time definitions
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AUIR3315(S)
Figure 3 – Active clamp waveforms Figure 4 – Min. pulse and Wait function
Figure 5 – Protection Timing Diagrams
V
ou
t
ut
n
Io
Vi t clamp
Vcc-Vin
t min. pulse
Iout
t m in. pulse
Wait
Vcc
Vcc - V clamp
See A
pp
lication Notes to evaluate
p
ower dissi
p
ation
Vcc-Vin
t < t re set
Iout
Wait
T
j
t > t re set
Over-cu rrent shutdown
t < t r es e t
Wait
t > t res e t
Over-tem perature shutdown
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AUIR3315(S)
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All curves are typical characteristics. Operation in hatched areas is not recommended. Tj=25°C, Rifb=500ohm, Vcc=14V
(unless otherwise specified).
0
2
4
6
8
10
0 102030405 0
1
2
3
4
5
6
-50 0 50 100 150
Icc off, supply leakage current (µA)
Icc, supply current (mA)
0
Vcc-Vin, supply voltage (V) Tj, junction temperature (°C)
Figure 6 – Icc (mA) Vs Vcc-Vin (V) Figure 7 – Icc off (µA) Vs Tj (°C)
50%
100%
150%
200%
-50 0 50 100 150 0
1
2
3
4
5
6
-50 -25 0 25 50 75 100 125 150
Vifb-Vin@Isd
VIH
VIL
Rds(on), Drain-to-Source On Resistance
(Normalized)
Vih, Vil and Vifb-Vin@Isd (V)
Tj, junction temperature (°C) Tj, junction temperature (°C)
Figure 8 - Normalized Rds(on) (%) Vs Tj (°C) Figure 9 – Vih, Vil and Vifb-Vin@Isd (V) Vs Tj (°C)
AUIR3315(S)
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1
10
100
100 1000 10000
0
2
4
6
0 5 10 15 20 25 30
With calibration
Spec. Max.
Isd, over current shutdown (A)
Error (+/-A)
I load, load current (A) Rifb, feedback resistor ()
Figure 10 – Error (+/- A) Vs I load (A) Figure 11 – Ids (A) Vs Rifb ()
0
5
10
15
-50 0 50 100 150
60°C/W
35°C/W
1
10
100
10 100
Max. output current (A)
Max. output current (A)
Tamb., ambient temperature (°C) Inductance (µH)
Figure 12 – Max. Iout (A) Vs Tamb. (°C) Figure 13 – Max. Iout (A) Vs inductance (µH)
AUIR3315(S)
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Zth, transient thermal impedance (°C/W)
Time (s)
Figure 15 – Transient thermal impedance (°C/W)
Vs time (s)
1
10
100
1.E-01 1.E+00 1.E+01 1.E+02 1.E+03 0.01
0.1
1
10
100
1E-4 1E-3 1E-2 1E-1 1E+0 1E+1 1E+2
50°C/W free air
5°C/W
Tamb=25°C
Tamb=100°C
Ids, output current (A)
Protection response time (s)
Figure 14 – Ids (A) Vs over temperature protection
response time (s)
AUIR3315(S)
Case Outline – TO220 5 leads
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AUIR3315(S)
Case Outline - D2PAK - 5 Leads
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AUIR3315(S)
Tape & Reel - D2PAK – 5 leads
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AUIR3315(S)
Part Marking Information
Ordering Information
Standard Pack
Base Part Number Package Type Form Quantity
Complete Part Number
TO220 – 5Leads Tube 50 AUIR3315
Tube 50 AUIR3315S
Tape and reel left 800 AUIR3315STRL
AUIR3315 D2-Pak-5-Leads
Tape and reel right 800 AUIR3315STRR
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AUIR3315(S)
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.
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deceptive business practice. IR is not responsible or liable for any such statements.
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the body, or in other applications intended to support or sustain life, or in any other application in which the failure of the
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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
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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AUIR3315(S)
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Revision History
Revision Date Notes/Changes
A 01/09/2006 First release
B 22/01/2007 Pin asignment
C 14/01/2010 AU release
D 14/11/2010 Change description
