November, 14th 2010
Automotive grade
AUIR3315(S)
PROGRAMMABLE CURRENT SENSE HIGH SIDE SWITCH
Features
Load current feedback
Programmable over current shutdown
Active clamp
ESD protection
Input referenced to Vcc
Over temperature shutdown
Reverse battery protection
Lead-Free
Product Summary
Rds(on)
20 m max.
Vcc op.
6 to 32V
Current Ratio
2800
Prog. Ishutdown 3 to 30A
Vclamp
40V
Packages
Description
The AUIR3315(S) is a fully protected 4 terminals high 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 high. Other integrated protections (ESD, reverse
battery, active clamp) make the switch very rugged in
automotive environment.
TO-220
AUIR3315
D²Pak
Pin 4 and 5 fused
AUIR3315S
Typical Connection
Vcc
IN
Ifb
Current feeback
Input
On
Off
AUIR3315
Battery
Out
10k
Rifb
Logic
Ground
Power
Ground
Load
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AUIR3315(S)
Qualification Information
†
Qualification Level
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.
D2PAK-5L
MSL1, 260°C
(per IPC/JEDEC J-STD-020)
Not applicable
Moisture Sensitivity Level
TO220-5L
Class M4 (450V)
(per AEC-Q100-003)
Class H3A (4,500 V)
ESD
Human Body Model
(per AEC-Q100-002)
Class C4 (1000 V)
Charged Device Model
(per AEC-Q100-011)
Class II, Level A
IC Latch-Up Test
(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.
Machine Model
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AUIR3315(S)
Absolute Maximum Ratings
Absolute maximum ratings indicate sustained limits beyond which damage to the 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.
-16
-16
-16
-0.3
Max.
37
32
33
37
2.8
100
2
150
Units
V
Vcc-Vin
Maximum Vcc voltage
Vcc-Vin cont. Maximum continuous Vcc voltage
Vcc-Vfb
Maximum Ifb voltage
Vcc-Vout
Maximum output voltage
Ids cont.
Maximum body diode continuous current Rth=60°C/W (1)
Ids pulsed
Maximum body diode pulsed current (1)
Pd
Maximum power dissipation Rth=60°C/W
Tj max.
Max. storage & operating temperature junction temperature
Min Rfb
Minimum on the resistor on Ifb pin
Ifb max.
Max. Ifb current
(1) Limited by junction temperature. Pulsed is also limited by wiring
A
W
°C
k
mA
-40
0.3
-50
50
Thermal Characteristics
Symbol
Rth1
Rth2
Rth3
Parameter
Thermal resistance junction to ambient D²-Pak Std footprint
Thermal resistance junction to case D²-Pak
Thermal resistance junction to case TO-220
Typ.
60
1.6
1.6
Max.
Units
°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.
14
3.9
3.5
Units
A
k
ms
Hz
Continuous output current
Tambient=85°C, Rth=5°C/W, Tj=125°C
Tambient=85°C, Rth=60°C/W, Tj=125°C
Rifb
Recommended Ifb resistor (2)(3)
Pulse min.
Minimum turn-on pulse width
Fmax.
Maximum operating frequency
(2) If Rifb is too low, the device can be damaged.
(3) If Rifb is too high, the device may not switch on.
0.5
1
200
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AUIR3315(S)
Protection Characteristics
Tj=-40°..150°C, Vcc=6..26V, Rifb=500 to 5k
Symbol
Vifb-Vin@Isd
Tsd
OV
Isdf
Isd_1k
treset
Min. pulse
WAIT
Rds(on) rev.
Parameter
Over-current shutdown threshold
Over temperature threshold
Over voltage protection (not latched)
Fixed over current shutdown
Programmable over current shutdown 1k
Time to reset protection
Min. pulse width (no WAIT state)
WAIT function timer
Reverse battery On state resistance
Tj=25°C
Tj=125°C
Min.
3.8
Typ.
4.7
165
35
38
12
50
400
1
16
24
Max.
5.9
Units
V
°C
V
A
µs
ms
m
Test Conditions
See fig. 5
Vifb<Vifb-Vin@Isd
Rifb=1k
See fig. 5
Tj=25°C
See fig. 4 and 5
Vcc-Vin=-14V,
Iout=10A
33
30
9
150
0.4
39
50
17
500
1200
2
28
42
Static Electrical Characteristics
Tj=25°C, Vcc=14V (unless otherwise specified)
Symbol
Vcc op.
Icc off
Iin, on
Vih
Vil
Vhyst
Iout
Parameter
Operating Voltage range
Supply leakage current
On state IN positive current
High level Input threshold voltage (4)
Low level Input threshold voltage (4)
Input hysteresis Vih-Vil
Drain to source leakage current
Min.
6
Typ.
Max.
32
5
6
6.3
5.8
1.5
5
Units
V
µA
mA
V
µA
Test Conditions
Vin=Vcc, Vcc-Vout=14V,
Vcc-Vifb=14V, Tj=25°C
Vcc-Vin=14V, Tj=25°C
1.5
3
5.4
4.9
0.4
1.2
1.5
4
0.2
Vin=Vcc, Vcc-Vifb=0V,
Vcc-Vout=14V, Tj=25°C
Rds(on)
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
m
Iout=10A, Vcc-Vin=14V
On state resistance (5) Tj=150°C
20
28.5
38
Iout=50mA
V clamp1
Vcc to Vout clamp voltage 1
36
39
V
40
43
Iout=10A, Tj=25°C
V clamp2
Vcc to Vout clamp voltage 2
(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
tdon
tr1
tr2
Eon
tdoff
tf
Eoff
Parameter
Turn on delay time to 10% Vcc
Rise time to Vcc-Vout=5V
Rise time to Vcc-Vout=0.1Vcc
Turn on energy
Turn off delay time
Fall time to Vout=10% of Vcc
Turn off energy
Min.
3
1
2
Typ.
11
4
8
0.2
40
8
0.1
Max.
27
10
20
Units
µs
mJ
µs
mJ
Test Conditions
See figure 2
10
2
100
20
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AUIR3315(S)
Current Sense Characteristics
Tj=-40°..150°C, Vcc=6..26V (unless otherwise specified)
Symbol
Ratio
Ratio_TC
Offset
trst
Parameter
I Load/Iifb current ratio
I Load/Iifb variation aver temperature
Load current diagnostic offset
Ifb response time (low signal)
Min.
2,400
-5
-0.08
Typ.
2,800
Max.
3,200
+5
+0.09
Units
Test Conditions
Rfb=500
, Iout=20A
Tj=-40°C to 150°C
Iout=1A
90% of the Iout step
0
1
%
A
µs
Functional Block Diagram
All values are typical
VCC
Charge
Pump
Driver
On/Off
Fast turn-off
38V
43V
43V
3mA
+
-
+
-
Reset
Set
35V
Q
43V
Latch
Wait
timer
1 ms
4.7V
timer
400µs
80
-
+
Iout > 38A
Tj > 165°C
Min. Pulse
-
+
reverse
battery
protection
IN
IFB OUT
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