BTS50040-2SFA Data Sheet (1.6 MB, EN)

H i g h C u r r e n t P R O F E T TM
BTS50040-2SFA
Smart High-Side Power Switch
Dual Channel, 2x 4mΩ
Datasheet
High Current PROFETTM
V1.2, 2012-12-01
Automotive
Smart High-Side Power Switch
BTS50040-2SFA
1
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2
2.1
2.2
Block Diagram and Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3
3.1
3.2
Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Pin Assignment BTS50040-2SFA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Pin Definitions and Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4
4.1
4.2
4.3
4.4
General Product Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Functional Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Thermal Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5
5.1
5.1.1
5.1.2
5.1.3
5.1.4
5.2
5.3
5.3.1
5.3.2
5.3.3
5.3.4
5.3.5
5.3.6
5.4
5.4.1
5.4.2
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Stages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output On-State Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output Inductive Clamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inverse Operation Capability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Protection Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Infineon® INTELLIGENT LATCH - fault acknowledge and latch reset . . . . . . . . . . . . . . . . . . . . . .
Short Circuit and Overtemperature Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reverse Polarity Protection - ReverSaveTM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Undervoltage shutdown and restart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loss of Ground Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loss of Load Protection, Loss of VS Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagnostic Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sense Enable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagnosis during ON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6
6.1
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Electrical Characteristics Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
7
7.1
7.2
Application schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Hints for PCB layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Further Application Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
8
Package Outlines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
9
Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Datasheet
High Current PROFETTM
2
12
12
12
13
13
15
15
16
16
17
18
18
18
18
19
19
20
V1.2, 2012-12-01
Smart High-Side Power Switch
Dual Channel, 2x 4mΩ
1
BTS50040-2SFA
Overview
Features
•
•
•
•
•
•
•
•
•
•
3.3 and 5V compatible, ground referenced CMOS compatible inputs
for each channel
Optimized electromagnetic compatibility (EMC)
Very low standby current
Slew rate configurable via external circuitry or signal
Secure load turn-off while device ground disconnected
ReverSaveTM - Reverse battery protection without external
components
Inverse load current capability
Infineon® INTELLIGENT LATCH
Green Product (RoHS compliant) and halogen free package
AEC qualified
Extended Supply Voltage Range for Operation
Logic Supply Voltage
Minimum power stage over-voltage protection
Typical on-state resistance at Tj = 25°C (channel 0, 1)
Maximum on-state resistance at Tj = 150°C (channel 0, 1)
Typical nominal load current per channel, both channel active
Minimum short circuit shutdown threshold at Tj = -40°C
PG-DSO-36-44
VS(ext)
VDD
VDS(CL))
RDS(ON)
RDS(ON)
IL(nom)
IL(SC)
6 .. 28V
4.5 .. 5.5 V
40 V
4.0 mΩ
8.2 mΩ
11 A
130 A
Maximum stand-by current for whole device with load for Tj ≤ 85°C IS(OFF)
12 µA
Description
The BTS50040-2SFA is a dual channel high-side power switch in PG-DSO-36-44 package providing embedded
protective functions including ReverSaveTM and Infineon® INTELLIGENT LATCH. It is most suitable for loads with
high inrush current, such as glow plugs, PTC heaters, or lamps.
The power transistors are built by a dual N-channel vertical power MOSFET with charge pump. The design is
based on Smart power chip by chip technology.
The BTS50040-2SFA has ground referenced CMOS compatible inputs.
ReverSaveTM is a protection feature that causes the power transistor to switch on in case of reverse polarity. As
a result, the power dissipation is reduced.
Infineon® INTELLIGENT LATCH ensures a latched switch-off and reporting in case of fault condition.
Type
Package
Marking
BTS50040-2SFA
PG-DSO-36-44
S50040-2A
Datasheet
High Current PROFETTM
3
V1.2, 2012-12-01
Smart High-Side Power Switch
BTS50040-2SFA
Overview
Power Stage
•
Four different slew rates selectable via pin SRS0 and SRS1
Protective Functions
•
•
•
•
•
•
•
•
•
•
Short circuit protection with latch
Thermal shutdown with latch
Infineon® INTELLIGENT LATCH - reset able latch resulting from protective switch-off
ReverSaveTM - Reverse battery protection by self turn on of power MOSFET
Inverse load current capability - Inverse operation function
Stable behavior at under voltage on VS or Vdd
Over voltage protection (including load dump)
Loss of ground protection
Loss of Vs protection (with external diode for charged inductive loads)
Electrostatic discharge protection (ESD)
Diagnostic Functions
•
•
•
•
•
Multiplexed proportional load current sense signal (IS)
Seperate enable function for current sense signal of each channel via pin SEN0 and SEN1
Provides analog sense signal of load current in normal operation mode
Provides low signal in case of over temperature and short circuit to ground
Open load detection in ON-state by load current sense
Applications
•
•
•
•
µC compatible high-side power switch with diagnostic feedback for 12 V system grounded loads in automotive
applications
All types of resistive, inductive and capacitive loads
Most suitable for loads with high inrush currents, such as glow plugs, PTC heaters, or lamps
Replaces electromechanical relays, fuses and discrete circuits
Datasheet
High Current PROFETTM
4
V1.2, 2012-12-01
Smart High-Side Power Switch
BTS50040-2SFA
Block Diagram and Terms
2
Block Diagram and Terms
2.1
Block Diagram
control chip
Vdd
ESD protection
Logic
supply
IN1
IN0
SRS0
SRS1
Vs
over temperature
SEN0
SEN1
T
VON(CL)
gate control
&
charge pump
over
overcurrent
current
switch-off
switch-off
driver
logic
IS
power chip
analog supply
T
VOUT(CL)
0
1
OUT1
OUT0
channel 1
channel 0
load current sense
GND
Figure 1
Block Diagram
2.2
Terms
Overview.emf
IS
VS
Idd
Vdd
ISRS0
VSRS0
ISRS1
VSRS1
IIN0
VIN0
IIN1
VIN1
ISEN0
VSEN0 ISEN1
Vs
Vdd
SRS0
SRS1
IN0
OUT0
IN1
OUT1
VDS0
I L0
VDS1
I L1
VOUT 0
VOUT 1
SEN0
IS
IIS
SEN1
VIS
VSEN1
RIS
GND
IGND
Terms.emf
Figure 2
Terms
Datasheet
High Current PROFETTM
5
V1.2, 2012-12-01
Smart High-Side Power Switch
BTS50040-2SFA
Pin Configuration
3
Pin Configuration
3.1
Pin Assignment BTS50040-2SFA
GND
GNDR
IN0
IN1
IS
NC
GND
Vs
Vs
Vs
OUT1
OUT1
OUT1
OUT1
OUT1
Vs
Vs
Vs
1
36
2
35
3
34
4
33
5
32
6
31
7
30
8
29
9
28
10
27
11
26
12
25
13
24
14
23
15
22
16
21
17
20
18
19
NC
SEN1
SEN0
SRS0
SRS1
Vdd
GND
Vs
Vs
Vs
OUT0
OUT0
OUT0
OUT0
OUT0
Vs
Vs
Vs
Pin_Description.vsd
Figure 3
Pin Configuration
3.2
Pin Definitions and Functions
Pin
Symbol I/O Function
GND
-
Ground; Ground connection for control chip1)
2
GNDR
-
Ground reference; Needs to be connected to GND.
3
IN0
I
Input 0; activates channel 0. Has an internal pull down resistor.
4
IN1
I
Input 1; activates channel 1. Has an internal pull down resistor.
1, 7, 30
5
IS
O Sense Output; analog sense current signal proportional to IL0 or IL1.
6, 36
NC
-
Not connected; For handling of NC pins, please see Chapter 7.1.
8..10, 16..21, 27..29
Vs
-
Supply voltage; Positive power supply for power outputs1)
11, 12, 13, 14, 15
OUT1
O Output of channel 1; power output 11)
22, 23, 24, 25, 26
OUT0
O Output of channel 0; power output 01)
31
Vdd
-
Logic supply (5V)
32
SRS1
I
Slew rate selector pin 0. See section “Timings” on Page 22 for seetings.
33
SRS0
I
Slew rate selector pin 1. See section “Timings” on Page 22 for seetings.
34
SEN0
I
Sense Enable for channel 0. See Table 1.
35
SEN1
I
Sense Enable for channel 1. See Table 1.
1) All GND pins have to be connected externally. All Vs pins have to be connected externally. All OUT pins of a channel have
to be connected externally.
Datasheet
High Current PROFETTM
6
V1.2, 2012-12-01
Smart High-Side Power Switch
BTS50040-2SFA
General Product Characteristics
4
General Product Characteristics
4.1
Absolute Maximum Ratings
Operation outside the parameters listed here may cause permanent damage to the device. Exposure to maximum
rating conditions for extended periods may affect device reliability
Absolute Maximum Ratings 1)
Tj = -40 °C to +150 °C (unless otherwise specified)
Pos.
Parameter
Symbol
Limit Values
Min.
Unit
Conditions
Max.
Supply Voltage
VS
Vdd
-VS(rev)
4.1.1
Supply voltage
4.1.2
Logic supply voltage
4.1.3
Reverse polarity voltage
4.1.4
Supply voltage for short circuit protection Vbat(SC)
(single pulse)
0
28
V
-
-0.3
5.5
V
-
0
16
V
2)
0
28
V
Tj(0) = 25 °C
t ≤ 2 min
3)
RECU = 20 mΩ
l = 0 or 5 m
RCable = 6 mΩ/m
LCable = 1 µH/m
RI = 2 Ω 4),
td =400 ms
4.1.5
Supply Voltage for Load Dump
protection
VS(LD)
-
40
V
4.1.6
Current through ground pin
-
25
mA
t ≤ 2 min
4.1.7
Current through Vdd pin
IGND
Idd
-
5
mA
t ≤ 2 min
-
Input Pins
4.1.8
Voltage at digital input pins IN0, IN1,
SRS0, SRS1, SEN0, SEN1
VDIO
-0.3
5.5
V
4.1.9
Current through digital input pins IN0,
IN1, SRS0, SRS1, SEN0, SEN1
IDIO
-0.75
-2
0.75
2
mA
-0.3
5.5
V
-
-
20
mA
-
t ≤ 2 min
Output Pins
4.1.10
Voltage at sense pin
4.1.11
Current through sense pin IS
VIS
IIS
Power Stages
4.1.12
Load current 5)
| IL |
-
IL(SC)
A
-
4.1.13
Inductive load switch-off energy (single
pulse)
EAS
-
411
mJ
4.1.14
Inductive load switch-off energy
(repetitive pulses)
EAR
-
64
mJ
VS = 13.5 V6),
IL(0) = 20 A,
Tj(0) ≤ 150 °C
VS = 13.5V6),
IL(0) = 20A,
Tj(0) ≤ 105 °C
Tj
ΔT j
-40
150
°C
-
-
60
K
-
Tstg
-55
150
°C
-
Temperatures
4.1.15
Junction temperature
4.1.16
Dynamic temperature increase while
switching
4.1.17
Storage temperature
ESD Susceptibility
Datasheet
High Current PROFETTM
7
V1.2, 2012-12-01
Smart High-Side Power Switch
BTS50040-2SFA
General Product Characteristics
Absolute Maximum Ratings (cont’d)1)
Tj = -40 °C to +150 °C (unless otherwise specified)
Pos.
Parameter
Symbol
Limit Values
Min.
4.1.18
4.1.19
ESD susceptibility HBM
all pins vs. GND
Vs pins versus OUT
VESD1
ESD susceptibility CDM
all pins to GND
corner pins
VESD2
Unit
Conditions
kV
7)
V
8)
Max.
-2
-4
HBM
2
4
-500
-750
CDM
500
750
1) Not subject to production test, specified by design.
2) At negative battery voltages (VS < 0V) logic pins can reach negative potentials (VS ≤ Vpin ≤ GND). In this case, too high
currents through affected pins have to be avoided by means of series resistors.
3) Setup in accordance with AEC Q100-012 and AEC Q101-006
4) VS(LD) is setup without the DUT connected to the generator per ISO 7637-1 and DIN 40839. RI is the internal resistance of
the Load Dump pulse generator
5) Short circuit shutdown is a protection feature. Protection features are not designed for continuous repetitive operation.
6) See also Chapter 5.1.3. Resuls for EAR from simulation of temperature swing.
7) ESD resistivity, HBM according to ANSI/ESDA/JEDEC JS-001.
8) ESD susceptibility, Charged Device Model “CDM” ESDA STM5.3.1 or ANSI/ESD S.5.3.1
VS = 13.5 V
1000
EA
100
mJ
10
1
A
10
E_AR (Tj(0) = 105°C)
E_AS (Tj(0) = 150°C)
Figure 4
100
IL
Maximum energy dissipation1)
Note: Clamping overrides all protection functionalities. In order to avoid device destruction resulting from inductive
switch-off or over voltage the device has to be operated within the maximum ratings.
Note: Stresses above the ones listed here may cause permanent damage to the device. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.
Note: Integrated protection functions are designed to prevent IC destruction under fault conditions described in the
data sheet. Fault conditions are considered as “outside” normal operating range. Protection functions are
not designed for continuous repetitive operation.
1) Not subject to production test, specified by design. Resuls for EAR from simulation of temperature swing.
Datasheet
High Current PROFETTM
8
V1.2, 2012-12-01
Smart High-Side Power Switch
BTS50040-2SFA
General Product Characteristics
4.2
Pos.
Functional Range
Parameter
Symbol
Limit Values
Min.
Unit
Conditions
Max.
Supply Voltage
4.2.1
Nominal Supply Voltage Range for VS(NOM)
Operation
4.2.2
Extended Supply Voltage Range
for Operation
4.2.3
9
16
V
-
VS(EXT)1)
6
28
V
2)
Logic Supply Voltage Range for
Operation
Vdd(NOM)
4.5
5.5
V
-
4.2.4
Load current range for sense
functionality 1)
IL(IS)
2
40
A
IIS - IIS(LH) > 30 µA,
IIS < IIS(lim),
VIS < VIS(lim),
VS = VS(NOM),
VINx = VSENx = 5 V,
4.2.5
Junction temperature
Tj
-40
150
°C
-
Vdd = Vdd(NOM)
1) Not subject to production test, specified by design
2) In extended supply voltage range, the device is functional but electrical parameters are not specified.
Note: Within the functional or operating range, the IC operates as described in the circuit description. The electrical
characteristics are specified within the conditions given in the Electrical Characteristics table.
4.3
Pos.
Thermal Resistance
Parameter
Symbol
Limit Values
Min.
4.3.1
4.3.2
Junction to Soldering point
Rthjsp1)
one channel active
all channels active
–
–
Junction to Ambient
RthJA1)
one channel active
all channels active
–
–
Typ.
–
–
27
26
Unit
Conditions
K/W
junction to Vs pins
(8, 9, 10, 16, 17, 18,
19,20,21,27,28, 29)
K/W
2)
Max.
16
15
–
–
Ta = 105 °C
Ploss = 1W per
channel
cooling area I
1) Not subject to production test, specified by design
2) Specified RthJA values is according to Jedec JESD51-2,-5,-7 at natural convection on FR4 2s2p board; The product
(chip+package) was simulated on a 76.4 x 114.3 x 1.5 mm board with 2 inner copper layers (2 x 70 µm Cu, 2 x 35 µm Cu).
Where applicable, a thermal via array under the package contacted the first inner copper layer.
Figure 5 is showing the typical thermal impedance of BTS50040-2SFA mounted according to Jedec JESD51-2,5,-7 at natural convection on FR4 1s and 2s2p board. The product (chip + package) was simulated on a 76,4 x
114,3 x 1,5 mm board with 2 inner copper layers (2x 70µm Cu, 2 x 35µm Cu). Where applicable, a thermal via
array under the exposed pad contacted the first inner copper layer. The PCB layer structure is shown in Figure 6.
The PCB top view is shown in Figure 7.
Datasheet
High Current PROFETTM
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V1.2, 2012-12-01
Smart High-Side Power Switch
BTS50040-2SFA
General Product Characteristics
100
1s + area I
1s + 600mm²
2s2p + area I
ZthJA [K/W]
10
1
0,1
0,001 0,01
Figure 5
0,1
1
10
tP [sec.]
100
1000
Typical transient thermal impedance Zth(JA) = f(tP) for different cooling areas
2s2p PCB
1s PCB
1.5mm
Vbat
1.5mm
70µm
GND
70µm
0.3mm
Figure 6
35µm
PCB_cross.emf
Cross section and front view of 1s and 2s2p PCB used for ZthJA simulation
Datasheet
High Current PROFETTM
10
V1.2, 2012-12-01
Smart High-Side Power Switch
BTS50040-2SFA
General Product Characteristics
PCB with 600mm² cooling area
PCB with cooling area I
detail on cooling area I
Figure 7
Top view of PCB with different cooling areas used for ZthJA simulation
4.4
Package
Pos.
Parameter
Value
Test Conditions
4.4.1
Jedec humidity category acc. J-STD-020-D
MSL3
-
4.4.2
Jedec classification temperature acc. J-STD-020-D 260°C
-
Datasheet
High Current PROFETTM
11
V1.2, 2012-12-01
Smart High-Side Power Switch
BTS50040-2SFA
Functional Description
5
Functional Description
5.1
Power Stages
The BTS50040-2SFA is a high side switch with two independent outputs OUT0 and OUT1, made out of a dual Nchannel power MOSFET with charge pump. For each channel, the BTS50040-2SFA provides sophisticated
protection and diagnostic features.
Table 1
Truth Table for Power Stages
Operation Mode
Input (INx)
Level
Output Level
(OUTx)
Diagnostic Output (IS)
SENx = H
SENx = L
~VS
IIS = IL / kILIS
Z
Inverse Operation (-IL)
>VS
Z
Short Circuit to VS
VS
~VS
< IL / kILIS
Normal Operation (ON)
H
Open Load
Z
Protective switch-off resulting from
Short Circuit to GND or Over
Temperature 1)
X
Z
Z
Z
Normal Operation (OFF)
L
Z
Z
Z
>VS
Z
Z
Z
Inverse Operation (-IL)
Short Circuit to VS
Open Load
L = Low Level, H = High Level, X = don’t care, Z = high impedance, only leakage provided, potential depends on external
circuit
1) Output state and fault reporting remains latched until reset signal (SEN0=SEN1=High).
5.1.1
Output On-State Resistance
The on-state resistance RDS(ON) of each channel depends on the supply voltage VS and the junction temperature
Tj. Figure 8 shows these dependencies for the typical on-state resistance. The on-state resistance in reverse
polarity mode is described in Chapter 5.3.3.
Datasheet
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V1.2, 2012-12-01
Smart High-Side Power Switch
BTS50040-2SFA
Functional Description
10
10
RDS(ON)
RDS(ON)
VS = 13.5 V
7,5
m:
Tj = 25°C
7,5
m:
typ.
typ.
5
5
2,5
2,5
0
-40
0
40
80
0
120
160
°C
Tj
Figure 8
Typical On-State Resistance
5.1.2
Output Timing
0
4
8
V
12 16 20 24
VS
28
The power stage is designed for high side configuration (Figure 10).
The BTS50040-2SFA offers 4 pre-defined switching behavior for the power stage. Defined slew rates as well as
edge shaping support PWM’ing of the load while achieving lowest EMC emission at minimum switching losses.
The different switching speeds can be selected by using slew rate selector pins SRS0 and SRS1. Please look at
chapter Chapter 6.1 Electrical Characteristics Table parameter (dV/ dt)ON and -(dV/ dt)OFF on page 23 on
setting up SRS0 and SRS1.
VIN
VOUT
tON
tr
tOFF
tf
t
90%
50%
30%
dV/dtON
dV/dtOFF
10%
t
Figure 9
Switching a Load (resistive)
5.1.3
Output Inductive Clamp
SwitchOn _power .emf
When switching off inductive loads, the output voltage VOUT drops below ground potential due to the inductive
properties of the load ( -diL/dt = -vL/L ; -VOUT ≅ -VL ).
To prevent destruction of the device, there is a voltage clamp mechanism implemented that keeps the voltage drop
across the device at a certain level. At nominal battery voltage the output is clamped to VOUT(CL). At over voltages
Datasheet
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Smart High-Side Power Switch
BTS50040-2SFA
Functional Description
the output is clamped to VDS(CL). See Figure 10 and Figure 11 for details. The maximum allowed load inductance
is limited.
Vs
Vbat
GND
V DS(CL)
OUT
power
chip
iL
V OUT(CL)
LOAD
charge pump
control
chip
OutputClamp .emf
Figure 10
Output Clamp
VOUT
VS
ON
OFF
V OUT
VDS(CL)
t
VS
VDS(CL)
VOUT (CL)
VS
VOUT (CL)
IL
t
Figure 11
InductiveLoad .emf
Switching an Inductance
Maximum Load Inductance
While de-energizing inductive loads, energy has to be dissipated in the BTS50040-2SFA. This energy can be
calculated by the following equation:
– V OUT ( CL )
⎛
RL ⋅ IL ⎞
L
- ⋅ ln ⎜ 1 + ------------------------E A = ( V S + V OUT ( CL ) ) ⋅ -----------------------------⎟ + I L ⋅ ------RL
R
V
⎝
L
OUT(CL) ⎠
In the event of de-energizing very low ohmic inductances (RL≈0) the following, simplified equation can be used:
V DS(CL)
2
1
E A = --- LI L ⋅ ---------------------------------2
V DS(CL) – V S
The energy, which is converted into heat, is limited by the thermal design of the component. See Figure 4 for the
maximum allowed energy dissipation.
Datasheet
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V1.2, 2012-12-01
Smart High-Side Power Switch
BTS50040-2SFA
Functional Description
5.1.4
Inverse Operation Capability
The BTS50040-2SFA can be operated in inverse load current condition (VOUT > VS). Inverse load current is a
negative load current, e.g. caused by a load operating as a generator. The device does not block the current flow
during inverse mode.
In ON condition, a voltage drop across the activated channel of -VON(INV) = -IL x RDS(ON) can be observed. As long
as the inverse current does not exceed |-IL|<|-IL(inv)|, the logic will operate normally.
In OFF condition, a voltage drop across the inactive channel of -VOFF(INV) = f(-IL) can be observed. Also the
accuracy of the sense function of the non-inverted channel may not be within specified range under this condition.
+V S
-V ON(inv)
logic
control
chip
Vs
power
chip
Vbat
OUT
GND
-IL
+
Inverse_capability .emf
Figure 12
Inverse current capability
Note: Activation of any protection mechanism will not block the current flow. Over temperature detection and
current sense is not functional during inverse mode.
5.2
Input Circuit
Figure 13 shows the input circuit of the BTS50040-2SFA. The circuitry is equivalent for all input pins of the device
(IN0, IN1, SEN0, SEN1, SRS0, SRS1). The input resistor to ground ensures that the input signal is low in case of
open input pin. The z-diode protects the input circuit against ESD pulses. The function which is linked to each pin
can be found in Chapter 3.2 “Pin Definitions and Functions”.
IN
RIN
GND
Input .emf
Figure 13
Input Circuit
Datasheet
High Current PROFETTM
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Smart High-Side Power Switch
BTS50040-2SFA
Functional Description
5.3
Protection Functions
The BTS50040-2SFA provides embedded protective functions. Integrated protection functions are designed to
prevent IC destruction under fault conditions described in the data sheet. Fault conditions are considered as
“outside” normal operating range. Protection functions are neither designed for continuous nor repetitive
operation.
5.3.1
Infineon® INTELLIGENT LATCH - fault acknowledge and latch reset
The BTS50040-2SFA provides Infineon® INTELLIGENT LATCH to avoid permanent resetting of a protective,
latched switch off in PWM applications, in case of overtemperature or short circuit. To reset a latched protective
switch off the fault has to be acknowledged by a HIGH signal at both sense enable pins SEN0 and SEN1 (RESET
= (SEN0&SEN1=HIGH)), or by an undervoltage reset of the internal logic supply.
Please refer to Figure 14 and Figure 15 for details. To avoid interferrence of reset signal and protective switchoff, either IN0 and IN1 must be low during reset signal, or reset signal must be shorter than 50µs
((SEN0&SEN1=HIGH) only for t< 50µs).
Vs
IN0
&
SEN0
&
SEN1
logic supply
reset
≥1
INTELLIGENT LATCH
≥1
S Q
IL>IL(SC)
Τj>Tjt
OUT1
OUT0
R Q
Channel 1
Channel 0
driver-logic.emf
Figure 14
Driver logic
Datasheet
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Smart High-Side Power Switch
BTS50040-2SFA
Functional Description
INx
t
SEN0
+
SEN1
2
1
0
over temp. /
short circuit
t
t
VOUTx
t
IS
IIS
ILx/kILISx
IIS(LL)
t
t
Vdd
latch
t
latch
reset
reset
fault _acknowledge .emf
®
Figure 15
Infineon INTELLIGENT LATCH - fault acknowledge and latch reset
5.3.2
Short Circuit and Overtemperature Protection
The internal logic permanently monitors the load current IL and the junction temperature Tj. In the event the short
circuit shutdown threshold (IL(SC)) or overtemperature shutdown threshold (Tjt) is exceeded, the device will switch
off the affected channel immediately. Any protective switch off latches the affected output. Please refer to
Figure 16 for details. A RESET signal will override temperature shutdown hysteresis even if Tj > Tjt - ΔTj. See also
Chapter 5.3.3.
short circuit
overtemperature
VIN
VIN
t
SEN0 2
+
SEN1 1
0
IL
IL(SC) t
latch
reset reset
latch latch
t
SEN0 2
+
SEN1 1
0
Tj
Tjt
t
latch
t
t
reset reset
latch latch
fault_detect .emf
Figure 16
Shutdown by short circuit current and overtemperature detection
Note: In case of a short circuit between OUT and ground, an impedance between Vbat and VS pin of the device
may cause the device’s supply voltage to drop below VS(EXT) before short circuit shutdown threshold is
reached. In that case, short circuit or overtemperature protection may not be functional.
Datasheet
High Current PROFETTM
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V1.2, 2012-12-01
Smart High-Side Power Switch
BTS50040-2SFA
Functional Description
5.3.3
Reverse Polarity Protection - ReverSaveTM
The device can not block a current flow in reverse battery condition. In order to minimize power dissipation, the
device offers ReverSaveTM functionality. Under reverse polarity condition, the output stage will be switched on,
provided a sufficient voltage -VS is applied between pin Vs and pin GND. Please refer to Figure 17 for details.
control chip
-V S
Vs
power chip
-VON(rev)
-V bat
GND
LOAD
OUT
-IL
Reverse.emf
Figure 17
Reverse battery protection
Use the following formula for estimation of overall power dissipation Pdiss(rev) in reverse polarity mode.
P
2
diss(rev)
≈ R ON(rev) ⋅ I L
Note: No protection mechanism is active during reverse polarity. The control chip is not functional. Potentials of
logic pins can become negative. Affected pins have to be protected by means of series resistors.
5.3.4
Undervoltage shutdown and restart
The BTS50040-2SFA is supplied by two supply voltages VS and Vdd. The VS supply line is used by the driver
circuitry and the power stage.
There is a power-on reset function implemented for the internal logic supply. After start-up of the logic power
supply, all latches are reset.
If VS is below VS(NOM), the internal logic supply is switched over to Vdd line. If Vdd is close to Vdd(RESET), the switchover may activate logic supply reset of the INTELLIGENT LATCH function. See Figure 1 and Figure 14. A
capacitor between Vdd and GND is recommended for filtering purpose as shown in Figure 22.
Stand-by mode is entered as soon as VS voltage is applied, but no Vdd supply voltage is applied. If the Vdd voltage
is applied too, but no channel is switched on, the device is in idle mode. With applied VS and Vdd voltages the
channels can be activated via the according input pins. The device is in normal operation mode.
If Vdd is applied before VS is available, a reset via SEN0=SEN1=HIGH may be necessary for enabling the power
stages.
5.3.5
Loss of Ground Protection
In case of complete loss of the device ground connections, but load still being connected to ground, the
BTS50040-2SFA securely changes to or remains in OFF state.
5.3.6
Loss of Load Protection, Loss of VS Protection
In case of loss of load with charged primary inductances the maximum supply voltage has to be limited. It is
recommended to use a Z-diode, a varistor (VZa < 42 V) or VS clamping power switches with connected loads in
parallel.
Datasheet
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Smart High-Side Power Switch
BTS50040-2SFA
Functional Description
In case of loss of VS connection with charged inductive loads, a current path with load current capability has to be
provided, to demagnetize the charged inductances. It is recommended to use a diode, a Z-diode or a varistor
(VZb < 16 V, VZL+VD < 16 V, ).
For higher clamp voltages currents through all pins have to be limited according to the maximum ratings. Please
refer to Figure 18 for details.
Vs
power
chip
logic
VZa
logic
VZb
control
chip
power
chip
LOAD
control
chip
Vs
OUT
GND
GND
VZL
Vs _disconnect .emf
Vs_load _disconnect .emf
Figure 18
VD
LOAD
OUT
Loss of VS
In case of complete loss of VS the BTS50040-2SFA remains in OFF state.
5.4
Diagnostic Functions
For diagnosis purposes, the BTS50040-2SFA provides an analog load current sense signal at the pin IS.
5.4.1
Sense Enable
Providing a low signal at the SENx pin will disable the reporting of channel x. The pin IS will be set to tri-state mode
when both SEN pins are low or high. A HIGH signal at SEN0 and SEN1 at the same time resets a preceding
latched output condition. Please see Figure 15, Figure 19 and Table 1 for details.
In order to achieve minimum standby current, SEN0 and SEN1 have to be low level.
Vs
IL/kILIS
SEN1
0
1
Vdd
SEN0
0
1
IS
Ch 0
OUT1
OUT0
current-sense.emf
Figure 19
Current sense
Datasheet
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Smart High-Side Power Switch
BTS50040-2SFA
Functional Description
Table 2
Truth Table for Sense Enable
SEN0
SEN1
IS
Comment
H
H
fault latch reset
L
H
H
L
L
L
IIS(LL)
IIS=IL1/kILIS
IIS=IL0/kILIS
IIS(LL)
channel 1
channel 0
-
L = Low Level, H = High Level
5.4.2
Diagnosis during ON
During normal operation, an enabled IS pin provides a sense current, which is proportional to the load current as
long as VIS < VS - 5 V and as long as IIS*RIS<VIS(lim). The ratio of the output current is defined as kILIS=IL/IIS. During
switch-on sense current is provided after a sense settling time tsIS(ON). During inverse operation and switch-off no
current is provided.
The output sense current is limited to IIS,lim. Please refer to Figure 20 for details.
normal operation
VINx
VSENx
t
VONx
t
ILx
IL(1)
IISx
IIS(1)
0.9*I IS(1)
IIS(LL)
tsIS(ON)
IL(2)
IIS(2)
t
IL(1)
IIS(lim)
0.1*IIS(1)
tsIS(LC)
tsIS(OFF )
t
IIS(1)
tsIS(SEN)
0.1*IIS(1)
t
tdIS(SEN)
SwitchON _sense.emf
Figure 20
Timing of Diagnosis Signal in ON-state
The accuracy of the provided current sense ratio (kILIS = IL / IIS) depends on the load current. Please refer to
Figure 21 for details. A typical resistor RIS of 1 kΩ is recommended (see also Chapter 5.3.5).
Datasheet
High Current PROFETTM
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V1.2, 2012-12-01
Smart High-Side Power Switch
BTS50040-2SFA
Functional Description
40000
kILIS
30000
20000
max.
typ.
10000
min.
0
0
10
20
30
A
40
IL
Figure 21
Current sense ratio kILIS1)
1) The curves show the behavior based on characterization data. The marked points are described in this Datasheet in
Chapter 6.1 (Position 6.1.24).
Datasheet
High Current PROFETTM
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Smart High-Side Power Switch
BTS50040-2SFA
Electrical characteristics
6
Electrical characteristics
6.1
Electrical Characteristics Table
Note: Characteristics show the deviation of parameters at the given supply voltage and junction temperature.
Typical values show the typical parameters expected from manufacturing.
VS = 9 V to 16 V, Vdd = 4.5 V to 5.5 V, Tj = -40 °C to +150 °C (unless otherwise specified)
typical values: VS = 13.5 V, Tj = 25 °C, Vdd = 5 V
Pos.
Parameter
Symbol
Limit Values
Min.
Typ.
Unit
Conditions
mΩ
VIN=5V, IL=+/-10A
A
TA = 85 °C
Tj ≤ 150 °C
VIN0 = VIN1 = 0V;
VOUT=0V
Max.
Output characteristics
6.1.1
On-state resistance per channel
Tj=25°C1)
Tj=150°C
VS=6V, Tj=25°C1)
VS=6V, Tj=150°C
6.1.2
6.1.3
Nominal load current per
channel1)2)
RDS(ON)
IL(nom)
6.1.5
6.1.6
6.1.7
4.0
6.5
7.9
10
8.2
16
-
11
-
-
2
2
7
5
5
45
Output leakage current per channel IL(OFF)
µA
Tj = -40 °C, Tj = 25 °C1)
Tj ≤ 85 °C 1)
Tj = 150 °C
6.1.4
-
Output clamp during switch-off
IL = 40 mA
IL = 10 A 1)
-VOUT(CL)
Output clamp during over voltage
IL = 40 mA
IL = 20 A 1)
VDS(CL)
Inverse operation output voltage
drop
Tj=25°C1)
Tj=150°C
-VOFF(inv)
Inverse current capability1)
-IL(inv)
Turn-on time to 90%VS
SRS0 = 1, SRS1 = 1
SRS0 = 1, SRS1 = 0
SRS0 = 0, SRS1 = 1
SRS0 = 0, SRS1 = 0
tON
Turn-off time to 10%VS
SRS0 = 1, SRS1 = 1
SRS0 = 1, SRS1 = 0
SRS0 = 0, SRS1 = 1
SRS0 = 0, SRS1 = 0
tOFF
16
16
42
42
18
20
50
51
V
VOUT≥VS−VDS(CL)3),
V
VDS≤VS -VOUT(CL)3),
mV
VIN=0V,
IL = -10 A
A
-
µs
VS = 13.5 V
RL = 2.7 Ω
µs
VS = 13.5 V
RL = 2.7 Ω
20
25
-
-
800
650
1000
850
25
-
-
-
95
120
170
320
190
240
340
640
Timings
6.1.8
6.1.9
Datasheet
High Current PROFETTM
-
22
55
70
100
170
110
140
200
340
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Smart High-Side Power Switch
BTS50040-2SFA
Electrical characteristics
VS = 9 V to 16 V, Vdd = 4.5 V to 5.5 V, Tj = -40 °C to +150 °C (unless otherwise specified)
typical values: VS = 13.5 V, Tj = 25 °C, Vdd = 5 V
Pos.
Parameter
Symbol
Limit Values
Min.
6.1.10
6.1.11
Slew rate On 30N50% VOUT
SRS0 = 1, SRS1 = 1
SRS0 = 1, SRS1 = 0
SRS0 = 0, SRS1 = 1
SRS0 = 0, SRS1 = 0
(dV/
dt)ON
Slew rate Off 50P30% VOUT
SRS0 = 1, SRS1 = 1
SRS0 = 1, SRS1 = 0
SRS0 = 0, SRS1 = 1
SRS0 = 0, SRS1 = 0
-(dV/
dt)OFF
Typ.
Unit
Conditions
V/µs
VS = 13.5 V
RL = 2.7 Ω
V/µs
VS = 13.5 V
RL = 2.7 Ω
µA
4)
Max.
-
0.40
0.24
0.14
0.07
0.80
0.48
0.28
0.16
-
0.42
0.31
0.20
0.09
0.84
0.62
0.42
0.21
Power supply
6.1.12
IS(OFF)
Stand-by current
Tj = -40 °C, Tj = 25 °C1)
Tj ≤ 85 °C 1)
Tj = 150 °C
-
5
5
35
,
VIN0 = VIN1 = 0V,
VSEN0 = VSEN1 = 0V,
Vdd = 0V,
12
12
115
no fault condition
6.1.13
Idle current for whole device with
loads, both channel OFF
IS(idle)
-
1.5
-
mA
4)
VIN0 = VIN1 = 0V,
VSEN0 = VSEN1 = 0V,
Vdd = 5V,
no fault condition
1)
Vdd(RESET)
Idd
6.1.14
Logic supply reset threshold
6.1.15
Logic supply current
6.1.16
Operating current for whole device IGND
active
VS = 0V
VIN0 = VIN1 = 5V,
VSEN0 = VSEN1 = 5V,
Vdd = 5V
VIN0 = VIN1 =5V,
VSEN0 = VSEN1 = 5V,
Vdd = 5V, IL = 0A
-
-
4.5
V
-
50
150
µA
-
10
20
mA
-0.3
-
1.0
V
-
2.0
-
5.5
V
-
-
175
-
mV
1)
50
100
200
kΩ
-
Input characteristics
6.1.17
L-input level
6.1.18
H-input level
6.1.19
input hysteresis
6.1.20
input pull down resistor
VIN(L)
VIN(H)
VIN(hys)
RIN
Over-Load Protection
6.1.21
6.1.22
Short circuit shutdown threshold
Tj = -40°C
Tj = 150°C
IL(SC)
Thermal shut down temperature
Tjt
Datasheet
High Current PROFETTM
A
130
90
180
230
155
150
170
-
°C
-
1)
23
V1.2, 2012-12-01
Smart High-Side Power Switch
BTS50040-2SFA
Electrical characteristics
VS = 9 V to 16 V, Vdd = 4.5 V to 5.5 V, Tj = -40 °C to +150 °C (unless otherwise specified)
typical values: VS = 13.5 V, Tj = 25 °C, Vdd = 5 V
Pos.
Parameter
Symbol
Limit Values
Min.
Typ.
Unit
Conditions
mΩ
IL = -10A,
Tj = 150°C
–
VIS < VIS(lim),
VIS < VS - 5 V
VINx = High
VSENx = High
VSENy = Low
ILy ≥ 0A
Max.
Reverse Battery
6.1.23
On-State resistance in case of
reverse polarity
VS=-8V1)
VS=-12V
RON(rev)
-
10
7.9
-
Diagnosis signal
6.1.24
Current sense ratio, static oncondition
ILx=20A
ILx=10A
ILx=5A
ILx=2A
kILIS
12500
14500
15500
18000
33000
10400
9800
8800
6600
VINx = 0 (e.g. during de energizing
disabled
of inductive loads)
6.1.25
Current sense voltage limitation1)
1)
VIS(lim)
0.92 x
IIS(lim)
3.5
6
10
mA
IIS(LL)
IIS(LH)
–
0.1
1
μA
–
5
100
μA
Vdd
Vdd
1.08 x V
Vdd
6.1.26
Sense saturation current
6.1.27
Current sense leakage current
6.1.28
Current sense offset current
6.1.29
Current sense settling time to 90% tsIS(ON)
IIS_stat. after switch-on1)
–
350
1000
μs
6.1.30
Current sense settling time to 10% tsIS(OFF)
IIS_stat. after switch-off 1)
–
50
100
μs
6.1.31
Current sense settling time to 90% tsIS(LC)
IIS_stat. after changing load 1)
(IL = 10N20A)
–
50
100
μs
6.1.32
Current sense settling time to 90% tsIS(SEN)
IIS_stat. after sense enable 1)
–
7
35
μs
6.1.33
Current sense deactivation time to tdIS(SEN)
10% IIS_stat. after sense disable 1)
–
7
35
μs
1)
2)
3)
4)
VSENx = 5 V,
VIS < VS - 5 V
VINx=VSENx=0V
VINx=VSENx=5V,
ILx ≤ 0A
VS = 13.5V,
VSENx = 5 V,
RL = 2.7 Ω
Not subject to production test, specified by design
according JESD51_7, FR4 2s2p board, 76.2 x 114.3 x 1.6 mm, 2x70µm Cu, 2x35µm Cu.
See Figure 11.
In case of protective switch-off STANDBY is only reached if the fault was acknowledged by a RESET signal
(SEN0&SEN1=High). See also Chapter 5.3.1 for details.
Datasheet
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V1.2, 2012-12-01
Smart High-Side Power Switch
BTS50040-2SFA
Application schematic
7
Application schematic
Figure 22 shows an example for an application schematic.
V bat
+5V
500R
10K
10K
10K
10K
µC
10K
10K
10K
47nF
1k
100nF
Vdd Vs
IN0
470nF
IN1
SEN0
OUT0
SEN1
OUT1
SRS0
SRS1
IS
LOAD0
GND
LOAD1
GND
Figure 22
application _diagram .emf
application example
Note: This is a simplified example of an application circuit. The function must be verified in the real application.
7.1
•
•
•
•
Handling of NC pins: It is recommended to connect all NC pins on a defined potential. E.g. pin 6 and pin 36
could be connected to GND potential.
EMC filter cap between Vs and GND: It is recommended to place the filter cap as close as possible to the
device to minimize the inductance of the loop.
The resistors connecting µC and input pins INx, SENx, SRSx, are recommended for protection of pins against
fast electrical transients.
Ground shift: It is recommended to avoid a ground shift between µC ground and device pin GND of more than
0.3V during normal operation.
7.2
•
•
•
Hints for PCB layout
Further Application Information
Please contact us to get the Pin FMEA
Please contact us to get a test report on short circuit robustness according to AEC Q100-012
For further information you may contact http://www.infineon.com/
Datasheet
High Current PROFETTM
25
V1.2, 2012-12-01
Smart High-Side Power Switch
BTS50040-2SFA
Package Outlines
0.33 ±0.08
0.1
2)
0.35 x 45˚
0.23 +0.09
7.6 -0.2 1)
C
8˚ MAX.
0.65
2.65 MAX.
2.45 -0.2
Package Outlines
0.2 -0.1
8
0.7 ±0.2
0.17 M C A-B D 36x
10.3 ±0.3
D
Bottom View
A
36
19
19
36
Ejector Mark
1
18
18
1
B
1)
12.8 -0.2
Index Marking
Index Marking
1) Does not include plastic or metal protrusion of 0.15 max. per side
2) Does not include dambar protrusion of 0.05 max. per side
GPS01089
0.45
0.65
1.67
9.73
HLGF1145
Figure 23
PG-DSO-36-44 (Plastic Dual Small Outline Package)
Green Product (RoHS compliant)
To meet the world-wide customer requirements for environmentally friendly products and to be compliant with
government regulations the device is available as a green product. Green products are RoHS-Compliant (i.e
Pb-free finish on leads and suitable for Pb-free soldering according to IPC/JEDEC J-STD-020).
You can find all of our packages, sorts of packing and others in our
Infineon Internet Page “Products”: http://www.infineon.com/products.
Datasheet
High Current PROFETTM
26
Dimensions in mm
V1.2, 2012-12-01
Smart High-Side Power Switch
BTS50040-2SFA
Revision History
9
Revision History
BTS50040-2SFA
Revision History: V1.2, 2012-12-01
Version
Date
Changes
DS V1.2
2012-11-30
Chapter 6: Specification limits for parameter kILIS tightened. Figure 21 updated.
DS V1.1
2012-01-18
Chapter 1: Typing error corrected on Page 3, parameter IL(SC).
DS V1.0
2011-11-25
Initial version of datasheet
Datasheet
High Current PROFETTM
27
V1.2, 2012-12-01
Edition 2012-12-01
Published by
Infineon Technologies AG
81726 Munich, Germany
© 2012 Infineon Technologies AG
All Rights Reserved.
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