Data Sheet, Rev.1.0, April 2008
BTS4175SGA
Smart High-Side Power Switch
Automotive Power
BTS4175SGA
1
Overview 3
2
Block Diagram 5
3
3.1
3.2
3.3
Pin Configuration 6
Pin Assignment 6
Pin Definitions and Functions 6
Voltage and Current Definition 7
4
4.1
4.2
4.3
General Product Characteristics 8
Absolute Maximum Ratings 8
Functional Range 9
Thermal Resistance 9
5
5.1
5.2
5.3
5.4
Power Stage 10
Output ON-State Resistance 10
Turn ON / OFF Characteristics 10
Inductive Output Clamp 11
Electrical Characteristics Power Stage 13
6
6.1
6.2
6.3
6.4
6.5
6.6
Protection Mechanisms 14
Loss of Ground Protection 14
Undervoltage Protection 14
Overvoltage Protection 14
Reverse Polarity Protection 15
Overload Protection 15
Electrical Characteristics Protection Functions 17
7
7.1
7.2
7.2.1
7.2.2
7.3
Diagnostic Mechanism 18
ST Pin 18
ST Signal in Case of Failures 18
Diagnostic in Open Load, Channel OFF 18
ST Signal in case of Over Temperature 20
Electrical Characteristics Diagnostic Functions 21
8
8.1
8.2
Input Pin 22
Input Circuitry 22
Electrical Characteristics 22
9
9.1
Application Information 23
Further Application Information 23
10
Package Outlines 24
11
Revision History 25
Data Sheet
2
Rev.1.0, 2008-04-29
Smart High-Side Power Switch
1
BTS4175SGA
Overview
Basic Features
•
•
•
•
•
•
•
•
•
•
Fit for 12V and 24V application
One Channel device
Very Low Stand-by Current
CMOS Compatible Inputs
Electrostatic Discharge Protection (ESD)
Optimized Electromagnetic Compatibility
Logic ground independent from load ground
Very Low Leakage Current from OUT to the load in OFF state
Green Product (RoHS compliant)
AEC Qualified
PG-DSO-8-24
Description
The BTS4175SGA is a single channel Smart High-Side Power Switch. It is embedded in a PG-DSO-8-24 package,
providing protective functions and diagnostics. The power transistor is built by a N-channel power MOSFET with
charge pump. The device is monolithically integrated in Smart technology. It is specially designed to drive Relay,
R5W lamp or LED in the harsh automotive environment.
Table 1
Electrical Parameters (short form)
Parameter
Symbol
Value
Operating voltage range
VSOP
VS (AZ)
RDS(ON)
IL (nom)
IL_SCR
IS(off)
-Vs(REV)
6V .... 52V
Over voltage protection
Maximum ON State resistance at Tj = 150°C
Nominal load current
Minimum current limitation
Standby current for the whole device with load
Maximum reverse battery voltage
62V
350mΩ
1.3A
6A
18µA
52V
Diagnostic Feature
•
•
•
•
Open load in OFF
Feedback of the thermal shutdown in ON state
Feedback of the current limitation
Diagnostic feedback with open drain output
Type
Package
Marking
BTS4175SGA
PG-DSO-8-24
4175SGA
Data Sheet
3
Rev.1.0, 2008-04-29
BTS4175SGA
Overview
Protection Functions
•
•
•
•
•
•
•
Short circuit protection
Overload protection
Current limitation
Thermal shutdown
Overvoltage protection (including load dump) with external resistor
Loss of ground and loss of battery protection
Electrostatic discharge protection (ESD)
Application
•
All types of relays, lamps and resistive loads
Data Sheet
4
Rev.1.0, 2008-04-29
BTS4175SGA
Block Diagram
2
Block Diagram
VS
voltage sensor
internal
power
supply
over
temperature
driver
logic
IN
gate control
&
charge pump
E SD
protection
T
clamp for
inductive load
over current
switch off
open load detection
OUT
ST
GND
Figure 1
Data Sheet
Block diagram .emf
Block diagram for the BTS4175SGA
5
Rev.1.0, 2008-04-29
BTS4175SGA
Pin Configuration
3
Pin Configuration
3.1
Pin Assignment
GND
1
8
VS
IN
2
7
VS
OUT
3
6
VS
ST
4
5
VS
Figure 2
Pin Configuration
3.2
Pin Definitions and Functions
Pin
Symbol
Function
1
GND
Ground; Ground connection
2
IN
Input channel; Input signal. Activate the channel in case of logic high level
3
OUT
Output; Protected High side power output channel
4
ST
Diagnostic feedback; of channel. Open drain.
5, 6, 7, 8
VS
Battery voltage; Design the wiring for the simultaneous max. short circuit current
and also for low thermal resistance
Data Sheet
6
Rev.1.0, 2008-04-29
BTS4175SGA
Pin Configuration
3.3
Voltage and Current Definition
Figure 3 shows all terms used in this data sheet, with associated convention for positive values.
IS
VS
VD S
VS
IIN
IN
IL
OUT
VIN
VOU T
IST
ST
V ST
GND
R GND
I GN D
Voltage and current convention
single avec diag.vsd
Figure 3
Data Sheet
Voltage and current definition
7
Rev.1.0, 2008-04-29
BTS4175SGA
General Product Characteristics
4
General Product Characteristics
4.1
Absolute Maximum Ratings
Absolute Maximum Ratings 1)
TJ = 25°C; (unless otherwise specified)
Pos.
Parameter
Symbol
Limit Values
Unit
Conditions
Min.
Max.
–
52
V
–
0
52
V
–
0
36
V
RECU = 20mΩ,
RCable=16mΩ/m,
LCable=1µH/m,
Voltages
VS
- VS(REV)
4.1.1
Supply voltage
4.1.2
Reverse polarity Voltage
4.1.3
Supply voltage for short circuit protection Vbat(SC)
l = 0 or 5m 2)
see Chapter 6
Input pins
4.1.4
Voltage at INPUT pins
4.1.5
Current through INPUT pins
VIN
IIN
-10
16
V
–
-5
5
mA
–
Power stage
4.1.6
Load current
| IL |
–
IL(LIM)
A
–
4.1.7
Power dissipation (DC),
PTOT
–
1.5
W
4.1.8
Inductive load switch off energy
dissipation, Single pulse
EAS
–
125
mJ
TA=85°C,
Tj V(OL)
L1)
H
H
H
L
L
H
H
L
L
Open Load channel
Over temp channel
1) L if potential at the output exceeds the Openload detection voltage
7.2.1
Diagnostic in Open Load, Channel OFF
For open load diagnosis in OFF-state, an external output pull-up resistor (ROL) is recommended. For calculation
of the pull-up resistor value, the leakage currents and the open load threshold voltage VOL(OFF) has to be taken into
account. Figure 13 gives a sketch of the situation and Figure 14 shows the typical timing diagram.
Ileakage defines the leakage current in the complete system, including IL(OFF) (see Chapter 5.4) and external
leakages e.g due to humidity, corrosion, etc... in the application.
To reduce the stand-by current of the system, an open load resistor switch SOL is recommended.
Data Sheet
18
Rev.1.0, 2008-04-29
BTS4175SGA
Diagnostic Mechanism
If the channel is OFF, the output is no longer pulled down by the load and VOUT voltage rises to nearly VS. This is
recognized by the device as open load. The voltage threshold is given by VOL(OFF). In that case, the ST signal is
switched to a logical low VSTL.
Vbat
SOL
BTS4175SGA
VS
R OL
OUT
I LOFF
OL
comp.
R PD
Ileakage
GND
VOL(OFF )
RGND
Rleakage
Open Load in OFF .vsd
Figure 13
Open load detection in OFF electrical equivalent circuit
IN
t
V OUT
VOL(OFF)
IL
t
t
ST
V ST(HIGH)
VST(LOW)
t
Diagnostic In Open load full diag.vs
Figure 14
Data Sheet
ST in open load condition
19
Rev.1.0, 2008-04-29
BTS4175SGA
Diagnostic Mechanism
7.2.2
ST Signal in case of Over Temperature
In case of over temperature, the junction temperature reaches the thermal shutdown temperature TjSC.
In that case, the ST signal is stable and remains to toggling between VST(L) and VST(H). Figure 15 gives a sketch
of the situation.
IN
t
V OUT
t
ST
t
T JSC
ΔT JSC
TJ
t
Diagnostic In Overload full toggling.vs
Figure 15
Sense signal in overtemperature condition
.
Data Sheet
20
Rev.1.0, 2008-04-29
BTS4175SGA
Diagnostic Mechanism
7.3
Electrical Characteristics Diagnostic Functions
Electrical Characteristics: Diagnostics
VS = 13.5 V, Tj = -40 °C to +150 °C, (unless otherwise specified) Typical values are given at Vs = 13.5V, Tj = 25°C
Pos.
Parameter
Symbol
Limit Values
Min.
Typ.
Max.
Unit
Conditions
Load condition threshold for diagnostic
7.3.1
Open Load detection threshold
in OFF state1)
VOL(OFF)
–
3.0
4.0
V
VIN = 0V
7.3.1
Short circuit detection voltage
VOUT(SC)
–
2.8
–
V
–3)
Status output (open drain)
High level; Zener limit voltage
VST (HIGH)
5.4
6.1
–
V
IST = +1,6mA2),
Status output (open drain)
Low level
VST (LOW)
ST pin
7.3.2
7.3.3
Zener Limit voltage
–
–
0.6
V
IST =+1,6mA2)
Diagnostic timing
7.3.4
Status invalid after positive input tdST(+)
slope
–
120
160
µs
–3)
7.3.5
Status invalid after negative
input slope
tdST(-)
–
250
400
µs
–
1) External pull up resistor required for open load detection in OFF state
2) If ground resistor RGND is used, the voltage drop across this resistor has to be added
3) Not subject to production test, specified by design
Data Sheet
21
Rev.1.0, 2008-04-29
BTS4175SGA
Input Pin
8
Input Pin
8.1
Input Circuitry
The input circuitry is CMOS compatible. The concept of the Input pin is to react to voltage transition and not to
voltage threshold. With the Schmidt trigger, it is impossible to have the device in an un-defined state, if the voltage
on the input pin is slowly increasing or decreasing. The output is either OFF or ON but cannot be in an linear or
undefined state. The input circuitry is compatible with PWM applications. Figure 16 shows the electrical equivalent
input circuitry. The pull down current source ensures the channel is OFF with a floating input.
IN
RI
II
To driver’s logic
ESD
Input circuitry.vsd
Figure 16
Input pin circuitry
8.2
Electrical Characteristics
Electrical Characteristics: Diagnostics
VS = 13.5 V, Tj = -40 °C to +150 °C, Typical values are given at Vs = 13.5V, Tj = 25°C
Pos.
Parameter
Symbol
Limit Values
Unit
Conditions
Min.
Typ.
Max.
–
–
0.8
V
–1)
2.2
–
–
V
–1)
–
0.4
–
V
–2)
1
–
25
µA
3
–
25
µA
VIN= 0,7V
VIN= 5V
2
3.5
5
kΩ
See Figure 16
INput pins characteristics
8.2.1
Low level input voltage
8.2.2
High level input voltage
8.2.3
Input voltage hysteresis
8.2.4
Low level input current
8.2.5
High level input current
8.2.6
Input resistance
VIN(L)
VIN(H)
VIN(HYS)
IIN(L)
IIN(H)
RI
1) If ground resistor RGND is used, the voltage drop across this resistor has to be added
2) Not subject to production test, specified by design
Data Sheet
22
Rev.1.0, 2008-04-29
BTS4175SGA
Application Information
9
Application Information
Note: The following information is given as a hint for the implementation of the device only and shall not be
regarded as a description or warranty of a certain functionality, condition or quality of the device.
VBAT
VDD
VDD
RPUST
VBAT_SW
R IN
Vdd
ROL
Vs
OUT
Microcontroller
(e.g. XC22xx)
IN
IN
ST
OUT
RST
GND
GND
R GND
Application example single avec diag.vsd
IS
Figure 17
Application diagram with BTS4175SGA
Note: This is a very simplified example of an application circuit. The function must be verified in the real application.
9.1
•
Further Application Information
For further information you may visit http://www.infineon.com/
Data Sheet
23
Rev.1.0, 2008-04-29
BTS4175SGA
Package Outlines
10
Package Outlines
1.27
0.1
0.41 +0.1
-0.05
+0.05
-0.01
0.2
C
0.64 ±0.25
0.2 M A C x8
8
5
Index
Marking 1
4
5 -0.21)
8˚ MAX.
4 -0.21)
1.75 MAX.
0.1 MIN.
(1.5)
0.33 ±0.08 x 45˚
6 ±0.2
A
Index Marking (Chamfer)
1)
Figure 18
Does not include plastic or metal protrusion of 0.15 max. per side
PG-DSO-8-24 (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 Pbfree finish on leads and suitable for Pb-free soldering according to IPC/JEDEC J-STD-020).
Data Sheet
24
Rev.1.0, 2008-04-29
BTS4175SGA
Revision History
11
Revision History
Version
Date
Changes
1.0
2008-03-12
Creation of the data sheet
Data Sheet
25
Rev.1.0, 2008-04-29
Edition 2008-04-29
Published by
Infineon Technologies AG
81726 Munich, Germany
© 2008 Infineon Technologies AG
All Rights Reserved.
Legal Disclaimer
The information given in this document shall in no event be regarded as a guarantee of conditions or
characteristics. With respect to any examples or hints given herein, any typical values stated herein and/or any
information regarding the application of the device, Infineon Technologies hereby disclaims any and all warranties
and liabilities of any kind, including without limitation, warranties of non-infringement of intellectual property rights
of any third party.
Information
For further information on technology, delivery terms and conditions and prices, please contact the nearest
Infineon Technologies Office (www.infineon.com).
Warnings
Due to technical requirements, components may contain dangerous substances. For information on the types in
question, please contact the nearest Infineon Technologies Office.
Infineon Technologies components may be used in life-support devices or systems only with the express written
approval of Infineon Technologies, if a failure of such components can reasonably be expected to cause the failure
of that life-support device or system or to affect the safety or effectiveness of that device or system. Life support
devices or systems are intended to be implanted in the human body or to support and/or maintain and sustain
and/or protect human life. If they fail, it is reasonable to assume that the health of the user or other persons may
be endangered.