Data Sheet, Rev.1.2, Sep 2008
BTS5242-2L
Smart High-Side Power Switch
Automotive Power
Smart High-Side Power Switch
BTS5242-2L
Table of Contents
1
2
2.1
3
3.1
3.2
4
4.1
5
5.1
5.1.1
5.1.2
5.1.3
5.1.4
5.2
6
6.1
6.2
6.3
6.4
6.5
7
7.1
7.2
7.3
8
9
Overview
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Block Diagram
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Terms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Pin Configuration
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Pin Assignment BTS5242-2L . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Pin Definitions and Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Electrical Characteristics
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Block Description and Electrical Characteristics
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Stages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Output On-State Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inductive Output Clamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thermal Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Protection Functions
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Over Load Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reverse Polarity Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Over Voltage Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loss of Ground Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Diagnosis
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ON-State Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
OFF-State Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10
10
10
10
11
13
14
15
15
16
16
16
17
18
19
20
21
Package Outlines BTS5242-2L
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Revision History
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Data Sheet
2
Rev.1.2, 2008-09-01
Smart High-Side Power Switch
PROFET
BTS5242-2L
1
•
•
•
•
•
•
•
•
•
Overview
Very low standby current
3.3 V and 5 V compatible logic pins
Improved electromagnetic compatibility (EMC)
Stable behavior at under voltage
Logic ground independent from load ground
Secure load turn-off while logic ground disconnected
Very low leakage current from OUT to GND
Green Product (RoHS compliant)
AEC Qualified
Basic Features
PG-DSO-12-9
Product Summary
The BTS5242-2L is a dual channel high-side power switch in PG-DSO-12-9 package providing embedded
protective functions.
The power transistor is built by a N-channel vertical power MOSFET with charge pump. The device is
monolithically integrated in Smart SIPMOS technology.
Operating voltage
Over voltage protection
On-State resistance
Nominal load current (one channel active)
Adjustable current limitation
Current limitation repetitive
Standby current for whole device with load
V
bb(on)
V
bb(AZ)
R
DS(ON)
4.5 .. 28 V
41 V
25 mΩ
6A
7 A / 40 A
7 A / 40 A
7.5 µA
I
L(nom)
I
L(LIM)
I
L(SCr)
I
bb(OFF)
Type
BTS5242-2L
Data Sheet
Package
PG-DSO-12-9
3
Marking
BTS5242-2L
Rev.1.2, 2008-09-01
Smart High-Side Power Switch
BTS5242-2L
Overview
Protective Functions
•
•
•
•
•
•
•
•
•
Reverse battery protection with external resistor
Short circuit protection
Overload protection
Multi-step current limitation
Adjustable current limitation
Thermal shutdown with restart
Over voltage protection with external resistor
Loss of ground and loss of
V
bb
protection
Electrostatic discharge protection (ESD)
Diagnostic Functions
•
•
•
•
•
•
IntelliSense functionality for each channel
Proportional load current sense signal by current source
Open load detection in ON-state by load current sense
Open load detection in OFF-state by voltage source
Feedback on over temperature and current limitation in ON-state
Suppressed thermal toggling of fault signal
Applications
•
•
•
•
µC compatible high-side power switch with diagnostic feedback for 12 V grounded loads
All types of resistive, inductive and capacitive loads
Most suitable for loads with high inrush currents, so as lamps
Replaces electromechanical relays, fuses and discrete circuits
Data Sheet
4
Rev.1.2, 2008-09-01
Smart High-Side Power Switch
BTS5242-2L
Block Diagram
2
Block Diagram
The BTS5242-2L is a dual channel high-side power switch (two times 25 mΩ) in PG-DSO-12-9 power package
providing embedded protective functions. Integrated resistors at each input pin (IN1, IN2, CLA) reduce external
components.
The load current limitation can be adjusted in two steps by the current limit adjust pin (CLA).
The IntelliSense pins IS1 and IS2 provide a sophisticated diagnostic feedback signal including current sense
function, open load in off state and over load alert.
The power transistor is built by a N-channel vertical power MOSFET with charge pump. The inputs are ground
referenced CMOS compatible. The device is monolithically integrated in Smart SIPMOS technology.
channel 1
VBB
load current
sense
clamp for
inductive load
internal
power
supply
logic
IN1
IS1
CLA
ESD
protection
gate control
&
charge pump
open load
detection
temperature
sensor
multi step
load current
limitation
OUT1
channel 2
IN2
IS2
control and protection circuit
equivalent to
channel 1
OUT2
GND
Figure 1
Block Diagram
Data Sheet
5
Rev.1.2, 2008-09-01
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