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Datasheet PROFET
BTS 723 GW
Smart High-Side Power Switch
Two Channels: 2 x 100mΩ
Status Feedback
Suitable for 42V
Product Summary Package
Operating Voltage V
bb(on)
7.0 ... 58V
Active channels One two parallel
On-state Resistance R
ON
105mΩ 53mΩ
Nominal load current I
L(NOM)
2.9A 4.2A
Current limitation I
L(SCr)
8A 8A
P-DSO-14
General Description
•
•
•
N channel vertical power MOSFET with charge pump, ground referenced CMOS compatible input and
diagnostic feedback, monolithically integrated in Smart SIPMOS
80V technology.
Providing embedded protective functions
An array of resistors is integrated in order to reduce the external components
Applications
•
•
•
•
µC compatible high-side power switch with diagnostic feedback for 12V and 24V and 42V grounded loads
All types of resistive, inductive and capacitive loads
Most suitable for inductive loads
Replaces electromechanical relays, fuses and discrete circuits
Basic Functions
•
•
•
•
•
•
•
CMOS compatible input
Improved electromagnetic compatibility (EMC)
Fast demagnetization of inductive loads
Stable behaviour at undervoltage
Wide operating voltage range
Logic ground independent from load ground
Optimized inverscurrent capability
Block Diagram
Status pull
up voltage
Vbb
Protection Functions
• Short circuit protection
• Overload protection
• Current limitation
• Thermal shutdown
• Overvoltage protection (including load dump) with external
resistor
• Reverse battery protection with external resistor
• Loss of ground and loss of V
bb
protection
• Electrostatic discharge protection (ESD)
IN1
ST1
Logic
Channel
1
Logic
Channel
2
OUT 1
Load 1
OUT 2
Load 2
IN2
ST2
Diagnostic Function
•
•
•
•
PROFET
Diagnostic feedback with open drain output and integrated
GND
pull up resistors
Open load detection in OFF-state
Feedback of thermal shutdown in ON-state
Diagnostic feedback of both channels works properly in case of inverse current
Infineon Technologies AG 1 of 15 2003-Oct-01
Functional diagram
BTS 723 GW
11
SPU: Pin for external Pull Up Voltage
Leadframe:
V
bb
1, 7,
8, 14
2
IN1
R = 20kΩ
R = 12kΩ
Functions and Components of
inputlogic and gate-control:
-
ESD-protection
Charge pump, level shifter,
-
rectifier
-
Gate protection
-
Current limit
-
Limit for unclamped
inductive loads
Function and components of
outputlogic
Open load detection
-
Short circuit detection
-
-
Temperature sensor
OUT1
12, 13
Load 1
Load GND
V
bb
3
ST1
R = 850
Ω
Status 1
Function see truthtable
Logic channel one
Logic channel two
Function and components of
inputlogic and gate-control
equivalent to channel one
Function and components of
outputlogic equivalent to
channel one
6
IN2
R = 20kΩ
OUT2
9, 10
5
ST2
R = 850Ω
Status 2
Functionseetruthtable
Load 2
Logic GND
PROFET
Load GND
4
Infineon Technologies AG 2 2003-Oct-01
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