SIEMENS PROFET BTS550P Preliminary Data Sheet Owner's Manual User Guide
Summary
The BTS550P is a high-reliability Smart Power Switch, built using advanced FET technology, designed for controlling resistive and inductive loads in 12V and 24V DC systems. This manual details its robust performance capabilities, featuring integrated protection against overload, overvoltage, and short circuits. Ideal for applications demanding precise current monitoring (via diagnostic feedback) or high resistance to inrush currents (like motors and lamps), it serves as a modern replacement for traditional fuses and electromechanical relays in demanding industrial environments.
Page 1 Text Content
PROFET® Preliminary Data Sheet BTS550P
Smart Highside High Current Power Switch Features Product Summary • Overload protection
Overvoltage protection Vbb(AZ)
• Current limitation
Output clamp VON(CL)
• Short circuit protection
• Overtemperature protection Operating voltage Vbb(on) 5.0 ... 34
• Overvoltage protection (including load dump)
On-state resistance RON 4.0 mΩ
• Clamp of negative voltage at output
Load current (ISO) IL(ISO)
• Fast deenergizing of inductive loads 1)
• Low ohmic inverse current operation Short circuit current limitation IL(SCp)
• Reverse battery protection Current sense ratio IL : IIS • Diagnostic feedback with load current sense • Open load detection via current sense • Loss of Vbb protection2)
TO-218AB/5
• Electrostatic discharge (ESD) protection
Application • Power switch with current sense diagnostic feedback for 12 V and 24 V DC grounded loads • Most suitable for loads with high inrush current like lamps and motors; all types of resistive and
inductive loads Straight leads
• Replaces electromechanical relays, fuses and discrete circuits
General Description N channel vertical power FET with charge pump, current controlled input and diagnostic feedback with load current sense, integrated in Smart SIPMOS chip on chip technology. Fully protected by embedded protection functions.
3 & Tab + Vbb
Voltage Overvoltage Current Gate source protection limit protection
1, 5 OUT
Limit for
Voltage Charge pump
unclamped
sensor
ind. loads
Level shifter
Current Rectifier Sense
Output IN Voltage Load
Logic ESD detection
Temperature sensor
PROFET
Load GND
Logic GND
1) With additional external diode. 2) Additional external diode required for energized inductive loads (see page 8).
Semiconductor Group Page 1 of 15 1998-Aug-31
Page Summary Contents For SIEMENS PROFET BTS550P Preliminary Data Sheet Owner's Manual User Guide
Manual Details
| Brand | Siemens |
|---|---|
| Pages | 15 |
| File Size | 171.68 KB |
| Published | June 02, 2026 |
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Frequently Asked Questions
What types of loads is the BTS550P suitable for?
It is most suitable for resistive and inductive loads such as lamps and motors, and all types of grounded loads (12V and 24V DC).
What safety features does this power switch include?
It includes multiple embedded protection functions like Overvoltage/Undervoltage protection, Overtemperature protection, Short circuit protection, and Load dump protection.
Are there specific wiring warnings for high-current use?
Pins 1 and 5 must be shorted together, especially in high current applications, to maintain proper performance.