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BTS452R from INFINEO,Infineon

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BTS452R

Manufacturer: INFINEO, INFINEEN

Smart Power High-Side-Switch

Partnumber Manufacturer Quantity Availability
BTS452R INFINEO, INFINEEN 124 In Stock

Description and Introduction

Smart Power High-Side-Switch The **BTS452R** is a smart high-side power switch manufactured by **Infineon**. Here are its key specifications:  

- **Output Current (Continuous):** 5 A  
- **Output Current (Peak):** 7 A  
- **Supply Voltage Range:** 4.5 V to 28 V  
- **On-State Resistance (RDS(on)):** 45 mΩ (typical)  
- **Protection Features:** Overcurrent, overtemperature, short-circuit, and reverse polarity protection  
- **Logic Input Voltage:** 3.3 V / 5 V compatible  
- **Package:** PG-TO252-5 (DPAK-5)  
- **Operating Temperature Range:** -40°C to +150°C  
- **Diagnostic Feedback:** Open-drain status output  

This device is commonly used in automotive and industrial applications for controlling resistive, inductive, and capacitive loads.  

Let me know if you need further details.

Application Scenarios & Design Considerations

Smart Power High-Side-Switch# Technical Documentation: BTS452R Smart High-Side Power Switch

 Manufacturer : INFINEO  
 Document Version : 1.0  
 Date : October 26, 2023  

---

## 1. Application Scenarios

The BTS452R is a  smart high-side power switch  based on a  n-channel vertical power MOSFET  with charge pump, integrated in a  PG-TO263-7  (DPAK) package. It is designed for the electronic management of power up to approximately 45A in a wide range of resistive and inductive loads. Its integrated protection and diagnostic features make it a robust solution for switching and protecting power paths in demanding 12V and 24V automotive and industrial systems.

### 1.1 Typical Use Cases

*    Direct Load Control:  Driving resistive loads such as  heating elements (PTC heaters), incandescent lamps, and LED arrays . Its high continuous current rating makes it suitable for high-power lighting and heating applications.
*    Inductive Load Switching:  Reliably controlling  solenoids, valves, relays, and small DC motors  (e.g., in HVAC flaps, door locks, or actuators). The device's integrated clamp and protection features handle the inductive kickback energy.
*    Power Distribution:  Serving as a  protected switch in centralized power distribution boxes  or  fuse/relay replacement modules . It allows for intelligent, software-controlled switching and diagnostics for individual power rails.
*    Inrush Current Management:  Controlling loads with high inrush currents, such as  capacitive loads or lamps during cold start . The device's thermal shutdown and current limitation protect it during these transient events.

### 1.2 Industry Applications

*    Automotive: 
    *    Body Control Modules (BCM):  Controlling interior lighting, headlamps, seat heaters, window lifters, and wiper motors.
    *    Powertrain:  Managing solenoids for transmission control or turbo actuators.
    *    Thermal Management:  Switching fans and PTC heaters for battery thermal management or cabin heating.
*    Industrial Automation: 
    *    PLC Output Modules:  Providing a robust, protected digital output for actuators and indicators.
    *    Motor Drives:  As a pre-driver or main switch for small DC motors in conveyor belts or robotic arms.
*    Consumer/Commercial Appliances:  Power switching in high-end white goods, coffee machines, or vending machines requiring reliable and safe operation.

### 1.3 Practical Advantages and Limitations

 Advantages: 
*    High Integration:  Combines power switch, driver, charge pump, protection, and diagnostics in one package, reducing external component count and PCB area.
*    Robust Protection:  Features include  overload/short-circuit current limitation, overtemperature shutdown, undervoltage lockout (UVLO), and electrostatic discharge (ESD) protection . The active clamp protects against overvoltage from inductive turn-off.
*    Advanced Diagnostics:  The  status feedback (ST) pin  provides real-time information on switch condition (e.g., normal operation, open load, overtemperature, short to ground).
*    Low Power Consumption:  Very low quiescent current in sleep mode, crucial for automotive applications with strict quiescent current requirements.
*    Green Product (RoHS compliant):  Meets environmental directives.

 Limitations: 
*    Fixed Functionality:  The protection thresholds (e.g., current limit, thermal shutdown) are fixed by design and not adjustable by the user.
*    Package Thermal Limits:  While robust, the maximum power dissipation is ultimately limited by the DPAK package's thermal resistance (RthJA). Careful thermal design is mandatory for high-current applications.
*    High-Side Only:  Designed exclusively as

Alternative Part Number

  • BTS50085-1TMB --: Same manufacturer's high-side power switch family with comparable RDS(on) and current rating, suitable replacement for BTS452R in automotive load-switch applications.
  • VND5E025AK-E --: Automotive high-side driver with similar voltage and current capability, commonly used as a cross-manufacturer alternative to Infineon BTS45x series.
  • MC33984 --: High-side switch with comparable load-driving capability and protection features, usable as an alternative when BTS452R is unavailable.
  • BTS50085-1TMA --: Same PROFET high-side switch family with comparable RDS(on) and current rating, suitable drop-in for 12V automotive load switching.
  • BTS5016-1EKB --: PROFET smart high-side switch with similar voltage/current class and integrated protection features, good functional replacement.
  • VND5N07-E --: Alternative high-side driver from another vendor with comparable on-resistance and automotive protection, usable when cross-vendor sourcing is acceptable.

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