BTS5045-2EKA

Updated: 2026-09-16

Overview

The BTS5045-2EKA is a smart high-side power switch designed for industrial and automotive applications. It integrates advanced protection mechanisms, including over-current, over-temperature, and short-circuit protection, ensuring reliable operation in harsh conditions. The device is part of Infineon's PROFET™ family, known for its high efficiency and diagnostic capabilities. With a typical on-state resistance of 45 mΩ, the BTS5045-2EKA can handle significant current loads while minimizing power losses. Its compact design and robust performance make it suitable for use in power distribution modules, motor control systems, and other high-demand applications.

Structure and Working Principle

The BTS5045-2EKA consists of a MOSFET-based power switch with integrated control logic. The device operates by receiving a low-voltage control signal, which activates the high-side switch, allowing current to flow to the load. Built-in diagnostic features provide feedback on the switch status, including fault conditions such as over-current or over-temperature. The device also includes a charge pump to ensure proper gate drive voltage for the MOSFET, enabling efficient switching even at low supply voltages. This design ensures reliable performance across a wide range of operating conditions, from automotive battery systems to industrial power supplies.

Key Features

The BTS5045-2EKA offers several standout features, including a high current rating (up to 45 A continuous) and low on-state resistance, which reduces power dissipation and improves efficiency. Its diagnostic capabilities include open-load detection, short-circuit protection, and over-temperature shutdown, enhancing system reliability. Additionally, the device supports PWM (Pulse Width Modulation) operation, making it suitable for applications requiring variable power control. The integrated protection features minimize the need for external components, simplifying design and reducing overall system cost.

Application Areas

The BTS5045-2EKA is widely used in automotive systems, such as power distribution modules, lighting control, and motor drives. Its robust design and diagnostic features make it ideal for safety-critical applications where reliability is paramount. In industrial settings, the device is employed in power management systems, relay replacements, and load switching. Its ability to handle high currents and provide diagnostic feedback makes it a versatile choice for automation and control systems.

Maintenance and Precautions

To ensure optimal performance, the BTS5045-2EKA should be operated within its specified voltage and current ratings. Proper heat dissipation is critical, especially in high-current applications, to prevent thermal shutdown or damage. When designing with this component, ensure the PCB layout accommodates adequate thermal vias and heat sinking. Avoid exposing the device to voltages beyond its absolute maximum ratings, and follow ESD (Electrostatic Discharge) precautions during handling and assembly.

B2B Procurement Guide

When procuring the BTS5045-2EKA, verify the supplier's authenticity to avoid counterfeit components. Check for compliance with industry standards, such as AEC-Q100 for automotive applications. Bulk purchases typically offer cost savings, but ensure lead times align with project schedules. For reference, the price per unit ranges from approximately $2.50 to $4.00, depending on order volume and supplier. Consider technical support and documentation availability when selecting a vendor.