Infineon BTS3050EJXUMA1 Smart High-Side Power Switch: Datasheet, Application Circuit, and Features
The Infineon BTS3050EJXUMA1 is a state-of-the-art smart high-side power switch designed to deliver robust performance and advanced protection features in a wide range of automotive and industrial applications. As part of Infineon’s PROFET™ (Protected MOSFET) family of products, this device integrates a low on-resistance N-channel power MOSFET with comprehensive monitoring and protection circuitry into a compact and efficient package.
Key Features
The BTS3050EJXUMA1 offers a continuous current capability of up to 230 mA with an exceptionally low typical on-state resistance (RDS(on)) of 500 mΩ. This ensures minimal power dissipation and high energy efficiency. The device operates from a supply voltage range of 5.5 V to 40 V, making it suitable for both 12 V and 24 V battery systems commonly found in automotive environments.
One of its standout characteristics is its comprehensive suite of integrated protection functions. These include overload protection, short-circuit protection, overtemperature shutdown, and overvoltage protection (including load-dump resilience). Additionally, the device features reverse battery protection up to -18 V, which is critical for automotive safety.
The switch also provides diagnostic feedback via a status output pin, which can signal conditions such as open-load (in off-state), overtemperature pre-warning, and short-circuit events. This enables smarter system management and easier debugging.
Application Circuit
A typical application circuit for the BTS3050EJXUMA1 is straightforward, thanks to its high level of integration. The device is controlled via a microcontroller-compatible input pin (IN), which accepts a logic-level signal to turn the output stage on or off. The status output (IS) pin provides a current source output proportional to the load current, which can be read by an ADC or used with a pull-down resistor to generate a voltage signal for diagnosis.
A standard circuit includes decoupling capacitors at the supply pin (VBB) for stability, a pull-down resistor at the IN pin for defined behavior, and a resistor at the IS pin to convert the diagnostic current into a measurable voltage. The output (OUT) pin drives the load, which could be a resistive, inductive, or capacitive load such as solenoids, lamps, or small motors.
Datasheet Overview
The datasheet for the BTS3050EJXUMA1 provides detailed information on electrical characteristics, timing diagrams, thermal properties, and application notes. Key parameters outlined include the maximum ratings, switching characteristics, and truth table for the input and status pins. The device is available in a TSDSO-14 package, which offers an efficient footprint while ensuring good thermal performance.
The Infineon BTS3050EJXUMA1 stands out as a highly reliable and intelligent solution for switching and protecting medium-current loads. Its blend of low power loss, extensive diagnostic features, and robust protection mechanisms makes it an excellent choice for demanding applications in automotive body electronics, industrial control systems, and power management units.
Keywords:
Smart High-Side Switch, Overcurrent Protection, Diagnostic Feedback, Low RDS(on), Automotive Grade
