Infineon IPD70R1K4P7SAUMA1: A 70 mΩ Single Channel High Side Switch for Demanding Automotive Applications

The Infineon IPD70R1K4P7SAUMA1 represents a significant advancement in power switching technology, specifically engineered for the rigorous demands of modern automotive electronic systems. As a single channel high side switch built on Infineon's proven SMART7 technology platform, this device integrates a vertical N-channel power MOSFET with a nominal on-state resistance of just 70 mΩ. This exceptionally low RDS(on) is a key performance differentiator, enabling highly efficient operation by minimizing conduction losses and reducing heat generation, which is critical in the thermally challenging under-the-hood environment.

This high side switch is designed to control a wide array of resistive, inductive, and capacitive loads, such as solenoids, valves, motors, and lamps. Its integrated protection and diagnostic features are paramount for ensuring system reliability. The device offers comprehensive safeguards including overload and active current limitation, overtemperature shutdown, and protection against electrostatic discharge (ESD). Furthermore, it provides detailed diagnostic feedback to the microcontroller, such as open-load detection both in on-state and off-state, and short-circuit flags, which are essential for functional safety and predictive maintenance.

Housed in a robust PG-TSDSO-14 package, the component offers excellent thermal performance and is qualified for the harsh automotive environment, adhering to the AEC-Q100 standard. Its ability to operate over a wide voltage range and its very low standby current make it an ideal choice for 12V and 24V battery-fed systems, contributing to lower overall energy consumption and supporting the automotive industry's move towards higher efficiency.

ICGOOODFIND: The Infineon IPD70R1K4P7SAUMA1 stands out as a highly integrated, robust, and efficient solution for automotive power management. Its combination of ultra-low on-resistance, extensive diagnostic capabilities, and robust protective features makes it an exceptional choice for designers aiming to enhance the reliability, efficiency, and intelligence of their electronic control units (ECUs).

Keywords: High Side Switch, 70 mΩ RDS(on), Automotive Grade, Integrated Protection, Diagnostic Features