High-Side SmartFETs with Analog Current Sense

This application note describes the structure and design philosophy of onsemi High-Side SmartFETs, and provides specific examples and numerical calculations of how to apply SmartFETs with analog current sense into your system to achieve the optimal switching performance.

Application System Overview

Power FET and Protection

Application Interface and Control

Switching Characteristics

Current Sense and Diagnostics

Understanding the Thermal Network

Application Note

With the shift from a domain control model to zonal control, automotive electronics require a higher level of integration of components to conserve space, reduce cost, and improve reliability. SmartFETs with protection features have a variety of applications and benefits that can enable greater flexibility and versatility into your automotive designs. This application note describes the structure and design philosophy of onsemi High-Side SmartFETs, and provides specific examples and numerical calculations of how to apply SmartFETs with analog current sense into your system to achieve the optimal switching performance.