Reference Design Overview

In this reference design, learn how to implement automotive satellite camera power distribution using onsemi’s NCV760040 IC. The design emphasizes safety features vital for ADAS, such as under/over-voltage protection, current sensing, over-temperature detection, and short/open-load detection, and highlights ASIL-C readiness for ISO26262 compliance.

Learn the details of the implementation and testing of ADAS power management, including the NCV760040 quad high-side switch for load control and Power-over-Coax (PoC) for transmitting data and power over a single cable. A SEPIC circuit, using the NCV8871 Boost Controller, provides a stable 12V output despite battery voltage variations. Specifications for both ICs are provided, including output current and on-resistance.

This reference design elaborates on the SEPIC circuit, covering duty cycle calculations, current stress, component selection, feedback loop, current sensing, and compensation. It includes formulas and tables for reference, alongside efficiency measurements, ripple analysis, and frequency response testing to ensure power supply stability and performance. Download this document to be your comprehensive guide for designing power management in automotive ADAS applications.