Automotive Satellite Camera Power Distribution Reference Design Using onsemi’s NCV760040

This reference design demonstrates how to implement automotive satellite camera power distribution using onsemi's NCV760040 IC, focusing on safety features for ADAS such as under/over-voltage protection and ASIL-C readiness for ISO26262 compliance. It details the implementation of ADAS power management, including a SEPIC circuit for stable 12 V output. The design also covers circuit specifications, efficiency measurements, and ripple analysis to ensure stable power supply performance in automotive ADAS applications.

Advantages of Zonal Power Distribution

Introduction to onsemi’s Reference Design for ADAS Power Management

Deep Dive into Quad High-Side Switch

Single-Ended Primary-Inductor Converter (SEPIC) Circuit

Reverse Battery Protection (RBP)

PCB Design and Comments

Comprehensive System Schematic and Bill of Materials

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.