1 Introduction

Traditionally, the 4-wheeler automotive systems use 12V supply across body, ADAS, infotainment subsystems. However, the adoption of 48V is increasing, driven from improved efficiency, lower system cost, savings in copper wiring, reduction in overall size and weight and enable lower emissions while still being in the low voltage (48V) design, without the need of stringent high voltage safety requirements. The 48V supply is widely used in industrial applications like factory automation, robotics, medical, server and telecom applications. The residential and commercial Heating, Ventilation and Air Conditioning (HVAC) systems use 24V AC supply for light loads like thermostats, valves etc. These applications typically consist of Microcontroller Units (MCUs) with BLDC motor control algorithm, MOSFETs for H-bridges, gate drivers for controlling the turn-on/turn-off of the MOSFETS, sensing circuitry for real-time sensing of motor phase currents or rotor position, LDOs and system-level protection functions. These designs often need compact and precise BLDC drives to enable integration of electronics into the motor, reducing system cost and to achieve higher system efficiency.