embedded world: Freescale introduces intelligent sensor for car battery monitoring
Freescale Semiconductor has launched the MM912J637 intelligent battery sensor for automotive applications. Designed to measure the voltage, current and temperature of lead acid batteries and calculate battery state in harsh automotive conditions, Freescale claims it offers a rugged and cost effective solution for designers in a small 7 x7mm QFN package.
"With the rise in electrical content in hybrid and electric vehicles and the advent of the start stop systems, it's crucial to be able to accurately monitor a vehicle's battery at all times, especially under tough automotive conditions," said Gavin Woods, vice president and general manager of Freescale's Analogue, Mixed Signal and Power division. "We are providing the industry's first fully automotive qualified and cost effective solution which helps to ensure precise monitoring of important battery parameters."
The device integrates a S12 microcontroller and a SMARTMOS analogue control integrated circuit to enable significant reduction of board space. It is designed to meet the highest automotive standards for electrostatic discharge, electromagnetic compatibility and zero defect quality levels and is fully AEC-Q100 automotive qualified for operation from -40 to 125°C.
