Today, more and more automotive systems, such as electronic power steering (EPS), transmission control units (TCU), and advanced braking systems (ABS), are required to meet the requirements of ASIL-D, the highest automotive safety integrity level prescribed in the ISO 26262 functional safety standards. In pursuit of this, Allegro has unveiled a new automotive power management chip compliant to the ASIL-D specification.
Target applications include automotive control modules for: Electronic Power Steering (EPS), Transmission Control Units (TCU), Advanced Braking Systems (ABS), Emissions Control Modules, and other automotive applications.
The ARG82800 is an ASIL-D PMIC for automotive control units, providing 4 power rails for uC/DSP, sensors, CAN, memory, and other loads in the system. It includes a unique buck-boost (or buck) pre-regulator which is valuable for low Vbatt idle-stop requirements while continuing to provide 5 V output.
“A key feature is the integration of 4x High-Side gate drivers, typically used for battery disconnect and 3x phase disconnect in EPS systems. This can eliminate external component(s)/IC package, saving BOM cost and reducing PCB footprint”, claimed the company.
The ARG82800 is supplied in a low-profile (1.2 mm maximum height) 38-lead eTSSOP package (suffix “LV”) with exposed power pad for enhanced thermal performance. It is priced at $4.49 in quantities of 1,000.
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