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PMIC packs fail-safe functionality for automotives

Posted: 01 Dec 2009 ?? ?Print Version ?Bookmark and Share

Keywords:power management? PMIC? car battery? automotive?


STMicroelectronics has developed the L99PM62XP power management chip for car body applications that help reduce stand-by current consumption. The PMIC also provides comprehensive fail-safe functionality with reduced external components and optimized overall system cost. The chip is timely now that the number of power-consuming products in the car is continuously increasing.

Minimizing quiescent current consumption in today's automotive electronic modules is critical for preserving the energy stored in the car battery. ST's L99PM62XP advanced power-management IC (PMIC) provides a dedicated regulator with optimized dynamic behavior, enabling periodic system activation to monitor configurable wake-up sources, coupled with comprehensive diagnostic and system-status features.

Addressing increasing system complexity, ST's new device integrates advanced fail-safe functionality to improve the sustainability and reliability of automotive electronic control units. The intrinsic fail-safe concept, including supervision of the microcontroller, supply voltages and temperatures, prevents the system from locking up under all imaginable failure conditions.

The integration of cost-efficient peripheral functions, such as high-side and low-side gate drivers, operational amplifiers and auxiliary regulators, reduces the number of external components, optimizing overall system cost.

The L99PM62XP offers compatibility with both LIN and high-speed CAN automotive communication protocols for increased performance and versatility.

ST's PMIC targets MCU-based automotive applications such as door modules, body control units and mechatronic subsystems.

The L99PM62XP is in production, with unit pricing of $2 for volumes in the range of 1,000 pieces.

For application notes on power managementclick here.

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