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PMIC trims stand-by current consumption in cars

Posted: 01 Dec 2009     Print Version  Bookmark and Share

Keywords:power management  PMIC  car battery  automotive 


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

Minimising 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 optimised dynamic behaviour, 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, optimising 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 sub-systems.

The L99PM62XP is in production, with unit pricing of Rs. 97.63 ($2) for volumes in the range of 1,000 pieces.

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