Family Approach For Front Door Modules
The actuator drivers designed by ST for automotive door zone applications are characterized by a scalable actuator driving concept, compatible with package and software, to satisfy the multiplicity of door electronics variants today. The drivers support all regular door zone loads such as door lock motors, mirror folder and leveling, defroster, and several lighting functions from LEDs to incandescent bulbs.
L9952 is a sophisticated power management device, enabling the application to achieve a very low quiescent current. Control and diagnostics for all devices are managed via a serial peripheral interface (SPI). They are available in small power packages, offering superior thermal performance – ideal for compact and lightweight systems. The actuator drivers L9950, L9953 and L9954 are interchangeable, based on a common PC-board layout and wiring. This allows to use a unique PC-board design for the entire door zone module for a car. Even for software driving via an SPI interface, a modular structure valid for all actuator drivers is realizable.