Dynamic taillight offers individual options for design and safety
Semiconductor manufacturer Elmos SE (Dortmung, Germany) expands its product offering of automotive LED semiconductor solutions with a new stand-alone driver chip that cost-effectively enables new lighting options for vehicle tail lights. With an integrated non-volatile memory, the E522.88 can store individual channel current configurations and animation sequences. An external microcontroller is not required – this significantly reduces the cost of the LED control unit.
The E522.88 is designed according to the Functional Safety Standard ISO26262. According to the manufacturer, it is the industry’s first stand-alone multi-channel LED controller that provides a comprehensive set of diagnostics to obtain a system-level ASIL-B safety rating without using a micro-controller. The LED controller has 16 channels and drives a maximum output current of 100 mA per channel. It supports Elmos’ patented power management methodology that enables a wide supply voltage range and ensures constant high light intensity of the LEDs. If higher currents are required, the channels can be combined to support this demand. Animation sequences can then be programmed at the end by the customer and triggered by separate signals in the application.
“The development of the E522.88 controller is an important step for Elmos in expanding our range of multi-channel LED drivers for taillights. It demonstrates our constant commitment to deliver maximum added value to our customers at optimised system cost. The E522.88 enables OEMs to realise animated taillight systems that outperform other premium models,” says Jatin Thaker, Segment Manager Lighting, Elmos Semiconductor SE.