Integrated LED for headlight systems.

17 October 2014

TI introduces the first fully integrated LED matrix manager for adaptive automotive headlight systems.

The TPS92661-Q1 is a compact, scalable solution that enables automobile manufacturers to create innovative LED headlamps that vary beam patterns and intensity dynamically for optimum roadway illumination and enhanced driver safety. It reduces board space by 73 per cent and controls up to 96 per cent of high-brightness LEDs in innovative headlamps.

Featured in premium vehicles today and proliferating into mainstream models in the coming years, adaptive headlamp systems automatically manage the direction and intensity of high and low beams. The TPS92661-Q1 is a compact solution for shunt FET dimming arrays of high-brightness LEDs. This includes 12 individually controlled MOSFET switches to steer current through or around the connected LEDs, thereby providing individual pixel-level light adjustment. A serial communication port facilitates control and diagnostic functions from a master microcontroller, such as TI’s AEC-Q100-qualified C2000 Piccolo.

Until now, headlamp beam forming and directional control in an adaptive headlamp design required considerable board space to house bulky discrete circuits, including multiple transistors, gate drivers and glue logic. A single solution replaces this complex design, enabling a headlamp system that is completely solid state with no moving parts that can wear out, such as motors or actuators.

 Key features and benefits of TPS92661-Q1

• Individual 10-bit pulse-width modulation (PWM) brightness control LED for pixel-level light intensity adjustment.
• LED open/short fault diagnostics and reporting alerts driver via the master microcontroller in the event of headlamp failures or damage.

Available now in volume from TI and its authorized distributors, the TPS92661-Q1 is offered in a 48-pin HTQFP package and is priced at US$3.70 each in 1,000-unit quantities.
The TPS92661-Q1 is at the SAE Convergence Conference and Exhibition in Detroit, Mich., Oct. 21-22.

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