TI introduces industry's first fully integrated LED matrix manager for adaptive automotive headlight systems

Texas Instruments TPS92661-Q1

Compact, scalable solution reduces board space by 73 percent, controls up to 96 high-brightness LEDs in innovative headlamps

Texas Instruments (TI) introduced the industry's first fully integrated high-brightness LED matrix manager IC 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.

TI demonstrated the TPS92661-Q1 at the SAE Convergence Conference and Exhibition in Detroit, Mich., Oct. 21-22.

TI introduces industry's first fully integrated LED matrix manager for adaptive automotive headlight systems

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 and 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 TPS92661-Q1 replaces this complex design, reducing board space by 73-percent, and enables 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

  • Controls up to 96 LEDs from a single serial port for headlamp beam forming and directional control.
  • 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.
  • 12 Series LED Bypass Switches
  • Programmable 10-bit PWM Dimming
    • Individual Turn-on and Turn-off Times
    • Inherent Phase Shift Capability
    • Device-to-Device Synchronization
  • LED Open/Short Detection and Protection
    • Fault ReportingAEC-Q100 Grade 1
  • 48-pin, TQFP, Exposed Pad Package

Availability, packaging and pricing
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.

LED lighting tools and support
Order the TPS92661EVM-001 evaluation module for exterior automotive lighting that demonstrates the individual PWM dimming control of each LED.


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