Dallas, Tex. -- Texas Instruments (TI) has claimed the industry's first fully integrated high-brightness LED matrix manager IC for adaptive automotive headlight systems. The TPS92661-Q1 is a compact solution that is said to reduce board space by 73 percent and control up to 96 high-brightness LEDs in headlamps.
A single TPS92661-Q1 replaces bulky discrete circuits, including multiple transistors, gate drivers and glue logic, which have typically been required to handle headlamp beam forming and directional control in an adaptive headlamp design. This enables a headlamp system that is completely solid state with no moving parts that can wear out, such as motors or actuators, said TI. It also enables automobile manufacturers to create innovative LED headlamps that vary beam patterns and intensity dynamically for optimum roadway illumination and enhanced driver safety, said the company.
Adaptive headlamp systems, primarily used today in premium vehicles, automatically manage the direction and intensity of high and low beams. The TPS92661-Q1 is used 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, said TI. A serial communication port facilitates control and diagnostic functions from a master microcontroller, such as TI's AEC-Q100-qualified C2000 Piccolo™. The TPS92661-Q1 is offered in a 48-pin HTQFP package.
- 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.
Availability: Available now in volume from TI and its authorized distributors.
Pricing: $3.70 each in quantities of 1,000. Samples are available. Order the TPS92661EVM-001 evaluation module for exterior automotive lighting that demonstrates the individual PWM dimming control of each LED.