Texas Instruments TPS92663A-Q1 High-Brightness LED Matrix Manager
Texas Instruments TPS92663A-Q1 High-Brightness LED Matrix Manager enables fully dynamic adaptive lighting solutions by providing individual pixel-level LED control. The device includes two sub-strings of three series-connected integrated switches for bypassing individual LEDs. The individual sub-strings allow the device to accept single or multiple current sources. It also allows a parallel connection of two switches to bypass high-current LEDs.
A primary microcontroller controls and manages the Texas Instruments TPS92663A-Q1 devices via a multi-drop universal asynchronous receiver transmitter (UART) serial interface. The serial interface supports CAN transceivers for a more robust physical layer. An application may use the TPS92663A-Q1 device and the TPS92662A-Q1 device on the same bus. An on-device, 8-bit ADC with two multiplexed inputs can be used for system temperature compensation and to measure a binning value, allowing LED binning and coding.
The internal charge pump rail supplies the gate drive voltage for the LED bypass switches. The bypass switch's low on-resistance (RDS(on)) minimizes conduction loss and power dissipation. The phase shift and pulse width for each LED in the string are programmable. The device uses an internal register to adjust the PWM frequency. Multiple devices can be synchronized. The switch transitions during PWM dimming operation have a programmable slew rate to mitigate EMI concerns. The device features open LED protection with a programmable threshold. The serial interface reports open LED or short LED faults.
Features
- AEC-Q100 qualified for automotive applications
- –40°C to 125°C TA device temperature grade 1
- H1C device HBM classification level
- C5 device CDM classification level
- 4.5V to 60V input voltage range
- Six integrated bypass switches
- Two sub-strings of three series switches
- 20V (max.) across the switch
- 62V (max.) switch to GND
- Multi-drop UART communication interface
- Up to 16 addressable devices
- Integrates on the same bus with TPS92662A-Q1
- Compatible with CAN physical layer
- Minimum number of wires in cable harness
- 8-bit ADC with two MUX inputs
- Crystal oscillator driver
- Programmable 10-bit PWM dimming
- Individual phase shift and pulse width
- Device-to-device synchronization
- LED open and short detection and protection
Applications
- Automotive headlight systems
- High-brightness LED matrix systems
- ADB or glare-free high-beam
- Sequential turn and animated daytime running lights
Simplified Application
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