1 Features

• AEC-Q100 qualified for automotive applications

– Grade 1: –40°C to 125°C ambient operating

temperature

– Device HBM classification level H1C

– Device CDM classification level C5

• Input voltage range: 4.5 V to 60 V

• 12 Integrated bypass switches

– Four sub-strings of three series switches

– 20-V maximum across switch

– 62-V maximum switch to ground

• Multi-drop UART communication interface

– Up to 31 addressable devices

• Compatible with CAN physical layer

– Minimum number of wires in cable harness

• Eight-bit ADC with two MUXed inputs

• Crystal oscillator driver

• External EEPROM I2C interface

• Programmable 10-bit PWM dimming

– Individual phase shift and pulse width

– Device-to-device synchronization

• LED open and short detection and protection

2 Applications

• Automotive headlight systems

• High-brightness LED matrix systems

• ADB or glare-free high beam

• Sequential turn and animated daytime running

lights

3 Description

The TPS92662-Q1 LED matrix manager device

enables fully dynamic adaptive lighting solutions by

providing individual pixel-level LED control.

The device includes four sub-strings of three

series-connected integrated switches for bypassing

individual LEDs. The individual sub-strings allow the

device to accept either single or multiple current

sources. It also allows paralleling up to four switches

for bypassing high current LEDs.

A master microcontroller is used to control and

manage the TPS92662-Q1 devices via a multi-drop

universal asynchronous receiver transmitter (UART)

serial interface. The serial interface supports the use

of CAN transceivers for a more robust physical layer.

The I2C communication interface can be used to read

from and write to an external EEPROM that can store

system calibration data.

An on-board 8-bit ADC with two multiplexed inputs

can be used for system temperature compensation

and used to measure a binning value which allows for

LED binning and coding.

The internal charge pump rail supplies the gate drive

voltage for the LED bypass switches. The low onresistance

(RDS(on)) of the bypass switch minimizes

conduction loss and power dissipation.

The phase shift and pulse width for each individual

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

programmable threshold. The serial interface reports

open LED or short LED faults.