TPS92662-Q1 Datasheet, PDF (1/12 Pages) Texas Instruments – High-Brightness LED Matrix Manager for Automotive Headlight Systems

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TPS92662-Q1
SLUSD15 – JUNE 2017
TPS92662-Q1 High-Brightness LED Matrix Manager for Automotive Headlight Systems
1 Features
•1 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 GND
• 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
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 allows the
device to accept either single or multiple current
sources, as well as paralleling up to four switches for
bypassing high current LEDs.
The device contains a multi-drop universal
asynchronous receiver transmitter (UART) serial
interface for control and management by a master
microcontroller. 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
such as binning and coding.
The internal charge pump rail that can float up to 69
V above GND provides the LED bypass switch gate
drive supply. The low on-resistance (R_DS(on)) of the
bypass switch minimizes conduction loss and power
dissipation.
The phase-shift and pulse-width are programmable
for each individual LED in the string. The PWM
frequency is adjustable via an internal register and
multiple devices can be synchronized. In addition, the
switch transitions during PWM dimming operation
have a programmable slew rate limit to mitigate EMI
concerns.
The device features open LED protection with
programmable threshold as well as open and short
LED fault reporting via the serial interface.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS92662-Q1
PHP (48)
7.00 mm × 7.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Application
VBAT
BOOST BUCK
MCU
CAN
ECU
VIN
XTALI
CPPx
TPS92662
XTALO
BIN
ADCx
UART
CAN
I²C
E²
RX
TX
SDA
SCL
VDD VIO
LEDx
GND
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.