TPS92518-Q1 Datasheet, PDF (1/7 Pages) Texas Instruments – Automotive Dual Channel Buck LED Controller with SPI Interface, Analog and PWM Dimming

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TPS92518-Q1
SLUSCZ0 – MAY 2017
TPS92518-Q1 Automotive Dual Channel Buck LED Controller with SPI Interface,
Analog and PWM Dimming
1 Features
•1 AEC-Q100 Qualified for Automotive Applications
– Grade 1: –40°C to 125°C Ambient Operating
Temperature
– Device HBM Classification Level H2
– Device CDM Classification Level C5
• Wide Input Voltage Range 6.5 V to 65 V
• Two independent Buck LED Controllers
– High Bandwidth, Quasi-Hysteretic Control
– Adjustable High-Side Sense
– Direct PWM Dimming Input
– Cycle-by-Cycle Current Limit
• SPI Communications Interface
– Software configurable Set Points (8-bit)
– Digital Calibration and Binning
– Fault Monitoring and Reporting
• Advanced, High Precision Dimming
– 10,000:1 PWM Dimming Range
– 255:1 Analog Dimming Range
– High Frequency Shunt FET Dimming
2 Applications
• Automotive LED Lighting: High and Low Beam,
DRL, Turn, Position
• Constant Current LED Driver
• Switched Matrix Headlamps
• AFS Headlamps
• LED General Lighting
3 Description
The TPS92518-Q1 family of parts are dual channel
buck LED current controllers with a SPI
communications interface. The serial communication
interface provides a singular communication path for
multichannel and platform lighting driver module
(LDM) applications.
The TPS92518-Q1 uses a quasi-hysteretic control
method that supports switching frequencies ranging
from 1 kHz to 2 MHz. This control method enables
superior, high frequency shunt FET dimming and also
handles the demanding dynamic loads of adaptive
LED matrix based headlamp systems.
Software programmable SPI set points (Precision
Peak Current, Controlled Off-Time and Output
Voltage Sense) enables designers to develop a single
LED driver solution for multiple load configurations
that can be quickly reconfigured for future LED driver
design requirements.
The TPS92518-Q1 device has an input range up to
42 V. The TPS92518HV-Q1 is a high-voltage option
with an input range up to 65 V.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TPS92518-Q1
TPS92518HV-Q1
HTSSOP (24)
7.7 mm x 4.4 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Simplified Schematic
Battery or Boost
Regulator
Input Voltage
EN/UV
µC
PWM1
PWM2
x Peak
x Off time
x Enable
SPI
x Faults
x Temp
VLED1
TPS92518
Input Voltage
VLED2
MCU
Copyright © 2017, Texas Instruments Incorporated
VCC
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.