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TPS92518
SLUSCR7 –MAY 2017
TPS92518 Dual Channel Buck LED Controller with SPI Interface,
Analog and PWM Dimming
1 Features
3 Description
The TPS92518 family of parts are dual channel buck
LED current controllers with a SPI communications
interface. The serial communication interface
1
•
•
Wide Input Voltage Range 6.5 V to 65 V
Two independent Buck LED Controllers
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High Bandwidth, Quasi-Hysteretic Control
Adjustable High-Side Sense
provides
a
singular communication path for
multichannel and platform lighting driver module
(LDM) applications.
Direct PWM Dimming Input
The TPS92518 uses
a quasi-hysteretic control
Cycle-by-Cycle Current Limit
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.
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•
SPI Communications Interface
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Software configurable Set Points (8-bit)
Digital Calibration and Binning
Fault Monitoring and Reporting
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.
Advanced, High Precision Dimming
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10,000:1 PWM Dimming Range
255:1 Analog Dimming Range
High Frequency Shunt FET Dimming
2 Applications
The TPS92518 device has an input range up to 42 V.
The TPS92518HV is a high-voltage option with an
input range up to 65 V.
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Color Mixing Applications
Aftermarket Lighting Applications
LED General Lighting
Device Information(1)
Projector Applications
PART NUMBER
TPS92518
PACKAGE
BODY SIZE (NOM)
HTSSOP (24)
7.7 mm x 4.4 mm
TPS92518HV
(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
VLED1
PWM1
PWM2
µC
TPS92518
Input Voltage
VLED2
ñ Peak
ñ Off time
ñ Enable
ñ Faults
ñ Temp
SPI
Copyright © 2017, Texas Instruments Incorporated
MCU
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.