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TPS92518

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42-V Dual buck LED controller with SPI interface, analog and PWM dimming

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Data sheet

TPS92518

ACTIVE
Data sheet Order now

Product details

Input voltage type DC/DC Topology Buck Vin (min) (V) 6.5 Vin (max) (V) 42 Vout (max) (V) 39 Vout (min) (V) 0 Iout (max) (A) 5 Iq (typ) (mA) 3 Features High Output Accuracy, Precision Dimming Control, Thermal shutdown Operating temperature range (°C) -40 to 125 Dimming method Analog, PWM Number of channels 2 Rating Catalog
Input voltage type DC/DC Topology Buck Vin (min) (V) 6.5 Vin (max) (V) 42 Vout (max) (V) 39 Vout (min) (V) 0 Iout (max) (A) 5 Iq (typ) (mA) 3 Features High Output Accuracy, Precision Dimming Control, Thermal shutdown Operating temperature range (°C) -40 to 125 Dimming method Analog, PWM Number of channels 2 Rating Catalog
HTSSOP (PWP) 24 49.92 mm² 7.8 x 6.4
  • 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
  • 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

The TPS92518 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 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 device has an input range up to 42 V. The TPS92518HV is a high-voltage option with an input range up to 65 V.

The TPS92518 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 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 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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Technical documentation

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* Data sheet TPS92518 65-V Dual Buck LED Controller with SPI Interface datasheet 18 May 2017
EVM User's guide TPS92518EVM Dual Buck Controller Evaluation Module (Rev. D) PDF | HTML 15 Oct 2020
Technical article Dimming in switched-mode LED drivers PDF | HTML 13 Aug 2018

Design & development

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Evaluation board

LEDSPIMCUEVM-879 — MCU Control board for use with TPS92518EVM-878 board

LEDSPIMCUEVM-879 is the MCU control board for the TPS92518 evaluation module (TPS92518EVM-878). This board is the companion board which enables software based controls using the TPS92518 demonstration kit software package provides a computer-based graphical user interface (GUI). This board allows (...)

User guide: PDF | HTML
Not available on TI.com
Evaluation board

TPS92518EVM-878 — Dual buck LED driver evaluation board with SPI interface

The TPS92518EVM-878 features a two channel high-brightness LED current regulator based on the TPS92518 dual buck LED controller device. It is designed to operate with an input voltage from 6.5 V to 65 V. The EVM is set-up for default output currents of 550-mA/channel supporting any number of LEDs (...)

User guide: PDF | HTML
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Simulation model

TPS92518 PSpice Transient Model (Rev. B)

SLUM573B.ZIP (2834 KB) - PSpice Model
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Simulation model

TPS92518 TINA-TI Reference Design (Rev. A)

SLUM578A.TSC (181 KB) - TINA-TI Reference Design
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Simulation model

TPS92518 TINA-TI Transient Spice Model (Rev. B)

SLUM576B.ZIP (93 KB) - TINA-TI Spice Model
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Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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