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Product details

Parameters

Topology Boost Controller, Buck Controller, Buck-Boost Controller, Cuk Controller, Flyback Controller, Sepic Controller Channels (#) 1 Vin (Min) (V) 4.5 Vin (Max) (V) 65 Vout (Min) (V) 3 Vout (Max) (V) 65 Iout (Max) (A) 5 Iq (Typ) (mA) 1.8 LED current per channel (mA) 5000 Switching frequency (Max) (kHz) 800 Operating temperature range (C) -40 to 125 Features Adjustable Switch Frequency, Fault Detection, LED Open Detection, LED Short to Ground Detection, Precision Dimming Control, Soft Start, Spread Spectrum, Synchronization Pin, Thermal Shutdown Applications Adaptive Headlamp, Daytime Running, Fog, Headlamp, Position, Stop/Tail, Turn Rating Automotive open-in-new Find other Automotive LED drivers

Package | Pins | Size

HTSSOP (PWP) 20 42 mm² 6.5 x 6.4 open-in-new Find other Automotive LED drivers

Features

  • Wide Input Voltage: 4.5 V to 65 V
  • Better than ± 4% LED Current Accuracy over –40°C to 150°C Junction Temperature Range
  • Spread Spectrum Frequency Modulation for Improved EMI
  • Comprehensive Fault Protection Circuitry with Current Monitor output and Open Drain Fault Flag Indicator
  • Internal Analog Voltage to PWM Duty Cycle Generator for stand-alone Dimming Operation
  • Compatible with Direct PWM Input with over 1000:1 Dimming Range
  • Analog LED Current Adjust Input (IADJ) with over 15:1 Contrast Ratio
  • Integrated P-Channel Driver to enable Series FET Dimming and LED Protection
  • TPS92692-Q1: Automotive Q100 Grade 1 Qualified

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Description

The TPS92692 and TPS92692-Q1 are high accuracy peak current mode based controllers designed to support step-up/down LED driver topologies. The device incorporates a rail-to-rail current amplifier to measure LED current and spread spectrum frequency modulation technique for improved EMI performance.

This high performance LED controller can independently modulate LED current using either analog or PWM dimming techniques. Linear analog dimming response with over 15:1 range is obtained by varying the voltage across the high impedance analog adjust (IADJ) input. PWM dimming of LED current is achieved by directly modulating the DIM/PWM input pin with the desired duty cycle or by enabling the internal PWM generator circuit. The PWM generator translates the DC voltage at DIM/PWM pin to corresponding duty cycle by comparing it to the internal triangle wave generator. The optional PDRV gate driver output can be used to drive an external P-Channel series MOSFET.

The TPS92692 and TPS92692-Q1 devices support continuous LED status check through the current monitor (IMON) output. The devices also include an open drain fault indicator output to indicate LED overcurrent, output overvoltage and output undervoltage conditions.

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Technical documentation

= Top documentation for this product selected by TI
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Type Title Date
* Datasheet TPS92692, TPS92692-Q1 High Accuracy LED Controller With Spread Spectrum Frequency Modulation datasheet Mar. 08, 2017
Application notes Analog Thermal Foldback With LED Drivers Jun. 10, 2020
Technical articles Designing daytime running lights, part 2: responding to an LED fault Dec. 06, 2018
Technical articles Designing daytime running lights, part 1: adding one-fail-all-fail LED fault detection Dec. 04, 2018
White papers LED Drivers for Automotive Exterior Applications (Rev. B) Mar. 27, 2018
Selection guides 汽车外部照明应用的LED驱动器 Mar. 15, 2018
User guides TPS92692 Boost and Boost-to-Battery LED Driver Evaluation Board Mar. 10, 2017
Technical articles Here's how body electronics and lighting technology are changing the driving experience Sep. 26, 2016
Technical articles LED brightness adjustment: high-frequency PWM dimming Aug. 26, 2016

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARDS Download
document-generic User guide
75
Description

The TPS92692EVM-880 is a fully assembled and tested LED driver that can be configured as either a Boost or a Boost-to-Battery topology to power a single string of series connected LEDs. Acurate closed-loop LED current regulation is achieved using a low-offset rail-to-rail current sense amplifier (...)

Features
  • Versatile LED driver capable of driving a string of 1 to 20 series connected white LEDs
  • Wide input voltage range (4.5 V to 18 V): Supports automotive start-stop and load dump transients up to 65 Vmax
  • Better than +/-4% LED current regulation using high-side current sense resistor
  • Internal analog voltage (...)

Design tools & simulation

SIMULATION MODELS Download
SLVMC05A.ZIP (121 KB) - PSpice Model
SIMULATION TOOLS Download
PSpice® for TI design and simulation tool
PSPICE-FOR-TI — 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 (...)
Features
  • Leverages Cadence PSpice Technology
  • Preinstalled library with a suite of digital models to enable worst-case timing analysis
  • Dynamic updates ensure you have access to most current device models
  • Optimized for simulation speed without loss of accuracy
  • Supports simultaneous analysis of multiple products
  • (...)
CALCULATION TOOLS Download
SLVC686.ZIP (123 KB)
CALCULATION TOOLS Download
SLVC687.ZIP (259 KB)

Reference designs

REFERENCE DESIGNS Download
55-W Dual Buck-Boost LED Driver Reference Design for Automotive High and Low Beam Headlight
TIDA-050002 — This reference design describes a TPS92692-Q1 LED driver in a dual, high-beam and low-beam application with a single controller and power stage. The design operates in boost mode to provide the high beam and in boost to battery mode to provide the low beam. The single controller power stage design (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Automotive Daytime Running Light Dual String LED Driver Reference Design with Current Balancing
TIDA-01581 — This reference design is a dual string LED driver that implements an operational amplifier based circuit which balances the current in two LED rings. The operational amplifier circuit senses current in a reference string and uses feedback from a mirrored string to bias a MOSFET that regulates the (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

Package Pins Download
HTSSOP (PWP) 20 View options

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