TPS92691EVM-752

TPS92691-Q1 Boost and Boost-to-Battery LED Driver Evaluation Board

TPS92691EVM-752

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Overview

The TPS92691EVM-752 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. Accurate closed-loop LED current regulation is achieved using a low-offset rail-to-rail current-sense amplifier along with high-side current-sensing implementation. DC LED current set point can be varied over a 15:1 ratio using the high-impedance analog adjust (IADJ) input. An integrated gate driver circuit and proprietary PWM dimming logic are incorporated to enable external series P-channel MOSFET PWM dimming with greater than 100:1 dimming ratio.

LED short-circuit failure and other cable-harness fault detection is facilitated by a current monitor output (IMON), which reports the instantaneous status of LED current measured by the rail-to-rail current-sense amplifier. The current-monitor output can be used in conjunction with microcontroller or discrete circuitry to implement a customized fault-protection scheme based on the lighting application and circuit topology.

 

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 +/-3% LED current regulation at room temperature using high-side current-sense resistor 
  • Simple circuit interface to set LED current reference and PWM duty cycle
  • Instantaneous current-monitor output facilitates LED fault detection and mitigation
Automotive LED drivers
TPS92691-Q1 Automotive multi-topology LED driver with rail-to-rail current sense amplifier

 

Illumination LED drivers
TPS92691 TPS92691 multi-topology LED driver with rail-to-rail current sense amplifier

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Evaluation board

TPS92691EVM-752 – TPS92691-Q1 Boost and Boost-to-Battery LED Driver Evaluation Board

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Technical documentation

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Type Title Date
* User guide TPS92691 Boost and Boost-to-Battery LED Driver Evaluation Board Mar. 11, 2016
Certificate TPS92691EVM-752 EU Declaration of Conformity (DoC) Jan. 02, 2019
Data sheet TPS92691/-Q1 Multi-Topology LED Driver With Rail-to-Rail Current Sense Amplifier datasheet Dec. 11, 2015

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