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Texas Instruments TPS92611-Q1 Single-Channel High-Side LED Driver

Texas Instruments TPS92611-Q1 Single-Channel High-Side LED Driver operates from an automotive car battery. The TPS92611-Q1 is a simple and elegant solution with LED diagnostics to deliver constant current for a single LED string. The device has a one-fails–all-fail feature that can work together with other LED drivers, such as the Texas Instruments TPS9261x-Q1, TPS9263x-Q1, and TPS9283x-Q1 devices, to address different requirements. With LEDs widely used in automotive applications, simple LED drivers are becoming more popular. Compared to discrete solutions, this low-cost monolithic solution lowers system-level component counts and significantly improves current accuracy and reliability.

Features

  • Qualified for automotive applications
  • AEC-Q100 qualified with the following results
    • Temperature Grade 1 (–40°C to 125°C ambient operating temperature range)
    • Device HBM ESD Classification Level H2
    • Device CDM ESD Classification Level C3B
  • Single channel constant-current LED driver with PWM dimming
  • 4.5V–40V wide input-voltage range 
  • Constant output current, adjustable by a sense resistor
  • Low dropout voltage (current-sense voltage drop included)
    • Maximum dropout: 150mV at 10mA
    • Maximum dropout: 400mV at 70mA
    • Maximum dropout: 700mV at 150mA
    • Maximum dropout: 1.3V at 300mA
  • Precision current regulation, tolerance ±4.6%
  • 300mA maximum current 
  • Heat sharing with an external resistor
  • Diagnostics and protection
    • LED open-circuit and short-circuit detection with auto-recovery
    • Diagnostic-enable with an adjustable threshold for low-dropout operation
    • Fault bus up to 15 devices, configurable as either one-fails–all-fail or only-failed-channel off
    • Low quiescent current and fault-mode current (< 250µA per device)
  • –40°C to 150°C operating junction temperature range 

Applications

  • Automotive convenience lighting: Dome light, door handles, reading lamp, and miscellaneous lamps
  • General-purpose LED driver application
  • Automotive rear lamp, center high-mounted stop lamp, side markers, blind-spot detection indicator, charging inlet indicator

Functional Block Diagram

Block Diagram - Texas Instruments TPS92611-Q1 Single-Channel High-Side LED Driver

Evaluation Module

Texas Instruments TPS92611EVM LED Driver Evaluation Module

Used to evaluate, control, and configure the TPS92611-Q1, a single-channel linear LED driver.

Learn Moreà propos de Texas Instruments TPS92611EVM LED Driver Evaluation Module View Productslié à Texas Instruments TPS92611EVM LED Driver Evaluation Module
Publié le: 2018-06-08 | Mis à jour le: 2023-02-15