Texas Instruments TPS92401 LED Dot-Controllers

Texas Instruments TPS92401 LED Dot-Controllers are 4-channel, 5A LED devices with integrated PWM shunt FETs, an SPI interface, and an adaptive configuration. These LED drivers include a string of 4 series-connected integrated shunt FETs, each of which provides PWM dimming for an individual LED. The TPS92401 dot-controllers include an internal oscillator for a system clock to enable an integrated PWM generator up to 16-bit with programmable PWM frequency up to 60kHz. These LED dot controllers provide PWM dimming control of constant current regulators and enable multi-channel power saving to increase dimming efficiency in low brightness conditions. The TPS92401 devices are ideal for stage and photography lighting, surgical lighting, machine vision and IP camera LED array, cold/warm WLED lighting, 3D printing, and industrial transportation applications.

Features

  • 4.5V to 65V wide input voltage range
  • LED common anode or cathode connection
  • 4 integrated PWM shunt FETs:
    • 5A FET maximum continuous current
    • Internal 32MHz oscillator for PWM generator
    • Programmable 16-bit, >20kHz PWM dimming
  • SPI interface and adaptive configuration:
    • Up to 5MHz SPI clock for data transfer
    • Star and daisy chain connection
    • Stacking up to 4 devices for 16-LED string
  • Enhanced EMI performance:
    • Programmable PWM slew rate
    • Programmable PWM edge shift
    • Internal charge pump with spread spectrum
  • Full protection features:
    • LED open detection and protection
    • LED short detection
    • Shunt FET open detection
    • Programmable LED open-voltage
    • Thermal warning
  • Optional power save mode:
    • PWM output to control LED drivers
    • Low-power standby mode
  • VQFN-36 package

Applications

  • Stage and photography lighting
  • Surgical lighting
  • Machine vision and IP camera LED array
  • Cold/warm WLED lighting
  • 3D printing
  • Industrial transportation

Application Circuit

Application Circuit Diagram - Texas Instruments TPS92401 LED Dot-Controllers
Publicado: 2025-01-08 | Actualizado: 2025-01-28