Volver a STMicroelectronics

STMicroelectronics STLUX Digital LED Lighting Drivers

STMicroelectronics STLUX™ Digital LED Lighting Drivers are tailored for lighting and power conversion. The STLUX series integrates a digital addressable lighting interface (DALI) for remote control and monitoring and has been successfully integrated into a wide range of architectures and applications. STMicroelectronics STLUX programmable controllers are specifically optimized for lighting applications. The innovative state-machine, event-driven (SMED) digital technology and integrated microcontroller make the STLUX series easily programmable and versatile. The controllers can be configured with application-specific algorithms to optimize the overall system efficiency, enabling high-performance and cost-effective lighting design.

SMED

SMED is a hardware state machine triggered by internal or external events. In power-supply applications, for example, a SMED can close the regulation loop and automatically switch off the circuit when it detects an overcurrent or a short circuit, protecting the circuit. Because the SMED is embedded, they guarantee an event reaction time shorter than that provided by standard interrupt-driven microprocessors.

Features

  • 6 SMED-controlled PWMs to provide full control of any power conversion stage (SMED)
  • Integrated DALI enabling control, communication, and monitoring functions
  • Integrated digital core makes STLUX easy to use and programmable
  • Customizable and load-tailored algorithms ensure high efficiency
  • Fault detector improves reliability
  • Single-chip solution saves space compared to discrete solutions
  • Simple buck converters for LED driving
  • Boost for power factor correction
  • Half-bridge resonant converters for dimmable LED strings
  • Full-bridge control in HID lamp ballasts
  • Wireless power chargers
  • TV power supplies 

Applications

  • Simple buck converters for LED driving
  • Boost for power factor correction
  • Half-bridge resonant converters for dimmable LED strings
  • Full-bridge control in HID lamps ballasts
  • Wireless power chargers
  • TV power supplies

Specifications

  • 4 analog comparators
  • 8 analog-to-digital converters (ADC)
  • Integrated microcontroller with advanced STM8 core with
  • Harvard architecture and 3-stage pipeline
  • Flash and E2PROM with read while write (RWW) and error correction code (ECC)
  • Program memory: 32Kbytes flash; data retention 15 years at 85°C after 10kcycles at 25°C
  • Data memory: 1Kbyte true data E2PROM; data retention: 15 years at 85°C after 100k cycles at 85°C
  • RAM: 2Kbytes
  • ROM: 2Kbytes
  • Internal 96MHz PLL clock management
  • System and auxiliary timers
  • IWDG/WWDG watchdog, AWU, ITC
  • Multiple low-power modes (wait, slow, auto-wakeup, halt) with user-definable clock gating
  • Low consumption power-on and power-down reset
  • 12 multi-function bidirectional GPIO with highly robust design, immune against current injection
  • 6 fast digital input DIGIN, with configurable pull-up
  • UART asynchronous with SW flow-control
  • I2C master/slave fast-slow speed rate
  • -40°C to +105°C operating temperature range

Additional Resources

Development Tool

The STEVAL-ILL075V1 Evaluation Board is designed to help familiarize the user with the STLUX family of digital controllers and SMED architecture. A convenient GUI enables the user to quickly generate the optimal SMED configuration for the application. The external pins make it easy to inject SMED events and capture the SMED-controlled PWM clock, helping the user to validate the SMED configuration. Alternatively, the application circuit can be driven directly from the evaluation board.

Publicado: 2013-07-18 | Actualizado: 2022-03-11