ST’s new family of STLUX ICs are programmable digital controllers that embed several fully-configurable SMED (state machine, event-driven), making STLUX flexible for any power conversion topology.
STLUX ICs are optimized for innovative lighting (LED and street lighting), wireless battery charger and digital power supply applications.
A dedicated power conversion algorithm can be programmed into the SMED in order to attain the best possible operating conditions for the chosen topology. This allows the application to reach higher efficiency compared to traditional solutions.
STLUX ICs also include a full set of protection circuits and communication interfaces. This provides a great gain in terms of design cycle and cost reduction.
STLUX385A, the first STLUX device on the market, integrates DALI (digital addressable lighting interface) for remote control and monitoring.
Features and benefits
- 6 SMED-controlled PWMs providing full control of any power conversion stage
- Integrated DALI enabling control, communication and monitoring functions
- Integrated digital core making STLUX easy to use and programmable
- New customizable and load-tailored algorithms ensuring very high efficiency
- Fault detector improving reliability
- Single-chip solution saving space when compared to discrete solutions
What is SMED?
SMED is a hardware state machine triggered by internal or external events. It is designed to replace and extend the functionalities of traditional analog architecture. 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, so protecting the circuit. Since SMEDs are embedded, they guarantee an event reaction time shorter than that provided by standard interrupt-driven microprocessors.