STMicroelectronics Introduces World's First Universal Lighting Controller

STMicroelectronics Introduces World's First Universal Lighting Controller 
Industry-Unique Device Opens the Way Towards Cost-Effective,
Energy-Efficient Lighting Systems in the Home, in the Office, and on
the Street 
GENEVA -- (Marketwire) -- 02/11/13 --  Domestic, commercial and
public lighting systems can now be made greener, more economical,
safer and more flexible, thanks to a unique device introduced by
STMicroelectronics (NYSE: STM), a global semiconductor leader serving
customers across the spectrum of electronics applications and a world
leader in power-management solutions. The world's first programmable
digital controller specifically optimized for lighting and
power-supply applications, the new STLUX385 (Masterlux(TM) platform)
simplifies the design of traditional power-conversion topologies,
enabling faster development of innovative lighting systems. 
The key to the new possibilities for improving the performance of
LED, fluorescent and HID (High-Intensity Discharge) lighting systems
is the STLUX385's combination of a proven, cost-effective STM8
microprocessor core and a unique set of peripherals aimed at
simplifying the design of the lighting power supply and digital
control of the lights. Depending on factors such as the lighting
technology used, the input power source (AC or DC), dimming
requirements and safety or reliability issues, many different types
of power conversion and control topologies are required in the
current and emerging lighting applications and the STLUX385 is the
first device able to address all of these via a single programmable
"More than 20% of the electricity generated is used to light our
homes, streets, offices, factories and public areas, and making
lighting more efficient is an essential step on the path towards a
sustainable world," said Matteo Lo Presti, STMicroelectronics Group
Vice President, Industrial & Power Conversion Division. "The STLUX385
distils 25 years of ST leadership in power conversion solutions into
a single high value platform that customers can use to build more
innovative and efficient lighting solutions." 
The STLUX385 achieves this goal primarily by integrating six
specially-designed peripherals called SMED (State Machine,
Event-Driven) circuits that interact with each other and with
external signals via a programmable switching matrix to control the
power delivered to the lighting elements. In addition to the specific
application signals, the SMEDs can process external commands to turn
the lights on/off or set the dimming level, diagnostic signals such
as open- or short-circuit detected, or inputs from sensors in
applications where the lighting is designed to adapt to ambient
For example, this opens the way towards intelligent LED street lamps
that increase their brightness gradually as daylight fades and,
conversely, automatically reduce their brightness as the sun rises
instead of having only a full brightness or off-setting at
predetermined times. 
The STLUX385 allows sophisticated lighting systems that currently
require the use of expensive external Digital Signal Processors to be
produced with shorter time-to-market and lower costs. It allows light
quality and its perception to be improved through dedicated
algorithms and energy saving through high-efficiency conversion
algorithms, while allowing new interactions between the user and the
lighting system. 
In addition to the six SMED peripherals, the STLUX385 also integrates
a hardware DALI (Digital Addressable Lighting Interface) peripheral.
Digitally controlled lighting is the key to energy saving in building
and outdoor lighting installations and the DALI protocol is now in
international use across the lighting industry. The STLUX385 is
compatible with wired or wireless communications, simplifying the
installation in large indoor and outdoor areas and reducing
maintenance costs. 
The STLUX385 is available now in a compact TSSOP38 package at a price
of US$2 in quantities of 1,000 units. 
Technical Notes 
* Six configurable PWM State Machine Event Driven (SMED) outputs
with10.4ns resolution (up to 1.3ns using automatic dithering)  
* DALI Slave HW peripheral  
* -40  degrees C to 105  degrees C outdoor temperature range  
* Four Analog Comparators synchronized with a 96MHz clock  
* Six fast digital inputs synchronized with a 96MHz clock  
* STM8 core-based (up to 20 MIPS)  
* 8-channel, 10-bit ADC with programmable op-amp gain and sequencer  
* 3V to 5.5V DC voltage supply 
About STMicroelectronics
 ST is a global leader in the semiconductor
market serving customers across the spectrum of sense and power and
automotive products and embedded processing solutions. From energy
management and savings to trust and data security, from healthcare
and wellness to smart consumer devices, in the home, car and office,
at work and at play, ST is found everywhere microelectronics make a
positive and innovative contribution to people's life. By getting
more from technology to get more from life, ST stands for
In 2012, the Company's net revenues were $8.49 billion. Further
information on ST can be found at 
ST Lighting Controller: 
ST Lighting Controller_PRODUCT IMAGE:  
ST Lighting Controller_BLOCK DIAGRAM:  
For Press Information Contact:
Michael Markowitz
Director Technical Media Relations
+1 781 591 0354 
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