Advanced Energy-Harvesting IC from STMicroelectronics Broadens Benefits of Battery-Free Technology

Advanced Energy-Harvesting IC from STMicroelectronics Broadens Benefits of
Battery-Free Technology

    Highly efficient, ultra low-power energy harvester and battery charger
      enhances flexibility, simplifies design, extends application reach

GENEVA, Dec. 10, 2013 (GLOBE NEWSWIRE) -- STMicroelectronics (NYSE: STM), a
global semiconductor leader serving customers across the spectrum of
electronics applications, is opening new avenues for energy-harvesting
applications with its latest IC integrating all the functions needed to power
electronic circuits and recharge batteries using either a solar cell or
Thermo-Electric Generator (TEG).

Harvesting ambient light or thermal energy to power small electronic devices
such as wireless sensors, smart-building and industrial equipment controls,
wellness and wearable monitors, protects the environment by reducing CO2
emissions, while eliminating batteries and power cabling, so finally enabling
the Internet of Things (IoT) ecosystem. In the future, hundreds of millions of
these devices operating from tiny quantities of harvested ambient energy are
expected to be deployed in environments such as office buildings, houses,
hotels, industrial sites, transportation infrastructure and electric vehicles.

ST's SPV1050 is ideal for applications with power requirements from a few
microwatts to several milliwatts, and is equally suitable for both indoor and
outdoor consumer and industrial applications using either solar or thermal
energy.

The ultra low-power energy-harvesting IC also provides more functions than
competing devices, which aids miniaturization and saves bill-of-materials
costs. Both 1.8V and 3.3V regulators are available to power a companion
microcontroller or wireless transmitter directly without requiring additional
components. Maximum Power-Point Tracking (MPPT) continuously optimizes energy
harvesting, or can be disabled. The battery-charging circuitry supports a wide
variety of battery types including lithium-ion and lithium-polymer, lithium
thin-film solid state, NiMH and NiCd, as well as supercapacitors.

"Energy harvesting delivers environmental benefits and helps reduce equipment
ownership costs, and is used increasingly as energy-conversion efficiency
rises and typical system power demands fall," said Matteo Lo Presti, Group
Vice President and General Manager, Industrial and Power Conversion Division,
STMicroelectronics. "The tremendous operational and energy-harvesting
efficiency of the SPV1050, combined with its unparalleled flexibility and
feature integration, enables engineers to realize many new opportunities in
industrial and consumer markets."

Inside the SPV1050, a buck-boost converter allows the device to connect to
either TEG or indoor/outdoor solar-energy harvesting modules by providing a
wide input-voltage range from 180mV to 8V. Average operating efficiency of 90%
allows fast battery charging even at low input power levels, while minimum
MPPT accuracy of 90% maximizes energy extraction from solar or TEG sources. In
addition, the integrated battery-charging controller uses highly accurate
under-voltage and end-of-charge thresholds, and provides safe control logic to
prevent excessive discharging for longer battery life.

The SPV1050 is sampling now and scheduled for production in Q1 2014. It is
available in a 20-lead QFN 3x3x1mm package or in 20-bump WLCSP tested and
unsawn wafers. Budgetary pricing is $1.15 for orders of up to 1,000 pieces.

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 life.augmented.

In 2012, the Company's net revenues were $8.49 billion. Further information on
ST can be found at www.st.com.

For further information please contact:

Michael Markowitz
Director Technical Media Relations
STMicroelectronics
Tel: +1 781 591 0354
michael.markowitz@st.com

Energy Harvester from STMicroelectronics
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