STMicroelectronics : Power Innovation from STMicroelectronics Could Save Greenhouse Gas Generation Equal to Emissions of

   STMicroelectronics : Power Innovation from STMicroelectronics Could Save
      Greenhouse Gas Generation Equal to Emissions of Thousands of Cars

   New superjunction MOSFETs featuring reduced gate charge increase energy
    efficiency in LCD TV power supplies and other electronics applications

Geneva, March 13, 2013 - STMicroelectronics (NYSE: STM), a global
semiconductor leader serving customers across the spectrum of electronics
applications, has announced special fast-acting variants of its advanced
superjunction power MOSFETs used in energy-efficient consumer products,
computing and telecom systems, lighting controllers and solar energy

The latest devices step up efficiency in the type of power supplies often used
in equipment such as mid-sized televisions in the 200-500W power range. If
fitted in each of the 200 million LCD TVs produced each year^[1], the new
MDmesh II Plus(TM) Low Qg (low gate charge) power transistors featuring
reduced gate charge could reduce greenhouse gas emissions by over 140,000 tons
per year, equivalent to taking around 30,000 passenger vehicles off the

Perfected only by a small number of manufacturers, superjunction technology
allows power transistors to combine small size, high voltage capacity, and
outstanding energy efficiency when turned on. ST is a world leader in this
type of technology with its MDmesh power MOSFETs, and now delivers even better
performance with its latest MDmesh II Plus(TM) Low Qg family. These devices
feature a reduced internal charge for high efficiency when switching as well
as when conducting, saving even more energy in resonant-type power supplies
that are widely used in LCD TVs.

The enhanced design of the new devices results in a low gate charge (Qg) as
well as low input and output capacitance. Each of these factors contributes to
faster and more efficient switching, which encourages designers to use
superjunction transistors in the resonant type of power supplies typically
seen in LCD TVs. Until now, superjunction transistors have been used most
effectively in hard-switching topologies, where the device is made to switch
even while the current and voltage remain high. In a resonant power supply two
inductors and a capacitor (LLC converter) ensure the transistor is switched at
zero voltage to smooth the flow of energy in the system and help increase
efficiency. The new MDmesh II Plus^TM Low Qg family is also highly resistant
to the effects of large and sudden changes in applied voltage (high dv/dt
ruggedness), which can damage transistors and cause spurious switching. This
allows the latest devices to perform reliably even when exposed to large
voltage transients such as noise and harmonics on AC power lines.

The first MDmesh II Plus^TM Low Qg device to enter production is the
STP24N60M2 in the TO-220 package. Unit pricing is $2.50 for volumes in the
range of 1,000 pieces. If your company has a high-volume need, please contact
your ST sales office. ST will expand the family to include over 50 devices, in
a variety of packages such as TO-220FP, I2PAK, I2PAK FP, D2PAK, TO-247 and
PowerFLAT 8x8.

Major features of STP24N60M2:

  oOn-state resistance (R[DS(ON)]): 190mohms
  oBreakdown voltage: 600V
  oMaximum continuous drain current (I[D]): 18A
  odv/dt ruggedness: 50V/ns
  o100% avalanche tested

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

For Press Information Contact:

Michael Markowitz
Director Technical Media Relations
+1 781 591 0354


[1] NPD DisplaySearch Advanced Quarterly Global TV Shipment and Forecast
Report, November 2012

[2] Based on a 0.5% efficiency increase at half load (100W), saving 3Wh per
day assuming average TV usage of 6 hours per day, hence saving around 1kWh per
year per TV. In 200 million TVs, global saving is 200GWh. US Environmental
Protection Agency ( equivalence calculator equates this to 141,110
tons CO2 equivalent, matching greenhouse gas emissions of 29,328 passenger

New Power MOSFETs from ST
New Power MOSFETs from ST_IMAGE


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