System General ATX Power Solution Reference Design Wins US 80 PLUS Certification

System General ATX Power Solution Reference Design Wins US 80 PLUS Certification

October 23, 2006

    TAIPEI, Taiwan, Oct. 23 /Xinhua-PRNewswire/ -- System
General Corporation -- the leader in Desktop PC power
supply controller ICs -- today announced that its forward
ATX reference design has passed US 80 PLUS certification
for energy efficiency.  This reference design of 300W power
solution adopts System General's innovative IC products,
including PFC/PWM combo control chip, flyback PWM control
chip, and supervisor IC.  With extremely simple circuit
structure and low BOM cost, this solution achieves a power
factor of over 0.98, average power conversion efficiency of
82.51 percent, and standby energy consumption lower than 1W.
 It ideally meets the 80 PLUS and International Low Standby
Power Consumption standard.

    To speed up the development of energy saving
technology, the USA and European Union have established
regulations and standards sequentially for the requirements
of power efficiency.  The 80 PLUS Project is administered by
the U.S.'s Ecos Consulting to encourage manufacturers of
high-output desktop and server power supplies to achieve a
minimum of 80 percent efficiency at 20 percent, 50 percent
and 100 percent loading points for improved energy
utilization by incorporating the system's internal power. 

    "It's the future trend to produce a power system
meeting international energy saving regulations.  However,
it's hard for power supply manufacturers to fulfill the
requirements of high-quality and low-cost operation
simultaneously," said Tom Yang, the CEO of System
General.  "Through the integration of multiple
innovative patent technologies, SG successfully developed
the power solution that passed the rigorous 80 PLUS
testing.  We provide full technical support and optimal
pricing to help customers develop new products with
advanced marketing competitiveness."

    System General is one of the rare IC design companies
that can provide complete forward power solutions in the
industry.  The forward ATX power reference design solution
uses SG's self-developed & patented Switched Charge
Multiplier-Divider (US6,812,769), Power Supply having
Multi-Vector Error Amplifier for Power Factor Correction
(US6,900,623), and PWM controller having modulator for
saving power and reducing acoustic noise (US6,781,356), to
enhance its total performance dramatically and make it more
competitive.  This solution also features an advantage of
high integration that includes single chip integrating PFC
& FWM and multiple built-in protection functions.
Amazingly, customers only need to trade an extra cost of
USD$3.0 from the original design and introduce their 80
PLUS verified models quickly, making it the ideal solution
featuring the optimal price-to-performance ratio available
in today's market.  In the future, SG will release more
revolutionary power solutions continuously, with excellent
R&D capability. 

    Introduction of SG Power ICs in this Solution:

     -- SG6931/2 -- The highly-integrated PFC/PWM combo-IC
for forward 
        topology of a power supply/adaptor is designed to
provide current 
        transfer operations in Continuous Conduction Mode
(CCM) for high 
        output power systems rated above 150W.  Its main
features include: 
        built-in green-mode function, highly integrated
Over Temperature 
        Protection (OTP), Over Voltage Protection (OVP),
Under Voltage 
        Protection (UVP), Over Power Protection (OPP),
Short Circuit 
        Protection (SCP) and Brown-Out protection. Its
patent amplifier 
        technology also improves output dynamic response. 
In addition, 
        SG6931/2 allow maximum PWM cycle adjustment.

     -- SG6858 -- The low-watt fly-back PWM IC, its patent
Green Mode 
        technology, which realizes super-low standby power
and built-in 
        synchronized slope compensation, greatly improves
system stability. 
        In addition, it also features constant power output
limits, 
        programmable PWM frequency, Cycle-by-cycle Current
limiting, and many 
        other features.

     -- SG6516 -- The highly-integrated supervisor IC has
overall 
        supervising and protecting functions that can
provide complete 
        protection for power systems.  The SG6516 provides
two 12V Over 
        Voltage Protection (OVP), Under Voltage Protection
(UVP), and Over 
        Current Protection (OCP) functions.  Furthermore,
it also features 
        highly precise VRI & VPGI, built-in 20mS OCP
timing delay 
        protection, 300mS power good signal protection, and
PSON 
        controlling switch signals.

    System General can provide customers complete technical
documents of this ATX power solution reference design, which
includes demo-board, reference circuit, BOM list, Gerber
file, etc., and real-time professional technical service. 
For more related information, please visit the product /
desktop power solution at the System General web site (
http://www.sg.com.tw/ATX-POWER ).
    
    About System General

    System General was founded in 1983.  Initially, the
company primarily offered power system design services.  In
1985, it began R&D, manufacturing, and marketing of IC
programming and testing instruments.  After endeavors of
more than a decade, SG has earned a reputation for high
quality goods and has received recognition from customers
in Taiwan and abroad.  In 1999, SG established its
semiconductor branch, and began officially offering IC
design services.  Its principal products are power
management ICs, which were introduced to the market in
2002.  Most Taiwan IC design firms concentrate on the DC-DC
field, while SG is the only IC design firm in Taiwan
possessing comprehensive AC-DC power management chip
production lines with products used on the power management
systems of various kinds of computers, peripherals, wireless
communications equipment, and home appliances.

    SG is headquartered in Taiwan with subsidiaries in the
US and China and an office in Korea, and has established
several marketing channels in Europe, America, and the Asia
Pacific region, actively paving the way for globalization.

    The two SG business groups currently offer the
following products:

    1. Power control and management IC: ATX SMPS control
IC; energy-saving PWM 
       control IC; scanner analog front end control IC

    2. IC programming and testing instrument: fully
automatic IC programming 
       and testing system; universal/special component IC
burner; mass 
       produced/R&D IC burner

    SG Web site: http://www.sg.com.tw/  

    For more information, please contact:¡G

     Ru-Ying Cheng 
     Tel:¡G  [phone] x539
     Fax:¡G  [phone]
     Email:  [e-mail] 
     Web:    http:// www.sg.com.tw  

SOURCE  System General Corporation