Boost PFC Efficiency
on: September 7, 2007, 3:53 pm
Release Author: Qspeed Semiconductor
Release Summary: Qspeed Semiconductor is introducing its
Q-Series family of low Qrr, high softness factor, boost converter
Release Body: Low Reverse Recovery Charge Devices Gain up to 1.5%
Efficiency over Ultrafast
Clara, California – September 10, 2007 – Qspeed
Semiconductor, a designer and manufacturer of innovative,
energy-saving power semiconductor devices, today introduced its
Q-Series rectifier family. The new family of devices
was designed specifically for use in power factor correction (PFC)
circuits that deliver from 200 to 1000 W of power. Replacing an
ultrafast diode with a Q-Series device typically realizes efficiency
improvements of 0.5 to 1.5% in the boost converter stage, which
are similar to those obtained by using exotic Silicon Carbide diodes.
Developed using Qspeed’s proprietary technology, the Q-Series
family of devices has the lowest reverse-recovery-charge (QRR) and
the best softness factor of any high-speed silicon rectifiers currently
available on the market.
supply designers no longer have to work around inferior diodes or
use expensive Silicon Carbide devices,” said Michael
T. Robinson, CEO of Qspeed Semiconductor. “Our
Q-Series rectifiers make it easy to improve the efficiency of PFC
boost converters and lower MOSFET operating temperatures while minimizing
EMI generation, all without the use of snubbers and clamps.”
Q-Series product family consists of three devices,
which are rated to deliver continuous forward current values of
3, 5 and 8 A respectively. The 3 A device (LQA03TC600) would typically
be used in boost converter stages that deliver from 200 to 400 W
of continuous output power. The 5 A device (LQA05TC600) would find
its home in converters that deliver from 400 to 700 W, while the
zone for the 8 A device (LQA08TC600) is from about 700 to 1000 W.
now, engineers looking to improve the operating efficiency of their
AC-DC power supplies had to resort to using costly, Silicon Carbide
diodes,” said Richard Francis, Qspeed’s
Chief Technology Officer. “With the lowest reverse
recovery charge and the best turn-off softness factor of any commercially
available silicon rectifier, the Q-Series parts are being adopted
faster than any new power semiconductor I have ever seen.”
All three members of the Q-series family are currently
available in high-volume production quantities. The 3 A LQA03TC600
sells for 78 cents each, in fifty-thousand-piece quantities. The
5 A LQA05TC600 is going for 88 cents each, in 50,000 piece lots.
The 8 A LQA08TC600 is selling for only 1.08 U.S. dollars each, in
50 k piece orders.
Qspeed Semiconductor designs, manufactures and
sells innovative, highly-efficient, energy-saving, power semiconductor
devices. Presently, the company is focused on the active components
currently used in offline power conversion equipment. Headquartered
in Santa Clara, California, the company has manufacturing, testing,
sales and logistics facilities located in Japan, Taiwan and Manila.
readers can get more information: http://www.qspeed.com/pr2
Technical Marketing Manager
3970 Freedom Circle
Santa Clara, CA 95054
Phone: (408) 654-1980, ext. 219
Fax: (408) 654-1988
Details: 3970 Freedom Circle
Santa Clara, CA 95054
Tel(408) 654-1980, ext. 219
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