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Cree honored with 2007 Electronic
Products "Product of the Year"
SiC Schottky diode pushes the limits
for energy conversion technologies
Newer forms of energy conversion technologies such as
wind and solar power, and hybrid electric vehicles are
constantly be created to improve energy conversion efficiency.
Silicon carbide (SiC) Schottky diodes are a significant
step toward reaching that goal. These SiC devices have
no reverse current, and systems that use this device
will run cooler and more efficiently compared to standard
silicon designs. The elimination of the reverse recovery
current in a power conversion system also helps reduce
EMI.
The CPW2-1200S050 is a 1200-V/50-A Schottky
diode that demonstrates a significant advance in manufacturing
of SiC material processing. It’s
so good that many providers of Schottky diodes use
the raw wafer with this SiC substrate because the process
has <1 defect/cm2.
It features the industry’s largest-area SiC die,
with a die size of 8.2 x 4 mm. A significant benefit
of the diode lies in its ability to switch fast, at <50
ns. It can also simplify PFC boost design by eliminating
the need for snubbers thus shrinking component count,
and reducing power losses. The design shows a positive
temperature coefficient in the on-resistance and a negative
temperature coefficient in the current gain enabling
the devices to be connected in parallel without encountering
current-sharing problems.
Click here to visit the Electronic
Products Product of the Year website.
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