Fairchild Semiconductor gains SiC expertise
by acquiring ranSiC
Fairchild Semiconductor has acquired ranSiC, a Silicon
Carbide (SiC) power transistor company. Silicon Carbide
based power semiconductor devices are more efficient than
silicon bases devices. With the power consumption becoming
key factor the SiC based devices are increasingly finding
Through this acquisition Fairchild Semiconductor gains
bipolar SiC transistor technology and a team of highly experienced
SiC engineers and scientists and multiple patents in SiC
"The combination of silicon carbide technology with
Fairchild's existing capabilities in MOSFETs, IGBTs and
multi-chip modules, along with our global access to customers,
positions us to continue to be a leader in innovative, high
performance power transistor technology," said Mark
Thompson, Fairchild's Chairman, CEO and president.
"The performance levels achieved with SiC technology
allow for much higher efficiency in power conversion. It
also offers a higher switching speed, a feature that enables
smaller end system form factors. Silicon Carbide technology
is established in the market with a strong lead over alternatives
in the wide bandgap area for applications that require voltages
greater than 600V and demonstrates superior ruggedness and
reliability," added Dan Kinzer, Fairchild's Chief Technology
Benefits SiC over pure Silicon include:
lower on-state voltage drop for a given chip size
higher current density
higher temperature operation
extremely low thermal resistance
ultra fast switching with only majority carrier conduction
easy drive solutions due to normally off operation with
current gain in the range of 100
easy paralleling due to the positive temperature coefficient
Additionally, the device resistance is very near the theoretical
limit for SiC. Turn-on and turn-off times in the 25ns range
switching 50A from 800V have been demonstrated. Parametric
stability has been demonstrated under long term full rated
bias and current stress conditions.
These high gain SiC bipolar devices are ideal for high-power
conversion applications in down-hole drilling, solar inverters,
wind-powered inverters, electric and hybrid electric vehicles,
industrial drives, UPS and light rail traction applications.
These markets are projected by Yole Development to approach
$1 billion by 2020.
This device is capable of industry leading efficiency,
cutting losses relative to established silicon approaches
by up to half, or allowing an increase of frequency by up
to 4X with similar losses. Overall system cost and value
can benefit from much smaller, lighter passive components.
For systems that require the best efficiency and power density,
there is no equal.
Fairchild is sampling initial 1200V products up to 50A
ratings in targeted applications. Future offerings are in
development to expand the voltage and current range, and
to continue to drive improved energy saving.