AUSTIN, Texas, Aug. 28, 2019
/PRNewswire/ -- Silicon Labs (NASDAQ: SLAB) has
introduced a family of compact, robust isolated smart switches
designed to drive any load, even in the harshest industrial
environments. The new Si834x isolated switches are ideal for
driving resistive and inductive loads such as solenoids, relays and
lamps used in industrial control systems including programmable
logic controllers (PLCs), I/O modules, relay drivers and servo
motor controllers. Each switch is galvanically isolated for safety
using Silicon Labs' groundbreaking CMOS-based isolation technology,
offering better reliability and performance than legacy
optocoupler-based isolation, including high common-mode transient
immunity (CMTI) of more than 100 kV/µs.
The Si834x isolated switch family supports high-side and
low-side switch options, low on-resistance (145 mΩ RON),
up to 700 mA of continuous current compliant with the IEC 61131-2
standard, comprehensive protection and diagnostic reporting, and
advanced configuration, monitoring and control for industrial
automation systems. The switch logic interface can be as simple as
four low-power CMOS digital inputs or as rich and flexible as a
full serial peripheral interface (SPI) capable of controlling up to
128 channels with four MCU pins.
"The new Si834x isolated smart switch family embodies three
generations of Silicon Labs' isolation innovation for industrial
automation," said Brian Mirkin, Vice
President and General Manager of Silicon Labs' power products. "The
Si834x family expands our broad isolator portfolio, complementing
our PLC input isolators and isolated FET drivers to provide a
complete solution. The Si834x switches outperform opto-isolators,
power FETs and other competing options by offering a fully
integrated 24 V digital output solution with best-in-class switch
protection, flexible configuration and comprehensive diagnostic
feedback."
Sophisticated switch and load monitoring techniques combined
with fast responses to changing conditions make the Si834x switches
extremely robust, flexible solutions for driving a wide range of
loads. Each switch can detect an open-circuit condition and is
protected against over-current, over-voltage from demagnetization
(inductive kick or flyback voltage) and over-temperature
conditions. An innovative multi-voltage smart clamp efficiently
handles an unlimited amount of demagnetization energy. Over-current
protection includes an inrush current mode not found in competing
products, allowing the switch to drive challenging loads.
The Si834x switches achieve better inductive load-driving
performance than competing devices and safer overload protection
without the same inefficiency, loss of lifetime reliability, or the
need for complicated cooling solutions by employing an innovative,
rapid manipulation of switch impedance and clamp voltage. While
other solutions entering into a fault state may shut down, the
Si834x switches can continue operation in a constrained but
functional state with reduced channel performance, dramatically
improving system uptime.
The isolated switches feature a sophisticated logic interface
with eight separate diagnostic reports, offering an unprecedented
level of detail and control for each switch and making the Si834x
devices the most flexible switches on the market. Diagnostics are
configured, monitored and cleared through SPI or exposed on
active-low, open-drain indicator pins for easy access. Diagnostic
communication is independent of the switch control signals across
the isolation barrier. Separate isolation channels and constant
fault monitoring ensure the highest level of device reliability,
providing system operators with detailed information about how the
switches and their loads are behaving on the other side of the
isolation barrier.
Pricing and Availability
Samples and production
quantities of the 4-channel Si834x isolated smart switches are
available now in a compact 9 mm x 9 mm DFN-32 package with an
exposed center pad (ePAD). The Si834x4x switches with a parallel
interface are priced at $1.90 each
(USD) in 100,000-unit quantities. The Si834x8x switches supporting
SPI are priced at $2.09 each in
100,000-unit quantities. To simplify development and accelerate
time to market, Silicon Labs offers Si834x evaluation kits with
either a parallel or SPI interface and sinking/sourcing output
options. For more information and to request device samples, visit
silabs.com/isolated-smart-switch.
Silicon Labs
Silicon Labs (NASDAQ: SLAB) is a leading
provider of silicon, software and solutions for a smarter, more
connected world. Our award-winning technologies are shaping the
future of the Internet of Things, Internet infrastructure,
industrial automation, consumer and automotive markets. Our
world-class engineering team creates products focused on
performance, energy savings, connectivity and simplicity.
silabs.com
Connect with Silicon Labs
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dale.weisman@silabs.com
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Cautionary Language
This press release may contain
forward-looking statements based on Silicon Labs' current
expectations. These forward-looking statements involve risks and
uncertainties. A number of important factors could cause actual
results to differ materially from those in the forward-looking
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refer to Silicon Labs' filings with the SEC. Silicon Labs disclaims
any intention or obligation to update or revise any forward-looking
statements, whether as a result of new information, future events
or otherwise.
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SOURCE Silicon Labs