MILPITAS, Calif., May 26, 2015 /PRNewswire/ -- Intersil
Corporation (NASDAQ: ISIL), a leading provider of innovative power
management and precision analog solutions, today announced the
first 60V synchronous buck controller able to bypass the
intermediate step-down conversion stage traditionally employed in
industrial applications. The ISL8117 synchronous step-down PWM
controller's low duty cycle (40ns minimum on time) enables the
direct step-down conversion from 48V to a 1V point-of-load. This
technical achievement makes it possible for designers to reduce
system complexity and solution cost in industrial, factory
automation, medical and communications infrastructure
applications.
![Easy-to-use ISL8117 eliminates need for intermediate power conversion stage in industrial applications Easy-to-use ISL8117 eliminates need for intermediate power conversion stage in industrial applications](https://photos.prnewswire.com/prnvar/20150520/217656)
In high voltage applications where a lower output voltage is
required, designers have traditionally relied on modules that
increase system cost, or two stage DC/DC solutions that increase
solution footprint and complexity. The ISL8117 controller offers a
cost-effective and reliable alternative for applications where Vout
to Vin ratio is low. The ISL8117 uses valley current mode
modulation with adaptive slope compensation to enable stable
operation for a wide range of Vin and Vout combinations, with no
external compensation required. System designers can also use the
ISL8117's adjustable frequency up to 2MHz to optimize power supply
cost, size and efficiency.
The innovative ISL8117 reduces solution footprint and simplifies
design without compromising performance. Default design values for
commonly used functions and the ISL8117's wide Vin and Vout reduce
the number of external components compared to competing solutions.
With the ISL8117, engineers can design a complete DC/DC buck
conversion solution with only 10 components, including MOSFETs and
passives, and achieve up to 98% conversion efficiency with 1.5%
output voltage accuracy. The ISL8117's low pin count and layout
friendly pin architecture also minimizes the number of overlapping
traces, further improving power supply performance.
"The ISL8117 buck controller addresses a growing need for direct
POL conversion from very high input voltage such as 48V to 1V
output," said Mark Downing, senior
vice president of Infrastructure and Industrial Power Products at
Intersil. "The unique ability to support light load efficiency mode
is critical in industrial applications and makes the ISL8117 a much
better alternative than existing solutions based on older
technology."
Key Features and Specifications
- Wide input voltage range of 4.5V to 60V covers all standard
input rails including 5V, 12V, 24V, 36V, 42V and 48V
- Wide voltage output range is configurable from 0.6V to 54V
- Smallest min on time in the market, which enables a very low
duty cycle power supply and eliminates the need for a two stage
solution in many applications
- Programmable 100kHz to 2MHz switching frequency can be
synchronized to reduce radiated system noise and avoid beat
frequency issues
- Complete fault protection for long term reliability including
over-voltage, under-voltage, over-current and over-temperature
- High current FET drivers and DEM mode operation ensures
efficiency at all load levels
- Adjustable soft-start with pre-bias support enables the
sequenced startup of multiple ISL8117 controllers
The ISL8117 high voltage controller can be combined with
Intersil low dropout linear regulators such as the ISL80136,
ISL80138, ISL80101A, and integrated FET switching regulators
(ISL8023/24 or ISL8016) to support the bulk power rails in a
typical process control industrial application.
Pricing and Availability
The ISL8117 is available now
in 4mm x 4mm QFN and 6.4mm x 5mm HTSSOP packages. Pricing for the
QFN package is $1.80 USD and the
HTSSOP is $1.95 USD in 1k
quantities.
Two evaluation boards priced at $80
USD allow designers to quickly evaluate device features and
performance: ISL8117EVAL1Z low power (Vin 4.5V-60V and 3.3Vout/6A),
and the ISL8117EVAL2Z high power (Vin 18V-60V and 12Vout/20A).
Two demonstration reference design boards priced at $60 USD allow designers to produce low power
(factory automation or robotic) and high power (telecom or
pachinko) applications.
For more information on the ISL8117 60V controller, evaluation
boards and demo reference design boards, please visit:
www.intersil.com/products/isl8117. Watch a video of the ISL8117
evaluation and demo boards.
About Intersil
Intersil Corporation is a leading
provider of innovative power management and precision analog
solutions. The company's products form the building blocks of
increasingly intelligent, mobile and power hungry electronics,
enabling advances in power management to improve efficiency and
extend battery life. With a deep portfolio of intellectual property
and a rich history of design and process innovation, Intersil is
the trusted partner to leading companies in some of the world's
largest markets, including industrial and infrastructure, mobile
computing, automotive and aerospace. For more information about
Intersil, visit our website at www.intersil.com.
Intersil and the Intersil logo are trademarks or registered
trademarks of Intersil Corporation. All other brands, product names
and marks are or may be trademarks or registered trademarks used to
identify products or services of their respective owners.
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SOURCE Intersil Corporation