New-Tech Europe | September 2016 | Digital Edition

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new products
The new buck-boost regulators’ wide input voltage range
of 1.8V to 5.5V supports multiple battery topologies, and
their wide output voltage range of 1V to 5.2V combined
with 3A output current provide the ultimate in design
flexibility. The ISL91128 also features I2C programmable
dynamic output voltage adjustability, which eliminates
feedback resistors and allows the reuse of the same
design for multiple output voltage needs.
“Hand-held device designers are constantly challenged
to create smaller, more efficient products whether it is
the latest wearable, a portable medical device or next-
generation smartphone,” said Andy Cowell, senior vice
president of Mobile Power Products at Intersil. “Intersil
specializes in providing the most efficient power delivery
with excellent transient response. Our latest buck-
boost regulators leverage generations of experience
in the most demanding mobile applications to provide
customers with extended battery life in a compact, easy-
to-use package.”
Key Features and Specifications of ISL91127 and
ISL91128 • 30uA typical quiescent current: the lowest
of any high current buck-boost in the industry
• Up to 96% efficiency (PVIN = 3.6V, Vout = 3.4V~4V,
Iout = 200mA)
• Output current up to 3A in boost mode (PVIN = 3V,
Vout = 3.3V)
• Input voltage can range from 1.8 to 5.5V, output
voltage can be adjustable or fixed at 3.3V • Full
protection for under-voltage, short-circuit, and thermal
faults to ensure safe operating conditions and reliable
system operation
• ISL91128 offers I2C dynamic voltage adjustability
for output voltage, and ringing suppression for superior
EMI performance
The ISL91127 and ISL91128 can be combined with the
ISL9003A, ISL9016, ISL9021A, and ISL9001A LDOs to
support multiple output rails with improved ripple. They
also work with the ISL9113 sync boost converter and
ISL91133 boost regulator if additional higher voltage
rails are required, and lower voltage rails are supported
with the ISL9104 and ISL9103 sync buck converters.
Pricing and Availability
The ISL91127IR is available now in a 4mm x 4mm,
20-pin QFN package and is priced at $1.29 USD in 1k
quantities. The ISL91127 is also available in a 20-bump,
2.15mm x 1.74mm WLCSP package priced at $1.25.
The ISL91127IRN-EVZ fixed 3.3V evaluation board and
ISL91127IRA-EVZ adjustable voltage evaluation board
are available for purchase. For more information, please
visit
The ISL91128 is available now in a 20-bump, 2.15mm x
1.74mm WLCSP package and is priced at $1.25 USD in
1k quantities. For more information, please visit: http://
STMicroelectronics Introduces New Super-
Junction MOSFETs including World’s First
1500V Device in TO-220FP Wide Creepage
Package
STMicroelectronics has introduced a portfolio of TO-220
FullPAK (TO-220FP) wide creepage power transistors,
including the world’s first 1500V super-junction MOSFET
in this new important arcing-resistant package.
The TO-220FP wide creepage package is ideal for
the power transistors of open-frame power supplies
commonly used in equipment such as television sets
and PCs, which are vulnerable to surface contamination
by dust and particles that can cause high-voltage arcing
between transistor terminals. The new package’s
extended lead spacing of 4.25mm eliminates the special
potting, lead forming, sleeving, or sealing needed to
prevent the arcing when using conventional packages
with 2.54mm lead spacing. Power-supply manufacturers
can now meet applicable safety standards and minimize
field failures without applying these additional processes,
thereby simplifying manufacturing and enhancing
productivity.
While providing superior arcing resistance, TO-220FP
wide creepage retains the outstanding electrical
properties of the popular TO-220FP. Moreover, similar
outer dimensions help streamline design-in and ensure
compatibility with established assembly processes.
ST developed the TO-220FP wide creepage package
by collaborating with its customer SoluM, a leading
power manufacturer based in Korea. SoluM is using the
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