International Rectifier, IR® (NYSE: IRF), a world leader in
power management technology, today introduced the IR3891 and IR3892
SupIRBuck® integrated dual output voltage regulators designed
for space-constrained netcom, server and storage applications.
The new dual output devices are optimized for single rail operation from
5V to 12V inputs or 1V to 21V input with external 5V bias. Available in
a compact 5x6mm PQFN package, the IR3891 and IR3892 offer an
ultra-compact solution for applications requiring up to 4A per channel
and up to 6A per channel respectively in as little as 165 mm2.
“The IR3892 single-sided PCB designs are 46% smaller when compared with
traditional designs that utilize two 6A single output converters. The
IR3892 also works comfortably with dual-sided designs, further reducing
PCB board size to less than 30% of the space required in traditional
designs,” said John Lambert, IR’s Point-of-Load Marketing Manager.
The IR3891 and IR3892 feature a proprietary modulator scheme that
enables jitter-free and noise-free operation to allow higher
frequency/higher bandwidth operation for better transient response and
fewer output capacitors to reduce overall system size. Other key
features include interleaved phases to reduce input capacitance,
powertrain isolation to eliminate crosstalk and sequencing capability on
channel two.
“Offering the features and benefits of the SupIRBuck® family,
these new dual output devices offer an efficient ultra-compact solution
to meet the demands of space constrained, lower power netcom, server and
storage applications,” added John Lambert.
The IR3891 and IR3892 offer SupIRBuck standard features that include
switching frequency up to 1.5MHz and 1.0Mhz respectively, pre-biased
start-up, input voltage aware enable, over voltage protection, power
good, optional true output voltage sensing for open line feedback and
adjustable OVP, internal soft-start and minimum input voltage of 1.0V
(with ext. bias) and operating junction temperatures of -40oC
to 125oC. This new device and the entire SupIRBuck family are
industrial qualified ensuring robust designs for durable systems.
More information is available on the International Rectifier website at http://www.irf.com/whats-new/nr131114.html
Design Tools
Datasheets and application notes are posted on the International
Rectifier website at www.irf.com.
The IRDC3891 and IRDC3892 SupIRBuck reference designs featuring the new
devices are also offered. A SupIRBuck Excel spreadsheet design tool and
Icepak thermal model are available to facilitate design in addition to a
user friendly, interactive, web-based selection and simulation tool at http://mypower.irf.com/SupIRBuck.
Price and Availability
Pricing for the IR3891 and IR3892 begins at US $3.46 and US $3.56 each
respectively in 100,000-unit quantities. Pricing for the IRDC3891 and
IRDC3892 SupIRBuck reference designs start at US $29 per kit. Production
orders are available immediately. Prices are subject to change.
About International Rectifier
International Rectifier (NYSE:IRF) is a world leader in power management
technology. IR’s analog and mixed signal ICs, advanced circuit devices,
integrated power systems and components enable high performance
computing and reduce energy waste from motors, the world’s single
largest consumer of electricity. Leading manufacturers of computers,
energy efficient appliances, lighting, automobiles, satellites, aircraft
and defense systems rely on IR’s power management benchmarks to power
their next generation products. For more information, go to www.irf.com.
Trademark Notice
IR® and SupIRBuck® are registered
trademarks of International Rectifier Corporation. All other product
names noted herein may be trademarks of their respective holders.
Copyright Business Wire 2013