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SAN
JOSE, CA -- NOVEMBER 30, 2004 --
Summit Microelectronics has
announced a new concept in power
supply design that gives system
design engineers unparalleled
flexibility and ease of
implementation. Using the new
Summit SMB120,
designers can now digitally
program the entire multiple
output power supply and
associated power management
functions with a few clicks of a
mouse compared to the tedious
iterative hardware design of
conventional analog power
solutions.
The SMB120 nine-channel
programmable DC-DC converter is
the first in a family of new
devices optimized for
increasingly complex consumer
electronics applications such as
digital still cameras/camcorders
(DSC/DCC), DVD/MP3
players/recorders, handheld and
automotive GPS terminals,
personal digital assistants
(PDAs), portable LCD TV's, as
well as the next generation of
"smart" mobile phones.
"The SMB120 is Summit's first
device in a series of
increasingly integrated
configurable precision power
products for the consumer
electronics market and, as such,
sets a new direction for the
company," stated Chuck Berghoff,
Summit president and CEO.
"Consumer electronics OEMs are
under intense pressures to
release more products to market
with shorter development cycles
than ever before. Summit's proven
programmable analog technology
creates a 'platform' solution
that allows OEM's to develop
designs dramatically faster and
with fewer engineering resources
than with conventional offerings.
Our new consumer products
leverage Summit's programmable
precision control technology,
supplied for years to the world's
leading communication market
equipment OEMs. They integrate
power conversion functions to a
level not seen before. Initial
customer adoption is exceeding
expectations."
Incorporating a level of
programmability, integration and
precision previously missing in
power management integrated
circuits, the SMB120 utilizes the
I2C bus as a management bus,
providing a digital,
simple-to-use GUI software-driven
programming interface. Capability
includes the ability to
independently sequence on/off
each output with precisely
controlled timing and slew rate
and program or arbitrarily adjust
"on-the-fly" (margining) output
voltages with +/-0.5% accuracy.
The adjust function can be used
as a brightness or audio level
control.
Additionally, complete power
system diagnostics and monitoring
is provided via the digital
interface. These include input
and output monitoring for
under/overvoltage (UV/OV),
low/missing battery detection, AC
adapter detection and RESET
output. All configuration data
for the SMB120 is stored in
on-chip EEPROM memory of which 96
bytes are available for user data
storage. Enhancing flexibility
ever further, the device can be
programmed during development and
then used in a "fixed"
configuration or it may be
re-programmed in-system via the
I2C interface.
The SMB120 incorporates a total
of nine-channels of power
conversion: four pulsewidth
modulated (PWM) DC-DC step-down
(buck) converters, three PWM DCDC
step-up (boost) converters, one
PWM DC-DC inverting step-up/down
(buck/boost) converter, and one
low-dropout linear LDO regulator.
All PWM channels are digitally
programmable for output
characteristics and monitoring,
including voltage output levels
to +/- 0.5% accuracy.
This array of converters is well
suited and configurable to
powering components commonly
found in digital consumer
electronics such as LCD-TFT
displays, CCD imagers, DSP's,
embedded CPU's, LED backlighting,
motor drives and memory arrays.
The outputs are easily scalable
for output current due to
external MOSFET switches further
enhancing the flexibility of
application for various
designs.
The SMB120 operates directly from
+2.7V to +5.5V input making it
ideally suited for 1-cell Li-Ion
battery applications. Higher
input voltages (2-cell Li-Ion)
can be accommodated in many cases
with simple applications
configuration. The operating
temperature range is +0C to +70C
and is available in the 64-pad
QFN-64 package that is lead-free
and RoHS-standard compliant.
Available now in production
quantities, the device is priced
at $5.95 each in quantities of
1,000 units.
DESIGN SOFTWARE AND PROGRAMMER
FOR PROTOTYPE DEVELOPMENT
To speed user product
development, Summit offers
customers the SMB120EV companion
evaluation board providing a
graphic user interface (GUI)
software so designers can quickly
see the features and benefits and
design a prototype power supply
with the SMB120. This is a
complete development tool that
lets designers easily manipulate
the characteristics of their
systems. The SMB120EV design kit
includes menu-driven Microsoft
Windows® graphic user
interface (GUI) software to
automate programming tasks and
also includes all necessary
hardware to interface to the
parallel or USB port of a laptop
or PC.
Once a user completes design and
prototyping, the SMB120EV
automatically generates a HEX
data file that can be transmitted
to Summit for review and
approval. Summit then assigns a
unique customer identification
code to the HEX file and programs
the customer's production devices
prior to final electrical test
operations. This ensures that the
device will operate properly in
the end application. The design
kit software can be downloaded
today from Summit's website
(www.summitmicro.com).
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About
Summit Microelectronics:
"Programmable analog for a
digital world".
Summit Microelectronics supplies
semiconductors that manage and
provide power functions in
networking/communications,
storage/computing, industrial,
military, and consumer products.
Customers can very rapidly tailor
Summit's programmable analog
technology to multiple
applications by programming the
same part.
Founded
in 1997, Summit is headquartered
in San Jose, California. The
Company is ISO 9001
certified.
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