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San
Jose, Calif. - August 24, 2005
- Summit
Microelectronics has
announced the next generation of
Programmable Power Manager
multi-output power supply ICs.
Following the widely acclaimed
first generation products, the
new SMB122
focuses on portable power
applications, adding key features
such as programmable battery
management and integrated FET's.
he SMB122 also provides enhanced
flexibility and programmability
compared to the first generation
as users can now change
functionality of several outputs
in addition to parametric
adjustment. With Summit's easy to
use development environment users
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 IC's
the Summit solution can
significantly improve development
cycle time.
Incorporating a level of
integration not available in
conventional power IC's the
SMB122 effectively combines power
regulation and advanced power
control into one integrated
solution. In addition to the
step-down, step-up, inverting,
LDO outputs and the Li-Ion
charger the SMB122's power
control functions include:
individual channel
enable/shutdown, power up/down
sequencing, power up slew rate
control, static and dynamic
output voltage control (Dynamic
Voltage Management). The battery
charger is likewise fully
programmable for all the LiIon
CC/CV parameters with 0.5% float
voltage accuracy. Additionally,
complete power system diagnostics
and monitoring is provided via
the I2C serial interface and
digital status outputs. These
include input and output
monitoring for
under/over-voltage/over-current
(UV/OV/OC) with integrated system
RESET control, low/missing
battery detection and AC/DC
adapter detection. All
configuration data for the SMB122
is programmed via the easy to use
PC-based graphical user interface
(GUI) and 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 SMB122 Programmable Power
Manager extends Summit's
leadership in consumer
applications where power
subsystem complexity has created
a design bottleneck", stated Abid
Hussain, Summit's Director of
Marketing. "OEMs are under
intense pressure to develop high
performance, feature-packed
products with shorter development
cycles than ever before. The
SMB122 offers unequaled
flexibility needed to speed
development while providing the
highest integration to meet the
cost metrics of high volume
production."
Of the eight programmable
regulators four are also
functionally configurable: Three
PWM/PFM step-down (buck)
converters, one configurable
PWM/PFM step-up (boost) OR
step-down (buck) converter, three
configurable PWM/PFM step-up
(boost) OR inverting (buck-boost)
converters, and one low-dropout
linear LDO regulator. All outputs
are programmable for
sequencing/enable, output voltage
(static and dynamic to 1.5%
accuracy) and UV/OV/OC
monitoring. Automatic PWM/PFM
operation is provided to enhance
light load efficiency with PWM
override for noise sensitive RF
or audio application.
Programmable phase interleaving
for the switching regulators also
reduces noise and peak battery
loading. Short circuit current
limiting and thermal protection
safety circuits are also built-in
to enhance reliability.
The SMB122's is well suited for
powering components commonly
found in digital consumer
electronics such as digital still
cameras/camcorders (DSC/DCC),
portable MP3/MEPG4 players, GPS
terminals, personal digital
assistants (PDAs), portable LCD
TV's, as well as the next
generation of "smart" mobile
phones. The Dynamic Voltage
Management feature is
particularly useful in XscaleTM
and ARMTM CPU applications and
where LED backlight brightness
control is desired.
The SMB122 operates directly from
+2.7V to +6.0V input making it
ideally suited for 1-cell Li-Ion
(+3.0V to +4.2V) battery
applications though line-powered
applications are easily supported
as well. Higher input voltages
(2-cell Li-Ion, +12V) can be
accommodated in many cases with
simple applications
configuration. The operating
temperature range is +0°C to
+70°C or -40°C to
+85°C and is available in
the 64-pad QFN package that is
lead-free and RoHS-standard
compliant. Available now in
production quantities, the device
is priced at $6.12 each in
quantities of 10,000 units.
Design Software and Programmer
for Prototype Development
To speed user product
development, Summit offers
customers the SMB122EV companion
evaluation board and a graphic
user interface (GUI) software so
designers can quickly see the
features and benefits and design
a prototype power supply with the
SMB122. This is a complete
development tool that lets
designers easily manipulate the
characteristics of their systems.
The SMB122EV 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 SMB122EV
automaticallygenerates 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 power 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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