|
|
San
Jose, Calif. - June 22, 2005
- Summit
Microelectronics has expanded
its communications power
management family with the
introduction of an innovative
power supply management
controller. The SMT4504
combines three of the most
essential power management
functions - voltage tracking,
supply sequencing and voltage
monitoring - in a single chip.
Furthermore, this new device
eliminates the need for external
MOSFET switches, thereby reducing
board space and cost. Using
Summit's SMT4504, system
designers can tailor their power
control circuit to the system
requirements by digitally
programming the most essential
functions and parameters.
The SMT4504 provides a complete
quad supply rail management,
while incorporating a level of
programmability and integration
previously missing in power
management offerings. The device
can track or sequence up to four
external DC/DC converter ICs with
programmable sequence ordering
and delay times, without the need
for any external components. In
addition, when supplies are
assigned to the same sequence
position, the SMT4504 allows
these rails to be tracked at the
same or different (ratiometric)
slew rates - a very useful
feature for applications
requiring supplies to be started
at the same time but to ramp up
at different rates.
The SMT4504 is the first true
"loss-less tracker" on the
market, eliminating the need for
external series MOSFETs by
interfacing directly to the
converter's TRIM input pin. This
allows designs to reduce board
space, component count and power
dissipation. Moreover, the
elimination of MOSFET switches
results in improved load
regulation, a critical
performance parameter in
applications utilizing low core
voltages.
Continuing the tradition of
offering high levels of design
flexibility, the SMT4504 allows
many of the essential parameters
to be programmed and therefore
adjusted to new design
requirements. This allows
original equipment and original
design manufacturers (OEMs and
ODMs) to reduce their development
time and engineering investment
and bring products to market
faster and more reliably.
The SMT4504 incorporates Summit's
proprietary "Link" function that
provides seamless expanding
operation when more than 4
supplies are involved. This
allows several SMT4504 devices to
control up to 48 power supplies
in a single system. Furthermore,
it offers the ability to
accurately (1%) monitor each
channel for detecting under- and
over-voltage conditions. These
voltage trip-points, as well as
the fault trigger conditions and
output polarities, are
programmable, allowing for great
design flexibility. Programmable
slew rate control is also
available to enable power supply
rails to rise and fall at
different rates.
The SMT4504 can work with
point-of-load (POL) and
monolithic DC/DC converters
making it ideal for modern
designs that require tracking,
sequencing and voltage detection.
Applications include
Datacom/Telecom equipment,
servers, storage and other
equipment utilizing multi-voltage
CPUs, DSPs and ASICs.
Programming is achieved via a
convenient I2C bus and
configuration data is safely
stored in non-volatile EEPROM
memory. 4k bytes of EEPROM memory
are available for user data
storage allowing customers to
store data, such as board serial
number, manufacturing date,
revision number, etc. The devices
can be programmed during
development and then used in a
"fixed" configuration or they may
be re-programmed in-system via
the I2C interface.
Packaging, Pricing, and
Availability
The SMT4504 device can operate
directly from a +2.7V to +5.5V
logic supply rail or from an 8V
or 12V intermediate bus. It is
offered in both the commercial
and the industrial operating
temperature range and packaging
is the 48-lead TQFP. Available
now in production quantities, the
SMT4504 is priced at $6.80 each
in the commercial temperature
range and $9.63 each in the
industrial temperature range in
quantities of 1,000 units.
Design Software and Programmer
for Prototype Development
To speed user product
development, Summit offers
customers the SMT4504 companion
evaluation board is provided with
a graphical user interface (GUI)
software so designers can quickly
see the features and benefits and
design a prototype power supply
system with the SMT4504. This is
a complete development tool that
lets designers easily manipulate
the characteristics of their
systems. The SMT4504EV design
kits 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 SMT4504 kit
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).
|
|
|
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.
|
