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San
Jose, CA -- July 29, 2003 -- Summit
Microelectronics has introduced the
SMS66,
a six-channel programmable power-supply sequencer
with a rich set of monitoring and housekeeping
functions. Typical applications for the device
include server, networking and communications
equipment where carrier-class availability (ie,
99.999% up-time) is required.
The SMS66 is user-configurable to sequence as many
as six voltage supplies in any order during both
power-up and power-down transitions. This
sequencing can be set to cascade each supply
once the prior supply completes its transition,
therefore relieving the user of the need to
estimate the slew rate of each supply voltage.
Further, the user can select one of several delay
times before that supply is actuated. This
guarantees that unwanted supply crossover does not
occur.
The SMS66 monitors Vdd (2.7-5.5V), a second "high
supply" (7-15V), two external general-purpose
analog signals, and finally, the internal chip
temperature, all to 10-bit precision. Such
precision (5mV steps) is more than adequate to
handle the tightening accuracy requirements of
ever-reducing supply voltages. Any of these five
signals can be set to generate fault reporting and
if desired, a reset with either an orderly
sequenced or an immediate forced shutdown of all
supplies. Reset can also be generated in the event
of a power-up stall of programmable duration.
Finally, the SMS66 allows external use of the +/-
0.6% on-chip voltage reference.
The SMS66 is accessed using the popular
I2C bus to exercise complete control of
the board's power characteristics. This can be
programmed during production, or each time the
board is booted up, or during normal operation "on
the fly."
Design Software and Programmer for Prototype
Development
To speed user product development using the
SMS66 and Summit's other programmable products,
Summit offers customers the SMX3200
programming system.
This is a complete development system that lets
designers easily manipulate the characteristics of
their system. The SMX3200 design kit includes
menu-driven Microsoft WindowsÒ graphical
user interface (GUI) software to automate
programming tasks and also includes the necessary
hardware to interface to the parallel port of a
laptop or PC.
Once a user completes design and prototyping, the
SMX3200 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 the device
will operate properly in the end application. The
design kit software can be downloaded today from
Summit's website (www.summitmicro.com).
Design Kit for Automated Prototype
Development
An evaluation card containing the SMS66
controller, six DC/DC converters, support
circuitry, and a port for "plug and play"
programming via the SMX33200 dongle interface is
available.
Pricing and Availability
Available in volume quantities today, the SMS66
comes in a 48-pin TQFP surface-mount package.
Commercial temperature range pricing is $6.80
in 10,000 unit quantities.
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About
Summit
Summit Microelectronics supplies semiconductors
that manage power functions in communications,
networking, storage and server systems. With
Summit's programmable analog technology, customers
can achieve carrier-class availability, the highest
standard of reliability available today for
telecommunications, data communications and
Internet applications.
Founded
in 1997, Summit is headquartered in San Jose,
California. The Company is ISO 9001 certified.
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