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San
Jose, CA -- May 25, 2004 --
Summit Microelectronics has
announced availability of the
SMM465
four-channel precision voltage
controller offering margining,
the industry’s most accurate
active control during ongoing
operation (+/-0.2% guaranteed),
cascaded sequencing , and
monitoring. Summit’s
precision controller family is
now comprised of the
SMM105,
SMM205,
SMM465
and SMM665
- single, dual, quad and
six-channel devices.
The SMM465 is based on the
award-winning SMM665
(Analog
Zone 2003 Power Management
Product of the
Year).
The SMM465 utilizes an
engineering concept created by
Summit called Active DC Output
Control (ADOCTM) and introduced
with the SMM665. The ADOCTM
function intelligently maintains
the output voltage of up to four
DC/DC converters on the user's
board, dramatically improving
voltage accuracy in ongoing
system use &endash; typically to
+/-0.1% of voltage output, and
guaranteed to +/- 0.2%. This
compares to several percent or
more in DC/DC converters when not
using Summit ADOCTM control.
The SMM465 is highly useful in
circuit board production to
perform "margining." This is the
temporary adjusting of each of
the four DC/DC converter supply
voltages up to +/-10% in any
combination, up or down -- so
that sensitivity of the system to
power supply changes can be
determined. Margining is usually
done board-by-board in production
to test for these manufacturing
variations, and is highly useful
in wringing sensitivities out of
prototype boards before
production launch. A growing
number of leading suppliers of
computer, industrial,
communications and datacomm
products have mandated margining
in production for all of the
circuit boards in their
products.
The SMM465 can be configured to
sequence up to four voltage
supplies in any order during both
power-up and power-down
transitions. This sequencing can
be set by the user to cascade
each supply as the prior supply
completes its transition,
therefore eliminating the
guesswork of estimating the slew
rate of each supply voltage
depending on its loading, and
specifying a safe delay time
before the next supply can be
actuated. Cascaded sequencing
guarantees that unwanted
crossover will not occur.
The SMM465 can be accessed by the
popular I2C bus to exercise
complete control of the board's
power characteristics. This can
be done during production, or
each time that 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 SMM465 and
Summit's other programmable
products, Summit offers customers
the SMX3200
programming
system.
This is a complete development
tool that lets designers easily
manipulate the characteristics of
their system. The SMX3200 design
kit includes menu-driven
Microsoft WindowsÒ graphic
user interface (GUI) software to
automate programming tasks and
also includes all necessary
hardware to interface to the
parallel port of a laptop or PC.
This system has seen widespread
acceptance by users since it was
introduced four years ago.
Once a user completes design and
prototyping, 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
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).
DESIGN KIT FOR AUTOMATED
PROTOTYPE DEVELOPMENT
An evaluation card containing the
SMM465 controller, four DC/DC
converters, all required
associated circuitry, and a port
for "plug and play" programming
via the SMX3200 dongle interface
is available. A three-digit
digital voltmeter is required to
see the voltage accuracy
enhancement provided by the
SMM465 -- typically as small as
+/- 0.1% error (guaranteed to +/-
0.2%), compared to the +/-2% or
even +/-4% variation of typical
converter bricks when the SMM465
is removed.
PRICING AND
AVAILABILITY
Available in volume quantities
today, the SMM465 comes in a
48-pin TQFP surfacemount package.
Pricing of the SMM465 is $6.30
10,000 unit quantities and of the
SMM665 is $8.40.
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ABOUT
SUMMIT MICROELECTRONICS
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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