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SMM465
BLOCK
DIAGRAM
(PDF
pg
3)
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SMM465
PINOUTS
(PDF
pg
6)
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SMM465
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4-Channel
Active DC Output
Controller, Monitor,
Marginer and
Sequencer
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SMM105
Single-Channel Supply Voltage
Marginer and Active DC Output
Controller
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SMM205
Dual Channel Supply Voltage
Marginer and Active DC Output
Controller
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SMM605
Six-Channel Supply Voltage
Marginer and Active DC Output
Controller (ADOC™)
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Extremely
accurate (±0.1%) Active DC
Output Control (ADOCTM)
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Undervoltage
Lockout function (UVLO)
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ADOCTM
Automatically adjusts supply
output voltage level under all DC
load conditions
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Monitors,
controls, sequences and margins
up to 4 supplies from 0.3V to
5.5V with 1.25V Vref
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Wide
Margin/ADOC range from 0.3V to
VDD
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Programmable
Power-on/-off sequencing
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Monitors
internal temperature
sensor
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Operates
from any intermediate bus supply
from 8V to 15V and from 2.7V to
5.5V
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Monitors
12V input and VDD
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Monitors
two general-purpose 10-bit ADC
inputs
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Programmable
threshold limits (2 OV/2 UV) for
each monitored input
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Programmable
RESET, HEALTHY and FAULT
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4k-bit
general purpose nonvolatile
memory
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I2C
2-wire serial bus for programming
configuration and monitoring
status, including 10-bit ADC
conversion results
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Monitor/Control
Distributed and POL
Supplies
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Multi-voltage
Processors, DSPs, ASICs used in
Telecom, CompactPCI or server
systems
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INTRODUCTION
The
SMM465 is an Active DC Output power supply
Controller (ADOC™) that monitors,
margins and cascade sequences. The ADOC
feature is unique and maintains extremely
accurate settings of system supply
voltages to within ±0.2% under full
load. The device actively controls up to
four DC/DC converters that use a Trim or
Regulator VADJ/FB pin to adjust the output
voltage. For system test, the part also
controls margining of the supplies using
I2C commands. It can margin supplies with
either positive or negative control within
a range of 0.3V to VDD depending on the
specified range of the converter. The
SMM465 also intelligently sequences or
cascades the power supplies on and off in
any order using enable outputs with
programmable polarity. It can operate off
any intermediate bus supply ranging from
8V to 15V or from 5.5V to as low as 2.7V.
The part monitors four power supply
channels as well as VDD, 12V input, two
general-purpose analog inputs and an
internal temperature sensor using a 10-bit
ADC. The 10-bit ADC can measure the value
on any one of the monitor channels and
output the data via the I2C bus. A host
system can communicate with the SMM465
status register, optionally control
Power-on/off, margining and utilize
4K-bits of nonvolatile memory.
(continued
in
PDF)
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ORDERING
INFORMATION
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NOTE
1 - This is a
Preliminary
Information
data sheet that
describes a
Summit product
currently in
development. It
is meant solely
as a product
description and
should not be
used as a
design
tool.
SUMMIT
Microelectronics,
Inc. reserves
the right to
make changes to
the products
contained in
this
publication in
order to
improve design,
performance or
reliability.
SUMMIT
Microelectronics,
Inc. assumes no
responsibility
for the use of
any circuits
described
herein, conveys
no license
under any
patent or other
right, and
makes no
representation
that the
circuits are
free of patent
infringement.
Charts and
schedules
contained
herein reflect
representative
operating
parameters, and
may vary
depending upon
a user’s
specific
application.
While the
information in
this
publication has
been carefully
checked, SUMMIT
Microelectronics,
Inc. shall not
be liable for
any damages
arising as a
result of any
error or
omission.
SUMMIT
Microelectronics,
Inc. does not
recommend the
use of any of
its products in
life support or
aviation
applications
where the
failure or
malfunction of
the product can
reasonably be
expected to
cause any
failure of
either system
or to
significantly
affect their
safety or
effectiveness.
Products are
not authorized
for use in such
applications
unless SUMMIT
Microelectronics,
Inc. receives
written
assurances, to
its
satisfaction,
that: (a) the
risk of injury
or damage has
been minimized;
(b) the user
assumes all
such risks; and
(c) potential
liability of
SUMMIT
Microelectronics,
Inc. is
adequately
protected under
the
circumstances.
Revision 1.1 -
This document
supersedes all
previous
versions.
Please check
the Summit
Microelectronics
Inc. web site
at
www.summitmicro.com
for data sheet
updates.
ADOC™ is a
registered
trademark of
Summit
Microelectronics
Inc.
I2C is a
trademark of
Philips
Corporation.
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