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SMM605
BLOCK DIAGRAM (PDF pg
3)
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SMM605
PINOUT (PDF pg
5)
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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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SMM665 Six-Channel
Active DC Output Controller, Monitor,
Marginer and Sequencer |
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SMM605 Six-Channel Supply Voltage Marginer and Active DC
Output Controller (ADOC™)
FEATURES
• |
Extremely
accurate (0.2%, typ.) Active
DC Output Control |
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Six
channel control of DC/DC
converters |
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ADOC
Automatically adjusts supply
output voltage level under all DC
load conditions |
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Capable
of margining supplies with trim
inputs using either positive or
negative trim pin
control |
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Wide
Margin/ADOC range from 0.35V to
VDD |
• |
Uses
either an internal or external
VREF |
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Operates
from any intermediate bus supply
from 6V to 14V and from 2.7V to
5.5V |
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Programmable START and READY pins |
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General
Purpose 4k EEPROM with Write
Protect |
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I2C 2-wire serial bus for programming configuration and monitoring status. |
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48 lead TQFP package |
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APPLICATIONS
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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 SMM605 actively controls the output
voltage level of up to six DC/DC
converters that use a 'Trim' or 'VADJ/FB'
pin to adjust the output. An Active DC
Output Control (ADOC™) feature is
used during normal operation to maintain
extremely accurate settings of supply
voltages and, during system test, to
control margining of the supplies using
the industry standard I2C 2-wire data bus
commands. Total accuracy with a ±0.1%
external reference is ±0.2%, and
±0.5% using the internal reference.
The device can margin supplies with either
positive or negative trim pin control
within a range of 0.35V to VDD. The SMM605
supply can range from 2.7V to 5.5V or 6V
to 14V to accommodate any intermediate bus
supply.
The voltage settings (margin high/low and
nominal) are programmed into nonvolatile
memory. The I2C bus is used to enable
margin high, margin low, ADOC or normal
operation. When margining, the SMM605 will
check the voltage output of the converter
and make adjustments to the trim pin via a
feedback loop to bring the voltage to the
margin setting. A margining status
register is set to indicate that
the
system is ready for test.
[continued
in the
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 pre-production with limited characterization.
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 1.2 - This
document supersedes all
previous versions.
Please check the Summit
Microelectronics Inc.
web site for data sheet
updates.
ADOC™ is a
trademark of Summit
Microelectronics, Inc.,
I2C is a trademark of
Philips
Corporation. |
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Copyright©1999-
Summit Microelectronics, Inc.
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