|
|
|
 |
| SMM205
Dual Channel Supply
Voltage Marginer and
Active DC Output
Controller
|
|
|
|
SMM105
Single-Channel
Supply Voltage Marginer and
Active DC Output Controller
|
|
|
|
Extremely
accurate (±0.1%) Active DC
Output Control
(ADOC™)
|
|
|
ADOC
Automatically adjusts supply
output voltage level under all DC
load conditions
|
|
|
Capable
of margining supplies with trim
inputs using either positive or
negative trim pin control
|
|
|
Wide
Margin/ADOC range from 0.3V to
VDD
|
|
|
Uses
either an internal or external
VREF
|
|
|
Operates
from any intermediate bus supply
from 8V to 15V and from 2.7V to
5.5V
|
|
|
Programmable
START and READY pins
|
|
|
Two
programmable general purpose
monitor sensors - UV and OV with
FAULT Output Flag
|
|
|
General
Purpose 1k EEPROM with Write
Protect
|
|
|
I2C
2-wire serial bus for programming
configuration and monitoring
status.
|
|
|
28
pad QFN or 25 ball Ultra
CSP™ (Chip-Scale)
package
|
|
|
In-system
test and control of Point-of-Load
(POL) Power Supplies for
Multi-voltage Processors, DSPs
and ASICs
|
|
|
Enterprise
and edge routers, servers,
Storage Area Networks
|
|
INTRODUCTION
The SMM105 actively controls
the output voltage level of a
DC/DC converter that uses 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
I2C 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
0.3V to VDD. The SMM105 supply
can be from 12V, 8V, 5V or 3.3V
to as low as 2.7V to accommodate
any intermediate bus supply.
The voltage settings (margin
high/low and nominal) are
programmed into nonvolatile
memory through the industry
standard I2C 2-wire data bus. The
I2C bus is also used to enable
margin high, margin low, ADOC or
normal operation. When margining,
the SMM105 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. The SMM105 ADOC
will continue to monitor and
adjust the channel output at the
specified level.
[continued
in the
PDF]
|
SMM105
CONTROLLER INTERNAL
BLOCK DIAGRAM
|
|
|
|
|
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 1.9 - This
document supersedes all
previous versions.
ADOC™ is a
trademark of Summit
Microelectronics,
Inc.
I2C is a
trademark of Philips
Corporation.
|
|
Copyright©1999- Summit
Microelectronics,
Inc.
|
|
|
