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參數資料
| 型號： | SMM766FR7 |
| 廠商： | Summit Microelectronics, Inc. |
| 英文描述： | Six-Channel Active DC Output Controller, Monitor, Marginer and Sequencer with Sequence-Link⑩ |
| 中文描述： | 六通道有源直流輸出控制器，監視器，Marginer和音序器的序列連接⑩ |
| 文件頁數： | 1/32頁 |
| 文件大小： | 970K |
| 代理商： | SMM766FR7 |
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SMM766
Six-Channel Active DC Output Controller, Monitor, Marginer and Sequencer with Sequence-Link
FEATURES & APPLICATIONS
Preliminary Information
1
(See Last Page)
SUMMIT
Microelectronics, Inc.
2004 1717 Fox Drive San Jose CA 95131 Phone 408 436-9890 FAX 408 436-9897
The Summit Web Site can be accessed by “right” or “left” mouse clicking on the link:
http://www.summitmicro.com/
2086 2.1 12/13/2005
1
Extremely accurate (±0.2%) Active
DC Output Control (ADOC)
Sequence-Link provides sequencing of up to
48 channels
ADOC automatically adjusts supply output
voltage level under all DC load conditions
Monitors, controls, and margins up to 6
supplies from 0.3V to 5.5V with 1.25V Vref
Programmable power-on/-off sequencing
Operates from any intermediate bus supply
from 6V to 14V and from 2.7V to 5.5V
Monitors 12V input VDD and temperature sensor
Wide margin/ADOC range from 0.3V to VDD
Monitors two general-purpose 10-bit ADC inputs
I
2
C 2-wire serial bus for programming
configuration and monitoring status, including
10-bit ADC conversion results
2 programmable Under Voltage (UV) and Over
Voltage (OV) threshold limits for each of 11
monitored inputs
2k-bit general purpose nonvolatile memory
Applications
Monitor/control distributed and POL supplies
Multi-voltage processors, DSPs, ASICSs used in
telecom, CompactPCI or server systems
SIMPLIFIED APPLICATIONS DRAWING
The SMM766 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
SMM766 actively controls up to 6 DC/DC converters
and can be linked with up to 7 other Sequence-Link
devices to accommodate sequencing of up to 48
channels. Control of the DC-DC converters is
accomplished through the use of a Trim or Regulator
VADJ/FB pin to adjust the output voltage. For system
test, the part also controls margining of the supplies
using I
C 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 SMM766 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 6V to 14V or from 5.5V to as low as 2.7V.
The part monitors 6 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 I
C bus. A host system can communicate with the
SMM766 status register, margining and utilize 2K-bits
of nonvolatile memory.
TRIM
B
PUP
B
VM
B
TRIM_CAP
B
CAP
B
TRIM
A
PUP
A
VM
A
TRIM_CAP
A
CAP
A
SMM766
μ
P/
ASIC
V
R
H
M
3.3VIN (+2.7V to +5.5V Range)
RESET#
READY
HEALTHY
1
12VIN (+6V to +14V Range)
External
or
Internal
TEMP
SENSOR
AIN1
2.5VIN
1.2VIN
12V
3.3V
SDA
SCL
A2
I
2
C
BUS
VREF
VIN
TRIM
Vout
DC/DC
Converter A
ON/OFF
VIN
TRIM
Vout
DC/DC
Converter B
ON/OFF
External or
Internal
REFERENCE
Environmental
SENSOR
AIN2
DC/DC
Converter C, E
DC/DC
Converter D, F
2 of 6 DC-DC
Converters shown
SEQ_LINK
T
L
Figure 1 – Applications schematic using the SMM766 controller to actively control the output levels of up
to 6 DC/DC converters while also providing power-on/off, cascade sequencing and output margining.
Note: This is an applications example only. Some pins, components and values are not shown.
INTRODUCTION
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