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參數(shù)資料
| 型號(hào)： | SMS66FR15 |
| 廠商： | Summit Microelectronics, Inc. |
| 英文描述： | Six-Channel Power Supply Supervisor and Cacsade Sequence Controller |
| 中文描述： | 6通道電源監(jiān)控和Cacsade序控制器 |
| 文件頁數(shù)： | 1/26頁 |
| 文件大小： | 1039K |
| 代理商： | SMS66FR15 |
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SMS66
Six-Channel Power Supply Supervisor and Cacsade Sequence Controller
FEATURES & APPLICATIONS
Very accurate monitor function – 5mV steps
Monitors and sequences up to six supplies
Programmable Power-on/-off sequencing
Monitors internal temperature sensor
Operates from 12V or 3.3V supply
Monitors 12V input and VDD
Monitors two general-purpose 10-bit ADC inputs
Programmable threshold limits (2 OV/2 UV) for
each monitored input
Programmable RESET, HEALTHY and FAULT
functions
4k-bit general purpose nonvolatile memory
I
2
C 2-wire serial bus for programming
configuration and monitoring status, including
10-bit ADC conversion results
Applications
Monitor and Sequence Distributed Power and
Point of Load Power Supplies
Multi-voltage Processors, DSPs, ASICs used in
Telecom, CompactPCI or server systems
Preliminary Information
1
(See Last Page)
SUMMIT
Microelectronics, Inc. 2003
300 Orchard City Drive, #131 Campbell CA 95006
Phone 408 378-6461 FAX 408 378-6596 www.summitmicro.com
2070 1.0 7/16/03
1
INTRODUCTION
The SMS66 is a very accurate programmable power
supply supervisor that monitors and sequences. It
controls sequencing time and position of up to six
isolated or non-isolated distributed or POL DC/DC
converters. The monitor supervisory function has two
independent UV and OV settings for each supply and
can be set in 5mV steps. The SMS66 also sequences
the power supplies in any order using enable outputs
with programmable polarity.
The SMS66 monitors six 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 input channels and output the
conversion data via the I
C bus.
Using the I
2
C interface, a host system can
communicate with the SMS66 status register,
optionally control Power-on/off, and utilize 4 K-bits of
nonvolatile memory.
SIMPLIFIED APPLICATIONS DRAWING
PUP
F
VM
F
PUP
A
VM
A
SMS66
μ
P/
DSP/
NPU/
FPGA
V
R
H
M
VDD (+2.7V to +5.5V Range)
RESET
DONE
HEALTHY
1
12VIN (+8V to +15V Range)
External
or
Internal
TEMP
SENSOR
AIN1
VREF_ADC
2.5VIN
1.2VIN
12V
SDA
SCL
I
2
C
BUS
3.3V
A2
VREF_OUT
VIN
Vout
DC/DC
Converter A
ON/OFF
VIN
Vout
DC/DC
Converter F
ON/OFF
External or
Internal
REFERENCE
Figure 1 – Applications Schematic using the SMS66 Controller to cascade sequence up to six DC/DC
Converters while also providing supervisory functions.
Note: This is an applications example only. Some pins, components and values are not shown.
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