MAX34451 12-Channel Sequencer/Marginer Datasheet

MAX34451 Datasheet, PDF, Equivalent


Part Number

MAX34451

Description

PMBus 16-Channel V/I Monitor and 12-Channel Sequencer/Marginer

Manufacture

Maxim Integrated

Total Page 30 Pages
Datasheet
Download MAX34451 Datasheet


MAX34451
Click here for production status of specific part numbers.
MAX34451
EVALUATION KIT AVAILABLE
PMBus 16-Channel V/I Monitor and
12-Channel Sequencer/Marginer
General Description
The MAX34451 is a power-supply system manager
that is capable of monitoring up to 16 different voltage
rails or currents and is also capable of sequencing and
margining up to 12 power supplies. The system manager
monitors the power-supply output voltages and currents
and constantly checks them for user programmable
over and under threshold limits. If a fault is detected, the
device automatically shuts down the system in an orderly
fashion. The device can sequence the supplies in any
order at both power-up and power-down. The device has
the ability to close-loop margin the power-supply output
voltages up or down to a user-programmable level. The
device contains an internal temperature sensor and can
support up to four external remote temperature sensors.
Once configured, the device can operate autonomously
without any host intervention.
Applications
● Network Switches/Routers
● Base Stations
● Servers
● Smart Grid Network Systems
PMBus is a trademark of SMIF, Inc.
Ordering Information and Typical Operating Circuit appear
at end of data sheet.
Benefits and Features
● Integration Enables Management of Multiple Power
Supplies to Maximize System Performance
• 16 Channels of Voltage or Current Monitoring
12 Channels of Sequencing and Margining (8
PWM, 4 External Current DACs (1 x DS4424),
and Sequencing
Expandable Channel Operation with Parallel
Devices
Remote Ground Sensing Improves Measurement
Accuracy
Programmable Up and Down Time-Based or
Event-Based Sequencing
Dual Sequencing Loops
Configurable Combinatorial Logic Supporting Up to
16 GPIs and 20 GPOs
Automatic Closed-Loop Margining
No External Clocking Required
PMBus™-Compliant Command Interface
● Fast, Reliable Control and Fault Detection Improves
System Reliability
Fast Minimum/Maximum Threshold Excursion
Detection
Supports Up to 5 Temperature Sensors (1 Internal
and 4 Remote)
Fault Detection on All Temperature Sensors
Reports Peak, Minimum, and Average Levels for a
Number of Parameters
Programmable Alarm Outputs
On-Board Nonvolatile Black Box Fault Logging and
Default Configuration Setting
● I2C-/SMBus-Compatible Serial Bus with Bus
Time-Out Function Simplifies Additional Temperature
Sensors and DACs to the MAX34451
● +3.0V to +3.6V Supply Voltage
19-6642; Rev 9; 10/19

MAX34451
MAX34451
PMBus 16-Channel V/I Monitor and
12-Channel Sequencer/Marginer
TABLE OF CONTENTS
General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Benefits and Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Recommended Operating Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Package Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
56 TQFN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
I2C/SMBus Interface Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Typical Operating Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Typical Operating Characteristics (continued) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Expanded Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Detailed Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
PMBus/SMBus Address Select . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
SMBus/PMBus Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
SMBus/PMBus Operation Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Group Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Group Command Write Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
ALERT and Alert Response Address (ARA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Alert Response Address (ARA) Byte Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Host Sends or Reads Too Few Bits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Host Sends or Reads Too Few Bytes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Host Sends Too Many Bytes or Bits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Host Reads Too Many Bytes or Bits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Host Sends Improperly Set Read Bit in the Slave Address Byte . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Unsupported Command Code Received/Host Writes to a Read-Only Command . . . . . . . . . . . . . . . . . . . . . . . . . 26
Invalid Data Received . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Host Reads from a Write-Only Command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
SMBus Timeout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
PMBus Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
PMBus Protocol Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Data Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
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Features Click here for production status of spec ific part numbers. MAX34451 EVALUATION KIT AVAILABLE PMBus 16-Channel V/I Mon itor and 12-Channel Sequencer/Marginer General Description The MAX34451 is a power-supply system manager that is cap able of monitoring up to 16 different v oltage rails or currents and is also ca pable of sequencing and margining up to 12 power supplies. The system manager monitors the power-supply output voltag es and currents and constantly checks t hem for user programmable over and unde r threshold limits. If a fault is detec ted, the device automatically shuts dow n the system in an orderly fashion. The device can sequence the supplies in an y order at both power-up and power-down . The device has the ability to close-l oop margin the power-supply output volt ages up or down to a user-programmable level. The device contains an internal temperature sensor and can support up t o four external remote temperature sens ors. Once configured, the device can operate autonomously witho.
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