ADM1075-1ACPZ(RevA) 查看數據表（PDF） - Analog Devices

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ADM1075-1ACPZ
(Rev.:RevA)

−48 V Hot Swap Controller and Digital Power Monitor with PMBus Interface

Analog Devices 

ADM1075

Data Sheet

TABLE OF CONTENTS

Features .............................................................................................. 1

ADM1075 Information Commands........................................ 31

Applications....................................................................................... 1

Status Commands ...................................................................... 31

Product Highlights ........................................................................... 1

GPO and Alert Pin Setup Commands .................................... 32

Functional Block Diagram .............................................................. 1

Power Monitor Commands ...................................................... 32

Revision History ............................................................................... 3

Warning Limit Setup Commands ............................................ 33

General Description ......................................................................... 4

PMBus Direct Format Conversion .......................................... 34

Specifications..................................................................................... 5

Voltage and Current Conversion Using LSB Values.............. 35

Serial Bus Timing ......................................................................... 9

ADM1075 Alert Pin Behavior ...................................................... 36

Absolute Maximum Ratings.......................................................... 10

Faults and Warnings .................................................................. 36

Thermal Resistance .................................................................... 10

Generating an Alert ................................................................... 36

ESD Caution................................................................................ 10

Handling/Clearing an Alert ...................................................... 36

Pin Configuration and Function Description ............................ 11

SMBus Alert Response Address ............................................... 37

Typical Performance Characteristic............................................. 13

Example Use of SMBus Alert Response Address ................... 37

Theory of Operation ...................................................................... 20

Digital Comparator Mode......................................................... 37

Powering the ADM1075............................................................ 20

PMBus Command Reference........................................................ 38

Current Sense Inputs.................................................................. 21

Register Details ............................................................................... 39

Current Limit Reference............................................................ 21

Operation Command Register ................................................. 39

Setting the Current Limit (ISET) ............................................. 22

Clear Faults Register .................................................................. 39

Soft Start ...................................................................................... 22

PMBus Capability Register ....................................................... 39

Constant Power Foldback (PLIM) ........................................... 22

IOUT OC Warn Limit Register................................................ 39

TIMER ......................................................................................... 23

VIN OV Warn Limit Register................................................... 39

Hot Swap Fault Retry ................................................................. 24

VIN UV Warn Limit Register................................................... 39

Fast Response to Severe Overcurrent ...................................... 24

PIN OP Warn Limit Register.................................................... 40

UV and OV ................................................................................. 24

Status Byte Register .................................................................... 40

PWRGD....................................................................................... 25

Status Word Register.................................................................. 40

DRAIN......................................................................................... 25

IOUT Status Register ................................................................. 41

SPLYGD ....................................................................................... 25

Input Status Register .................................................................. 41

LATCH......................................................................................... 25

Manufacturing Specific Status Register................................... 42

SHDN........................................................................................... 25

Read EIN Register ...................................................................... 43

RESTART..................................................................................... 25

Read VIN Register...................................................................... 43

FET Health .................................................................................. 26

Power Monitor ............................................................................ 26

Isolation ....................................................................................... 26

PMBus Interface ............................................................................. 28

Device Addressing...................................................................... 28

SMBus Protocol Usage............................................................... 28

Packet Error Checking............................................................... 28

SMBus Message Formats ........................................................... 29

Group Commands...................................................................... 30

Hot Swap Control Commands ................................................. 31

Read IOUT Register................................................................... 43

Read PIN Register ...................................................................... 43

PMBus Revision Register .......................................................... 43

Manufacturing ID Register ....................................................... 44

Manufacturing Model Register ................................................ 44

Manufacturing Revision Register............................................. 44

Peak IOUT Register ................................................................... 44

Peak VIN Register ...................................................................... 45

Peak VAUX Register .................................................................. 45

Power Monitor Control Register.............................................. 45

Rev. A | Page 2 of 52

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