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ADM1075:  −48 V Hot Swap Controller and Digital Power Monitor with PMBus Interface

Product Details

Product Status:Recommended for New Designs

The ADM1075 is a full feature, negative voltage, hot swap controller with constant power foldback and high accuracy digital current and voltage measurement that allows boards to be safely inserted and removed from a live -48 V backplane. The part provides precise and robust current limiting and protection against both transient and nontransient short circuits and overvoltage and undervoltage conditions. The ADM1075 typically operates from a negative voltage of -35 V to -80 V and, due to shunt regulation, has excellent voltage transient immunity. The operating range of the part is flexible due to the shunt regulator, and the part can be powered directly by a 10 V rail to save shunt power dissipation (see the Powering the ADM1075 section for more details).

A full-scale current limit of 25 mV or 50 mV can be selected by choosing the appropriate model. The maximum current limit is set by the combination of the sense resistor, RSENSE, and the input voltage on the ISET pin, using external resistors. This allows fine tuning of the trip voltage so that standard sense resistors can be used. Inrush current is limited to this programmable value by controlling the gate drive of an external N-channel FET. A builtin soft start function allows control of the inrush current profile by an external capacitor on the soft start (SS) pin.

Refer to the datasheet for more information.

PRODUCT HIGHLIGHTS

  1. Constant Power Foldback.
    Maximum FET power set by a PLIM resistor divider. This eases complexity when designing to maintain FET SOA.
  2. Adjustable Current Limit.
    The current limit is adjustable via the ISET pin allowing for the use of a standard value sense resistor.
  3. 12-Bit ADC.
    Accurate voltage, current, and power measurements. Also enables calculation of energy consumption over time.
  4. PMBus Interface.
    PMBus fast mode compliant interface used to read back status and data registers and set warning and fault limits.
  5. Fault Recording.
    Latched status registers provide useful debugging information to help trace faults in high reliability systems.
  6. Built-In Soft Start.
    Soft start capacitor controls inrush current profile with di/dt control.

APPLICATIONS

  • Telecommunication and data communication equipment
  • Central office switching
  • -48 V distributed power systems
  • Negative power supply control
  • High availability servers

FEATURES and BENEFITS

  • Constant power foldback for FET SOA protection
  • Precision (<1.0%) current and voltage measurement
  • Controls inrush and faults for negative supply voltages
  • Suitable for wide input range due to internal shunt regulator
  • 25 mV/50 mV full-scale sense voltage
  • Fine tune current limit to allow use of standard sense resistor
  • Soft start inrush current limit profiling
  • 1% accurate UVH and OV pins, 1.5% accurate UVL pin
  • PMBus interface for control, telemetry, and fault recording
  • 28-lead TSSOP
  • -40°C to 105°C junction temperature (TJ) operating range

Functional Block Diagram for ADM1075

Documentation

Title Content Type File Type
ADM1075: −48 V Hot Swap Controller and Digital Power Monitor with PMBus Interface Data Sheet (Rev C, 04/2014) (pdf, 759 kB) Data Sheets PDF
AN-1135: ADC Sampling Information ADM1275/ADM1276/ADM1075  (pdf, 171 kB) Application Notes PDF
Webcast: Hot Swap Design, How to Get it Right
This webcast closely examines the components of a hot swap design and find out what's critical to getting it right.
Webcasts WEBCAST
UG-548: ADM1075 Mini Evaluation Board User Guide  (pdf, 664 kB) User Guides PDF
UG-353: Hot Swap and Power Monitor Software  (pdf, 478 kB) User Guides PDF
UG-404: USB-SDP-CABLEZ Serial Interface Board  (pdf, 536 kB)
The USB-SDP-CABLEZ is primarily used to communicate with certain Analog Devices evaluation boards.
User Guides PDF
UG-304: Evaluating the ADM1075 −48 V Hot-Swap Controller and Digital Power Monitor with PMBus Interface  (pdf, 1036 kB) User Guides PDF
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
Hot Swap Controller Simulaton Model
Simulation model to help users simulate their designs with ADM1275 or ADM1276 hot swap controls.
SPICE Models All HTML
Hot-Swap & Power Monitoring Evaluation Software
Requires the ADMxxxx Common Run-time to be installed in order to provide driver support for the USB-SMBUS-CABLEZ and USB-SDP-CABLEZ interface connectors.
Evaluation Software HTML
ADMxxxx Common Run-Time
This run-time installer is shared between the SuperSequencer, ADM1175-92, and the Hot Swap and Power Monitor tools. Contains driver support for the USB-SMBUS-CABLEZ and USB-SDP-CABLEZ interface connectors.
Evaluation Software HTML

Evaluation Kits & Symbols & Footprints

Evaluation Boards & KitsView the Evaluation Boards and Kits page for documentation and purchasing

Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

SampleSample & Buy

Price, packaging, availability

ADM1075 Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
ADM1075-1ACPZ Status: Production 28 ld LFCSP (5x5mm w/3.40mm EP) 28 Ind Tray, 490 $5.10 $4.99 Y  Material Info PCN Purchase Sample
ADM1075-1ACPZ-RL7 Status: Production 28 ld LFCSP (5x5mm w/3.40mm EP) 28 Ind Reel, 1500 - $4.99 Y  Material Info PCN Purchase
ADM1075-1ARUZ Status: Production 28 ld TSSOP (4.4mm) 28 Ind Tube, 50 $5.10 $4.99 Y  Material Info PCN Purchase Sample
ADM1075-1ARUZ-RL7 Status: Production 28 ld TSSOP (4.4mm) 28 Ind Reel, 1000 - $4.99 Y  Material Info PCN Purchase
ADM1075-2ACPZ Status: Production 28 ld LFCSP (5x5mm w/3.40mm EP) 28 Ind Tray, 490 $5.10 $4.99 Y  Material Info PCN Purchase Sample
ADM1075-2ACPZ-RL7 Status: Production 28 ld LFCSP (5x5mm w/3.40mm EP) 28 Ind Reel, 1500 - $4.99 Y  Material Info PCN Purchase
ADM1075-2ARUZ Status: Production 28 ld TSSOP (4.4mm) 28 Ind Tube, 50 $5.10 $4.99 Y  Material Info PCN Purchase Sample
ADM1075-2ARUZ-RL7 Status: Production 28 ld TSSOP (4.4mm) 28 Ind Reel, 1000 - $4.99 Y  Material Info PCN Purchase
Price Table Help

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

ADM1075 Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
EVAL-ADM1075MEBZ Status: Production Mini Evaluvation kit for ADM1075 $180.00 Yes -
EVAL-ADM1075EBZ Status: Production 350W Hot Swap Evaluation kit using ADM1075-1 $150.00 Yes -
USB-SDP-CABLEZ Status: Production USB to Serial I/O Interface. One is required and can support multiple eval kits. $89.00 Yes -

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.

Check Inventory & Purchase

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