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ADM1041A:  Secondary-Side Controller with Current Share and Housekeeping

Product Details


The ADM1041A is a secondary-side and management IC specifically designed to minimize external component counts and to eliminate the need for manual calibration or adjustment on the secondary-side controller. The principle application of this IC is to provide voltage control, current share, and housekeeping functions for single output in N+1 server power supplies.

The ADM1041A is manufactured with a 5 V CMOS process and combines digital and analog circuitry. An internal EEPROM provides added flexibility for trimming timing and voltage and selecting various functions. Programming is done via an SMBus serial port that also allows communication capability with a microprocessor or microcontroller.

The usual configuration using this IC is on a one-per-output voltage rail. Output from the IC can be wire-OR’ed together or bused in parallel and read by a microprocessor. A key feature on this IC is support for an OrFET circuit when higher efficiency or power density is required.

Applications

  • Network Servers
  • Web Servers
  • Power Supply Control

FEATURES and BENEFITS

  • Power Supply Control and Housekeeping Functions
  • Digital Calibration via Internal EEPROM
  • I2C Communications and Programming Interface
  • Comprehensive Fault Detection and Protection
  • Reduced Component Count on Secondary Side
  • Standalone or Microcontroller Control
  • Supports Server System Infrastructure Specification

Secondary Side Features

  • Generates Error Signal for Primary-side PWM
  • Output Voltage Adjustment and Margining
  • Analog Current Sharing
  • Current-limit Adjustment
  • OrFET Control
  • Programmable Soft-Start Slew Rate

Functional Block Diagram for ADM1041A

Documentation

Title Content Type File Type
ADM1041A: Secondary-Side Controller with Current Share and Housekeeping Data Sheet (Rev 0, 09/2005) (pdf, 1069 kB) Data Sheets PDF
Introduction to ADIsimPower
ADIsimPower is a smart selector and a collection of downloadable tools that produce complete and optimized power designs. Schematic, bill of materials, and performance data are customized to your specific needs in minutes.
Videos HTML
RAQs index Rarely Asked Questions HTML
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
Download files for ADIsimPower™ Voltage Regulator Design Tool
The individual Excel-based voltage regulator design tools used in ADIsimPower™.
ADIsim Design/Simulation Tools HTML
Launch of ADIsimPower Voltage Regulator Selection Vin (min) V Vout V   Find Solutions
Vin (max) V Iout A

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

ADM1041A Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
ADM1041AARQZ Status: Obsolete 24 ld QSOP 24 Ind Tube, 56 - - Y  Material Info PCN/PDN Contact ADI
ADM1041AARQZ-REEL Status: Production 24 ld QSOP 24 Ind Reel, 2500 - $3.21 Y  Material Info PCN Purchase
ADM1041AARQZ-REEL7 Status: Obsolete 24 ld QSOP 24 Ind Reel, 1000 - - Y  Material Info PCN/PDN Contact ADI
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.

ADM1041A Evaluation board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
ADM1041A-EVALZ Status: Production PCB Evaluation Board $202.40 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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