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ADM1041A:  Secondary-Side Controller with Current Share and Housekeeping

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 ...More

ADM1041A:  Secondary-Side Controller with Current Share and Housekeeping

Product Description

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

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    • 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

    Similar Products

    arrow View Full Interactive Product Selection Table
    Part# Vin (V) I2C Interface EEPROM Current Share Control OrFET Control Housekeeping Protection Product Description Package Widest Temp Range (Deg C) Price* (1000-4999)
    ADM1041A 5 Yes Yes Analog Yes 5*Monitors, ACOK, ACSNS1/2, ALERT, POK, PSON Internal & External, OTP, OVP, UVP & OCP Secondary-Side Controller w/ Current Sharing, Housekeeping, & Digital Communications Bus QSOP 24 -40 to +85 $3.21
    ADP1043 3.3 Yes Yes Analog & Digital Yes ACSNS, FLAGIN, PGOOD1, PGOOD2, PSON Internal & External, OTP, OVP, Programmable, UVP & OCP Digital Controller for Isolated Power Supply Applications LFCSP 32 -40 to +85 -
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    * The pricing listed here is provided only for budgetary purposes as recommended list price in U.S. Dollars in the United States ex factor per unit for the stated volume. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.
    ** Pricing is currently unavailable. Click on the product number to see the Product Page for additional information.

    Pricing, Packaging & Availability

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    Package Description
    The package for this IC (i.e. DIP, SOIC, BGA). An Evaluation Board is a board engineered to show the performance of the model, the part is included on the board.

    For detailed drawings and chemical composition please consult our  Package Site

    Pin Count
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    Temperature Range
    This is the acceptable operating range of the device. The various ranges specified are as follows:
    • Commercial: 0 to +70 degrees Celsius
    • Military : -55 to +125 degrees Celsius
    • Industrial: Temperature ranges may vary by model. Please consult the datasheet for more information.
    • Automotive: -40 to +125 degrees Celsius
    Price
    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.

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    View PCN
    This is the list of Product Change Notifications (PCN) published on the web for this model. Click on the link to access PCN Information.Only select pre-2009 PCN�s are available on-line. To obtain a pre-2009 PCN, contact your ADI Sales Rep. For more information on ADI's PCN process, please visit our PCN Policy Statement page

    *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.
    **Sample availability may be better than production availability. Please enter samples into your cart to check sample availability.