Overview

Features and Benefits

  • Integrates all typical PWM controller functions
    7 PWM control signals
    Digital control loop
    Integrated programmable loop filters
    Programmable voltage line feedforward
    Dedicated soft start filter
  • Remote and local voltage sense
    Primary and secondary side current sense
    Synchronous rectifier control
    Current sharing
    OrFET control
  • I2C interface
  • Extensive fault detection and protection
  • Extensive programming and telemetry
  • Fast digital calibration
  • User accessible EEPROM
  • Qualified for automotive applications
  • Download ADP1046AW Automotive Data Sheet (pdf)

Product Details

The ADP1046A is a flexible, digital secondary side controller designed for ac-to-dc and isolated dc-to-dc secondary side applications. The ADP1046A is pin-compatible with the ADP1043A and offers several enhancements and new features, including voltage feedforward and improved loop response to maximize efficiency.

The ADP1046A is optimized for minimal component count, maximum flexibility, and minimum design time. Features include local and remote voltage sense, primary and secondary side current sense, digital pulse-width modulation (PWM) generation, current sharing, and redundant OrFET control. The control loop digital filter and compensation terms are integrated and can be programmed over the I2C interface. Programmable protection features include overcurrent protection (OCP), over- voltage protection (OVP), undervoltage lockout (UVLO), and overtemperature protection (OTP).

The built-in EEPROM provides extensive programming of the integrated loop filter, PWM signal timing, inrush current, and soft start timing and sequencing. Reliability is improved through a built-in checksum and programmable protection circuits.

A comprehensive GUI is provided for easy design of loop filter characteristics and programming of the safety features. The industry-standard I2C bus provides access to the many monitoring and system test functions.

The ADP1046A is available in a 32-lead LFCSP and operates from a single 3.3 V supply.

Applications

  • AC-to-DC power supplies
  • Isolated dc-to-dc power supplies
  • Redundant power supply systems
  • Server, storage, network, and communications infrastructure

Product Lifecycle icon-recommended Recommended for New Designs

This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

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ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

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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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Evaluation Boards Pricing displayed is based on 1-piece.
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.