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ADP1046A:  Digital Controller for Isolated Power Supply Applications

Product Details

Product Status:Recommended for New Designs

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

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)

Functional Block Diagram for ADP1046A

Documentation

Title Content Type File Type
ADP1046A: Digital Controller for Isolated Power Supply Applications Data Sheet (Rev 0, 02/2013) (PDF, 1831 kB) Data Sheets PDF
AN-1253: Layout Considerations for Digital Power Management (ADP1046A)  (pdf, 685 kB) Application Notes PDF
Complete Isolated DC to DC Converter Development Platform
Featuring the ADP1046A. See a complete isolated DC-to-DC converter development platform that simplifies customized control algorithms of a full-bridge converter w/ synchronous rectifiers & isolated gate drivers using high level graphical I/F tools.
Videos HTML
Using the ADP1046A Digital Power Controller Videos HTML
UG-589: Interleaved Two-Switch Forward Topology Featuring the ADP1046A  (pdf, 4443 kB) User Guides PDF
ADP1046A LLC Resonant Converter with Synchronous Rectification  (pdf, 1524 kB)
This application note consists of the ADP1046A in an isolated DC/DC switching power supply that is LLC resonant topology with synchronous rectification. The circuit is designed to provide a rated output load of 12V/50A from a nominal input voltage of 400VDC.
Power Reference Designs PDF
ADP1046A Wide Input Range, Full Bridge Phase Shifted Topology  (pdf, 9523 kB)
This application note consists of the ADP1046A in a DC/DC switching power supply in a full bridge phase shifted topology with synchronous rectification. This is a wide input range, wide ZVS range (Zero Voltage Switching) converter designed to provide a rated load of 48V/12.5A from an nominal input voltage source of 385VDC.
Power Reference Designs PDF
ADP1046A 100 Watt Evaluation Kit  (pdf, 5868 kB)
This evaluation board features the ADP1046A in a DC/DC switching power supply in full bridge topology with synchronous rectification. The circuit is designed to provide a rated load of 12V/8A from an input voltage source of 36 to 60VDC.
Power Reference Designs PDF
ADP1046A 300W Quarter Brick Module  (pdf, 4766 kB)
This application note consists of the ADP1046A in a typical DC/DC switching power supply in a full bridge topology with synchronous rectification. The circuit is designed to provide a rated load of 12V/25A from an input voltage source of 42V to 60VDC. The ADP1046 is used to provide functions such as the output voltage regulation, output over voltage and current protection, primary cycle by cycle protection, and over temperature protection.
Power Reference Designs PDF
Glossary of EE Terms Glossary HTML

Design Tools,Models,Drivers & Software

Title Content Type File Type
ADP1046A Software
This software is used to program the ADP1046A. It is truly graphic and interactive. Power design engineers with no prior programming experience can use the software to monitor and quickly adjust functions like PWM timings, frequency, filter settings, protection limits, etc.
  • ADP1046A Setup v1.2.11
    Setup and installation files for the ADP1046A GUI.
  • ADP1046A Evaluation Software Reference Guide
    Describes the various controls and indicators of the ADP1046A Evaluation Software. It gives the details of what each button on the GUI does in terms of the register that is being updated, along with a brief description.
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

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.

ADP1046A Evaluation Board
Model Description Price RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
ADP-I2C-USB-Z Status: Production USB to I2C connector $250.00 Yes -
ADP1046A-100-EVALZ Status: Production Evaluation Board $400.00 Yes -
ADP1046ADC1-EVALZ Status: Production Daughter Card $100.00 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.

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