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ADP1043:  Digital Controller for Isolated Power Supply Applications

The ADP1043 is a secondary side power supply controller IC that is designed to provide all the functions that are typically needed in an isolated ac-to-dc or dc-to-dc control application.

The ADP1043 is optimized for minimal component count, maximum flexibility, and minimum design time. Features include remote voltage sense, local voltage sense, primary and secondary side current sense, ...More

ADP1043:  Digital Controller for Isolated Power Supply Applications

Product Description

The ADP1043 is a secondary side power supply controller IC that is designed to provide all the functions that are typically needed in an isolated ac-to-dc or dc-to-dc control application.

The ADP1043 is optimized for minimal component count, maximum flexibility, and minimum design time. Features include remote voltage sense, local voltage sense, primary and secondary side current sense, pulse-width modulation (PWM) generation, and hot-swap sense and control. The control loop is digital with an integrated programmable digital filter. Protection features include current limiting, undervoltage lockout (UVLO), and overvoltage protection (OVP).

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 redundancy of critical 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 moni-toring and system test functions.

The ADP1043 is available in a 32-lead LFCSP and operates from a single 3.3 V supply.

Applications

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

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    Integrates all typical controller functions

  • Digital control loop
  • Remote and local voltage sense
  • Primary and secondary side current sense
  • PWM control
  • Synchronous rectifier control
  • Current sharing
  • Integrated programmable loop filter
  • I2C interface
  • Extensive fault detection and protection
  • Extensive programming
  • Fast calibration
  • EEPROM
  • Standalone or microcontroller control

Functional Block Diagram for ADP1043

Of Note ...

Similar Products

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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.