GENERAL DESCRIPTION

The ADP1043A is a secondary side power supply controller IC designed to provide all the functions that are typically needed in an ac-to-dc or isolated dc-to-dc control application.

The ADP1043A 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, ac sense, undervoltage lockout (UVLO), and overvoltage protection (OVP).

FEATURES

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

APPLICATIONS

AC-to-DC power supplies

Isolated dc-to-dc power supplies

Redundant power supplies

Parallel power supplies

Server, storage, network, and communications infrastructure