GENERAL DESCRIPTION

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.

FEATURES

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

APPLICATIONS

AC-to-DC power supplies

Isolated dc-to-dc power supplies

Redundant power supply systems

Server, storage, network, and communications infrastructure