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ADP1046A

Analog Devices
Part Number ADP1046A
Manufacturer Analog Devices
Description Digital Controller
Published Oct 31, 2013
Detailed Description Data Sheet FEATURES Integrates all typical PWM controller functions 7 PWM control signals Digital control loop Integrate...
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ADP1046A
ADP1046A

Overview
Data Sheet 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 Digital Controller for Isolated Power Supply Applications ADP1046A 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.
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), overvoltage 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 sup...


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