Digital Controller for Isolated Power Supply Applications
Features and Benefits
- 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
- Standalone or microcontroller control
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).
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 monitoring and system test functions.
The ADP1043A is available in a 32-lead LFCSP and operates from a single 3.3 V supply.
- AC-to-DC power supplies
- Isolated dc-to-dc power supplies
- Redundant power supplies
- Parallel power supplies
- Server, storage, network, and communications infrastructure
Product Lifecycle Not Recommended for New Designs
This designates products ADI does not recommend broadly for new designs.
Evaluation Kits (2)
The evaluation board features an isolated full bridge topology operating at 100KHz switching frequency. Its output is rated at deliver 12V, 9A with an input ranging from 36-60VDC. The board features the ADP1043A digital controller as the main controller for providing various functions such as current PWMs and OrFET control. It also provides protection features like OCP and OVP.
Features & Benefits
- Full bridge topology with advanced volt second balance to eliminate blocking capacitor
- High efficiency (>87%)
- Low component count
- Protection features for input and output current.
- Programmable responses to faults
- Digital trimming
- Test points for key features like gate-source voltages, synchronous rectifiers, transformer primary winding etc
The USB to I2C interface is used for communicating between a digital power management device (like the ADP1043A) and the configuration software that runs on a computer. It also supplies 5V and 0.5A to power up the daughter card / evaluation boards.
This same USB to I2C interface connector is used for the ADP1043A, ADP1047, ADP1048, and other digital power management devices.
Software & Systems Requirements
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
Sample & Buy
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.