ADP1046A
RECOMMENDED FOR NEW DESIGNSDigital Controller for Isolated Power Supply Applications
- Part Models
- 3
- 1ku List Price
- Starting From $6.10
Overview
- 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
- Qualified for automotive applications
- Download ADP1046AW Automotive Data Sheet (pdf)
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), over- voltage 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 supply.
APPLICATIONS
- AC-to-DC power supplies
- Isolated dc-to-dc power supplies
- Redundant power supply systems
- Server, storage, network, and communications infrastructure
Documentation
Data Sheet 1
Application Note 2
Video 8
Power Reference Designs 4
Analog Dialogue 1
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. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| ADP1046AACPZ-R7 | 32-Lead LFCSP (5mm x 5mm w/ EP) | ||
| ADP1046AACPZ-RL | 32-Lead LFCSP (5mm x 5mm w/ EP) | ||
| ADP1046AWACPZ-R7 | 32-Lead LFCSP (5mm x 5mm w/ EP) |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Evaluation Software 1
ADP1046A Software
Can't find the software or driver you need?
Evaluation Kits
ADP1046A Evaluation Board
Resources
Software
ADP1046A Evaluation Board