AC-to-DC power supplies Isolated dc-to-dc power supplies Redundant power supply systems Server, storage, network, and communications infrastructure
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
Features and Benefits
| Power ManagementAutomotive
Software & Systems Requirements |
| Document | note |
| ADP1046A: Digital Controller for Isolated Power Supply Applications Data Sheet (Rev. 0) ADP1046AW Automotive Data Sheet (Rev. 0, 12/2013) | PDF 1831 kB |
| Document | note |
| AN-1383: ADP1046A EEPROM Programming (Rev. A) | PDF 525.71 K |
| AN-1253: Layout Considerations for Digital Power Management (ADP1046A) (Rev. 0) | PDF 685 kB |
| Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
|---|---|---|---|---|---|---|
| ADP1046AACPZ-R7 Production | 32 ld LFCSP (5x5mm) w/3.1mm exposed pad | REEL 1500 | -40 to 125C | 0 | 4.5 | Y |
| ADP1046AACPZ-RL Production | 32 ld LFCSP (5x5mm) w/3.1mm exposed pad | REEL 5000 | -40 to 125C | 0 | 4.5 | Y |
| ADP1046AWACPZ-R7 Production | 32 ld LFCSP (5x5mm) w/3.1mm exposed pad | REEL 1500 | -40 to 125C | 0 | 6 | Y |
| Part Number | Description | Price | RoHS |
|---|---|---|---|
| ADP1046A-100-EVALZ | Evaluation Board | 400 | Y |
| ADP1046ADC1-EVALZ | Daughter Card | 100 | Y |
| ADP-I2C-USB-Z | USB to I2C connector | 250 | Y |
