ADP1051
Digital Controller for Isolated Power Supply with PMBus Interface
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Overview
Features and Benefits
- Versatile digital voltage mode controller
- High speed input voltage feedforward control
- 6 pulse-width modulation (PWM) logic outputs with 625 ps resolution
- Switching frequency: 49 kHz to 625 kHz
- Frequency synchronization as master and slave device
- Multiple energy saving modes
- Adaptive dead time compensation for efficiency optimization
- Low device power consumption: 100 mW typical
- Extensive fault detection and protection
- PMBus compliant
- Direct parallel control for power supplies without OR’ing devices
- Accurate droop current share
- Pre-bias startup
- Reverse current protection
- Conditional overvoltage protection
- Graphical user interface (GUI) for ease of programming
- On-board EEPROM for programming and data storage
- Available in a 24-lead, 4 mm × 4 mm LFCSP
- −40°C to +125°C operating temperature
Product Details
The ADP1051 is an advanced digital controller with a PMBus™ interface targeting high density, high efficiency dc-to-dc power conversion. This controller implements voltage mode control with high speed, input line feedforward for enhanced transient and improved noise performance. The ADP1051 has six programmable pulse-width modulation (PWM) outputs capable of controlling most high efficiency power supply topologies, with added control of synchronous rectification (SR). The device includes adaptive dead time compensation to improve efficiency over the load range, and programmable light load mode operation, combined with low power consumption, to reduce system standby power losses.
The ADP1051 implements several features to enable a robust system of parallel and redundant operation for customers that require high availability or parallel connection. The device provides synchronization, reverse current protection, pre-bias startup, accurate current sharing between power supplies, and conditional overvoltage techniques to identify and safely shut down an erroneous power supply in parallel operation mode.
The ADP1051 implements several features to enable a robust system of parallel and redundant operation for customers that require high availability or parallel connection. The device provides synchronization, reverse current protection, pre-bias startup, accurate current sharing between power supplies, and conditional overvoltage techniques to identify and safely shut down an erroneous power supply in parallel operation mode.
APPLICATIONS
- High density, isolated DC/DC power supplies
Intermediate bus converters
High availability parallel power systems - Server, storage, industrial, networking, and communications infrastructure
Product Categories
Product Lifecycle
Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (1)
Documentation & Resources
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Isolation in Digital Power Supply—Why and How7/1/2017
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Simple Circuit Allows Backward Compatibility for Digital Power Controllers5/1/2014 Analog Dialogue
Software & Systems Requirements
Evaluation Software
Design Resources
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 Number | Material Declaration | Reliability Data | Pin/Package Drawing | CAD Symbols, Footprints & 3D Models |
|---|---|---|---|---|
| ADP1051ACPZ-R7 | Material Declaration | Reliability Data | 24-Lead LFCSP (4mm x 4mm w/ EP) | |
| ADP1051ACPZ-RL | Material Declaration | Reliability Data | 24-Lead LFCSP (4mm x 4mm w/ EP) | |
| Wafer Fabrication Data |
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Evaluation Boards
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.