ADP5055
Info : RECOMMENDED FOR NEW DESIGNS
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ADP5055

Triple Buck Regulator Integrated Power Solution

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Info : RECOMMENDED FOR NEW DESIGNS tooltip
Info : RECOMMENDED FOR NEW DESIGNS tooltip
Part Details
Part Models 1
1ku List Price Starting From $4.94
Features
  • Wide input voltage range: 2.75 V to 18 V 
  • Bias input voltage range: 4.5 V to 18 V 
  • Operation up to 150°C junction temperature 
  • PMBus-compatible interface with configurable address 
  • FB1 voltage accuracy (default): −0.62% to +0.69% (−40°C ≤ TJ ≤ +125°C) 
  • Channel 1 and Channel 2: 7 A synchronous buck regulator (9.4 A minimum valley current-limit threshold) 
  • Channel 1 and Channel 2: 14 A output in parallel operation 
  • Channel 3: 3 A synchronous buck regulator (4.2 A minimum valley current-limit threshold) 
  • 8-bit precision DAC for DVS 
    • Adjustable feedback voltage range: 408 mV to 790.5 mV per 1.5 mV step 
    • Upper and lower threshold limit setting 
  • 250 kHz to 2500 kHz adjustable switching frequency range 
  • External compensation for fast load transient response
  • Precision enable pin with 0.615 V accurate threshold
  • Programmable power-up and power-down sequence 
  • Selective active output discharge switch
  • Selective FPWM/PSM mode selection
  • Frequency synchronization input or output 
  • Power-good flag on selective channels
  • UVLO, overcurrent protection, and TSD protection
  • 43-terminal, 5.00 mm × 5.50 mm LGA package
Additional Details
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The ADP5055 combines three high performance buck regulators in a 43-terminal land grid array (LGA) package to meet demanding performance and board space requirements. The device enables direct connection to high input voltages up to 18 V with no preregulators. All channels integrate both high-side and low-side power metal-oxide semiconductor field effect transistors (MOSFETs) to achieve an efficiency optimized solution. Channel 1 and Channel 2 deliver a programmable output current of 3.5 A or 7 A or provide a single output with up to 14 A of current in parallel operation. Channel 3 delivers a programmable output current of 1.5 A or 3 A.

The switching frequency of the ADP5055 can be programmed or synchronized to an external clock. The ADP5055 contains an enable pin (ENx) on each channel for simple power-up sequencing or adjustable undervoltage lockout (UVLO) threshold.

The ADP5055 integrates a high precision 8-bit digital-to-analog converter (DAC) to enable the output voltage dynamic voltage scaling (DVS) via the PMBus®-compatible, 2-wire interface. The PMBus interface provides other flexible configurations, such as start-up and shutdown sequence control, individual forced pulse-width modulation or power saving mode (FPWM or PSM) selection, an output discharge switch, and a power-good signal.

The ADP5055 is rated at −40°C to +150°C junction temperature.

APPLICATIONS

  • Small cell base stations
  • Field programmable gate array (FPGA) and processor applications
  • Security and surveillance
  • Medical applications
Part Models 1
1ku List Price Starting From $4.94

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Documentation

Documentation

Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
ADP5055ACCZ-R7
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Evaluation Kit

Evaluation Kits 1

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EVAL-ADP5055

Evaluating the ADP5055 Triple Buck Regulator Integrated Power Solution

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EVAL-ADP5055

Evaluating the ADP5055 Triple Buck Regulator Integrated Power Solution

Evaluating the ADP5055 Triple Buck Regulator Integrated Power Solution

Features and Benefits

  • Wide input voltage range: 2.75 V to 18 V
  • Bias input voltage range: 4.5 V to 18 V
  • Full-featured evaluation board for the ADP5055
    • Channel 1 and Channel 2: 7 A synchronous buck regulator, or 14 A output in parallel operation
    • Channel 3: 3 A synchronous buck regulator
  • Selective PSM or FPWM operation
  • 250 kHz to 2500 kHz adjustable switching frequency range
  • Frequency synchronization input or output
  • USB dongle and GUI software support

Product Detail

The ADP5055-EVALZ features the ADP5055, which combines three high performance buck regulators in a 43-terminal land grid array (LGA) to meet demanding performance and board space requirements. The ADP5055-EVALZ connects to input voltages up to 18 V directly, without any preregulators.

The ADP5055 includes a PMBus®-compatible serial interface and the ADP5055-EVALZ can be used with an external USB dongle and graphical user interface (GUI) software to evaluate the power management functionalities and to read back system status.

Full details on the device are provided in the ADP5055 data sheet, available from Analog Devices, Inc. Consult this data sheet in conjunction with the user guide when evaluating the ADP5055.

Tools & Simulations

Tools & Simulations 1

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

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