LTP8813

RECOMMENDED FOR NEW DESIGNS

54V, 110A Continuous/140A Peak DC-to-DC μModule Regulator with PMBus Interface

Data Sheet (Rev. Sp0) Product Selection Table
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Overview

  • High Efficiency at High Frequency: up to 93.9% Efficiency at VIN = 54V to VOUT = 3.3V
  • PMBus-Compliant I2C Serial Interface and Non-Volatile Memory/EEPROM:
    • Programming of VOUT, Current Limits,\ Soft-Start/Soft-Stop, Frequency Synchronization And Phasing, Loop Compensation, Warnings, and Fault Handling
    • Telemetry of Voltage, Current, Temperature, and Faults
    • Configurable “Black Box” Fault Log Saves up to 15 Records of All Telemetry and Faults
  • Wide Input Voltage Range: 45V to 65V
  • Output Voltage Range: 0.5V to 3.6V
  • Optimized for VIN = 48V to 54V, VOUT = 3.3V
  • ±1.5% Maximum DC Output Error with Differential Remote Voltage Sense
  • Parallel Multiple μModule ICs for Increased Total IOUT
  • Available in a 22mm × 24mm × 14.15mm Surface- Mounted Open Frame Package

The LTP8813 is a 110A continuous/140A peak step-down power μModule® (micromodule) regulator that provides microprocessor core voltage from a 48V or 54V power distribution system. The LTP8813 features remote configurability and telemetry of power management parameters over PMBus, an open-standard digital interface based on I2C.

The LTP8813 is comprised of a programmable digital control loop with precision mixed-signal circuitry, an EEPROM, power MOSFETs, a planar transformer, inductors, and ancillary components. The LTP8813’s high level of integration minimizes component count and design time and maximizes flexibility and power density.

The LTP8813 preserves high efficiency at high conversion ratios by utilizing a quasi-resonant architecture that reduces high-voltage switching losses.

APPLICATIONS

  • Servers, Network, and Storage Equipment
  • Automated test equipment (ATE)
LTP8813
54V, 110A Continuous/140A Peak DC-to-DC μModule Regulator with PMBus Interface
LTP8813 Typical Application LTP8813 Efficiency LTP8813 Chip Illustration
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Documentation

Data Sheet 1

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Evaluation Kits

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DC3190B-G

LTP8813 | 54V, 110A Continuous/140A Peak DC-to-DC μModule Regulator with PMBus Interface

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Features and Benefits

  • DC3190B-G Board
  • Transient Circuit Included for Load Transient Evaluation
  • GUI with LTpowerPlay

Product Details

The DC3190B-G is the demonstration circuit for the LTP8813, a high-current, high-density, high-efficiency open-frame μModule® (micromodule) regulator with a 45V to 65V input range. The DC3190B-G board includes an LTP8813 μModule regulator, which provides microprocessor voltage of 3.3V from a 54V power distribution architecture with digital power system management (PSM). The maximum continuous output current for the DC3190B-G board is 110A. The maximum transient output current is 140A. Refer to the LTP8813 data sheet for more detailed information.

The DC3190B-G powers up to default settings and produces power based on configuration resistors without the need for any serial bus communication. This allows easy evaluation of the DC-to-DC converter. To fully explore the extensive PSM features of the DC3190B-G, download the LTpowerPlay® graphical user interface (GUI) software to your PC and use the Analog Devices DC1613A I2C/ system management bus (SMBus)/power management bus (PMBus) dongle to connect to the DC3190B-G board.

The LTpowerPlay allows the user to reconfigure the part on-the-fly, store the configuration in electrically erasable programmable read-only memory (EEPROM), and view telemetry of voltage, current, temperature, and fault status.
DC3190B-G
LTP8813 | 54V, 110A Continuous/140A Peak DC-to-DC μModule Regulator with PMBus Interface
DC3190B-G Evaluation Board Angel View DC3190B-G Evaluation Board Top View DC3190B-G Evaluation Board Bottom View

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