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reference designLTM4700 | Demoboard DC2784A-C

Analog Devices LTM4700 | Demoboard DC2784A-C

High Current, PolyPhase Step-Down Power μModule Supply with Digital Power System Management

Overview

TopologyBuck Converter
Input voltage4.5-16 V
Output 11.8 V / 400 A

Description

Demonstration circuit 2784A-C is a high efficiency, highdensity, μModule regulator with 4.5V to 16V input range. The output voltage is adjustable from 0.5V to 1.8V and it can supply 400A maximum load current. The demo board has four LTM®4700 μModule regulators, which is a dual 50A or single 100A step-down regulator with digital power system management. Please see LTM4700 data sheet for more detailed information.DC2784A-C powers up to default settings and producespower based on configuration resistors without the need for any serial bus communication. This allows easy evaluation of the DC/DC converter. To fully explore the extensive power system management features of the part, download All registered trademarks and trademarks are the property of their respective owners. BOARD PHOTO the GUI software LTpowerPlay® onto your PC and use ADI’s I2C/SMBus/PMBus dongle DC1613A to connect to the board. LTpowerPlay allows the user to reconfigure the part on the fly and store the configuration in EEPROM, view telemetry of voltage, current, temperature and fault status.

Features

  • Dual 50A or Single 100A Digitally Adjustable Outputs with Digital Interface for Control, Compensation and Monitoring
  • Wide Input Voltage: 4.5V to 16V
  • Output Voltage Range: 0.5V to 1.8V
  • -90% Full Load Efficiency from 12VIN to 1VOUT at 100A
  • ±0.5% Maximum DC Output Error Over Temperature
  • ±3% Current Readback Accuracy (25°C to 125°C)
  • Integrated Input Current Sense Amplifier
  • 400kHz PMBus-Compliant I2C Serial Interface
  • Supports Telemetry Polling Rates Up to 125Hz
  • Integrated 16-Bit ∆Σ ADC
  • Constant Frequency Current Mode Control
  • Parallel and Current Share Multiple Modules
  • 15mm × 22mm × 7.87mm BGA Package
  • Input and Output Voltages, Currents, and Temperatures
  • Running Peak Values, Uptime, Faults and Warnings
  • Internal EEPROM and Fault Logging with ECC
  • Output Voltage, Voltage Sequencing and Margining
  • Digital Soft-Start/Stop Ramp
  • Optimize Analog Loop Compensation
  • OV/UV/OT, UVLO, Frequency and Phasing

Typical applications

  • Telecom, Datacom, and Storage Systems
  • System Optimization, Characterization and Data Mining in Prototype, Production and Field Environments

More information

Parts approved by Analog Devices

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Order Code
Data­sheet
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Status
Product series
f(mm)
λDom typ.(nm)
Emitting Color
λPeak typ.(nm)
IV typ.(mcd)
VF typ.(V)
Chip Technology
2θ50% typ.(°)
Pins
Type
Mount
L(mm)
H(mm)
IR(A)
Working Voltage(V (AC))
Operating Temperature
SamplesAvailability & Sample
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150060SS75000
SPECWL-SMCW SMT Mono-color Chip LED Waterclear, –, 630 nm
Simu­lation
Availability
–
Downloads27 files

RAY files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWL-SMCW SMT Mono-color Chip LED Waterclear
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Dominant Wavelength [typ.]630 nm
Emitting ColorSuper Red 
Peak Wavelength [typ.]645 nm
Luminous Intensity [typ.]60 mcd
Forward Voltage [typ.]1.9 V
Chip TechnologyAlInGaP 
Viewing Angle Phi 0° [typ.]140 °
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MountSMT 
Length1.6 mm
Height0.7 mm
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Operating Temperature -40 °C up to +85 °C
–Check availability
150060GS75000
SPECWL-SMCW SMT Mono-color Chip LED Waterclear, –, 525 nm
Simu­lation
Availability
–
Downloads27 files

RAY files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWL-SMCW SMT Mono-color Chip LED Waterclear
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Dominant Wavelength [typ.]525 nm
Emitting ColorGreen 
Peak Wavelength [typ.]515 nm
Luminous Intensity [typ.]430 mcd
Forward Voltage [typ.]3.2 V
Chip TechnologyInGaN 
Viewing Angle Phi 0° [typ.]140 °
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MountSMT 
Length1.6 mm
Height0.7 mm
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Operating Temperature -40 °C up to +85 °C
–Check availability
702935000
SPECWA-SNSR Self-Retaining Spacer, 4.8 mm, –
Simu­lation–
Availability
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Downloads3 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWA-SNSR Self-Retaining Spacer
Drilling in Panel4.8 mm
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Length12.7 mm
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Operating Temperature -30 °C up to +85 °C
–Check availability
60800213421
SPECWR-PHD Jumper, –, –
Simu­lation–
Availability
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Downloads3 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWR-PHD Jumper
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Pins2 
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Rated Current3 A
Working Voltage200 V (AC)
Operating Temperature -25 °C up to +105 °C
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62000311121
SPECWR-PHD Pin Header, –, –
Simu­lation–
Availability
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Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWR-PHD Pin Header
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Pins3 
TypeStraight 
MountTHT 
Length6 mm
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Rated Current2 A
Working Voltage200 V (AC)
Operating Temperature -40 °C up to +105 °C
–Check availability