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reference designLTC3633 | Demoboard DC2619A

Analog Devices LTC3633 | Demoboard DC2619A

LTC2972 2-Channel PMBus Power System Manager with Eight Power Supply Rails

Overview

TopologyBuck Converter
Input voltage12 V
Switching frequency500-4000 kHz
Output 11 V / 1.5 A
Output 21.5 V / 1.5 A
IC revision1

Description

The DC2619A is a demonstration system for the LTC2972 power system manager that interfaces to various regulators. The board contains all the circuitry needed to demonstrate a power system that utilizes four 2-channel LTC2972 devices that manage eight power supplies. The eight power supplies include linear and switching regulators or the purpose of demonstrating a variety of methods to sense voltage and current. The demo board provides a sophisticated 8-channel programmable power supply system. The LTC2972 is a 2-channel I2C/SMBus/PMBus power system manager that features accurate input current and energy measurement. The device monitors input current and input voltage, and calculates input power and energy. The DC2619A demonstrates the ability of the LTC2972 to sequence, trim, margin, supervise, monitor, and log faults for eight power supplies. The LTC2972 monitors each channel’s output voltage and output current and also monitors external temperature sensors and its own internal die temperature.The DC2619A board contains eight independent power supply rails. The +5V/–5V rails are based on the switched capacitor LTC3260 regulator, the 1.0V/1.2V rails are powered by an LTC3633 switching regulator, the 1.5V/1.8V rails are powered by LTC3405A switching regulators, and the 2.5/3.3V rails are powered by LT3086/LT3055 linear regulators. The board is pre-configured with these voltages and may be re-configured with feedback resistors.The LTpowerPlay® graphical user interface (GUI) supports this demonstration system and enables complete control of all the features of the LTC2972. Together, the LTpowerPlay software and DC2619A hardware system create a powerful development environment for designing and testing configuration settings of the LTC2972. LTpowerPlay stores these settings in the LTC2972’s internal EEPROM or in a project file. The software displays all of the configuration settings and real time measurements from the power system management IC. Telemetry allows easy access and decoding of the fault log created by the LTC2972. The board comes preprogrammed with the EEPROM values appropriate for the eight power supply rails on the DC2619A. Just plug and play!

Features

  • Sequence, Trim, Margin and Supervise Eight Power Supplies
  • Manage Faults, Monitor Telemetry, Create Fault Logs
  • PMBus Compliant Command Set
  • Supported by LTpowerPlay GUI
  • Margin or Trim Supplies to 0.25% Accuracy
  • Eight IOUT and Four IIN Monitors
  • Input Power Measurement and Energy Accumulation
  • Fast OV/UV Supervisors Per Channel
  • Multi-Channel Fault Management
  • Automatic Fault Logging to Internal EEPROM
  • Operates Autonomously without Additional Software
  • Monitors: Voltage, Current, Power, Temperature
  • Time-Based Output Sequencer
  • I2C/SMBus Serial Interface
  • Powered from 8V to 14V

Typical applications

  • Distributed Power Systems / Point of Load Power Supplies
  • Battery Powered Instruments

More information

Products

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λDom typ.(nm)
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λPeak typ.(nm)
IV typ.(mcd)
VF typ.(V)
Chip Technology
2θ50% typ.(°)
L(µH)
ISAT(A)
RDC(mΩ)
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H(mm)
IR(A)
Working Voltage(V (AC))
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150060BS75000
SPECWL-SMCW SMT Mono-color Chip LED Waterclear, 470 nm, Blue
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Downloads28 files

RAY files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWL-SMCW SMT Mono-color Chip LED Waterclear
Dominant Wavelength [typ.]470 nm
Emitting ColorBlue 
Peak Wavelength [typ.]465 nm
Luminous Intensity [typ.]145 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
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150060GS75000
SPECWL-SMCW SMT Mono-color Chip LED Waterclear, 525 nm, Green
Simu­lation
Availability
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Downloads27 files

RAY files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWL-SMCW SMT Mono-color Chip LED Waterclear
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 °
–
–
–
–
–
–
MountSMT 
Length1.6 mm
Height0.7 mm
–
–
Operating Temperature -40 °C up to +85 °C
–Check availability
150060SS75000
SPECWL-SMCW SMT Mono-color Chip LED Waterclear, 630 nm, Super Red
Simu­lation
Availability
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Downloads27 files

RAY files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWL-SMCW SMT Mono-color Chip LED Waterclear
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
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74404032010
SPECWE-LQS SMT Power Inductor, –, –
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Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-LQS SMT Power Inductor
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–
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Inductance1 µH
Saturation Current3 A
DC Resistance33 mΩ
Self Resonant Frequency138 MHz
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MountSMT 
Length3 mm
Height1.5 mm
Rated Current2.2 A
–
Operating Temperature -40 °C up to +125 °C
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60800213421
SPECWR-PHD Jumper, –, –
Simu­lation–
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Downloads3 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWR-PHD Jumper
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–
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Pins2 
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–
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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 Activei| Production 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