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reference designLTC3887 | Demoboard DC2394A

Analog Devices LTC3887 | Demoboard DC2394A

LTC3887EUJ-1 Dual Output PolyPhase Step-Down DC/DC Converter with Digital Power System Management

Overview

TopologyBuck Converter
Input voltage7-14 V
Output 11 V / 30 A
IC revisionA - DC2394

Description

Demonstration circuit 2394A is a high current, highefficiency, dual output PolyPhase® synchronous buckconverter featuring the LTC®3887EUJ-1, a dual-phasecurrent mode controller. The LTC3887-1 has the PMBusinterface and the power system management functions.This demo board uses DrMOS devices in the power stageand operates over an input voltage range from 7V to 14V.The output voltage can be programmed from 0.8V to 1.8V(1V by default) with an output current of up to 30A perphase. The DC2394A is configured as dual output withDCR current sensing. It also has an on-board dynamicload circuit, which makes it easy to evaluate the transientperformance.The DC2394A powers up to default settings and producespower based on configuration resistors or with the configurationfile loaded on its onboard EEPROM withoutthe need for any serial bus communication. This allowseasy evaluation of the DC/DC converter. To fully explorePerformance Summarythe extensive power system management features of theLTC3887-1, download the GUI software LTpowerPlay®onto your PC and use LTC’s I2C/SMBus/PMBus DongleDC1613A to connect to the board. LTpowerPlay allowsthe user to reconfigure the part on the fly and store theconfiguration in EEPROM, view telemetry of voltage, current,temperature and fault status.

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f(mm)
λDom typ.(nm)
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λPeak typ.(nm)
IV typ.(mcd)
VF typ.(V)
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2θ50% typ.(°)
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H(mm)
IR(A)
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150060RS75000
SPECWL-SMCW SMT Mono-color Chip LED Waterclear, –, 625 nm
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Availability
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Downloads27 files

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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.]625 nm
Emitting ColorRed 
Peak Wavelength [typ.]630 nm
Luminous Intensity [typ.]250 mcd
Forward Voltage [typ.]2 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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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
702936000
SPECWA-SNSR Self-Retaining Spacer, 4.8 mm, –
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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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Length15.9 mm
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Operating Temperature -30 °C up to +85 °C
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60800213421
SPECWR-PHD Jumper, –, –
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Downloads3 files

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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, –, –
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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