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reference designLTC3888-1 | Demoboard DC2888A-B

Analog Devices LTC3888-1 | Demoboard DC2888A-B

Evaluating the LTC3888/LTC3888-1, 8-Phase, Single Output Synchronous Buck Converter with Power System Management

Overview

TopologyBuck Converter
Input voltage7-14 V
Output 11.8 V / 400 A

Description

Demonstration circuit DC2888A-A/DC2888A-B is an 8-phase single- output, high efficiency, high density, synchronous buck converter with 7 V to 14 V input range. The output can supply up to 400 A maximum load current. The demo board showcases one LTC3888/LTC3888-1 working with eight LTC7051. The LTC3888/ LTC3888-1 is a PMBus-compliant dual loop 8-phase step-down DC/DC controller with digital power system management. LTC7051 is an integrated smart power stage with current sense and temperature monitor. Refer to the LTC3888/LTC3888-1 and LTC7051 data sheets for detailed information.

Features

  • PMBus/I2C Compliant Serial Interface
  • Monitor Voltage, Current, Temperature and Faults
  • Digitally Program VOUT, Margins, UV, OV, Current Limit, SoftStart/Stop and Sequencing
  • Expandable to >16 Phases
  • 4.5 V ≤ VIN ≤ 26.5 V, 0.3 V ≤ VOUT ≤ 3.45 V
  • ±0.5% Output Voltage Accuracy
  • Programmable PWM Loop Compensation
  • Accurate PolyPhase® Current Sharing
  • Internal EEPROM with ECC and Fault Logging
  • DrMOS Output Current Monitor Interface
  • DrMOS Temperature/Fault Bus Interface
  • DrMOS Gate Drive Supply Monitor
  • Load Step Emulation
  • Internal or External PWM Clock from 250 kHz to 1 MHz
  • 52-Pin (5 mm × 8 mm) QFN Package
  • AEC-Q100 Qualified for Automotive Applications

Typical applications

  • Servers, Network and Storage Equipment
  • High Current Distributed Power Systems

More information

Parts approved by Analog Devices

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150060SS75000
SPECWL-SMCW SMT Mono-color Chip LED Waterclear, 1.6 mm, –
Simu­lation
Availability
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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
Length1.6 mm
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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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–
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Size0603 
Operating Temperature -40 °C up to +85 °C
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Width0.8 mm
Height0.7 mm
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PackagingTape and Reel 
–Check availability
150060GS75000
SPECWL-SMCW SMT Mono-color Chip LED Waterclear, 1.6 mm, –
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
Length1.6 mm
–
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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–
–
Size0603 
Operating Temperature -40 °C up to +85 °C
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–
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Width0.8 mm
Height0.7 mm
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PackagingTape and Reel 
–Check availability
885012206086
SPECWCAP-CSGP MLCCs 50 V(DC), 1.6 mm, –
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Availability
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Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWCAP-CSGP MLCCs 50 V(DC)
Length1.6 mm
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Capacitance3.3 nF
Capacitance±10% 
Rated Voltage50 V (DC)
Size0603 
Operating Temperature -55 °C up to +125 °C
Dissipation Factor2.5 %
Insulation Resistance10 GΩ
Ceramic TypeX7R Class II 
Width0.8 mm
Height0.8 mm
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
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702935000
SPECWA-SNSR Self-Retaining Spacer, 12.7 mm, 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
Length12.7 mm
Drilling in Panel4.8 mm
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Operating Temperature -30 °C up to +85 °C
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–Check availability