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reference designLTC3887 | Demoboard DC2263A-A

Analog Devices LTC3887 | Demoboard DC2263A-A

LTC3887EUJ Dual Phase Step-Down DC/DC Controller with Digital Power System Manageme

Overview

TopologyBuck Converter
Input voltage7-14 V
Output 11.8 V / 25 A
IC revisionA

Description

Demonstration circuit 2263A is a high current, highefficiency, synchronous buck converter featuring theLTC®3887EUJ, a dual-phase current mode controller.The LTC3887 has the PMBus interface and power systemmanagement functions.The DC2263A uses discrete MOSFETs in the power stage.The input range of this board is from 7V to 14V. The outputvoltage can be programmed from 0.8V to 1.8V with anoutput current up to 25A per phase. The DC2263A hastwo versions: The DC2263A-A uses a sense resistor andprovides two outputs while the DC2263A-B uses DCRcurrent sensing and provides a dual-phase single output.The factory default setting for the output voltage is 1.0V.The DC2263A also has an onboard dynamic load circuit,which makes it easy for the customer to evaluate thetransient performances.The DC2263A powers up to default settings and producespower based on configuration resistors or NVM without theneed for any serial bus communication. This allows easyevaluation of the DC/DC converter aspects of the LTC3887.To fully explore the extensive power system managementfeatures of the parts, download the GUI software LTpowerPlayonto your PC and use LTC’s I2C/SMBus/PMBusDongle DC1613A to connect to the board. LTpowerPlay®allows the user to reconfigure the part on-the fly and storethe configuration in EEPROM, view telemetry of voltage,current, temperature and fault status.

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Products

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
L(µH)
IRP,40K(A)
ISAT,10%(A)
ISAT,30%(A)
RDC(mΩ)
fres(MHz)
Material
Qty.
LR(µH)
IR(A)
Pins
Type
Mount
L(mm)
H(mm)
Working Voltage(V (AC))
Operating Temperature
Color
Gender
Packaging
SamplesAvailability & Sample
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744355019
SPECWE-HCI SMT Flat Wire High Current Inductor, 0.19 µH, 65 A
Simu­lation
Availability
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Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-HCI SMT Flat Wire High Current Inductor
Inductance0.19 µH
Performance Rated Current65 A
Saturation Current @ 10%28 A
Saturation Current @ 30%60 A
DC Resistance0.5 mΩ
Self Resonant Frequency225 MHz
MaterialWE-PERM 
Packaging Unit400 
Rated Inductance0.17 µH
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Pins2 
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MountSMT 
Length13 mm
Height4.7 mm
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Operating Temperature -40 °C up to +155 °C
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744305022
SPECWE-HCM SMT High Current Flat Wire Inductor, 0.22 µH, 63 A
Simu­lation
Availability
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Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-HCM SMT High Current Flat Wire Inductor
Inductance0.22 µH
Performance Rated Current63 A
Saturation Current @ 10%39.9 A
Saturation Current @ 30%42 A
DC Resistance0.155 mΩ
Self Resonant Frequency36 MHz
MaterialMnZn 
Packaging Unit500 
Rated Inductance0.215 µH
Rated Current26 A
Pins2 
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MountSMT 
Length13.5 mm
Height5 mm
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Operating Temperature -40 °C up to +125 °C
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60900213421
SPECWR-PHD Jumper, –, –
Simu­lation–
Availability
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Downloads3 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWR-PHD Jumper
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Rated Current3 A
Pins1 
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Length2.44 mm
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Working Voltage250 V (AC)
Operating Temperature -40 °C up to +125 °C
ColorBlack 
GenderJumper 
PackagingBag 
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61300311121
SPECWR-PHD Pin Header - Single, –, –
Simu­lation–
Availability
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Downloads7 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWR-PHD Pin Header - Single
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Rated Current3 A
Pins3 
TypeStraight 
MountTHT 
Length7.62 mm
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Working Voltage250 V (AC)
Operating Temperature -40 °C up to +105 °C
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GenderPin Header 
PackagingBag 
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