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reference designLTC3875EUJ | Demoboard DC2055A

Analog Devices LTC3875EUJ | Demoboard DC2055A

DC2055A - LTC3875EUJ Demo Board | 4.5V ≤ VIN ≤ 14V; VOUT: 1V @ 120A

Overview

TopologyBuck Converter
Input voltage4.5-14 V
Output 11.6 V / 30 A
Output 21.8 V / 90 A
IC revision2

Description

Demonstration circuit 2055A is a high efficiency, high density, 4-phase synchronous buck converter with a 4.5V to 14V input range. It can supply 120A maximum load current at a 1.0V output. This demo board has twoLTC®3875EUJ controllers. The LTC3875 is a feature-rich dual-phase synchronous buck controller with very low DCR current sensing capability, on-chip drivers and remote output voltage sensing. This board is set up with 0.32mΩ DCR inductor. The temperature compensation function canguarantee accurate current limit over a wide temperature range with DCR sensing.The LTC3875 is suitable for inputs from 4.5V to 38V and outputs up to 3.5V. It can provide a high efficiency, high power density and versatile power solution for telecom and datacom systems, industrial and medical instruments,DC power distribution systems and computer systems.The LTC3875 is available in a 40-lead 6mm × 6mm QFN package.To shut down the converter, set the RUN pin voltage below 1.4V (SW1 and SW2: both OFF). Use JP1 jumper to select Burst Mode® operation, pulse-skipping mode or forced continuous mode operation at light load. Switching frequency is pre-set at about 400kHz, and it can be easilymodified from 250kHz to 770kHz. An onboard dynamic circuit is also available for a transient test. Please see LTC3875 data sheet for more detailed information.

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Product series
L(nH)
LR(nH)
IR(A)
ISAT,10%(A)
ISAT,30%(A)
RDC(mΩ)
fres(MHz)
Material
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744301025
SPECWE-HCM SMT High Current Flat Wire Inductor, 250 nH, 250 nH

PCN pending

Due to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff.

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Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-HCM SMT High Current Flat Wire Inductor
Inductance250 nH
Rated Inductance250 nH
Rated Current38 A
Saturation Current @ 10%54.4 A
Saturation Current @ 30%64.7 A
DC Resistance0.32 mΩ
Self Resonant Frequency33 MHz
MaterialMnZn 
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