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reference designLTC3860EUH | Demoboard DC1184A

Analog Devices LTC3860EUH | Demoboard DC1184A

LTC3860EUH Demo Board - DUAL OUTPUT SYNCHRONOUS BUCK CONVERTER

Overview

TopologyBuck Converter
Input voltage10-14 V
Output 11.8 V / 25 A
Output 21.2 V / 25 A
IC revision5

Description

Demonstration circuit DC1184A is a dual output voltage mode synchronous buck converter featuring the LTC3860EUH. This board provides two outputs of 1.2V/25A and 1.8V/25A from an input voltage of 10V to 14V at a switching frequency of 500kHz. The power stage consists of the Renesas R2J20602NP which is a tri-state PWM compatible 8mm x 8mm DrMOS and a 0.47uH 13.2mm x 12.8mm iron powder type inductor from Wurth. An on-board 5V LT1616 buck regulator provides the 5V bias for the LTC3860 and the DrMOS.

The demo board uses a high density, two sided drop-in layout. The power components, excluding the bulk output and input capacitors, fit within a 1.5” x 1.25” area on the top layer. The control circuit resides in a 0.75” x 0.75” area on the bottom layer. The package style for the LTC3860EUH is a 32-lead 5mm x 5mm QFN.

Features

  • Differential amplifier for remote sensing VOUT1 which is setup for 1.2V.
  • Optional components for single output dual phase operation.
  • CLKIN pin for synchronization to an external clock which can be used in conjunction with optional PHSMD resistors and CLKOUT pin for up to 12-phase operation.
  • TRACK/SS pins for external coincident rail tracking.
  • RUN pins and PGOOD pins for each phase.
  • For each phase, optional footprints for an LTC4449 gate driver and two top FETs and twobottom FETs.

More information

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.
SamplesAvailability & Sample
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744355147
SPECWE-HCI SMT Flat Wire High Current Inductor, 0.47 µH, 54.9 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
Inductance0.47 µH
Performance Rated Current54.9 A
Saturation Current @ 10%25 A
Saturation Current @ 30%50 A
DC Resistance0.67 mΩ
Self Resonant Frequency100 MHz
MaterialWE-PERM 
Packaging Unit400 
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