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reference designEVAL-LT8349-BZ | Demoboard EVAL-LT8349-BZ

Analog Devices EVAL-LT8349-BZ | Demoboard EVAL-LT8349-BZ

Evaluates: LT8349 in 6V Output Voltage Application

Overview

TopologyBoost Converter
Input voltage2.5-5.5 V
Switching frequency300-4000 kHz
Output 18 V / 6 A

Description

The EVAL-LT8349-BZ evaluation board provides a proven design to evaluate the LT8349, 2-Phase low IQ, synchronous boost converter. The application circuit is configured to demonstrate optimum performance and component size. Using the board layout example, optimized for conducted, radiated EMI, and thermal performance, will help ensure the designer sees similar performance in their system.The evaluation board is configured to run at 2MHz per phase with a 6V output voltage from an input voltage range of 2.5V to 4.5V and deliver up to 5A load current when VIN is 4.5V.The evaluation board features an adjustable input undervoltage-lockout, external clock synchronization, thermal shutdown, selectable mode of operation and selectable Burst Mode peak current.

Features

Input Voltage Range: 2.5V to 4.5V6V Output VoltageUp to 5A Load Current at 4.5V input voltage2MHz (per phase) Switching FrequencyHigh 97.1% Efficiency (VIN = 4.5V, IOUT = 1A)Enable/UVLO Input, Resistor-Programmable UVLO ThresholdSelectable Mode of operationSelectable Burst Mode Peak Current (IPK_BURST) levels for optimization of performanceExternal Frequency SynchronizationExternal CompensationOvertemperature ProtectionProven Printed Circuit Board (PCB) LayoutFully Assembled and TestedComplies with CISPR32 (EN55032) Class B Conducted and Radiated Emissions

Typical applications

More information

Parts approved by Analog Devices

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
L(µH)
IRP,40K(A)
ISAT,30%(A)
RDC typ.(mΩ)
fres(MHz)
VOP(V)
Mount
Z @ 100 MHz(Ω)
Zmax(Ω)
Test Condition Zmax
IR(A)
Z @ 1 GHz(Ω)
H(mm)
Type
SamplesAvailability & Sample
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744383360047
SPECWE-MAPI SMT Power Inductor, 0.47 µH, 7.55 A
Simu­lation
Availability
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Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-MAPI SMT Power Inductor
Inductance0.47 µH
Performance Rated Current7.55 A
Saturation Current @ 30%9.8 A
DC Resistance18 mΩ
Self Resonant Frequency99 MHz
Operating Voltage80 V
MountSMT 
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Rated Current4.8 A
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Height2 mm
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74279226101
SPECWE-MPSB EMI Multilayer Power Suppression Bead, –, –
Simu­lation
Availability
–
Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-MPSB EMI Multilayer Power Suppression Bead
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DC Resistance4.5 mΩ
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MountSMT 
Impedance @ 100 MHz100 Ω
Maximum Impedance160 Ω
Maximum Impedance1100 MHz 
Rated Current8 A
Impedance @ 1 GHz150 Ω
Height2.3 mm
TypeHigh Current 
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