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reference designLTC7130

Analog Devices LTC7130

20V 20A Monolithic Buck Converter with Ultralow DCR Sensing

Overview

TopologyBuck Converter
Input voltage5-20 V
Switching frequency250-770 kHz
Output 11.2 V / 40 A
Output 25 V / 5 A
Output 31.5 V / 20 A

Description

monolithic converter that can deliver up to 20A continuousload current. It employs a unique architecture which enhancesthe signal-to-noise ratio of the current sense signal, allowingthe use of a very low DC resistance power inductor tomaximize efficiency in high current applications. This featurealso reduces the switching jitter commonly found in lowDCR applications. The LTC7130 also includes a high speeddifferential remote sense amplifier and a programmable currentsense limit that can be selected from 10mV to 30mV toset the output current limit up to 20A. In addition, the DCRtemperature compensation feature limits the maximumoutput current precisely over temperature.The LTC7130 also features a precise 0.6V reference with aguaranteed limit of ±0.5% that provides an accurate outputvoltage. A 5V to 20V input voltage range supports a widevariety of bus voltages and various types of batteries.The LTC7130 is offered in a compact and low profile BGA packageavailable with SnPb/RoHS compliant terminal finishes.

Features

Wide VIN Range: 4.5V to 20VOptimized for Low Duty Cycle ApplicationsHigh Efficiency: Up to 95%LTC Proprietary Current Mode ArchitectureHigh Current Parallel OperationUltralow DCR Current Sensing with Temperature CompensationProgrammable Output Current LimitHigh Speed Differential Remote Sense Amplifier±0.5% Output Voltage Regulation AccuracyOutput Short-Circuit Protection with Soft RecoveryProgrammable Soft-Start, TrackingProgrammable Fixed Frequency: 250kHz to 770kHzEXTVCC for Reduced Power DissipationFault Indicator for Output UV/OV Conditions6.25mm × 7.5mm × 2.22mm BGA Package

Typical applications

  • Distributed High Power Density Systems
  • Telecom/Datacom Systems
  • DSP, FPGA, ASIC Reference Designs

More information

Products

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
L(nH)
IRP,40K(A)
ISAT,10%(A)
ISAT,30%(A)
RDC(mΩ)
fres(MHz)
Material
Qty.
LR(nH)
IR(A)
SamplesAvailability & Sample
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744308025
SPECWE-HCM SMT High Current Flat Wire Inductor, 250 nH, 54.3 A
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Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-HCM SMT High Current Flat Wire Inductor
Inductance250 nH
Performance Rated Current54.3 A
Saturation Current @ 10%41.6 A
Saturation Current @ 30%46.5 A
DC Resistance0.37 mΩ
Self Resonant Frequency40 MHz
MaterialMnZn 
Packaging Unit500 
Rated Inductance246 nH
Rated Current25 A
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744325072
SPECWE-HCI SMT Flat Wire High Current Inductor, 720 nH, 37.8 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
Inductance720 nH
Performance Rated Current37.8 A
Saturation Current @ 10%14 A
Saturation Current @ 30%35 A
DC Resistance1.3 mΩ
Self Resonant Frequency115 MHz
MaterialSuperflux 
Packaging Unit700 
Rated Inductance600 nH
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