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reference designLM5149

Texas Instruments LM5149

LM5149 80-V, Synchronous, Buck, DC/DC Controller with Ultra-Low IQ and Integrated Active EMI Filter

Overview

TopologyBuck Converter
Input voltage12.5-72 V
Output 112 V / 8 A
IC revisionA

Description

The LM5149 is a 80-V, ultra-low IQ synchronous buck DC/DC controller for high-current, single-output applications. The controller uses a peak current-mode control architecture for easy loop compensation, fast transient response, and excellent load and line regulation. The LM5149 can be set up in interleaved dual-phase mode with accurate current sharing for high-current applications. The device can operate with VIN as low as 3.5 V, at nearly 100% duty cycle if needed.

Features

  • Functional Safety-Capable
  • Documentation available to aid functional safety system design
  • Two integrated EMI mitigation mechanisms
  • Active EMI Filter for enhanced EMI performance at lower frequencies
  • Selectable dual random spread spectrum (DRSS) for enhanced EMI performance across

Typical applications

  • Test and measurement
  • Industrial transport
  • Building automation
  • Wireless infrastucture

More information

Parts approved by Texas Instruments

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Order Code
Data­sheet
Downloads
Status
Product series
L(µH)
Tol. L
IR(A)
IRP,40K(A)
ISAT,30%(A)
RDC max.(mΩ)
fres(MHz)
SamplesAvailability & Sample
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784325065
SPECWE-HCIA SMD Flat Wire High Current Inductor, 6.5 µH, ±20%

PCN pending

Due to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff.

Availability
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Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-HCIA SMD Flat Wire High Current Inductor
Inductance6.5 µH
Inductance±20% 
Rated Current8.4 A
Performance Rated Current11 A
Saturation Current @ 30%13 A
DC Resistance11.55 mΩ
Self Resonant Frequency27 MHz
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