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reference designLM5149-Q1 | Demoboard LM5149-Q1EVM-2100

Texas Instruments LM5149-Q1 | Demoboard LM5149-Q1EVM-2100

3.5-V to 80-V Synchronous Buck DC/DC Controller

Overview

TopologyBuck Converter
Input voltage3.5-80 V
Output 15 V / 8 A
IC revisionA

Description

The LM5149-Q1EVM-2100 evaluation module (EVM) is a synchronous buck DC/DC regulator that employssynchronous rectification to achieve high conversion efficiency in a small footprint. It operates over a wide input voltage range of V to 80 V, providing a regulated output of 5 V. The output voltage has better than 1% setpoint accuracy and are adjustable by modifying the feedback resistor values, permitting the user to customize the output voltage from 2.5 V to 12 V as needed.

Features

  • Wide input voltage (wide VIN) range of 3.5 V to 80 V
  • Spread spectrum modulation and active EMI filtering for lower EMI
  • Wide duty cycle range with low tON(min) and tOFF(min)
  • Ultra-low shutdown and no-load standby quiescent currents
  • Multiphase capability
  • Peak current-mode control loop architecture
  • Integrated, high-current MOSFET gate drivers
  • Cycle-by-cycle overcurrent protection with programmable hiccup
  • Functional-safety capable

Typical applications

  • High-current automotive electronic systems, Automotive HEV/EV powertrain systems

More information

Parts approved by Texas Instruments

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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
ISAT,10%(A)
RDC max.(mΩ)
SamplesAvailability & Sample
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744373490056
SPECWE-LHMI SMT Power Inductor, 0.56 µH, 17.6 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-LHMI SMT Power Inductor
Inductance0.56 µH
Performance Rated Current17.6 A
Saturation Current @ 30%36.4 A
DC Resistance3.6 mΩ
Self Resonant Frequency85 MHz
Operating Voltage120 V
MountSMT 
Saturation Current @ 10%19.9 A
DC Resistance4.2 mΩ
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744383560068
SPECWE-MAPI SMT Power Inductor, 0.68 µH, 13.15 A
Simu­lation
Availability
–
Downloads10 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-MAPI SMT Power Inductor
Inductance0.68 µH
Performance Rated Current13.15 A
Saturation Current @ 30%12.7 A
DC Resistance7.5 mΩ
Self Resonant Frequency75 MHz
Operating Voltage80 V
MountSMT 
Saturation Current @ 10%5.8 A
DC Resistance9 mΩ
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