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reference designLMQ644A2-Q1 | Demoboard LMQ644A2QEVM-D2100

Texas Instruments LMQ644A2-Q1 | Demoboard LMQ644A2QEVM-D2100

LMQ644A2-Q1 dual output synchronous buck converter evaluation module

Overview

TopologyBuck Converter
Input voltage6-36 V
Output 13.3 V / 6 A
Output 25 V / 6 A
IC revisionA

Description

The LMQ644A2QEVM-D2100 evaluation module (EVM) evaluates the features and performance of the LMQ644A2-Q1, dual buck DC/DC converter with integrated power MOSFETs. The EVM provides dual 6 A outputs. The output voltage can be individually programmed to a fixed 3.3 V and 5 V or adjustable using external feedback resistors. Each channel can be enabled and or disabled by a jumper selection.

Features

  • 6 V to 36 V input voltage range
  • 5 V and 3.3 V output voltages
  • Rated for 6 A per channel
  • Ultra low IQ
  • Dual-random spread spectum

Typical applications

  • Automotive infotainment and cluster: head unit, media hub, USB charge, display
  • Automotive ADAS and body electronics, Automotive infotainment and cluster: head unit, media hub, USB charge, display

More information

Parts approved by Texas Instruments

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
Pins
Application
PCB/Cable/Panel
Modularity
Type
Wire Section
Z @ 100 MHz(Ω)
Zmax(Ω)
IR(A)
RDC(mΩ)
Version
C
VR(V (DC))
Endurance(h)
IRIPPLE(mA)
Z(mΩ)
ILeak(µA)
DF(%)
Ø D(mm)
L(mm)
Packaging
Mount
H(mm)
Working Voltage(V (AC))
Operating Temperature
SamplesAvailability & Sample
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61300211121
SPECWR-PHD Pin Header - Single, 2, –
Simu­lation–
Availability
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Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWR-PHD Pin Header - Single
Pins2 
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TypeStraight 
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Rated Current3 A
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Length5.08 mm
PackagingBag 
MountTHT 
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Working Voltage250 V (AC)
Operating Temperature -40 °C up to +105 °C
–Check availability
691101710002
SPECWR-TBL Series 101 - 5.00 mm Horizontal Entry Modular, 2, Wire Protector
Simu­lation–
Availability
–
Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWR-TBL Series 101 - 5.00 mm Horizontal Entry Modular
Pins2 
ApplicationWire Protector 
PCB/Cable/PanelPCB 
ModularityYes 
TypeHorizontal 
Wire Section 26 to 14 (AWG) 0.5 to 2.5 (mm²)
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Rated Current16 A
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Length10 mm
PackagingBox 
MountTHT 
Height12.6 mm
Working Voltage250 V (AC)
Operating Temperature -40 °C up to +105 °C
–Check availability
61300311121
SPECWR-PHD Pin Header - Single, 3, –
Simu­lation–
Availability
–
Downloads7 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWR-PHD Pin Header - Single
Pins3 
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–
–
TypeStraight 
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–
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Rated Current3 A
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–
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–
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Length7.62 mm
PackagingBag 
MountTHT 
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Working Voltage250 V (AC)
Operating Temperature -40 °C up to +105 °C
–Check availability
865080645012
SPECWCAP-ASLI Aluminum Electrolytic Capacitors, –, –
Simu­lation
Availability
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Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWCAP-ASLI Aluminum Electrolytic Capacitors
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VersionSMT 
Capacitance47 µF
Rated Voltage50 V (DC)
Endurance 2000
Ripple Current230 mA
Impedance700 mΩ
Leakage Current23.5 µA
Dissipation Factor12 %
Diameter6.3 mm
Length7.7 mm
Packaging15" Tape & Reel 
MountV-Chip SMT 
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–
Operating Temperature -55 °C up to +105 °C
–Check availability
78279225101
SPECWE-MPSA EMI Multilayer Power Suppression Bead, –, –
Simu­lation–
Availability
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Downloads10 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-MPSA EMI Multilayer Power Suppression Bead
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TypeHigh Current 
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Impedance @ 100 MHz100 Ω
Maximum Impedance160 Ω
Rated Current10 A
DC Resistance4 mΩ
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Length8.5 mm
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MountSMT 
Height2.28 mm
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Operating Temperature -55 °C up to +125 °C
–Check availability

Additional parts recommended by Würth Elektronik

Recommended parts are Würth Elektronik alternatives that are not formally approved for this reference design. Please verify it is suitable for your application, and contact us if you have any questions.

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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)
SamplesAvailability & Sample
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7443845030010
SPECWE-MXGI SMT Power Inductor, 1 µH, 15.8 A

PCN pending

Due to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff.

Simu­lation
Availability
–
Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-MXGI SMT Power Inductor
Inductance1 µH
Performance Rated Current15.8 A
Saturation Current @ 30%14.3 A
DC Resistance5.2 mΩ
Self Resonant Frequency52 MHz
Operating Voltage80 V
–Check availability