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reference designMPQ28261 | Demoboard MPQ28261EVB

Monolithic Power Systems MPQ28261 | Demoboard MPQ28261EVB

21V, 3A 500kHz Synchronous Step-down Converter EV Board

Overview

TopologyBuck Converter
Input voltage7-21 V
Output 11.2 V / 3 A
IC revision1.0

Description

The EVQ28261-L-00A is for demonstrating MPS’s MPQ28261, a high frequency synchronous rectified step-down switch mode converter with built in internal power MOSFETs. MPQ28261 offers a very compact solution to achieve 3A continuous output current over a wide input supply range with excellent load and line regulation. The MPQ28261 operates athigh efficiency over a wide output current load range.

Current mode operation provides fast transient response and eases loop stabilization. The full protection features include OCP and thermalshutdown.

The MPQ28261 requires a minimum number of readily available standard external components and comes in a space saving 3x4mm 14-pinQFN package.

Features

  • Wide 7V to 21V Operating Input Range
  • 0.6V Internal Reference with 2% Accuracy
  • 3A Output Current
  • Low Rds(ON) Internal Power MOSFETs
  • Fixed 500kHz Switching Frequency
  • External Soft Start
  • OCP and Thermal Shutdown
  • Available in 14-pin QFN3x4 Package.

Typical applications

  • Cable Modems
  • Set Top Boxes
  • DSL Modems

More information

Products

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Data­sheet
Simu­lation
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Status
Product series
L(µH)
IRP,40K(A)
ISAT,10%(A)
ISAT,30%(A)
RDC(mΩ)
fres(MHz)
Material
Qty.
SamplesAvailability & Sample
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744311220
SPECWE-HCI SMT Flat Wire High Current Inductor, 2.2 µH, 10.2 A
Simu­lation
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Downloads9 files

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Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-HCI SMT Flat Wire High Current Inductor
Inductance2.2 µH
Performance Rated Current10.2 A
Saturation Current @ 10%5.6 A
Saturation Current @ 30%13 A
DC Resistance11.4 mΩ
Self Resonant Frequency52 MHz
MaterialSuperflux 
Packaging Unit1000 
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