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reference designEV28256EL-00A

Monolithic Power Systems EV28256EL-00A

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

Overview

TopologyBuck Converter
Input voltage4.5-21 V
Output 11.2 V / 3 A
IC revision1.0

Description

The EV28256EL-00A is for demonstrating MPS’s MP28256, a high frequencysynchronous rectified step-down switch mode converter with built in internal power MOSFETs.MP28256 offers a very compact solution toachieve 3A continuous output current over a wide input supply range with excellent load and line regulation. The MP28256 operates at high 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 thermal shutdown.

The MP28256 requires a minimum number of readily available standard external components and comes in a space saving 3x4mm 14-pinQFN package.

Features

  •  Wide 4.5V 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
  •  Frequency SYNC from 300kHz to 2MHz
  • External Clock
  •  External Soft Start
  •  OCP and Thermal Shutdown
  •  Available in 14-pin QFN3x4 Package

Typical applications

  • Cable Modems
  • DSL Modems
  • Set Top Boxes

More information

Products

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Data­sheet
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Product series
L(µH)
IRP,40K(A)
ISAT,10%(A)
ISAT,30%(A)
RDC(mΩ)
fres(MHz)
Material
Qty.
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7443552280
SPECWE-HCI SMT Flat Wire High Current Inductor, 2.8 µH, 12.1 A
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Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-HCI SMT Flat Wire High Current Inductor
Inductance2.8 µH
Performance Rated Current12.1 A
Saturation Current @ 10%4.8 A
Saturation Current @ 30%11 A
DC Resistance10.6 mΩ
Self Resonant Frequency46 MHz
MaterialWE-PERM 
Packaging Unit800 
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