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reference designMP38876

Monolithic Power Systems MP38876

15A, 28V, High Frequency Step-Down Converter with Synchronous Gate Driver

Overview

TopologyBuck Converter
Input voltage4.5-28 V
Output 11.2 V / 15 A
IC revision0.91

Description

The MP38876 is a monolithic step-down switch mode converter with a built in internal power MOSFET. It achieves 15A continuous output current over a wide input supply range with excellent load and line regulation.Current mode operation provides fast transient response and eases loop stabilization.Fault condition protection includes cycle-by-cycle current limiting and thermal shutdown.The MP38876 requires a minimum number of readily available standard external components and is available in a 20-pin 3mm x 4mm QFN package.The MP38876 is ideal for a wide range of applications including distributed power systems, pre-regulator for linear regulators, compact DC- DC regulators for PCB space limited platforms.

Features

  • Wide 4.5V to 28V Operating Input Range
  • 15A Output Current
  • 25mΩ Internal Power MOSFET Switch
  • Synchronous Gate Driver
  • Synch from 300kHz to > 1MHz External Clock or 400kHz Fixed Switching Frequency
  • Synch Output to Drive Another Regulator in Phase-Shift Operation
  • Feedback Voltage Accuracy: 2%
  • Programmable Soft-Start
  • Startup Tracking
  • EN and Power Good for Power Sequencing
  • Cycle-by-Cycle Over Current Protection
  • Thermal Shutdown
  • Output Adjustable from 0.8V to 12V
  • Stable with Low ESR Output Ceramic Capacitors
  • Available in a 3mm x 4mm QFN Package

Typical applications

  • Pre-Regulator for Linear Regulators
  • Compact DC-DC Regulator for PCB Space Limited Platforms
  • Distributed Power Systems

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
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744325072
SPECWE-HCI SMT Flat Wire High Current Inductor, 0.72 µH, 37.8 A
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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
Inductance0.72 µH
Performance Rated Current37.8 A
Saturation Current @ 10%14 A
Saturation Current @ 30%35 A
DC Resistance1.3 mΩ
Self Resonant Frequency115 MHz
MaterialSuperflux 
Packaging Unit700 
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