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Monolithic Power Systems (MPS) MP4313 Synchronous Step-Down Converters

Monolithic Power Systems (MPS) MP4313 Synchronous Step-Down Converters offer a configurable frequency with integrated internal high-side and low-side power MOSFETs (HS-FET and LS-FET). The device delivers up to 3A of highly efficient output current (IOUT) with current mode control for fast loop response. A wide 3.3V to 45V input voltage (VIN) range on the MP4313 allows a variety of step-down applications in automotive input environments. A high-duty cycle and low-dropout mode enable automotive cold-crank conditions. The MP4313 converters offer a 1.7μA shutdown current (ISD) for battery-powered applications.

The MPS MP4313 synchronous step-down converters implement a high power conversion efficiency spanning the entire load range by scaling down the switching frequency (fSW) under light-load conditions. This operation also reduces switching and gate driver losses. Furthermore, an open-drain power good (PG) signal indicates whether the output is within 95% to 105% of its nominal voltage.

The Frequency foldback option prevents inductor current (IL) runaway during start-up, while a thermal shutdown supports a reliable, fault-tolerant operation.

The MP4313 is housed in a QFN-20 (4mm x 4mm) package.

Features

  • Wide 3.3V to 45V operating input voltage (VIN) range
  • Up to 3A continuous output current (IOUT)
  • 1.7μA Low shutdown current (ISD)
  • 18μA Sleep mode quiescent current (IQ)
  • 48mΩ/20mΩ Internal power MOSFETs
  • 350kHz to 1000kHz Configurable Switching Frequency (fSW) for car battery applications
  • Can be synchronized to an external clock
  • Out-of-phase synchronized clock output
  • Frequency Spread Spectrum (FSS) for Low Electromagnetic Interference (EMI)
  • Symmetric VIN for low EMI
  • Power Good (PG) output
  • External Soft Start (SS)
  • 100ns Minimum On Time (tON_MIN)
  • Selectable Advanced Asynchronous Modulation (AAM) Mode or Forced Continuous Conduction Mode (FCCM)
  • Low-Dropout (LDO) mode
  • Over-Current Protection (OCP) with hiccup mode
  • Available in a QFN-20 (4mm x 4mm) package
  • Available in a wettable flank package

Applications

  • Radios
  • Battery-powered systems
  • General-purpose consumer applications
  • Industrial power systems

Associated Board

Monolithic Power Systems (MPS) EVQ4313-R-01A Evaluation Board

Board is designed to facilitate the evaluation of the MPQ4313 step-down switching regulator.

Learn More关于Monolithic Power Systems (MPS) EVQ4313-R-01A Evaluation Board View Products与Monolithic Power Systems (MPS) EVQ4313-R-01A Evaluation Board相关

Typical Application

Application Circuit Diagram - Monolithic Power Systems (MPS) MP4313 Synchronous Step-Down Converters
发布日期: 2022-11-14 | 更新日期: 2022-11-23