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Monolithic Power Systems (MPS) MPQ4328 36V Switching Voltage Regulators

Monolithic Power Systems (MPS) MPQ4328 36V Switching Voltage Regulators are 4A, low quiescent current synchronous step-down converters. These voltage regulators operate at 200kHz to 2.5MHz configurable frequency range. The MPQ4328 voltage regulators are step-down switching converters with an integrated, internal High-Side MOSFET (HS-FET) and Low-Side MOSFET (LS-FET). These voltage regulators operate at a wide 3.3V to 36V input voltage (VIN) range that accommodates a variety of step-down applications in an automotive input environment. The MPQ4328 regulators are AEC-Q100 qualified and RoHS compliant. These switching regulators are available in a QFN-14 (4mm x 4mm) package. The MPQ4328 regulators are ideal for automotive clusters, automotive infotainment systems, Advanced Driver-Assistance Systems (ADAS), and industrial power systems.

The MPQ4328 36V switching voltage regulators offer 1μA quiescent current (IQ) in shutdown mode that allows the device to be used in battery-powered applications. These regulators have a feature where the frequency foldback prevents Inductor Current (IL) runaway during start-up. The MPQ4328 regulators operate at -40°C to 150°C Junction Temperature (TJ).

Features

  • Designed for automotive applications:
    • 42V load dump tolerance
    • Up to 36V operating input voltage (VIN)
    • Up to 4A continuous output current (IOUT)
    • Low-dropout mode
    • 50ns minimum on time (tON_MIN)
    • -40°C to 150°C operating Junction Temperature (TJ)
  • Available in AEC-Q100 Grade-1:
    • Increases battery life
    • 1μA low shutdown supply current
    • 24μA quiescent current (IQ) in sleep mode
    • 28μA IQ with switching
    • Advanced Asynchronous Modulation (AAM) mode increases efficiency at light loads
  • High Performance for improved thermals:
    • Internal 45mΩ high-side and 25mΩ low-side MOSFETs
  • Optimized for EMC/EMI reduction:
    • 200kHz to 2.5MHz configurable switching frequency (fSW) range
    • Frequency Spread Spectrum (FSS) modulation
    • Symmetric VIN pinout
    • CISPR25 Class 5 Compliant
    • MeshConnect™ Flip-Chip package
  • Additional features:
    • Fixed output options:
      • 1V, 1.8V, 2.5V, 3V, 3.3V, 3.8V, or 5V
    • Power Good (PG) output
    • Synchronizable to external clock
    • Over-Current Protection (OCP) with Hiccup mode
    • Available in a QFN-14 (4mm x 4mm) package with wettable flanks
  • Functional safety system design capability:
    • Documents available for MPSafe™ QM system design

Applications

  • Automotive infotainment systems
  • Automotive clusters
  • Advanced Driver-Assistance Systems (ADAS)
  • Industrial power systems

Typical Application Diagram

Application Circuit Diagram - Monolithic Power Systems (MPS) MPQ4328 36V Switching Voltage Regulators

Associated Board

Monolithic Power Systems (MPS) EVQ4328-R-00A Evaluation Board

Designed to demonstrate the capabilities of MPQ4328, synchronous, step-down switching converters.

Learn Moreabout Monolithic Power Systems (MPS) EVQ4328-R-00A Evaluation Board View Productsrelated to Monolithic Power Systems (MPS) EVQ4328-R-00A Evaluation Board
Published: 2024-05-23 | Updated: 2024-05-29