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Monolithic Power Systems (MPS) MPM3551 Synchronous Step-Down Modules

Monolithic Power Systems (MPS) MPM3551 Synchronous Step-Down Modules are easy-to-use, fully integrated, synchronous step-down power modules with a built-in inductor and power MOSFETs. These modules integrate 70mΩ high-side MOSFET and 50mΩ low-side MOSFET for improved performance. The MPM3551 power modules achieve up to 3A of continuous output current (IOUT) with excellent load and line regulation. These power modules operate at a wide 3.3V to 36V input voltage range and are designed with a 42V load dump tolerance. A 1μA shutdown mode quiescent current (IQ) allows the device to be used in battery-powered applications. The MPM3551 step-down modules are AEC-Q100 qualified and are ideal for a wide range of applications with constrained PCB areas. Some of the applications include automotive infotainment, automotive clusters, Advanced Driver-Assistance Systems (ADAS), and industrial power systems.

Features

  • Designed for automotive applications:
    • 42V load dump tolerance
    • Supports 3.1V cold crank conditions
    • Low-Dropout (LDO) mode
    • Up to 3A of continuous output current (IOUT)
    • Continuous operation up to 36V
    • -40°C to 150°C operating junction temperature (TJ)
  • Increases battery life:
    • 1μA shutdown supply current (ISD)
    • 20μA sleep mode (IQ)
    • AAM mode
  • Optimized for EMC and EMI:
    • Frequency Spread Spectrum (FSS) modulation
    • Symmetric VIN pinout
    • Integrated 1µH power inductor
    • CISPR25 Class 5 compliant
    • 2.2MHz fixed switching frequency (fSW)
    • MeshConnect™ flip-chip package
  • High performance for improved thermals:
    • Integrated 70mΩ high-side MOSFET and 50mΩ low-side MOSFET
    • 65ns minimum ON time (tON_MIN) and 50ns minimum OFF time (tOFF_MIN)
  • Power Good (PG) output
  • Adjustable output from 0.8V
  • Fixed output options of 1V, 1.8V, 2.5V, 3V, 3.3V, 3.8V, or 5V
  • Over-Current Protection (OCP) in hiccup mode
  • Available in a QFN-20 (4mm x 6mm) package with wettable flanks
  • Available in AEC-Q100 Grade 1
  • Functional safety system design capability:
    • Documents available for MPSafe™ QM system design

Applications

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

Typical Application Circuits

Application Circuit Diagram - Monolithic Power Systems (MPS) MPM3551 Synchronous Step-Down Modules

Block Diagrams

Block Diagram - Monolithic Power Systems (MPS) MPM3551 Synchronous Step-Down Modules

Related Module

Monolithic Power Systems (MPS) MPM3551C Synchronous Step-Down Modules

36V, 3A, low quiescent current, synchronous step-down power modules with AEC-Q100 qualified.

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Published: 2024-06-24 | Updated: 2024-06-27