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Monolithic Power Systems (MPS) MPQ3438-AEC1 Synchronous Boost Converters

Monolithic Power Systems (MPS) MPQ3438-AEC1 Synchronous Boost Converters are 2.6MHz, quasi-fixed frequency, highly integrated boost converters that operate across a wide 0.8V to 10V input voltage (VIN) range. The MPQ3438 starts up from an input voltage (VST) as low as 2.7V and supports a switching current limit up to 2A with integrated, low-on-resistance [RDS(ON)] power MOSFETs. The MPS MPQ3438 converters come in an AEC-Q100 Grade 1 qualified, QFN-8 (1.5mm x 2mm) package.

The MPQ3438 adopts an adaptive constant-off-time (COT) control topology to provide a fast transient response. An internal frequency loop ensures that the operating frequency is fixed in a steady state. The low-side MOSFETs (LS-FET) cycle-by-cycle current limit prevents current runaway, and the high-side MOSFET (HS-FET) eliminates the need for an external Schottky diode. Full protections include configurable input under-voltage lockout (UVLO) and overtemperature protection (OTP).

Features

  • Flexible VIN and output voltage (VOUT) operating range
    • 2.7V to 10V VST range
    • 0.8V to 10V operating VIN
    • 1.25 x VIN to 16V VOUT
    • Up to 2A switching current limit
  • Reduces board size and BOM
    • 2.6MHz fixed switching frequency (fSW)
    • Available in a QFN-8 (1.5mm x 2mm) package
    • Integrated 55mΩ and 100mΩ power MOSFETs
  • Adaptive COT control for fast transient responses
  • Power-Save Mode (PSM) at light loads
  • Internal Soft Start (SS) and compensation
  • Frequency foldback for smooth startUp
  • Configurable Under-Voltage Lockout (UVLO) and hysteresis
  • UVLO, OTP, and OVP protections
  • AEC-Q100 Grade 1
  • MPSafe™-compatible, functional safety supporting document available

Applications

  • Automotive mechanical power supplies
  • Automotive LED drivers
  • Automotive infotainment

Specifications

  • 2.7V to 10V start-up input voltage range
  • 0.8V to 10V operating input voltage range
  • 0.9V to 10V start-up input voltage with VCC bias (VST2)
  • 3.6V maximum external VCC bias voltage
  • 2μA maximum shutdown current
  • 2.6MHz typical switching frequency
  • 1.7A to 2.7A switching current limit range
  • 30A maximum HS-FET body diode inrush current
  • 2.1W maximum continuous power dissipation
  • Thermal protection
    • +165°C thermal shutdown
    • +25°C thermal shutdown hysteresis
  • ESD ratings
    • Class 2 Human Body Model (HBM)
    • Class C2b Charged-Device Model (CDM)
  • -40°C to +125°C operating junction temperature range
  • +150°C maximum junction temperature
  • +260°C maximum lead temperature

Typical Application Circuit

Application Circuit Diagram - Monolithic Power Systems (MPS) MPQ3438-AEC1 Synchronous Boost Converters

Functional Block Diagram

Block Diagram - Monolithic Power Systems (MPS) MPQ3438-AEC1 Synchronous Boost Converters

Evaluation Board

Monolithic Power Systems (MPS) EVQ3438-QH-0000-00A Evaluation Board

Evaluates the MPQ3438-0000, 2.6MHz quasi-fixed frequency converter with a 0.8V to 10V input voltage.

Learn MoreMonolithic Power Systems (MPS) EVQ3438-QH-0000-00A Evaluation Board hakkında View ProductsMonolithic Power Systems (MPS) EVQ3438-QH-0000-00A Evaluation Board ile ilgili
Yayınlandı: 2025-03-20 | Güncellenmiş: 2025-03-26