21A, High-Efficiency, Fully Integrated Synchronous Boost Converter Evaluation Board

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Product Description

The EV3431-L-00A evaluation board is designed to demonstrate the capability of the MP3431. The MP3431 is a 600kHz, fixed-frequency, wide input range, highly integrated boost converter. It starts from an input voltage as low as 2.7V, and supports up to 30W of load power from a single-cell battery.

The MP3431 adopts constant-off-time (COT) control topology providing fast transient response. The MODE pin supports mode selection including PSM, FCCM, and USM in light-load conditions, and the integrated LS-FET and HS-FET simplify the design and save BOM cost.

The device features programmable input current limit to provide accurate overload protection while the LS-FET limits cycle-by-cycle inductor peak current. It also features programmable input UVLO and over-temperature protection. The MP3431 is available in a QFN-13 (3mmx4mm) package.

Product Features

  • 2.7V to 13V Start-Up Voltage
  • 0.8V to 13V Operation Voltage
  • Up to 16V Output Voltage
  • Supports 30W Average Power Load and 40W Peak Power Load from 3.3V
  • Programmable Input Current Limit
  • 21.5A Internal Switching Current Limit
  • Integrated 6.5mΩ and 10mΩ Power MOSFETs
  • >95% Efficiency for 3.6V VIN to 9V/3A
  • Selectable PSM, >23kHz USM, and FCCM Mode in Light-Load Conditions
  • 600kHz Fixed Switching Frequency
  • Adaptive COT for Fast Transient Response
  • External Soft Start and Compensation Pin
  • Programmable UVLO and Hysteresis
  • 150°C Over-Temperature Protection
  • Available in a QFN-13 (3mmx4mm) Package


21A, 16Vout High Efficiency Full-Integrated Synchronous High Power Boost Converter with Programmable Input Current Limit

The MP3431 is a 600kHz, fixed-frequency, wide input range, highly integrated, boost converter. The MP3431 starts from an input voltage as low as 2.7V and supports up to 30W of load power from a 1-cell battery with integrated low RDS(ON) power MOSFETs.
The MP3431 adopts constant-off-time (COT) control topology, which provides fast transient response. MODE supports the selection of pulse-skip mode (PSM), forced continuous conduction mode (FCCM), and ultrasonic mode (USM) in light-load condition. The programmable input current limit provides accurate overload protection. The low-side MOSFET limits the cycle-by-cycle inductor peak current, and the high-side MOSFET eliminates the need for an external Schottky diode.
Full protection features include programmable input under-voltage lockout (UVLO) and over-temperature protection (OTP).
The MP3431 is available in a QFN-13 (3mmx4mm) package.

Quality Policy, Certificates & Reliability Reports
All MPS parts are lead-free, halogen-free and adhere to the RoHS directive. See Environmental section for details.