21V, 3A 500kHz Synchronous Step-down Converter EV Board
  • Quantity Price
  • 1
    $25.00 /unit

Learn about our Evaluation Kit
Talk to an Engineer or get a Quote

Product Description

The EVQ28261-L-00A is for demonstrating MPS’s MPQ28261, a high frequency synchronous rectified step-down switch mode converter with built in internal power MOSFETs. MPQ28261 offers a very compact solution to achieve 3A continuous output current over a wide input supply range with excellent load and line regulation. The MPQ28261 operates at high efficiency over a wide output current load range.

Current mode operation provides fast transient response and eases loop stabilization. The full protection features include OCP and thermal shutdown.

The MPQ28261 requires a minimum number of readily available standard external components and comes in a space saving 3x4mm 14-pin QFN package.

Product Features

  • Wide 7V to 21V Operating Input Range
  • 0.6V Internal Reference with 2% Accuracy
  • 3A Output Current
  • Low Rds(ON) Internal Power MOSFETs
  • Fixed 500kHz Switching Frequency
  • External Soft Start
  • OCP and Thermal Shutdown
  • Available in 14-pin QFN3x4 Package


21V, 3A, 500kHz Synchronous Step-down Converter

The MPQ28261 is a synchronous, rectified, step-down, switch-mode converter with built-in 120mΩ high-side MOSFET and 20mΩ low-side MOSFET. It offers a very compact solution to achieve a continuous 3A output current over a wide input supply range, with excellent load and line regulation. Its synchronous mode operation increases its efficiency over its output current load range, and uses a fixed 500kHz switching frequency.  Current mode operation provides a fast transient response and improves loop stabilization. Full protection features include over-current protection and thermal shut down.  The MPQ28261 has an external SS pin to program the soft-start time and power-good signal output.  The MPQ28261 requires a minimal number of readily-available standard external components and is available in a space saving 3mmx4mm 14-pin QFN 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.