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NCP3235GEVB: High Current Sync Buck Converter

The NCP3235GEVB Evaluation Board is a high current, high efficiency voltage mode synchronous buck converter which operates from 4.5 V to 23 V input and generates output voltages down to 0.6 V at up to 15 A continuous current. It has two operation modes: FCCM and automatic CCM/DCM. In automatic CCM/DCM mode, the controller can switch smoothly between CCM and DCM, where converter runs at reduced switching frequency to achieve much higher efficiency at light load. The NCP3235GEVB Evaluation Board is available in 6 mm x 6 mm QFN−40 pin package.

Features and Applications


  • Wide operating range 4.5 V to 21 V
  • Thermally enhanced QFN package
  • 550kHz/1.1MHz switching frequency
  • Ultra-sonic mode
  • DCM/CCM selectable options
  • Accurate 0.6 V reference
  • Adjustable soft start


  • Allows for use across multiple applications
  • Higher dissipation with 3 exposed pads
  • Design flexibility to select higher efficiency or smaller output filter
  • Keeps capacitors from making audio sounds
  • Operate in discontinuous mode for higher efficiency at light loads
  • Adjustable output to set desired voltage as low as 0.6 V
  • Allows smooth ramp up during power up


  • FGPA, ASIC, DSP power
  • Datacom/Networking
  • Computing/Servers
  • 12 V Point of load
Evaluation/Development Tool Information
Product Status Compliance Short Description Parts Used Action
NCP3235GEVB Active
High Current Sync Buck Converter NCP3235MNTXG
Technical Documents
Type Document Title Document ID/Size Rev
Eval Board: BOM NCP3235GEVB Bill of Materials (ROHS Compliant) NCP3235GEVB_BOM_ROHS - 153 KB  1 
Eval Board: Gerber NCP3235GEVB Gerber Layout Files (Zip Format) NCP3235GEVB_GERBER - 187 KB  1 
Eval Board: Schematic NCP3235GEVB Schematic NCP3235GEVB_SCHEMATIC - 103 KB  0 
Eval Board: Test Procedure NCP3235GEVB Test Procedure NCP3235GEVB_TEST_PROCEDURE - 342 KB  1 
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