NCP3231: High Current Synchronous Buck Converter

The NCP3231 is a high current, high efficiency voltage-mode synchronous buck converter which operates from 4.5 V to 18 V input and generates output voltages down to 0.6 V at up to 25 A DC load or 30 A instantaneous load.

Features
  • Wide input voltage range from 4.5V to 18V
  • 500KHz switching frequency
  • Lossless low-side FET current sensing
  • 0.6V internal reference volttage
  • External programmable soft-start
  • Output Over-voltage Protection and Under-voltage Protection
  • System Over-temperature Protection using a Thermistor or Sensor
  • Hiccup Mode Operation for all Faults
  • Pre-bias Start-up
  • Adjustable Output Voltage
  • Power Good Output
  • Internal Over-temperature Protection
Benefits
  • Supports wide range of applications
  • Requires small inductor and low number of output capacitors
  • Improve efficiency
Applications
  • 25A voltage regulators in a 6x6 QFN pacakge
  • ASIC, FPGA, DSP and CPU Core and I/O Supplies
End Products
  • Cellular Base Stations
  • Telecom and Network Equipment
  • Server and Storage System
Design & Development Tools (1)
Document TitleDocument ID/SizeRevisionRevision Date
NCP3231 Design AidNCP3231 Design Aid (101kB)0Nov, 2016
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
High Current Synchronous Buck ConverterNCP3231/D (157kB)5May, 2015
Package Drawings (1)
Document TitleDocument ID/SizeRevision
QFN40 6x6, 0.5P485CM (58.7kB)O
Simulation Models (1)
Document TitleDocument ID/SizeRevisionRevision Date
NCP3231FamilySimplisModelNCP3231FamilySimplisModel (39kB)0Aug, 2016
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
NCP3231MNTXGActivePb-free Halide freeQFN-40485CM3Tape and Reel2500$1.2
Specifications
ProductTopologyControl ModeVCC Min (V)VCC Max (V)VO Typ (V)IO Typ (A)Efficiency (%)fSW Typ (kHz)
NCP3231MNTXGStep-DownVoltage Mode4.5183.32594500
High Current Synchronous Buck Converter (157kB) NCP3231
NCP3231 Design Aid NCP3231
NCP3231FamilySimplisModel NCP3235
QFN40 6x6, 0.5P NCP5339
NCP3231