NCP3231A: High Current Synchronous Buck Converter

The NCP3231A 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.

Features
  • Wide input voltage range from 4.5V to 18V
  • 500KHz switching frequency
  • Lossless low-side FET current sensing
  • 0.6V internal reference voltage
  • External programmable soft-start
  • Output over-voltage and under-voltage protection
  • System over-temperature protection using a thermistor or sensor through OTS pin
  • Hiccup mode operation for all faults
  • Pre-bias start-up
  • Adjustable output voltage
  • Power good indicator
  • Internal over-temperature protection
Benefits
  • Supports wide range of applications
  • Requires small inductor and low number of output capacitors
  • Good thermal performance
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
NCP3231A Design AidNCP3231A Design Aid (101kB)1Nov, 2016
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
High Current Synchronous Buck ConverterNCP3231A/D (153kB)3
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
NCP3231AMNTXGActivePb-free Halide freeQFN-40485CM3Tape and Reel2500Contact BDTIC
Specifications
ProductTopologyControl ModeVCC Min (V)VCC Max (V)VO Typ (V)IO Typ (A)Efficiency (%)fSW Typ (kHz)
NCP3231AMNTXGStep-DownVoltage Mode4.5183.32594500
High Current Synchronous Buck Converter (153kB) NCP3231A
NCP3231A Design Aid NCP3231A
NCP3231FamilySimplisModel NCP3235
QFN40 6x6, 0.5P NCP5339