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reference designNCP3296

Onsemi NCP3296

40 A Stackable Synchronous Buck Regulator

Overview

TopologyBuck Converter
Input voltage3-18 V
Output 15.5 V / 40 A
IC revision2

Description

The NCP3296, a highly efficient stackable synchronous buck regulator, is capable of operating with an input range from 3 V to 18 V and supporting up to 40 A continuous load currents. Higher output currents can be achieved by 2, 3, or 4 parallel NCP3296 devices operating as an interleaved multi−phase buck regulator.The NCP3296 utilizes fixed−frequency current−mode control to provide accurate voltage regulation and fast transient response. Flexible programming of function and parameters supports multiple applications.

Features

  • VIN: 3 − 18 V with Input Feed−Forward
  • VOUT: 0.5 − 5.5 V with Remote Output Voltage Sense
  • 40 A Continuous Output Current – Stackable to 160 A
  • Fixed Frequency Current Mode Control
  • Integrated 5 V LDO or External Supply
  • Enable with Programmable VIN UVLO
  • Programmable Boot−Up Voltage
  • Programmable Soft−Start
  • Pre−Bias Start−Up
  • Programmable Current Limit
  • Power Good Indicator
  • Selectable Protection Mode (Latch−off or Hiccup)
  • Under−Voltage and Over−Voltage Protection
  • Output Discharge in Shutdown
  • 150°C Operating Junction Temperature

Typical applications

  • Server and Desktop Computers, Notebooks, Gaming
  • Routers and Switches, Telecom Digital Baseband, Telecom Radio Unit
  • High Density Power Solutions, DC/DC Modules, General Purpose POL Regulator

More information

Parts approved by Onsemi

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
L(nH)
LR(nH)
IR(A)
ISAT,10%(A)
ISAT,30%(A)
RDC(mΩ)
fres(MHz)
Material
IRP,40K(A)
RDC max.(mΩ)
Mount
SamplesAvailability & Sample
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744305033
SPECWE-HCM SMT High Current Flat Wire Inductor, 330 nH, 270 nH

PCN pending

Due to a pending PCN there will be a new datasheet revision issued for this order code soon. Please find the actual as well based on valid PCN date the new revision datasheet below. If you have further questions please get in contact with our sales staff.

Simu­lation
Availability
–
Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-HCM SMT High Current Flat Wire Inductor
Inductance330 nH
Rated Inductance270 nH
Rated Current26 A
Saturation Current @ 10%23.6 A
Saturation Current @ 30%27.7 A
DC Resistance0.155 mΩ
Self Resonant Frequency22 MHz
MaterialMnZn 
Performance Rated Current63 A
–
MountSMT 
–Check availability
744373770056
SPECWE-LHMI SMT Power Inductor, 560 nH, –
Simu­lation
Availability
–
Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-LHMI SMT Power Inductor
Inductance560 nH
–
–
Saturation Current @ 10%16.8 A
Saturation Current @ 30%42.8 A
–
Self Resonant Frequency59 MHz
–
Performance Rated Current32.9 A
DC Resistance1.7 mΩ
MountSMT 
–Check availability