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IC manufacturers Infineon Technologies

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reference designIR3894

Infineon Technologies IR3894

12A Highly Integrated SupIRBuck Single‐Input Voltage, Synchronous Buck Regulator

Overview

TopologyBuck Converter
Input voltage12 V
Switching frequency300-1500 kHz
Output 11 V / 12 A
Output 21.2 V / 12 A
Output 31.8 V / 12 A
Output 45 V / 12 A
Output 53.3 V / 12 A
IC revision3.4

Description

The IR3894 SupIRBuckTM is an easy‐to‐use, fully integrated and highly efficient DC/DC regulator. The onboard PWM controller and MOSFETs makeIR3894 a space‐efficient solution, providing accurate power delivery.IR3894 is a versatile regulator which offers programmable switching frequency and the fixed internal current limit The switching frequency is programmable from 300 kHz to 1.5MHz for an optimum solution.It also features important protection functions, such as Pre‐Bias startup, thermally compensated current limit over voltage protection and thermal shutdown to give required system level security in the event of faultconditions.

Features

  • Single 5V to 21V application
  • Wide Input Voltage Range from 1.0V to 21V with external Vcc
  • Output Voltage Range: 0.5V to 0.86* Vin
  • Enhanced Line/Load Regulation with Feed‐Forward
  • Programmable Switching Frequency up to 1.5MHz
  • Internal Digital Soft‐Start/Soft‐Stop
  • Enable input with Voltage Monitoring Capability
  • Thermally Compensated Current Limit with robust hiccup mode over current protection
  • Smart internal LDO to improve light load and full load efficiency
  • External Synchronization with Smooth Clocking
  • Enhanced Pre‐Bias Start‐Up
  • Precision Reference Voltage (0.5V+/‐0.5%) with margining capability
  • Vp for Tracking Applications ((Source/Sink Capability +/‐12A)
  • Integrated MOSFET drivers and Bootstrap Diode
  • Thermal Shut Down
  • Programmable Power Good Output with tracking capability
  • Monotonic Start-Up
  • Operating temp: ‐40oC < Tj < 125oC
  • Small Size: 5mm x 6mm PQFN
  • Lead‐free, Halogen‐free and RoHS Compliant

Typical applications

  • Distributed Point of Load Power Architectures
  • Server Applications
  • Storage Applications
  • Netcom Applications
  • Embedded Telecom Systems

More information

Products

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
L(µH)
IRP,40K(A)
ISAT,10%(A)
ISAT,30%(A)
RDC(mΩ)
fres(MHz)
Material
Qty.
SamplesAvailability & Sample
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744325072
SPECWE-HCI SMT Flat Wire High Current Inductor, 0.72 µH, 37.8 A
Simu­lation
Availability
–
Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-HCI SMT Flat Wire High Current Inductor
Inductance0.72 µH
Performance Rated Current37.8 A
Saturation Current @ 10%14 A
Saturation Current @ 30%35 A
DC Resistance1.3 mΩ
Self Resonant Frequency115 MHz
MaterialSuperflux 
Packaging Unit700 
–Check availability
744325120
SPECWE-HCI SMT Flat Wire High Current Inductor, 1.2 µH, 32.6 A
Simu­lation
Availability
–
Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-HCI SMT Flat Wire High Current Inductor
Inductance1.2 µH
Performance Rated Current32.6 A
Saturation Current @ 10%12 A
Saturation Current @ 30%25 A
DC Resistance1.8 mΩ
Self Resonant Frequency75 MHz
MaterialSuperflux 
Packaging Unit700 
–Check availability