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reference designIR3898M

Infineon Technologies IR3898M

6A Highly Integrated SupIRBuckTM Single-Input Voltage, Synchronous Buck Regulator

Overview

TopologyBuck Converter
Input voltage6.8-16 V
Switching frequency270-1650 kHz
Output 11.2 V / 6 A
Output 23.3 V / 6 A
IC revision3.5

Description

The IR3898 SupIRBuckTM is an easy-to-use, fully integrated and highly efficient DC/DC regulator. The onboard PWM controller and MOSFETs make IR3898 a space-efficient solution, providing accurate power delivery.IR3898 is a versatile regulator which offers programmable switching frequency and the fixed internal current limit while operates in wide input and output voltage range.The switching frequency is programmable from 300kHz 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 fault conditions.

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 +/-6A)
  • 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: 4mm x 5mm PQFN
  • Lead-free, Halogen-free and RoHS Compliant

Typical applications

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

More information

Parts approved by Infineon Technologies

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
L(µH)
IRP,40K(A)
ISAT,10%(A)
ISAT,30%(A)
RDC max.(mΩ)
Material
LR(µH)
fres(MHz)
SamplesAvailability & Sample
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7443340330
SPECWE-HCC SMT High Current Cube Inductor, 3.3 µH, 12.3 A

PCN pending

Due to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff.

Simu­lation
Availability
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Downloads9 files

Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
Product seriesWE-HCC SMT High Current Cube Inductor
Inductance3.3 µH
Performance Rated Current12.3 A
Saturation Current @ 10%8.4 A
Saturation Current @ 30%10.8 A
DC Resistance8.2 mΩ
MaterialFerrite 
Rated Inductance1.55 µH
Self Resonant Frequency81 MHz
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