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reference designIR3839M

Infineon Technologies IR3839M

HIGHLY INTEGRATED 6A SINGLE-INPUT VOLTAGE, SYNCHRONOUS BUCK REGULATOR

Overview

TopologyBuck Converter
Input voltage12 V
Switching frequency225-1650 kHz
Output 15 V / 6 A
IC revision1.41

Description

The IR3839 SupIRBuckTM is an easy-to-use, fully integrated and highly efficient DC/DC regulator. The onboard PWM controller and MOSFETsmake IR3839 a space-efficient solution, providing accurate power delivery for low output voltage applications.

IR3839 is a versatile regulator which offers programmability of switching frequency and current limit while operates in wide input and output voltage range.

The switching frequency is programmable from 250kHz to 1.5MHz for an optimum solution.

It also features important protection functions,such as Pre-Bias startup, hiccup current limit and thermal shutdown to give required system levelsecurity in the event of fault conditions.

IR3839 offers margining capability through Vref pin. During the margining operation, PGood tracks Vref via feedback to ensure correct statusof the output voltage.

The internal LDO enables the device to operate from a single supply. This internal LDO can be bypassed when an external bias voltage is available.

Features

    • Greater than 96% Maximum Efficiency
    • Single 16V Application
    • Single 5V Application
    • Wide Output Voltage Range: 0.6V to 0.9*Vin
    • Continuous 6A Load Capability
    • Programmable Switching Frequency up to 1.5MHz
    • Internal Digital Soft-Start
    • Enable Input with Voltage Monitoring Capability
    • Hiccup Mode Over Current Protection
    • Internal LDO
    • External Synchronization
    • Enhanced PreBias Start up
    • External Reference for Margining Purposes
    • Input for Tracking Applications
    • Integrated MOSFET Drivers and Bootstrap Diode
    • Operating Junction Temp: -40oC <Tj<125oC
    • Thermal Shut Down
    • Power Good Output with tracking capability
    • Over Voltage Detection Feature
    • Pin Compatible with 10A and 14A Versions
    • Small Size 5mmx6mm PQFN, 0.9 mm Height
    • Lead-free, Halogen-free and RoHS Compliant

Typical applications

  • Distributed Point of Load Power Architectures
  • Data Center Applications
  • Netcom and Telecom Applications

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(mΩ)
fres(MHz)
Material
Qty.
SamplesAvailability & Sample
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744325240
SPECWE-HCI SMT Flat Wire High Current Inductor, 2.4 µH, 18.6 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-HCI SMT Flat Wire High Current Inductor
Inductance2.4 µH
Performance Rated Current18.6 A
Saturation Current @ 10%6.9 A
Saturation Current @ 30%17 A
DC Resistance4.75 mΩ
Self Resonant Frequency67 MHz
MaterialSuperflux 
Packaging Unit700 
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