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reference designIR3838M

Infineon Technologies IR3838M

HIGHLY INTEGRATED 10A SINGLE-INPUT VOLTAGE, SYNCHRONOUS BUCK REGULATOR

Overview

TopologyBuck Converter
Input voltage12 V
Switching frequency225-1650 kHz
Output 11.8 V / 10 A
IC revision1.41

Description

The IR3838 SupIRBuckTM is an easy-to-use, fully integrated and highly efficient DC/DC regulator. The onboard PWM controller and MOSFETsmake IR3838 a space-efficient solution, providingaccurate power delivery for low output voltage applications.

IR3838 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 level security in the event of fault conditions.

IR3838 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 operatefrom 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 10A 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 6A and 14A Versions
  • Small Size 5mmx6mm PQFN, 0.9 mm Height
  • Lead-free, Halogen-free and RoHS Compliant

Typical applications

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

More information

Products

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Order Code
Data­sheet
Simu­lation
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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
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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 
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