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reference designIR3837M

Infineon Technologies IR3837M

HIGHLY INTEGRATED 14A SINGLE-INPUT VOLTAGE, SYNCHRONOUS BUCK REGULATOR

Overview

TopologyBuck Converter
Input voltage12 V
Switching frequency225-1650 kHz
Output 12.5 V / 14 A
IC revision1.31

Description

The IR3837 SupIRBuckTM is an easy-to-use, fully integrated and highly efficient DC/DC regulator.

The onboard PWM controller and MOSFETs make IR3837 a space-efficient solution, providing accurate power delivery for low output voltageapplications. IR3837 is a versatile regulator which offers programmability of switching frequency and current limit while operates in wide input andoutput 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.

IR3837 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 isavailable.

Features

  • Greater than 96% Maximum Efficiency
  • Single 16V Application
  • Single 5V Application
  • Wide Output Voltage Range: 0.6V to 0.9*Vin
  • Continuous 14A 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 10A Versions
  • Small Size 5mmx6mm PQFN, 0.9 mm Height
  • Lead-free, Halogen-free and RoHS Compliant

Typical applications

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

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 max.(mΩ)
Material
LR(µH)
fres(MHz)
SamplesAvailability & Sample
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7443320068
SPECWE-HCC SMT High Current Cube Inductor, 0.68 µH, 40.2 A
Simu­lation
Availability
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Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-HCC SMT High Current Cube Inductor
Inductance0.68 µH
Performance Rated Current40.2 A
Saturation Current @ 10%35.8 A
Saturation Current @ 30%39.1 A
DC Resistance1.85 mΩ
MaterialFerrite 
Rated Inductance0.66 µH
Self Resonant Frequency108 MHz
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