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reference designIR3742

Infineon Technologies IR3742

20A Integrated PowIRstage®

Overview

TopologyBuck Converter
Input voltage12 V
Switching frequency300-1500 kHz
Output 11.2 V / 20 A

Description

The IR3742 integrated PowIRstage® is a synchronous buck gate driver IC with co-packed control and synchronous MOSFETs and Schottky diode. It isoptimized internally for PCB layout, heat transfer and driver/MOSFET timing. Custom designed gate driver and MOSFET combination enables higher efficiency at lower output voltages required by cutting edge ASIC, FPGA and advanced controller.

Up to 1.5MHz switching frequency enables high performance transient response, allowing miniaturization of output inductors, as well as input andoutput capacitors while maintaining industry leading efficiency. The IR3742’s superior efficiency enables smallest size and lower solution cost.

The IR3742 includes an over current indicator and over temperature indicator in the event of a fault condition.

Features

  • Single input voltage range from 5V to 21V
  • Wide input voltage range from 1.0V to 21V with external VCC bias voltage
  • Integrated MOSFET drivers, Control FET, Synchronous FET with Schottky diode, bootstrap diode and the internal LDO
  • Enable input with voltage monitoring capability
  • Logic Level Tri-state PWM input
  • Thermally compensated Over Current Indicator
  • Open-drain over temperature and over current fault indication
  • Under-voltage Lockout of VCC/LDO_Out
  • Operating temp: -40°C < Tj < 125°C
  • Package size: 5mm x 6mm PQFN
  • RoHS6 Compliant, lead-free and halogen-free

Typical applications

  • Computing Applications
  • Distributed Point of Load Power Architectures
  • Storage Applications
  • Data Center Applications
  • Set Top Box Applications

More information

Products

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Product series
L(nH)
LR(nH)
IR(A)
ISAT,10%(A)
ISAT,30%(A)
RDC(mΩ)
fres(MHz)
Material
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744309047
SPECWE-HCM SMT High Current Flat Wire Inductor, 470 nH, 200 nH
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Downloads9 files

Status Activei| Production is active. Expected lifetime: >10 years.
Product seriesWE-HCM SMT High Current Flat Wire Inductor
Inductance470 nH
Rated Inductance200 nH
Rated Current47.5 A
Saturation Current @ 10%35.1 A
Saturation Current @ 30%46.8 A
DC Resistance0.165 mΩ
Self Resonant Frequency22 MHz
MaterialMnZn 
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