New Product Introduction

Infineon Technologies OptiMOS™ IPOL DC-DC buck regulator

The IR388X OptiMOSTM IPOL is an easy-to-use, fully integrated DC-DC buck regulator

Infineon Technologies OptiMOS™ IPOL product image

The IR388X OptiMOSTM IPOL is an easy-to-use, fully integrated DC-DC buck regulator. The onboard PWM controller and OptiMOS™ MOSFETs with integrated bootstrap diode make the IR388x a small footprint solution, providing high-efficient power delivery. Furthermore, it uses a fast Constant-ON-Time (COT) control scheme, which simplifies the design efforts and achieves fast control response.


Key features

  • Infineon’s fast Constant-ON-Time engine with floor control
  • Featuring latest Infineon MOSFETs (OptiMOS™ 5) for enhanced efficiency
  • Thermally capable of up to 30 A in small 5 x 6 mm footprint
  • High switching frequency (up to 2 MHz) suitable for high-density design


Additional features

  • Wide input voltage range from 2.0 V to 17 V with an external VCC 
  • Precision reference voltage
  • Enhanced fast COT engine stable with ceramic output capacitors and no external compensation
  • Optional forced continuous conduction mode and diode emulation for enhanced light load efficiency
  • Programmable switching frequency from 600 kHz to 2 MHz
  • Monotonic start-up with four selectable soft-start times & enhanced pre-bias start-up
  • Thermally compensated internal over-current protection with four selectable settings
  • Enable input with voltage monitoring capability & Power Good output
  • Thermal shutdown
  • Operating temperature: -40°C < Tj < 125°C
  • Compact size for reduced PCB space requirements
  • Lead-free, halogen-free and RoHS2 compliant



  • Servers
  • Enterprise Storage
  • Netcom Router and Switches
  • Telecom Base Stations
  • Distributed PoL


Available tools


  • Evaluation board for IR3889M
  • Order Code:  EVAL38891VOUTTOBO1 


  • Evaluation board for IR3889M
  • Order Code: EVAL388933VOUTTOBO1

Infineon Technologies OptiMOS™ IPOL | EBV Elektronik

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