+5V or +12V Single-Phase Synchronous Buck Converter PWM Controller Evaluation Boards


The ISL8105BEVAL1Z (8 Ld SOIC), ISL8105BEVAL2Z (10 Ld DFN) evaluation boards highlight the operation of the ISL8105B controller in a DC/DC application. The ISL8105B is a simple single-phase PWM controller for a synchronous buck converter that operates from +5V or +12V bias supply voltage. With integrated linear regulator, boot diode, and gate drivers, the ISL8105B reduces external component count and board space requirements.

Key Features

  • Operates from +5V or +12V Bias Supply Voltage
  • 0.6V Internal Reference Voltage
  • Integrated MOSFET Gate Drivers that Operate from VBIAS (+5V to +12V)
  • Simple Voltage-Mode PWM Control
  • Fast Transient Response
  • Fixed 300kHz Operating Frequency
  • Fixed Internal Soft-Start with Pre-biased Load Capability
  • Lossless, Programmable Overcurrent Protection
  • Enable/Disable Function Using COMP/EN Pin
  • Output Current Sourcing and Sinking Currents


  • 5V or 12V DC/DC Regulators
  • Industrial Power Systems
  • Telecom and Datacom Applications
  • Test and Measurement Instruments
  • Distributed DC/DC Power Architecture
  • Point of Load Modules

ISL8105BEVAL1Z Buck Converter PWM Controller Eval Board

ISL8105BEVAL1Z Buck Converter PWM Controller Eval Board

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Disclaimer: THIS MATERIAL IS PROVIDED “AS-IS” FOR EVALUATION PURPOSES ONLY. RENESAS ELECTRONICS CORPORATION AND ITS SUBSIDIARIES (collectively, “Renesas”) DISCLAIM ALL WARRANTIES, INCLUDING WITHOUT LIMITATION, FITNESS FOR A PARTICULAR PURPOSE AND MERCHANTABILITY. Renesas provides evaluation platforms and design proposals to help our customers to develop products. However, factors beyond Renesas' control, including without limitation, component variations, temperature changes and PCB layout, could significantly affect the product performance. It is the user’s responsibility to verify the actual circuit performance.