ISL62391HIEVAL1Z & ISL62391LOEVAL1Z Eval Boards

High-Efficiency Triple-Output System Power Supply Controller for Notebook Computers

The ISL62391HIEVAL1Z and ISL62391LOEVAL1Z evaluation boards demonstrate the performance of the ISL62391 triple-output controller. The ISL62391 controller includes two pulse width modulation (PWM) controllers featured with Renesas' patented R3 technology, output adjustable from 0.6V to 5.5V, and a linear regulator (LDO3) that generates a fixed 3.3V output and can deliver up to 100mA.

The evaluation board includes two Enable switches, an LED Power-Good indicator and various test points. Each switching channel has an on-board dynamic load generator for evaluating the transient load response. There are two different evaluation boards which provide flexible evaluation options.


  • High performance R3 technology
  • Fast transient response
  • ±1% output voltage accuracy
  • Two fully programmable switch-mode power supplies
  • Programmable switching frequency
  • Fixed 3.3V LDO output
  • Internal soft-start and soft-stop output discharge
  • Wide input voltage range: +5.5V to +25V
  • Full and ultrasonic pulse-skipping mode
  • Power-Good indicator
  • Overvoltage, undervoltage and overcurrent protection
  • Thermal monitor and protection
  • Pb-Free (RoHS compliant)


  • Notebook and sub-notebook computers
  • PDAs and mobile communication devices
  • 3-cell and 4-cell Li+ battery powered devices

ISL62391xEVAL1Z Evaluation Board Layout

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