High Voltage Synchronous Buck PWM Controller with Integrated Gate Driver Demonstration Board


The ISL8115DEMO1Z is a compact reference design synchronous buck converter (28.19mm x 16.89mm) for implementing Renesas' ISL8115 wide input range PWM controller. Utilizing voltage mode control with input feed-forward, the ISL8115DEMO1Z maintains a constant loop gain for optimal transient response, especially for applications with a wide input voltage range.


  • Small, compact design
  • Fast transient response
    • Voltage-mode PWM leading-edge modulation with nonlinear control
    • Input voltage feed-forward
  • Integrated 5V high-speed 4A MOSFET gate drivers
    • Internal bootstrap diode
  • Oscillator programmable from 150kHz to 1.5MHz
    • Frequency synchronization to external clock signal
  • Diode emulation mode for light load efficiency improvement
  • Output OVP/UVP; OCP and OTP
  • Adjustable soft-start
  • Prebias start-up function
  • Excellent output voltage regulation
    • 0.6V ±1.0% internal reference (-40 °C ~ +125 °C)
    • 0.6V ±0.7% internal reference (-40 °C ~ +105 °C)
    • Differential voltage sensing


  • Power supplies for datacom/telecom and point-of-load (POL)
  • Wide input voltage range buck regulators
  • High current density power supplies RF power amplifier bias compensation

ISL8115DEMO1Z Demonstration Board

ISL8115DEMO1Z Demonstration 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.