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


The ISL8115DEMO1Z is a compact reference design synchronous buck converter (28.19mm x 16.89mm) for implementing Intersil’s wide input range PWM controller, the ISL8115. 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.

Key Features

  • 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 supply for datacom/telecom and 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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