Synchronous Buck PWM Controller Evaluation Board


The ISL8104EVAL1Z evaluation board highlights the operations of the ISL8104 controller in a DC/DC application. The ISL8104 is a simple single-phase pulse width modulator (PWM) controller for a synchronous buck converter with integrated MOSFET driver that operates from +8V to +14.4V bias supply voltage. The ISL8104 employs voltage-mode control with dual-edge modulation to achieve fast transient response. The controller features the ability to safely start-up into pre-biased output loads and provides protection against overcurrent fault events. Overcurrent protection is implemented using top-side MOSFET rDS(ON) sensing, eliminating the need for a current sensing resistor.


  • +8V ±5% to +14V ±10% bias voltage range
    • 1.5V to 15.4V input voltage range
  • 0.597V internal reference voltage
    • ±1.0% over the commercial temperature range
    • ±1.5% over the industrial temperature range
  • Voltage-mode PWM control with dual-edge modulation
  • 14V high-speed N-channel MOSFET gate drivers
    • 2.0A source/3A sink at 14V bottom-side gate drive
    • 1.25A source/2A sink at 14V top-side gate drive
  • Fast transient response
    • 15MHz (typ.) gain-bandwidth error amplifier with 6V/µs slew rate
    • Full 0% to 100% duty cycle support
  • Programmable operating frequency from 50kHz to 1.5MHz
  • Lossless programmable overcurrent protection
    • Top-side MOSFET's rDS(ON) sensing
    • ~120ns blanking time
  • Sourcing and sinking current capability
  • Support for start-up into pre-biased loads


  • Test and measurement instruments
  • Distributed DC/DC power architecture
  • Industrial applications
  • Telecom/Datacom applications

ISL8104EVAL1Z PWM Controller Eval Board

ISL8104EVAL1Z PWM Controller Evaluation Board




Tools Orderable Part Number (s) Production Status Manufacturer Suggested Single Tool Price
Description Distributor Stock Distributors Distributor Purchase Buy Direct
ISL8104EVAL2Z Mass Production Renesas $75.00 1 0 Call -
ISL8104EVAL1Z Mass Production Renesas $55.00 1 0 Call -

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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.