300kHz, Dual, 180° Out-of-Phase, Step-Down PWM and Single Linear Controller Evaluation Board


The ISL6443AEVAL2Z evaluation board highlights the operation of the ISL6443A 300kHz, dual, 180° out-of-phase, step-down pulse width modulating (PWM) and single linear controller in an embedded DC/DC converter application. The ISL6443A is a high performance triple-output controller offering control and protection features for two synchronous buck PWMs and one linear regulator.


  • Wide input supply voltage range: Variable 5.6V to 24V, fixed 4.5V to 5.6V
  • Three independently programmable output voltages
  • Switching frequency 300kHz
  • Out-of-phase PWM controller operation reduces required input capacitance and power supply induced loads
  • No external current sense resistor - Uses lower MOSFET's rDS(ON)
  • Bidirectional frequency synchronization for synchronizing multiple ISL6443A ICs
  • Programmable soft-start
  • Extensive circuit protection functions
    • PGOOD
    • UVLO
    • Overcurrent
    • Over-temperature
    • Independent shutdown for both PWMs
  • Excellent dynamic response - Voltage feed-forward with current mode control


  • Power supplies with multiple outputs
  • xDSL modems/routers
  • DSP, ASIC and FPGA power supplies
  • Set-top boxes
  • Dual output supplies for DSP, memory, logic, microprocessor (µP) core, and I/O
  • Telecom systems

ISL6443AEVAL2Z Step-Down PWM & Linear Controller Eval Board

ISL6443AEVAL2Z Evaluation 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.