ISL6308AEVAL1Z Evaluation Board

Three-Phase Buck PWM Controller with High Current Integrated MOSFET Drivers Evaluation Board


The ISL6308AEVAL1Z board evaluates the ISL6308A and embodies a 85A to 90A regulator solution targeted at supplying power to the designated load. The physical board design is optimized for 3 phase operation and ships out configured to provide one of the following four output voltages (0.6V, 0.9V, 1.2V and 1.5V) depending on choice of the REF1, REF0 combination set by DIP switch U2, but can be easily modified to provide any output voltage values in the range of 0.6V to 2.3V by means of resistor divider composed of R90 and R81.

The evaluation kit consists of the ISL6308AEVAL1Z evaluation board, the ISL6308A datasheet, and this application note. The evaluation board is optimized for 3-phase operation without droop, the nominal output voltage is 1.5V (with DIP switch U2 set to 11 position) and the maximum output current is 90A

Key Features

  • DIP switch for DAC (REF) voltage selection from four possible values (0.6V, 0.9V, 1.2V and 1.5V)
  • Footprint for a resistor divider for output voltage adjustment up to 2.3V
  • On-board transient load generator to facilitate the evaluation process
  • On-board LED is present to indicate the status of the PGOOD signal
  • Configured for down conversion from 5V to 12V to the REF setting


  • High Current DDR/Chipset Core Voltage Regulators
  • High Current, Low Voltage DC/DC Converters
  • High Current, Low Voltage FPGA/ASIC DC/DC Converters

ISLUSPLUS-UC1DEMO1Z Power Supply Reference Solution

ISL6308AEVAL1Z 3-Phase Buck PWM Controller Eval Board

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