The ISL6539EVAL2 evaluation board is used to evaluate the ISL6539 wide input range, dual pulse width modulation (PWM) controller with DDR option. The evaluation board supports testing with laboratory power supplies. Both regulated outputs can be exercised through external loads. There are posts available on the two regulated output rails for drawing a load and/or monitoring the voltages.

The ISL6539EVAL2 has two LEDs which indicate the status of the individual channel power-good (PGOOD) signals. There are also four scope probe points that allow for in-depth analysis. Four jumpers have also been provided for control and monitoring purposes.


  • Provides regulated output voltage in the range of 0.9V to 5.5V
  • Complete DDR memory power solution with VTT tracks VDDQ/2 and VDDQ/2 buffered reference output
  • Supports both DDR-I and DDR2 memory
  • Lossless rDS(ON) current sense sensing
  • Excellent dynamic response with voltage feed-forward and current mode control accommodating wide range LC filter selections
  • Dual mode operation - Operates directly from a 5.0V to 15V input or 3.3V/5V system rail
  • Undervoltage lock-out on VCC pin
  • Power-good, overcurrent, overvoltage, undervoltage protection for both channels
  • Synchronized 300kHz PWM operation in PWM mode


  • Single and dual channel DDR memory power systems
  • Graphics cards - GPU and memory supplies
  • Supplies for servers, motherboards, FPGAs
  • ASIC power supplies
  • Embedded processor and I/O supplies
  • DSP supplies


Title Type Date
Manual - Development Tools