The ISL6745EVAL2Z evaluation board is a reference design for powering high brightness white LEDs.

The ISL6745UEVAL2Z utilizes Renesas' ISL6745A, a double-ended voltage mode PWM controller, for a SEPIC converter application requiring a constant output current. It consists of separate assemblies for the driver and for the LED board, which supports as many as 21 high brightness LEDs. The LED driver board converts a universal (85V to 275VAC) AC input to a DC output rated at 300mA. The design can be further optimized for applications that do not require universal AC input. ISL6745LEVAL2Z is for 80V to 140V applications.


  • Universal AC Input
  • Dimmable LED Brightness
  • High Power Factor
  • Overvoltage Protection
  • Overcurrent Protection
  • Transformerless


  • Half-bridge converters
  • Full-bridge converters
  • Line-regulated bus converters
  • AC/DC power supplies
  • Telecom, datacom, and file server power

Documentation & Downloads

Title Other Languages Type Format File Size Date
Datasheets & Errata
ISL6745A Datasheet Datasheet PDF 632 KB
User Guides & Manuals
ISL6745ALEVAL3Z User Guide Manual PDF 1.81 MB
ISL6745EVAL2Z User Guide Manual PDF 1.92 MB
ISL6745AxEVAL5Z User Guide Manual PDF 985 KB
Application Notes & White Papers
AN1387: White LED Driver Circuits for Off-Line Applications using Standard PWM Controllers Application Note PDF 746 KB
AN1681: Grounding Techniques Application Note PDF 509 KB
AN1684: Nonideality of Ground Application Note PDF 397 KB
ISL6752DBEVAL1Z, ISL6754DBEVAL1Z Design Files Design File ZIP 2.45 MB
ISL6742BEVAL3Z Design Files Design File ZIP 448 KB