48V to 12V 120W Half-Bridge Power Supply Evaluation Board for Telecom Applications


The ISL6745ALEVAL3Z is a low cost, high performance LED driver with power factor correction (PFC) function that is compatible with widely used wall dimmers. It uses Renesas' ISL6745A voltage mode PWM controller to operate a SEPIC converter in discontinuous conduction mode (DCM).

The ISL6745A is a low-cost, double-ended voltage-mode PWM controller designed for half-bridge and full-bridge power supplies and line-regulated bus converters. It provides precise control of switching frequency, adjustable soft-start and overcurrent shutdown.

The evaluation board design gives high flexibility on both the input side and output load. With the same circuit configuration, it works well with and without a triac dimmer.

Key Features

  • Input VAC: 50V ~ 140V
  • Typical power factor PF: 0.98
  • Typical efficiency η: 80%
  • Output current ILED: 10mA ~ 670mA
  • Output voltage VOUT: 10V ~ 46V
  • Switching frequency FS: 100kHz
  • Output voltage ripple VRPP: 50mV(P-P)


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

ISL6745ALEVAL3Z White LED Driver Eval Board

ISL6745ALEVAL3Z White LED Driver Evaluation Board

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Tool Information

Tools Orderable Part Number (s) Production Status Manufacturer Suggested Single Tool Price
Description Distributor Stock Distributors Distributor Purchase Buy Direct
ISL6745EVAL1Z Mass Production Renesas $137.28 1 0 Call -

Note: Distributor Prices may vary from the stated budgetary price. The pricing and availability information on this site is based on information provided by Renesas’ authorized distributors and is subject to change without notice. By selecting a distributor from this page, you will be redirected from the Renesas site to the distributor’s website to complete a purchase. The distributors are independent from Renesas and maintain their own terms and conditions of sale. Renesas disclaims all representations and warranties, express and implied, with respect to transactions between distributors and their end customers.

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.