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. In addition, the ISL6745A allows for accurate adjustment of MOSFET non-overlap time (dead time) with dead times as low as 35ns, allowing power engineers to optimize the efficiency of open-loop bus converters. The ISL6745A also includes a control voltage input for closed-loop PWM and line voltage feed-forward functions. The ISL6745A is identical to the ISL6745, but is optimized for higher noise environments. Low start-up and operating currents allow for easy biasing in both AC/DC and DC/DC applications. This advanced BiCMOS design also features adjustable switching frequency up to 1MHz, 1A FET drivers, and very low propagation delays for a fast response to overcurrent faults. The ISL6745A is available in a space-saving 10 Ld MSOP package and is assured to meet rated specifications across a wide -40°C to +105°C temperature range.

Features

  • Precision duty cycle and deadtime control
  • 100µA start-up current
  • Adjustable delayed overcurrent shutdown and restart
  • Adjustable oscillator frequency up to 2MHz
  • 1A MOSFET gate drivers
  • Adjustable soft-start
  • Internal over-temperature protection
  • 35ns control to output propagation delay
  • Small size and minimal external component count
  • Input undervoltage protection
  • Pb-free (RoHS compliant)

Applications

  • Half-bridge Converters
  • Full-bridge Converters
  • Line-regulated Bus Converters
  • AC/DC Power Supplies
  • Telecom, Datacom, and File Server Power

Product Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active MSOP Tube 980
Availability
Active MSOP Reel 2500
Availability

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
PCNs & PDNs
PCN15046 - Wafer Fabrication Site Change for Listed Intersil Products - Global Foundry P6 Process transfer to Palm Bay - Phase II Product Change Notice PDF 398 KB

Boards & Kits

Part Number Title Type Company
ISL6745ALEVAL3Z TRIAC Dimmer Compatible High Brightness White LED Driver Evaluation Board Evaluation Renesas
ISL6745EVAL1Z 48V to 12V 120W Half-Bridge Power Supply Evaluation Board Evaluation Renesas
ISL6745LEVAL2Z Offline High Brightness White LED Driver Evaluation Board Evaluation Renesas
ISL6745UEVAL2Z Offline High Brightness White LED Driver Evaluation Board Evaluation Renesas