The ISL6726 is a highly featured single-ended PWM controller intended for applications using the active clamp forward converter topology in either n- or p-channel active clamp configurations, the asymmetric half-bridge topology, and the standard forward topologies with synchronous rectification. It is a current-mode PWM controller with many features designed to simplify its use. Among its many features are a precision oscillator which allows accurate control of the deadtime and maximum duty cycle, bi-directional synchronization with 180° phase shift for interleaving applications, adjustable soft-start and soft-stop, a low power disable mode, and average current limit for brick-wall overcurrent protection. This advanced BiCMOS design features low start-up and operating currents, adjustable switching frequency to greater than 1MHz, high current FET drivers, and very low propagation delays for a fast response to overcurrent faults.

Features

  • Precision Maximum Duty Cycle and Deadtime Control
  • 125µA Typical Start-up Current
  • Adjustable Peak and Average Current Limit Protection
  • Programmable Oscillator Frequency
  • Bi-Directional Synchronization with 180° Phase Shift for Interleaved Converter Applications
  • Adjustable Soft-Start and Selectable Soft-Stop
  • Selectable Minimum Duty Cycle Clamp for Synchronous Rectifier Applications
  • Programmable Slope Compensation
  • Supports N- and P-Channel Active Clamp FETs
  • Programmable Switch Timing Between Main and Active Clamp Outputs
  • Programmable Undervoltage Lock-Out (UV)
  • Input Voltage Dependent Duty Cycle Clamp
  • ENABLE Input with Low Power Disable
  • Internal Over-Temperature Protection
  • Pb-Free (RoHS Compliant)

Applications

  • Telecom and Datacom Power Supplies
  • AC/DC Power Supplies
  • Battery Chargers

Product Options

Part Number Part Status Pkg. Type Carrier Type MOQ Buy Sample
Active QSOP Tube 580
Availability
Active QSOP Reel 2500
Availability
Active QSOP Reel 250
Availability

Documentation

Title language Type Format File Size Date
Datasheets & Errata
ISL6726 Datasheet Datasheet PDF 1.17 MB
Application Notes & White Papers
AN1681: Grounding Techniques Application Note PDF 509 KB
AN1684: Nonideality of Ground Application Note PDF 397 KB
PCNs & PDNs
PCN13037 - Alternate Bond Wire Material for Assembly of the Listed Intersil QSOP Packaged Product Product Change Notice PDF 268 KB
Other
Motor Solution Brochure 日本語, 简体中文 Brochure PDF 4.54 MB
ISL6726 iSim:PE Model Schematic SXSCH 357 KB

Boards & Kits

Part Number Title Type Company
ISL6726EVAL1Z Current Mode Active Clamp Forward Evaluation Board Evaluation Renesas
ISL6726EVAL2Z 24V to 12V 90W Active Clamp Forward DC/DC Converter Evaluation Board Evaluation Renesas