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Renesas ISL6726

Active Clamp Forward PWM Controller

Details

TopologieEintaktflusswandler
Eingangsspannung18-36 V
Ausgang 112 V / 7.5 A

Beschreibung

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 precisionoscillator 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.

Eigenschaften

  • 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 forInterleaved Converter Applications
  • Adjustable Soft-Start and Selectable Soft-Stop
  • Selectable Minimum Duty Cycle Clamp for SynchronousRectifier Applications
  • Programmable Slope Compensation
  • Supports N- and P-Channel Active Clamp FETs
  • Programmable Switch Timing Between Main and Active ClampOutputs
  • 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)

Typische Anwendungen

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

Weiterführende Informationen

Artikeldaten