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Renesas ISL6745

Voltage-Mode Double-Ended PWM Controller with Precision Dead-Time Adjustment


Eingangsspannung90-264 V
Schaltfrequenz2000 kHz
Ausgang 10.32 A


The ISL6745 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 ISL6745 allows for accurate adjustment of MOSFET nonoverlap time ("deadtime") with deadtimes as low as 35ns, allowing power engineers to optimize the efficiency of openloop bus converters. The ISL6745 also includes a control voltage input for closed-loop PWM and line voltage feedforward functions.

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 ISL6745 is available in a space-saving MSOP-10 package and is guaranteed to meet rated specifications over a wide -40°C to 105°C temperature range.


  • Precision Duty Cycle and Deadtime Control
  • 100µA Start-up Current
  • Adjustable Delayed Overcurrent Shutdown and Re-Start
  • 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 Available (RoHS Compliant)

Typische Anwendungen

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

Weiterführende Informationen


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