ISL6726

Active Clamp Forward PWM Controller

Product Status: Mass Production

OVERVIEW

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.

KEY 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)

BLOCK DIAGRAM

 Block Diagram

PARAMETRICS

Parameters
ISL6726
Basic Information
生产状态
Mass Production
iSim模型
YES
拓扑
Single-Ended
拓扑特征
Active clamp forward
控制模式
Active clamp forward, Asymmetric half-bridge, Interleaved active clamp forward
UVLO上升 (V)
7.65
UVLO下降 (V)
6.23
VBIAS (最大值) (V)
20
无负载工作电流
10 mA
PWM输出数量
1
FET驱动器输出电流最大值
1 A
最大占空比 (%)
100
资质级别
Standard
CAN 采样
YES
温度范围
-40 to +105

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