ISL6740

Flexible Double Ended Voltage and Current Mode PWM Controllers

Product Status: Mass Production

OVERVIEW

ISL6740, ISL6741 Flexible Double-Ended Voltage and Current Mode PWM Controllers The ISL6740, ISL6741 family of adjustable frequency, low power, Pulse Width Modulating (PWM) voltage mode (ISL6740) and current mode (ISL6741) controllers, is designed for a wide range of power conversion applications using half-bridge, full bridge and push-pull configurations. These controllers provide an extremely flexible oscillator that allows precise control of frequency, duty cycle and dead time.

This advanced BiCMOS design features low operating current, adjustable switching frequency up to 1MHz, adjustable soft-start, internal and external over-temperature protection, fault annunciation, and a bidirectional SYNC signal that allows the oscillator to be locked to paralleled units or to an external clock for noise sensitive applications.

KEY FEATURES

  • Precision duty cycle and dead time control
  • 95μA start-up current
  • Adjustable delayed overcurrent shutdown and restart (ISL6740)
  • Adjustable short-circuit shutdown and restart
  • Adjustable oscillator frequency up to 2MHz
  • Bidirectional synchronization
  • Inhibit signal
  • Internal over-temperature protection
  • System over-temperature protection using a thermistor or sensor
  • Adjustable soft-start
  • Adjustable input undervoltage lockout
  • Fault signal
  • Tight tolerance voltage reference over line, load and temperature
  • Pb-free (RoHS compliant)

PARAMETRICS

Parameters
ISL6740
Basic Information
生产状态
Mass Production
拓扑
Double-Ended
拓扑特征
Half-Bridge or Full Bridge (Telecom) Hard SW
控制模式
Voltage Mode
UVLO上升 (V)
7.25
UVLO下降 (V)
6.75
VBIAS (最大值) (V)
20
无负载工作电流
5 mA
PWM输出数量
2
FET驱动器输出电流最大值
50 mA
最大占空比 (%)
100
资质级别
Standard
温度范围
-40 to +85

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