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UCC3810-双通道同步电流模式 PWM
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TI产品 - UCC3810介绍

UCC3810 - 双通道同步电流模式 PWM

UCC3810是TI德州仪器公司的一款PWM与谐振控制器产品，UCC3810是双通道同步电流模式 PWM，本站介绍了UCC3810的封装应用图解、特点和优点、功能等，并给出了与UCC3810相关的TI元器件型号供参考。

UCC3810 - 双通道同步电流模式 PWM - PWM与谐振控制器 - 离线隔离型DC/DC控制器和转换器 - 德州仪器

产品描述

The UCC3810 is a high-speed BiCMOS controller integrating two synchronized pulse width modulators for use in off-line and dc-to-dc power supplies. The UCC3810 family provides perfect synchronization between two PWMs by usin g the same oscillator. The oscillator’s sawtooth waveform can be used for slope compensation if required.

Using a toggle flip-flop to alternate between modulators, the UCC3810 ensures that one PWM does not slave, interfere, or otherwise affect the other PWM. This toggle flip- flop also ensures that each PWM is limited to 50% maximum duty cycle, insuring adequate off-time to reset magnetic elements. This device contains many of the same elements of the UC3842 current mode controller family, combined with the enhancements of the UCC3802. This minimizes power supply parts count. Enhancements include leading edge blanking of the current sense signals, full cycle fault restart, CMOS output drivers, and outputs which remain low even when the supply voltage is removed.

产品特性

  • Single Oscillator Synchronizes Two PWMs
  • 150-µA Startup Supply Current
  • 2-mA Operating Supply Current
  • Operation to 1 MHz
  • Internal Soft-Start
  • Full-Cycle Fault Restart
  • Internal Leading-Edge Blanking of theCurrent Sense Signal
  • 1-A Totem Pole Outputs
  • 75-ns Typical Response from Current Sense to Output
  • 1.5% Tolerance Voltage Reference

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