UCC35705 - 高速电压模式脉宽调制器

UCC35705是TI德州仪器公司的一款PWM与谐振控制器产品，UCC35705是高速电压模式脉宽调制器，本站介绍了UCC35705的封装应用图解、特点和优点、功能等，并给出了与UCC35705相关的TI元器件型号供参考。

UCC35705 - 高速电压模式脉宽调制器 - 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 UCC35705 and UCC35706 devices are 8-pin voltage mode primary side controllers with fast over-current protection. These devices are used as core high-speed building blocks in high performance isolated and non-isolated power converters.

UCC35705/UCC35706 devices feature a high speed oscillator with integrated feed-forward compensation for improved converter performance. A typical current sense to output delay time of 25 ns provides fast response to overload conditions. The IC also provides an accurate programmable maximum duty cycle clamp for increased protection which can also be disabled for the oscillator to run at maximum possible duty cycle.

Two UVLO options are offered. The UCC35705 with lower turn-on voltage is intended for dc-to-dc converters while the higher turn-on voltage and the wider UVLO range of the UCC35706 is better suited for offline applications.

The UCC35705/UCC35706 family is offered in 8-pin MSOP (DGK), SOIC (D) and PDIP (P) packages.

产品特性

Greater Than 4-MHz Operation
Integrated Oscillator / Voltage Feed Forward Compensation
>4:1 Input Voltage Range
25-ns Current Limit Delay
Programmable Maximum Duty Cycle Clamp
Optocoupler Interface
50-µA Start-Up Current
4.2-mA Operating Current @ 1 MHz
Smallest Footprint of the 8-pin MSOP Package Minimizes Board Area and Height

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