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UCC2897A - 产品图解：
UCC2897A-高级电流模式有源钳位 PWM 控制器
UCC2897A-PWM与谐振控制器-离线隔离型DC/DC控制器和转换器-电源管理
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TI产品 - UCC2897A介绍

UCC2897A - 高级电流模式有源钳位 PWM 控制器

UCC2897A是TI德州仪器公司的一款PWM与谐振控制器产品，UCC2897A是高级电流模式有源钳位 PWM 控制器，本站介绍了UCC2897A的封装应用图解、特点和优点、功能等，并给出了与UCC2897A相关的TI元器件型号供参考。

UCC2897A - 高级电流模式有源钳位 PWM 控制器 - 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

产品特性
  • Low-Output Jitter
  • Soft-Stop Shutdown of MAIN and AUX
  • 110-V Input Startup Function
  • Ideal for Active-Clamp, Reset-Forward, Flyback and Synchronous Rectifier Uses
  • Provides Complementary Auxiliary Driver with Programmable Dead Time (Turn-On Delay) between AUX and MAIN Switches
  • Peak Current-Mode Control with 0.5-V Cycle-by-Cycle Current Limiting
  • TrueDrive™ 2-A Sink, 2-A Source Outputs
  • Trimmed Internal-Bandgap Reference for Accurate Line UV and Line OV Threshold
  • Programmable Slope Compensation
  • High-Performance 1-MHz Synchronizable Oscillator with Internal Timing Capacitor
  • Precise Programmable Maximum Duty Cycle
  • PB-Free Lead Finish Package
产品应用
  • High-Efficiency DC-to-DC Power Supplies
  • Server Power, 48-V Telecom, Datacom, and 42-V Automotive Applications
产品说明

The UCC2897A PWM controller simplifies implementation of the various active clamp or reset and synchronous rectifier switching power topologies.

The UCC2897A is a peak current-mode fixed-frequency high-performance pulse-width modulator. The controller includes the logic and the drive capability for the P-channel auxiliary switch along with a simple method of programming the critical delays for proper active-clamp operation.

Features include an internal programmable slope compensation circuit, precise DMAX limit, and a synchronizable oscillator with an internal-timing capacitor. An accurate line-monitoring function also programs the ON and OFF transitions of the converter with regard to the bulk input voltage, VIN.

The UCC2897A adds a second-level hiccup-mode current-sense threshold, bi-directional synchronization and input-overvoltage protection functionalities. The UCC2897A is offered in 20-pin TSSOP (PW) and 20-pin QFN (RGP) packages.

产品器件信息
PART NUMBERPACKAGEBODY SIZE (NOM)
UCC2897ATSSOP (20)6.60 mm x 6.60 mm
VQFN (20)4.15 mm x 4.15 mm
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