UCC2818-EP - UCC2718-EP, UCC2818-EP

UCC2818-EP是TI德州仪器公司的一款功率因数校正产品，UCC2818-EP是UCC2718-EP, UCC2818-EP，本站介绍了UCC2818-EP的封装应用图解、特点和优点、功能等，并给出了与UCC2818-EP相关的TI元器件型号供参考。

UCC2818-EP - UCC2718-EP, UCC2818-EP - 功率因数校正 - 离线隔离型DC/DC控制器和转换器 - 德州仪器

产品描述

产品特性

Controls Boost Preregulator to Near-Unity Power Factor
Limits Line Distortion
World-Wide Line Operation
Overvoltage Protection
Accurate Power Limiting
Average Current Mode Control
Improved Noise Immunity
Improved Feed-Forward Line Regulation
Leading Edge Modulation
150-µA Typical Start-Up Current
Low-Power BiCMOS Operation
12-V to 17-V Operation
SUPPORTS DEFENSE, AEROSPACE, AND MEDICAL APPLICATIONS
- Controlled Baseline
- One Assembly/Test Site
- One Fabrication Site
- Available in Military (–55°C/125°C) Temperature Range(1)
- Extended Product Life Cycle
- Extended Product-Change Notification
- Product Traceability

(1) Additional temperature ranges are available - contact factory Unitrode Is a trademark of Texas Instruments.

DESCRIPTION/ORDERING INFORMATION

The UCC2817 and UCC2818 provides all the functions necessary for active power-factor-corrected preregulators. The controller achieves near-unity power factor by shaping the ac-input line current waveform to correspond to that of the ac input line voltage. Average current mode control maintains stable, low-distortion sinusoidal line current.

Designed with TI’s BiCMOS process, the UCC2817 and UCC2818 offers new features, such as lower start-up current, lower power dissipation, overvoltage protection, a shunt UVLO detect circuitry, a leading-edge modulation technique to reduce ripple current in the bulk capacitor, and an improved, low-offset (±2-mV) current amplifier to reduce distortion at light load conditions.

The UCC2817 offers an on-chip shunt regulator with low start-up current suitable for applications utilizing a bootstrap supply. The UCC2818 is intended for applications with a fixed supply (VCC).

The devices are available in a 16-pin D package.

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