UCC28019 - 8 引脚持续传导模式 (CCM) PFC 控制器

UCC28019是TI德州仪器公司的一款功率因数校正产品，UCC28019是8 引脚持续传导模式 (CCM) PFC 控制器，本站介绍了UCC28019的封装应用图解、特点和优点、功能等，并给出了与UCC28019相关的TI元器件型号供参考。

UCC28019 - 8 引脚持续传导模式 (CCM) PFC 控制器 - 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

The UCC28019 8-pin active Power Factor Correction (PFC) controller uses the boost topology operating in Continuous Conduction Mode (CCM). The controller is suitable for systems in the 100 W to >2 kW range over a wide-range universal ac line input. Startup current during under-voltage lockout is less than 200 µA. The user can control low power standby mode by pulling the VSENSE pin below 0.77 V.

Low-distortion wave-shaping of the input current using average current mode control is achieved without input line sensing, reducing the Bill of Materials component count. Simple external networks allow for flexible compensation of the current and voltage control loops. The switching frequency is internally fixed and trimmed to better than 5% accuracy at 25°C. Fast 1.5-A gate peak current drives the external switch.

Numerous system-level protection features include peak current limit, soft over-current detection, open-loop detection, input brown-out detection, output over-voltage protection/under-voltage detection, a no-power discharge path on VCOMP, and overload protection on ICOMP. Soft-Start limits boost current during start-up. A trimmed internal reference provides accurate protection thresholds and regulation set-point. An internal clamp limits the gate drive voltage to 12.5 V.

产品特性

8-pin Solution Without Sensing Line Voltage Reduces External Components
Wide-Range Universal AC Input Voltage
Fixed 65-kHz Operating Frequency
Maximum Duty Cycle of 97%
Output Over/Under-Voltage Protection
Input Brown-Out Protection
Cycle-by-Cycle Peak Current Limiting
Open Loop Detection
Low-Power User Controlled Standby Mode
APPLICATIONS
- CCM Boost Power Factor Correction Power Converters in the 100 W to >2 kW Range
- Server and Desktop Power Supplies
- Telecom Rectifiers
- Industrial Electronics
- Home Electronics

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