芯片选型求推荐

85~264宽AC输入，385Vdc输出，600-1000w（待定）， 满足这样条件的PFC芯片求推荐

谢谢！

可以考虑UCC28019，谢谢

UCC28180:

• Wide Range Programmable Switching Frequency (18KHz to 250KHz)
• Enhanced Dynamic Response Circuit
• Reduced Current Sense Thresholds
• Audible Noise Minimization Circuitry
• Burst Mode for No Load Regulation

UCC28019

8 引脚持续传导模式 (CCM) PFC 控制器

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.

具体参选信息，可以点击下面的网址http://www.ti.com.cn/product/cn/UCC28019

可以试试UCC28070，交错CCM模式的，效率高，散热好，功率再大点也不是问题

UCC28019

该芯片采用平均电流模式对功率因数进行校正，适用于宽范围通用交流输入，输出为100W至2kW的功率因数变换器。该芯片开关频率固定(65kHz)，具有峰值电流限制、软过流保护、开环检测、输入掉电保护、输出过压／欠压保护等众多系统保护功能。

UCC28019。传统的AC／DC变换采用二极管全桥整流，输出端直接接大容量电容滤波器，造成交流电源输入电流中含有大量谐波。谐波电流对电网有严重的危害，不仅会使电网电压发生畸变，也会浪费大量的电能。随着电源绿色化概念的提出，功率因数校正得到了广泛应用。所谓功率因数校正，就是指从电路上采取措施，使交流电源输入电流实现正弦，并与输入电压保持同相。UCC28019采用平均电流模式对功率因数进行校正，使输入电流的跟踪误差产生的畸变小于1％，实现了接近于l的功率因数。

UCC28019、UCC28180、UCC28070、UCC28050、UCC28061、UCC28063等等一些都可以看看的。http://www.ti.com.cn/sitesearch/cn/docs/universalsearch.tsp?searchTerm=UCC28#linkId=2

也可以考虑交联的UCC28060, UCC28070等

建议使用UCC28019 这个可以达到要求的，我以前用过。。

宽电压，而且功率比较大，可以考虑采用多相交错CCM模式PFC。

二相交错可以考虑这几个：