NCP1632数据手册集成电路（IC）的PFC（功率因数校正）规格书PDF

描述 Description

The NCP1632 integrated a dual MOSFET driver for interleaved PFC applications. Interleaving consists of paralleling two small stages in lieu of a bigger one, more difficult to design. This approach has several merits like the ease of implementation, the use of smaller components or a better distribution of the heating.
Also, Interleaving extends the power range of Critical Conduction Mode that is an efficient and cost-effective technique (no need for low trr diodes). In addition, the NCP1632 drivers are 180o phase shifted for a significantly reduced current ripple. Housed in a SOIC16 package, the circuit incorporates all the features necessary for building robust and compact interleaved PFC stages, with a minimum of external components.

特性 Features

• 180° out of phase operation
• Low EMI and reduces RMS current in the bulk capacitor
• Frequency Clamped Critical conduction Mode (FCCrM) operation
• Optimize efficiency over the load range
• Frequency foldback at low power
• Improve light load efficiency
• Integrated Overcurrent protection, Overvoltage protection, UVLO and brown-out protection
• Increase system reliability

应用 Application

• All Off Line Appliance Requiring Power Factor Correction
• SMPS
• Flat panel TVs
• Computer Power Supplies
• LCD TV
• Server power, networking power

简介

NCP1632属于集成电路（IC）的PFC（功率因数校正）。由制造生产的NCP1632PFC（功率因数校正）功率因数校正 (PFC) 是用于调整交流电路中的电压和电流之间的相位角，使之趋近于零的半导体器件。不同模式包括平均电流、边界导通、连续导通、临界导通、电流控制式频率折返、不连续和不连续导通，开关频率从 6 kHz 至 1.7 MHz 可调。