NCP1910数据手册集成电路（IC）的PFC（功率因数校正）规格书PDF

描述 Description

Housed in a SO-24WB package, the NCP1910 combines a state-of-the-art circuitry aimed to powering next generation of ATX or flat TVs converters. With a 65 kHz Continuous Conduction Mode Power Factor Controller and a LLC controller hosting a high-voltage driver, the NCP1910 is ready to power 85+ types of offline power supplies. To satisfy stringent efficiency considerations, the PFC circuit implements an adjustable frequency fold back to reduce switching losses as the load is going light. To cope with all the signal sequencing required by the ATX and flat TVs specifications, the controller includes several dedicated pins enabling handshake between the secondary and the primary sides. These signals include a power-good line but also a control pin which turns the controller on and off via an opto coupler. Safety-wise, a second OVP input offers the necessary redundancy in case the main feedback network would drift away. Finally, a fast fault input immediately reacts in presence of an over current condition by triggering an auto-recovery soft-start sequence.

特性 Features

• PFC frequency fold back
• Improves light load efficiency
• LLC Skip
• Improves light load efficiency
• Dynamic Response enhancers
• Reduces bulk undershoot
• Adjustable Line Brown-Out Protection
• Rugged Design, Reduce surrounding part count
• On/off and power Good Management Signam
• Reduce Surrounding Part Count
• Redundant Vbulk Over Voltage Protection
• Robust Protection

应用 Application

• Flat panel display powr converters
• High power ac-dc adpaters for notebooks
• Computing power supplies
• ATX or Server power supplies
• LCD or Plasma TVs

简介

NCP1910属于集成电路（IC）的PFC（功率因数校正）。由制造生产的NCP1910PFC（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。