NCP1605中文资料Power Factor Controller, Enhanced, High Voltage and Efficient Standby Mode数据手册ONSEMI规格书

描述 Description

The NCP1605 is a controller that exhibits near unity power factor while operating in fixed frequency, Discontinuous Conduction Mode or in Critical Conduction Mode.Housed in a SOIC16 package, the circuit incorporates all the features necessary for building robust and compact PFC stages, with a minimum of external components. In addition, it integrates the skip cycle capability to lower the standby losses to a minimum. The NCP1605A version lowers the UVLO ON threshold level to 10.5 V to allow operation with a lower Vcc.

特性 Features

High Voltage Startup Current Source
Clean & lossless start-up sequenceLess components
Fixed Frequency, Discontinous Conduction Mode (DCM) or Critical
The best of the 2 modes: DCM to limit the maximum switching frequency and CRM to lower maximum current stress
Soft-Skip during Standby Mode
Further reduced losses
PFC ready signal
Suitable for topologies requiring limited input voltage range
Fast Line / Load Transient Compensation
Valley Turn on
Output Under and Over Voltage Protection
Brown-Out Detection
Soft-Start for Smooth Start-up Operation
Over Current Limitation
Latched Off Capability

应用 Application

Power Factor Correction
High power AC AdaptersFlat TVsDesktop PCsIndustrial Power Supplies

简介

NCP1605属于集成电路（IC）的PFC（功率因数校正）。由制造生产的NCP1605PFC（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。