Enhanced, High-Efficiency Power Factor Controller

Features • Valley Synchronized Frequency Fold−back (VSFF): ♦ CrM at Heavy Load ♦ DCM at Light Load by Dead Time Control ♦ Valley Switching in Both CrM and DCM • On−time Modulation for High PFC in Both CrM and DCM • Follower Boost Capability (NCP1623A Only) ♦ Lowered Output Voltage Regulatio

文件：331.85 Kbytes 页数：20 Pages

ONSEMI

安森美半导体

临界导通模式（CrM）功率因数矫正控制器，升压跟随器

The NCP1623 is a controller designed to drive PFC boost stages. Based on an innovative Valley Synchronized Frequency Fold-back (VSFF) method, it operates in critical conduction mode (CrM) until the power drops below a threshold level. The PFC controller enters discontinuous conduction mode (DCM) wit • Critical Conduction Mode (CrM) in heavy load conditions\n• Maximizes the efficiency at both nominal and light loads\n• Discontinuous Conduction Mode (DCM) with Frequency Foldback in light load\n• Maximizes the efficiency at both nominal and light loads\n• Follower Boost capability (NCP1623A only)\;

ONSEMI

安森美半导体

丝印：1623A；Package：SOIC-8；Enhanced, High-Efficiency Power Factor Controller

Features • Valley Synchronized Frequency Fold−back (VSFF): ♦ CrM at Heavy Load ♦ DCM at Light Load by Dead Time Control ♦ Valley Switching in Both CrM and DCM • On−time Modulation for High PFC in Both CrM and DCM • Follower Boost Capability (NCP1623A Only) ♦ Lowered Output Voltage Regulatio

文件：331.85 Kbytes 页数：20 Pages

ONSEMI

安森美半导体

丝印：UPD；Package：TSOP-6；Enhanced, High-Efficiency Power Factor Controller

Features • Valley Synchronized Frequency Fold−back (VSFF): ♦ CrM at Heavy Load ♦ DCM at Light Load by Dead Time Control ♦ Valley Switching in Both CrM and DCM • On−time Modulation for High PFC in Both CrM and DCM • Follower Boost Capability (NCP1623A Only) ♦ Lowered Output Voltage Regulatio

文件：331.85 Kbytes 页数：20 Pages

ONSEMI

安森美半导体

丝印：1623C；Package：SOIC-8；Enhanced, High-Efficiency Power Factor Controller

Features • Valley Synchronized Frequency Fold−back (VSFF): ♦ CrM at Heavy Load ♦ DCM at Light Load by Dead Time Control ♦ Valley Switching in Both CrM and DCM • On−time Modulation for High PFC in Both CrM and DCM • Follower Boost Capability (NCP1623A Only) ♦ Lowered Output Voltage Regulatio

文件：331.85 Kbytes 页数：20 Pages

ONSEMI

安森美半导体

Package：SOT-23-6 细型，TSOT-23-6；包装：卷带（TR）剪切带（CT）Digi-Reel® 得捷定制卷带 类别：集成电路（IC） PFC（功率因数校正） 描述：ENHANCED HIGH EFFICIENCY POWER F

ONSEMI

安森美半导体