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NCP1622 - High-Efficiency Power Factor Controller

Description

The error amplifier output is available on this pin.

Features

  • necessary for robust and compact PFC stages, with few external components.

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Datasheet preview – NCP1622

Datasheet Details

Part number NCP1622
Manufacturer ON Semiconductor
File Size 423.01 KB
Description High-Efficiency Power Factor Controller
Datasheet download datasheet NCP1622 Datasheet
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Full PDF Text Transcription

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DATA SHEET www.onsemi.com Enhanced, High-Efficiency Power Factor Controller NCP1622 TSOP−6 SN SUFFIX 1 CASE 318G The 6−pin PFC controller NCP1622 is designed to drive PFC boost stages. It is based on an innovative Valley Synchronized Frequency Fold−back (VSFF) method. In this mode, the circuit classically operates in Critical conduction Mode (CrM) when Vcontrol voltage exceeds a programmable value Vctrl,FF. When Vcontrol is below this preset level Vctrl,FF, the NCP1622 (versions [B**] and [D**]) linearly decays the frequency down to about 30 kHz until Vcontrol reaches the SKIP mode threshold. VSFF maximizes the efficiency at both nominal and light load. In particular, the stand−by losses are reduced to a minimum.
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