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NCP1612B2 - High-Efficiency Power Factor Controller

Download the NCP1612B2 datasheet PDF (NCP1612A included). The manufacturer datasheet provides complete specifications, pinout details, electrical characteristics, and typical applications for high-efficiency power factor controller.

Features

  • necessary for robust and compact PFC stages, with few external components. General Features.
  • Near-unity Power Factor.
  • Critical Conduction Mode (CrM).
  • Current Controlled Frequency Fold-back (CCFF): Low Frequency Operation is Forced at Low Current Levels.
  • On-time Modulation to Maintain a Proper Current Shaping in CCFF Mode.
  • Skip Mode Near the Line Zero Crossing.
  • Fast Line/Load Transient Compensation (Dynamic Response Enhancer).
  • Valley.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (NCP1612A-ONSemiconductor.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number NCP1612B2
Manufacturer onsemi
File Size 1.46 MB
Description High-Efficiency Power Factor Controller
Datasheet download datasheet NCP1612B2 Datasheet

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Full PDF Text Transcription

Click to expand full text
DATA SHEET www.onsemi.com Enhanced, High‐Efficiency Power Factor Controller NCP1612A, NCP1612B, NCP1612A1, NCP1612A2, NCP1612A3, NCP1612B2 The NCP1612 is designed to drive PFC boost stages based on an innovative Current Controlled Frequency Fold-back (CCFF) method. In this mode, the circuit classically operates in Critical conduction Mode (CrM) when the inductor current exceeds a programmable value. When the current is below this preset level, the NCP1612 linearly decays the frequency down to about 20 kHz when the current is null. CCFF maximizes the efficiency at both nominal and light load. In particular, the stand-by losses are reduced to a minimum. Like in FCCrM controllers, an internal circuitry allows near-unity power factor even when the switching frequency is reduced.
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