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NCP1618

ON Semiconductor
Part Number NCP1618
Manufacturer ON Semiconductor
Description Multimode Power Factor Controller
Published Jul 16, 2023
Detailed Description DATA SHEET www.onsemi.com High-Voltage, Multimode Power Factor Controller NCP1618 The NCP1618 is an innovative multimod...
Datasheet PDF File NCP1618 PDF File

NCP1618
NCP1618

Overview
DATA SHEET www.
onsemi.
com High-Voltage, Multimode Power Factor Controller NCP1618 The NCP1618 is an innovative multimode power factor controller.
The circuit naturally transitions from one operation mode to another depending the switching period duration so that the efficiency is optimized over the line/load range.
In very−light−load conditions, the circuit can enter the soft−SKIP mode for minimized losses.
Housed in a SO−9 package, the circuit further incorporates the features necessary for robust and compact PFC stages, with few external components.
Multimode Operation  Multimode Operation for Optimized Operation over the Line/Load Range:  Continuous Conduction Mode (CCM) in Heavy−Load Conditions  Frequency−Clamped Critical Conduction Mode (FCCrM) in Medium− and Light−Load Conditions  FCCrM: Critical Conduction Mode (CrM) when the CrM Switching Frequency is Lower than 130 kHz, Discontinuous Conduction Mode (DCM) at 130 kHz Otherwise  DCM Frequency Reduction in Light Load Conditions  Minimum DCM Frequency Forced above 25 kHz  Valley Turn−On in FCCrM  Soft−SKIP Mode in Very Light Load Conditions  Near−Unity Power Factor in All Modes (Except Soft−SKIP Mode)  Firm Control of the Switching Frequency between 25 kHz and 130 kHz General Features  High−Voltage Start−Up Current Source for VCC Capacitor Charge at Startup  Internal Compensation of the Regulation Loop  X2 Cap Discharge Function  Fast Line / Load Transient Compensation (Dynamic Response Enhancer)  Large VCC Operating Range (9.
5 V to 35 V)  Line Range Detection  pfcOK Signal For Enabling/Disabling the Downstream Converter  Jittering for Easing EMI Filtering Protection Features  Soft− and Fast−Overvoltage Protection  Line−Sag and Brown−Out Detection  2−Level Over Current Detection  Bulk Under−Voltage Detection  OVP2: Redundant Over−Voltage Protection Using the ZCD Pin  Thermal Shutdown This document contains information on some products that are still under development.
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