DATA SHEET www.onsemi.com High-Voltage, Multimode 10 Power Factor Controller 1 SOIC9 NB CASE 751BP NCP1618 The NCP1618 is an innovative multimode power factor controller. MARKING DIAGRAM The circuit naturally transitions from one operation mode to another 10 depending the switching period duration so that the efficiency is NCP1618X optimized over the line/load range. In verylightload conditions, the ALYW circuit can enter the softSKIP 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 1 external components. NCP1618X = Specific Device Code Multimode Operation A = Assembly Location L = Wafer Lot Multimode Operation for Optimized Operation over the Line/Load Y = Year Range: W = Work Week Continuous Conduction Mode (CCM) in HeavyLoad Conditions = PbFree Package FrequencyClamped Critical Conduction Mode (FCCrM) in Medium and LightLoad Conditions PIN CONNECTIONS FCCrM: Critical Conduction Mode (CrM) when the CrM Switching Frequency is Lower than 130 kHz, Discontinuous FB 1 10 HV Conduction Mode (DCM) at 130 kHz Otherwise DCM Frequency Reduction in Light Load Conditions Minimum DCM Frequency Forced above 25 kHz pfcOK 2 Valley TurnOn in FCCrM SoftSKIP Mode in Very Light Load Conditions Vm 3 8 Vcc NearUnity Power Factor in All Modes (Except SoftSKIP Mode) Firm Control of the Switching Frequency between 25 kHz and CS47 Driver 130 kHz ZCD 5 6 Ground General Features HighVoltage StartUp Current Source for V Capacitor Charge at CC Startup ORDERING INFORMATION Internal Compensation of the Regulation Loop See detailed ordering and shipping information on page 28 of X2 Cap Discharge Function this data sheet. Fast Line / Load Transient Compensation (Dynamic Response Enhancer) Large V Operating Range (9.5 V to 35 V) CC Line Range Detection pfcOK Signal For Enabling/Disabling the Downstream Converter Jittering for Easing EMI Filtering Protection Features Typical Applications Soft and FastOvervoltage Protection PC Power Supplies LineSag and BrownOut Detection All OffLine Appliances Requiring Power 2Level Over Current Detection Factor Correction Bulk UnderVoltage Detection OVP2: Redundant OverVoltage Protection Using the ZCD Pin Thermal Shutdown This document contains information on some products that are still under development. onsemi reserves the right to change or discontinue these products without notice. Semiconductor Components Industries, LLC, 2021 1 Publication Order Number: November, 2021 Rev. 4 NCP1618/DNCP1618 Table 1. SELECTION TABLE NCP1618A NCP1618B NCP1618C NCP1618D NCP1618F f 65 kHz 65 kHz 65 kHz 65 kHz 65 kHz CCM f 130 kHz 130 kHz 130 kHz 130 kHz 130 kHz clamp OVP2 YES NO NO NO NO V 17.0 V 10.5 V 17.0 V 17.0 V 17.0 V CC(on) V / BO(start) 111 V / 100 V 95 V / 87 V 111 V / 100 V 111 V / 100 V 111 V / 100 V V BO(stop) 2 2 2 2 2 12% V 6% V 12% V 12% V 12% V P in,rms () in,rms in,rms in,rms in,rms FF,th LL L f L f L f L f L f CCM CCM CCM CCM CCM Current criterion for YES NO YES NO YES CCM detection and confirmation at high line CCM operation YES YES YES YES FORCED X2 cap discharger NO NO YES NO NO NOTES: f is the switching frequency when the circuit operates in continuous conduction mode (CCM) CCM f is the maximum level to which the switching frequency is clamped when the circuit operates in FCCrM (frequency clamped critical clamp conduction mode). Practically, considering all modes, the circuit maintains the switching frequency above 25 kHz and below f . clamp V and V respectively are the upper and the lower thresholds of the brownout protection (Table 1 provides their typical BO(start) BO(stop) value) V is the V startup threshold, that is, the V voltage at which the circuit starts to operate (Table 1 provides the typical value) CC(on) CC CC OVP2: if an image of the output voltage is provided to the ZCD pin during the off time, the circuit can detect an overvoltage of the output voltage and provide a redundant protection (P ) is the expression of the power below which the circuit enters the frequency foldback operation at low line. This threshold varies FF,th LL as a function of the line rms voltage square and depends on the selected inductor value (L). In high line conditions, the power threshold are obtained by dividing the power expression by two (see the frequency foldback section). See the CCM detection section for more information regarding the current criterion for CCM detection and confirmation at high line www.onsemi.com 2