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Overview
| Topology | Buck Converter |
| IC revision | 1.0 |
Description
The NCP1615 is a high voltage PFC controller designed to drive PFC boost stages based on an innovative Current Controlled Frequency Foldback (CCFF) method. In this mode, the circuit operates in critical conduction mode (CrM) when the inductor current exceeds a programmable value. When the current is below this preset level, the NCP1615 linearly decays the frequency down to a minimum of about 26 kHz at the sinusoidal zero−crossing. CCFF maximizes the efficiency at both nominal and light load. In particular, the standby losses are reduced to a minimum. Innovative circuitry allows near− unity power factor even when the switching frequency is reduced.The integrated high voltage start−up circuit eliminates the need for external start−up components and consumes negligible power during normal operation. Housed in a SOIC−14 or SOIC−16 package, the NCP1615 incorporates the features necessary for robust and compact PFC stages, with few external components.
Features
- High Voltage Start-Up Circuit
- Critical conduction mode with current controlled frequency foldback
- Integrated Input Filter Capacitor (X2) Discharge Circuitry
- Dynamic Response Enhancer
- Soft Overvoltage Protection
- -500 mA/+800 mA Drive Capability
- Two Vcc startup versions: 10.5 V (A & B) and 17 V (C & D)
- AC Line Brownout Detection
- PFC Okay Output
Typical applications
- Off-line power supplies/ Lighting Ballast/ LED Lighting Drivers and Power Supplies
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | λDom typ.(nm) | Emitting Color | λPeak typ.(nm) | λPeak B typ.(nm) | λPeak G typ.(nm) | λPeak R typ.(nm) | λDom B typ.(nm) | λDom G typ.(nm) | λDom R typ.(nm) | IV typ.(mcd) | IV B typ.(mcd) | IV G typ.(mcd) | IV R typ.(mcd) | VF typ.(V) | VF B typ.(V) | VF G typ.(V) | VF R typ.(V) | Chip Technology | 2θ50% typ.(°) | C | Safety Class | dV/dt(V/µs) | DF @ 1 kHz(%) | RISO | Pitch(mm) | Packaging | ISAT,10%(A) | fres(MHz) | Version | Endurance(h) | IRIPPLE(mA) | ILeak(µA) | DF(%) | Ø D(mm) | Interface Type | Type | Gender | Pins | PCB Thickness(mm) | Working Voltage(V (DC)) | G(mm) | Operating Temperature | IR(A) | L(mH) | RDC max.(mΩ) | VR(V (AC)) | VT(V (AC)) | Material | L(mm) | W(mm) | H(mm) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WL-SMCW SMT Mono-color Chip LED Waterclear, 470 nm, Blue | Downloads27 files RAY files
| Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWL-SMCW SMT Mono-color Chip LED Waterclear | Dominant Wavelength [typ.]470 nm | Emitting ColorBlue | Peak Wavelength [typ.]465 nm | – | – | – | – | – | – | Luminous Intensity [typ.]145 mcd | – | – | – | Forward Voltage [typ.]3.2 V | – | – | – | Chip TechnologyInGaN | Viewing Angle Phi 0° [typ.]140 ° | – | – | – | – | – | – | PackagingTape and Reel | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Operating Temperature -40 °C up to +85 °C | – | – | – | – | – | – | Length1.6 mm | Width0.8 mm | Height0.7 mm | MountSMT | |||
 | WE-CMBNC Common Mode Power Line Choke Nanocrystalline, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-CMBNC Common Mode Power Line Choke Nanocrystalline | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | VersionTHT | – | – | – | – | – | – | – | – | Pins4 | – | – | Pin length5 mm | Operating Temperature -55 °C up to +125 °C | Rated Current5 A | Inductance9 mH | DC Resistance32 mΩ | Rated Voltage300 V (AC) | Insulation Test Voltage2100 V (AC) | MaterialNanocrystalline | Length23 mm | Width13.5 mm | Height26 mm | MountTHT | ||||
 | WE-CMB Common Mode Power Line Choke, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-CMB Common Mode Power Line Choke | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | VersionTHT | – | – | – | – | – | – | – | – | Pins4 | – | – | Pin length3 mm | Operating Temperature -40 °C up to +125 °C | Rated Current4 A | Inductance2.2 mH | DC Resistance30 mΩ | Rated Voltage250 V (AC) | Insulation Test Voltage1500 V (AC) | MaterialMnZn | Length23.5 mm | Width13.8 mm | Height25.5 mm | MountTHT | ||||
 | WCAP-FTX2 Film Capacitors, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-FTX2 Film Capacitors | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Capacitance100 nF | Safety ClassX2 | Rate of Voltage Rise300 V/µs | Dissipation Factor0.1 % | Insulation Resistance30 GΩ | Pitch10 mm | PackagingBulk | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Pin length18 mm | Operating Temperature -40 °C up to +105 °C | – | – | – | Rated Voltage275 V (AC) | – | – | Length13 mm | Width7 mm | Height13 mm | MountBoxed THT | ||||
| WCAP-FTX2 Film Capacitors, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-FTX2 Film Capacitors | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Capacitance330 nF | Safety ClassX2 | Rate of Voltage Rise260 V/µs | Dissipation Factor0.1 % | Insulation Resistance30 GΩ | Pitch12.5 mm | PackagingBulk | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Pin length18 mm | Operating Temperature -40 °C up to +105 °C | – | – | – | Rated Voltage275 V (AC) | – | – | Length15 mm | Width8.5 mm | Height14 mm | MountBoxed THT | ||||
 | WE-FI Leaded Toroidal Line Choke, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-FI Leaded Toroidal Line Choke | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Pin length15 mm | Operating Temperature -40 °C up to +105 °C | Rated Current5.4 A | Inductance0.15 mH | DC Resistance42 mΩ | – | – | – | Length26 mm | Width13 mm | – | MountTHT | |||
 | WE-TI Radial Leaded Wire Wound Inductor, –, – | Downloads15 files EDA models: Components ZIP
Download all 15 files as zip archive | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-TI Radial Leaded Wire Wound Inductor | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Saturation Current @ 10%3.1 A | Self Resonant Frequency3.6 MHz | VersionHeat Shrinking Tube | – | – | – | – | – | – | – | – | – | – | – | – | Operating Temperature -40 °C up to +125 °C | Rated Current2.6 A | Inductance0.1 mH | DC Resistance90 mΩ | – | – | MaterialNiZn | Length11 mm | Width11 mm | Height19 mm | MountTHT | |||
 | WL-SFTW SMT Full-color TOP LED Waterclear, –, Red & Green & Blue | Simulation– | Downloads26 files RAY files
| Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWL-SFTW SMT Full-color TOP LED Waterclear | – | Emitting ColorRed & Green & Blue | – | Peak Wavelength (Blue) [typ.]465 nm | Peak Wavelength (Green) [typ.]515 nm | Peak Wavelength (Red) [typ.]635 nm | Dominant Wavelength (Blue) [typ.]470 nm | Dominant Wavelength (Green) [typ.]520 nm | Dominant Wavelength (Red) [typ.]625 nm | – | Luminous Intensity (Blue) [typ.]230 mcd | Luminous Intensity (Green) [typ.]950 mcd | Luminous Intensity (Red) [typ.]270 mcd | – | Forward Voltage (Blue) [typ.]3.2 V | Forward Voltage (Green) [typ.]3.2 V | Forward Voltage (Red) [typ.]2 V | Chip TechnologyAlInGaP + InGaN | Viewing Angle Phi 0° [typ.]120 ° | – | – | – | – | – | – | PackagingTape and Reel | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Operating Temperature -40 °C up to +85 °C | – | – | – | – | – | – | Length3.5 mm | Width2.8 mm | Height1.9 mm | MountSMT | ||
 | WCAP-AT1H Aluminum Electrolytic Capacitors, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-AT1H Aluminum Electrolytic Capacitors | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Capacitance47 µF | – | – | – | – | Pitch2.5 mm | PackagingAmmopack | – | – | – | Endurance 5000 | Ripple Current160 mA | Leakage Current11.75 µA | Dissipation Factor14 % | Diameter6.3 mm | – | – | – | – | – | – | – | – | – | – | – | Rated Voltage25 V (AC) | – | – | Length11 mm | – | – | – | ||||
| WCAP-AT1H Aluminum Electrolytic Capacitors, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-AT1H Aluminum Electrolytic Capacitors | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Capacitance47 µF | – | – | – | – | Pitch3.5 mm | PackagingAmmopack | – | – | – | Endurance 8000 | Ripple Current240 mA | Leakage Current16.45 µA | Dissipation Factor12 % | Diameter8 mm | – | – | – | – | – | – | – | – | – | – | – | Rated Voltage35 V (AC) | – | – | Length11.5 mm | – | – | – | ||||
| WCAP-AT1H Aluminum Electrolytic Capacitors, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-AT1H Aluminum Electrolytic Capacitors | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Capacitance220 µF | – | – | – | – | Pitch5 mm | PackagingAmmopack | – | – | – | Endurance 10000 | Ripple Current580 mA | Leakage Current55 µA | Dissipation Factor14 % | Diameter10 mm | – | – | – | – | – | – | – | – | – | – | – | Rated Voltage25 V (AC) | – | – | Length16 mm | – | – | – | ||||
 | WCAP-ATLI Aluminum Electrolytic Capacitors, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-ATLI Aluminum Electrolytic Capacitors | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Capacitance680 µF | – | – | – | – | Pitch5 mm | PackagingAmmopack | – | – | – | Endurance 5000 | Ripple Current2260 mA | Leakage Current238 µA | Dissipation Factor9 % | Diameter13 mm | – | – | – | – | – | – | – | – | – | – | – | Rated Voltage35 V (AC) | – | – | Length20 mm | – | – | – | ||||
 | WR-USB Standard Connectors, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-USB Standard Connectors | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Insulation Resistance100 MΩ | – | PackagingTray | – | – | – | – | – | – | – | – | Interface TypeType A | TypeHorizontal | GenderReceptacle | Pins9 | – | Working Voltage20 V (DC) | – | Operating Temperature -20 °C up to +85 °C | Rated Current5 A | – | – | – | – | – | – | – | – | MountTHR | |||
 | WR-USB Type C Connectors, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-USB Type C Connectors | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Insulation Resistance1000 MΩ | – | PackagingTape and Reel | – | – | – | – | – | – | – | – | Interface TypeType C | TypeHorizontal | GenderReceptacle | Pins24 | PCB Thickness1.6 mm | Working Voltage48 V (DC) | Pin length1.9 mm | Operating Temperature -40 °C up to +105 °C | Rated Current5 A | – | – | – | – | – | – | – | – | MountTHR | |||
 | WR-PHD Pin Header - Single, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header - Single | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Insulation Resistance1000 MΩ | Pitch2.54 mm | PackagingBag | – | – | – | – | – | – | – | – | – | TypeStraight | GenderPin Header | Pins2 | – | Working Voltage250 V (DC) | – | Operating Temperature -40 °C up to +105 °C | Rated Current3 A | – | – | – | – | – | Length5.08 mm | – | – | MountTHT | |||
 | WR-PHD Pin Header - Single, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header - Single | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Insulation Resistance1000 MΩ | Pitch2.54 mm | PackagingBag | – | – | – | – | – | – | – | – | – | TypeStraight | GenderPin Header | Pins3 | – | Working Voltage250 V (DC) | – | Operating Temperature -40 °C up to +105 °C | Rated Current3 A | – | – | – | – | – | Length7.62 mm | – | – | MountTHT | |||
 | WR-PHD Pin Header - Single, –, – | Simulation– | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWR-PHD Pin Header - Single | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | Insulation Resistance1000 MΩ | Pitch2.54 mm | PackagingBag | – | – | – | – | – | – | – | – | – | TypeStraight | GenderPin Header | Pins4 | – | Working Voltage250 V (DC) | – | Operating Temperature -40 °C up to +105 °C | Rated Current3 A | – | – | – | – | – | Length10.16 mm | – | – | MountTHT | |||
750317576 | Inductor, –, – | Simulation– | Downloads– | Status Activei| Production is active. Expected lifetime: >10 years. | Product series Inductor | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |