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Overview
| Topology | Flyback Converter |
| Input voltage | 90-320 V |
| Output 1 | 40 V / 0.5 A |
Description
The NCL30488 [1] is a power factor corrected controllerwith primary side constant voltage (CV) and constantcurrent (CC) control suitable for flyback, buck−boost orSEPIC converters. The NCL30488 is housed in an SOIC 8package and targets high−performance LED drivers. Thesecontroller integrate a proprietary circuit for power factorcorrection and constant current control allowing to achievea power factor above 0.9 and total harmonic distortion below10% for universal mains input. This controller is normallyprimary side regulated, but the version (TBD) is compatiblewith secondary side regulation. In this version, the COMPpin features a pullup resistor to the internal reference voltagerail and allows directly connecting an optocoupler collectorto the pin. The current−mode, quasi−resonant architecture ofthis controller optimizes the efficiency by turning on theMOSFET when the drain−source voltage is minimal(valley). The valley lockout and frequency foldbackcircuitry maintain high−efficiency performance in in lightload during constant−voltage regulation.
Features
The circuit contains a set of powerfulprotections to ensure a robust LED driver design:
- Output over voltage protection
- Cycle−by−cycle peak current limit
- Winding and output diode short circuit protection
- Output short circuit protection
- VCC pin over voltage protection
- Floating/short pin detection: the circuit can detect most ofthese situations which is of great help to pass safety tests.
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | VR 2(V (DC)) | dV/dt(V/µs) | DF @ 1 kHz(%) | RISO | Pitch(mm) | Packaging | L(mH) | IR(A) | ISAT,10%(A) | RDC max.(Ω) | fres(MHz) | Version | IR(A) | L1(mH) | RDC max.(Ω) | VR(V (DC)) | VT(V (AC)) | Material | L(mm) | W(mm) | H(mm) | Mount | VRMS(V) | VDC(V) | VBR(V) | IPeak(A) | Wmax(J) | PDiss(W) | VDE Approval | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WCAP-FTBE Film Capacitors, 47 nF, 504 V (DC) | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-FTBE Film Capacitors | Capacitance47 nF | Rated Voltage 2504 V (DC) | Rate of Voltage Rise100 V/µs | Dissipation Factor1 % | Insulation Resistance9 GΩ | Pitch7.5 mm | PackagingCarton | – | – | – | – | – | VersionTHT | – | – | – | Rated Voltage630 V (DC) | – | – | Length10.5 mm | Width6 mm | Height12 mm | – | – | – | – | – | – | – | – | ||||
 | WE-LF Common Mode Power Line Choke, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-LF Common Mode Power Line Choke | – | – | – | – | – | – | – | Inductance2.2 mH | Rated Current2 A | – | DC Resistance0.1 Ω | – | VersionTHT | Rated Current2 A | Inductance [1]2.2 mH | DC Resistance [1]0.1 Ω | Rated Voltage250 V (DC) | Insulation Test Voltage1500 V (AC) | MaterialMnZn | Length18 mm | Width18 mm | Height13 mm | MountTHT | – | – | – | – | – | – | VDE Approval40042531 | ||||
 | WE-VD Disk Varistor, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-VD Disk Varistor | – | – | – | – | – | – | – | – | – | – | – | – | VersionTHT | – | – | – | – | – | – | Length9 mm | Width5.1 mm | Height13 mm | MountTHT | AC Operating Voltage420 V | DC Operating Voltage560 V | (Reverse) Breakdown Voltage680 V | (Reverse) Peak Pulse Current1750 A | Energy Absorption56 J | Power Dissipation0.25 W | VDE ApprovalYes | ||||
 | WE-TI Radial Leaded Wire Wound Inductor, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-TI Radial Leaded Wire Wound Inductor | – | – | – | – | – | – | – | Inductance0.01 mH | Rated Current1.85 A | Saturation Current @ 10%2.5 A | DC Resistance0.05 Ω | Self Resonant Frequency28 MHz | VersionStandard | – | – | – | – | – | – | Length6 mm | Width6 mm | Height6.5 mm | MountTHT | – | – | – | – | – | – | – | ||||
750370980 | Offline Transformer, –, – | Simulation– | Downloads– | Status Activei| Production is active. Expected lifetime: >10 years. | Product series Offline Transformer | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |