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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 | Operating Temperature | Pitch (mm) | Packaging | L (mH) | IR (A) | ISAT (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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 890303422005CS | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WCAP-FTBE Film Capacitors | 47 nF | 504 | 100 | 1 | 9 GΩ | -40 °C up to +85 °C | 7.5 | Carton | – | – | – | – | – | THT | – | – | – | 630 | – | – | 10.5 | 6 | 12 | – | – | – | – | – | – | – | – | ||
 | 7446622002 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-LF Common Mode Power Line Choke | – | – | – | – | – | -40 °C up to +125 °C | – | – | 2.2 | 2 | – | 0.1 | – | THT | 2 | 2.2 | 0.1 | 250 | 1500 | MnZn | 18 | 18 | 13 | THT | – | – | – | – | – | – | 40042531 | ||
 | 820474211 | SPEC | 6 files | Active i| Production is active. Expected lifetime: >10 years. | WE-VD Disk Varistor | – | – | – | – | – | -40 °C up to +85 °C | – | – | – | – | – | – | – | THT | – | – | – | – | – | – | 9 | 5.1 | 13 | THT | 420 | 560 | 680 | 1750 | 56 | 0.25 | Yes | ||
 | 744779100 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-TI Radial Leaded Wire Wound Inductor | – | – | – | – | – | – | – | – | 0.01 | 1.85 | 2.1 | 0.05 | 28 | Standard | – | – | – | – | – | – | 6 | 6 | 6.5 | THT | – | – | – | – | – | – | – | ||
| 750370980 | SPEC | – | – | Active i| Production is active. Expected lifetime: >10 years. | Offline Transformer | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 890303422005CS | SPEC | |
| 7446622002 | SPEC | |
| 820474211 | SPEC | |
| 744779100 | SPEC | |
| 750370980 | SPEC | – |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | VR 2 (V (DC)) | dV/dt (V/µs) | DF @ 1 kHz (%) | RISO | Operating Temperature | Pitch (mm) | Packaging | L (mH) | IR (A) | ISAT (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 |
|---|