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Texas Instruments LM3409
100-W, High-Resolution, 16-bit Color-Tunable, 0.15% Dimmable RGBW LED Luminaire Reference Design
Details
| Topologie | Abwärtswandler |
| Eingangsspannung | 28-42 V |
| IC-Revision | E1 |
Beschreibung
This reference design demonstrates the finest range of color control of individual RGBW LED strings with > 16 bits of PWM resolution while supporting the PWM modulation frequencies as high as 30 and 50 kHz. This reference design demonstrates the finest range of individual RGBW LED strings color control and enables development of highly efficient DC-DC LED luminaires capable of wide color gamut generation with trillions of colors while at the same time being imperceptible to high-end cameras and video broadcast equipment.
Eigenschaften
- Four buck current controllers driving RGBW LED strings at 30V and string current of up to 0.75A (also tested up to 1.25A)
- LED buck current controllers efficiency exceeding 96% at full load with maximum operating frequency up-to 600 kHz
- 100% to 0.2% Contrast setting for PWM dimming method at 30 and 50 kHz
- 100% to 0.15% Contrast setting and better Linearity for Shunt dimming mode at 30 and 50 kHz
- High-resolution PWM feature of C2000™ with 180-ps step enables current adjustment with resolution > 16 bits for both PWM and Shunt FET methods even at 50kHz dimming frequency
- 4Ch, 12bit DAC used for IADJ setting of individual LED strings to enable analog dimming
Typische Anwendungen
- Indoor Lighting / Stage Lighting
- LED Power Supply
Weiterführende Informationen
Artikeldaten
Artikel Nr. | Datenblatt | Simulation | Downloads | Status | Produktserie | C | Tol. C | VR(V (DC)) | Bauform | Betriebstemperatur | Q(%) | DF(%) | RISO | Keramiktyp | L(mm) | B(mm) | H(mm) | Fl(mm) | Verpackung | L(µH) | IR(mA) | ISAT(A) | fres(MHz) | Montageart | ISAT,10%(A) | ISAT,30%(A) | IR,40K(A) | IRP,40K(A) | Version | Z @ 100 MHz(Ω) | Zmax(Ω) | Testbedingung Zmax | IR 2(mA) | RDC max.(Ω) | Typ | Muster | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| WCAP-CSGP MLCCs 50 V(DC), 15 pF, ±5% | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWCAP-CSGP MLCCs 50 V(DC) | Kapazität15 pF | Kapazität±5% | Nennspannung50 V (DC) | Bauform0402 | Betriebstemperatur -55 °C up to +125 °C | Güte700 % | – | Isolationswiderstand10 GΩ | KeramiktypNP0 Klasse I | Länge1 mm | Breite0.5 mm | Höhe0.5 mm | Pad Dimension0.25 mm | Verpackung7" Tape & Reel | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | |||||
| WCAP-CSGP MLCCs 50 V(DC), 10 nF, ±10% | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWCAP-CSGP MLCCs 50 V(DC) | Kapazität10 nF | Kapazität±10% | Nennspannung50 V (DC) | Bauform0805 | Betriebstemperatur -55 °C up to +125 °C | – | Verlustfaktor2.5 % | Isolationswiderstand10 GΩ | KeramiktypX7R Klasse II | Länge2 mm | Breite1.25 mm | Höhe0.8 mm | Pad Dimension0.5 mm | Verpackung7" Tape & Reel | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | – | |||||
 | WE-CBF SMT-Ferrit, –, – | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWE-CBF SMT-Ferrit | – | – | – | Bauform0603 | Betriebstemperatur -55 °C up to +125 °C | – | – | – | – | Länge1.6 mm | Breite0.8 mm | Höhe0.8 mm | Pad Dimension0.3 mm | – | – | Nennstrom600 mA | – | – | MontageartSMT | – | – | – | – | VersionSMT | Impedanz @ 100 MHz1000 Ω | Maximale Impedanz1050 Ω | Maximale Impedanz120 MHz | Nennstrom 2830 mA | Gleichstromwiderstand0.3 Ω | TypBreitband | ||||
 | WE-TPC SMT-Speicherdrossel, –, – | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWE-TPC SMT-Speicherdrossel | – | – | – | Bauform5828 | Betriebstemperatur -40 °C up to +125 °C | – | – | – | – | Länge5.8 mm | Breite5.8 mm | Höhe2.8 mm | – | – | Induktivität15 µH | Nennstrom1380 mA | Sättigungsstrom1.15 A | Eigenresonanzfrequenz20 MHz | MontageartSMT | – | – | – | – | VersionSMT | – | – | – | – | Gleichstromwiderstand0.1 Ω | – | ||||
 | WE-PD Speicherdrossel, –, – | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWE-PD Speicherdrossel | – | – | – | Bauform1280 | Betriebstemperatur -40 °C up to +125 °C | – | – | – | – | Länge12 mm | Breite12 mm | Höhe8 mm | – | – | Induktivität47 µH | – | – | Eigenresonanzfrequenz7.9 MHz | MontageartSMT | Sättigungsstrom 13.3 A | Sättigungsstrom @ 30%4.3 A | Nennstrom3 A | Performance Nennstrom4.25 A | VersionGestanzt | – | – | – | – | Gleichstromwiderstand0.064 Ω | – |