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Texas Instruments UCC28780 | Demoboard UCC28780EVM-021
Using the UCC28780EVM-021, 45-W, 20-V High-Density Silicon (Si) Based, Active-Clamp Flyback Converter/Evaluation Module
Details
| Topologie | Sperrwandler |
| Eingangsspannung | 90-264 V |
| Schaltfrequenz | 1000 kHz |
| Ausgang 1 | 20 V / 2.25 A |
Beschreibung
The UCC28780EVM-021 is a 45-W evaluation module (EVM) for evaluating an off-line active-clamp flyback adapter for notebook charging and other applications. The EVM meets CoC Tier 2 and DoE Level 6 efficiency requirements. It is intended for evaluation purposes and is not intended to be an end product. The UCC28780EVM-021 converts input voltage of 90-VRMS to 264-VRMS down to 20-VDC, with a 2.25-A nominal output current rating and a 160-ms limit for over-power capability. The main devices used in this design are active clamp flyback controller UCC28780, SR controller UCC24612, and Si MOSFETs.
Eigenschaften
- 45-W, 20-V AC-to-DC converter using active-clamp flyback controller, Si MOSFET Power IC, and synchronous rectification
- High Efficiency (> 94%), High Power Density (> 20W/in3), Low Standby Power (40.1mW), and High Full Load Switching Frequency (291kHz)
- Exceeds EU Code of Conduct and US Department of Energy efficiency requirements
- Adaptive Burst Mode feature maintains high efficiency even at light loads
- This evaluation module is tested and orderable and includes a User's Guide
Typische Anwendungen
- High-Density AC-to-DC Adapters for Notebook, Tablet, TV, Set-Top Box and Printer
- USB Power Delivery, Direct and Fast Mobile Chargers
- USB Power Delivery, Direct and Fast Mobile Chargers
Weiterführende Informationen
Artikeldaten
Artikel Nr. | Datenblatt | Simulation | Downloads | Status | Produktserie | C | VR(V (AC)) | Sicherheitsklasse | dV/dt(V/µs) | DF @ 1 kHz(%) | RISO | Raster(mm) | L(mm) | B(mm) | H(mm) | Verpackung | Tol. C | Bauform | Betriebstemperatur | Q(%) | Keramiktyp | Fl(mm) | L(µH) | IR(A) | ISAT,10%(A) | RDC max.(Ω) | fres(MHz) | Version | Muster | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WCAP-FTX2 Folienkondensatoren, Across the mains, 68 nF | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWCAP-FTX2 Folienkondensatoren | Kapazität68 nF | Nennspannung275 V (AC) | SicherheitsklasseX2 | Spannungsanstiegsgeschwindigkeit400 V/µs | Verlustfaktor0.1 % | Isolationswiderstand30 GΩ | Raster7.5 mm | Länge10 mm | Breite6 mm | Höhe12 mm | VerpackungKarton | Kapazität±10% | BauformRaster 7.5 mm | Betriebstemperatur -40 °C up to +105 °C | – | – | – | – | – | – | – | – | – | ||||
 | WE-TI Tonneninduktivität, –, – | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWE-TI Tonneninduktivität | – | – | – | – | – | – | – | Länge6 mm | Breite6 mm | Höhe8.5 mm | – | – | Bauform5075 | Betriebstemperatur -40 °C up to +125 °C | – | – | – | Induktivität1 µH | Nennstrom8.5 A | Sättigungsstrom 18.5 A | Gleichstromwiderstand0.015 Ω | Eigenresonanzfrequenz140 MHz | VersionSchrumpfschlauch | ||||
| WE-TI Tonneninduktivität, –, – | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWE-TI Tonneninduktivität | – | – | – | – | – | – | – | Länge6 mm | Breite6 mm | Höhe8.5 mm | – | – | Bauform5075 | Betriebstemperatur -40 °C up to +125 °C | – | – | – | Induktivität22 µH | Nennstrom1.8 A | Sättigungsstrom 11.7 A | Gleichstromwiderstand0.13 Ω | Eigenresonanzfrequenz15 MHz | VersionSchrumpfschlauch | ||||
| WCAP-CSGP MLCCs 50 V(DC), –, 10 pF | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWCAP-CSGP MLCCs 50 V(DC) | Kapazität10 pF | Nennspannung50 V (AC) | – | – | – | Isolationswiderstand10 GΩ | – | Länge1 mm | Breite0.5 mm | Höhe0.5 mm | Verpackung7" Tape & Reel | Kapazität±5% | Bauform0402 | Betriebstemperatur -55 °C up to +125 °C | Güte600 % | KeramiktypNP0 Klasse I | Pad Dimension0.25 mm | – | – | – | – | – | – |