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Texas Instruments UCC28704 | Demoboard TIDA-01503
20-W, 100- to 425-V DC, 85% Efficient, Multi-Output, Auxiliary Power Supply Reference Design
Details
| Topologie | Sperrwandler |
| Eingangsspannung | 100-425 V |
| Schaltfrequenz | 85 kHz |
| Ausgang 1 | 15 V / 0.25 A |
| IC-Revision | 001 |
Beschreibung
This 20-W multiple output, auxiliary power reference design supports AC/DC industrial power supplies with a wide input voltage range (100-425 VDC). The design achieves a peak efficiency of 85% by using discontinuous conduction mode (DCM) valley-switching of TI’s UCC28704 flyback controller with primary side regulation. The compact design uses a minimum number of components to help protect the system, including output overcurrent and output short circuit. The hardware is tested to meet Conducted Emission norm EN55022 Class A using an external EMI filter.
Eigenschaften
Remark: BOM and Test result are added.
FeaturesPeak power conversion efficiency of >85% at 400VDC full loadDesigned for wide operating input voltage range from 100- to 425-V DCDelivers full power of 20 W over the entire operating voltage rangeConfigurable outputs: 15V (primary referred), 5V & 15V (isolated)Low stand-by power of <100mWCompact form-factor to achieve high power density solutions: 40mm × 40mm
Typische Anwendungen
- Auxiliary Power for AC/DC, Server Power Supply
- Telecom Rectifiers
- UPS and Industrial Power Supplies
Weiterführende Informationen
Artikeldaten
Artikel Nr. | Datenblatt | Simulation | Downloads | Status | Produktserie | Vin | VOut1(V) | IOut1(A) | VOut2(V) | IOut2(A) | Vaux(V) | L(µH) | fswitch(kHz) | NPRI : NSEC : NAUX | ISAT(A) | VT(V (AC)) | Bauform | Montageart | L(mm) | B(mm) | H(mm) | Muster | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-OLTI Offline Flyback Transformers, 71 - 301 V (AC), 15 V | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWE-OLTI Offline Flyback Transformers | Input Voltage 71 - 301 V (AC) | Ausgangsspannung 115 V | Ausgangsstrom 10.25 A | Ausgangsspannung 25 V | Ausgangsstrom 23 A | Hilfsspannung15 V | Induktivität500 µH | Switching Frequency 85 | Übersetzungsverhältnis8:1.75:1:2.75 | Sättigungsstrom6 A | Prüfspannung3000 V (AC) | BauformEE20/10/6 | MontageartTHT | Länge22.2 mm | Breite25.8 mm | Höhe16 mm |