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Texas Instruments UCC28742 | Demoboard PMP40508
AC input, 5-V/2-A and 12-V/2.5-A dual-output flyback converter reference design
Details
| Topologie | Sperrwandler |
| Eingangsspannung | 85-265 V |
| Schaltfrequenz | 80-130 kHz |
| Ausgang 1 | 5 V / 2 A |
| Ausgang 2 | 12 V / 2.5 A |
| IC-Revision | 001 |
Beschreibung
This reference design is a 40-W dual-output offline converter using UCC28742, a secondary side regulator. A 5-V rail is regulated to within ±1% precision and cross regulation of 12-V rail is within -8%~+14% at 25% to 100% load. The design adopts a single-layer PCB for cost optimization. The peak efficiency is 82.68% at 115 V/60 Hz and 84.03% at 230 V/50 Hz. Power consumption at standby mode is 32.7 mW at 115 V/60 Hz and 57.51 mW at 230 V/50 Hz.
Eigenschaften
- Single-layer PCB design for cost optimization
- High precision of 5-V output rail
- Peak efficiency 82.68% at 115 V/60 Hz and 84.03% at 230 V/50 Hz
- Low standby power consumption
Typische Anwendungen
- Smart Electricity Meters
- Industrial and Medical AC-to-DC Power Supplies / Bias Supply for UPS, Server PSU, etc
- AC-to-DC Power Supply for Appliances
- Power Supply for Cable Modem, Television, Set-Top Box, and Wireless Routers
Weiterführende Informationen
Artikeldaten
Artikel Nr. | Datenblatt | Simulation | Downloads | Status | Produktserie | Pins | PCB/Kabel/Panel | Modularity | Typ | Wire Section | C | Sicherheitsklasse | dV/dt(V/µs) | DF @ 1 kHz(%) | RISO | Raster(mm) | Verpackung | ISAT,10%(A) | fres(MHz) | Version | IR(A) | L(mH) | RDC max.(mΩ) | VR(V (AC)) | VT(V (AC)) | Material | L(mm) | B(mm) | H(mm) | Montageart | Muster | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WR-TBL Series 2141 - 3.50 mm Horiz. Entry Modular, 2, Käfigzugklemme | Simulation– | Downloads6 Dateien | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | Pins2 | PCB/Kabel/PanelPCB | ModularityJa | TypHorizontal | Wire Section 24 to 16 (AWG) 0.2 to 1 (mm²) | – | – | – | – | – | Raster3.5 mm | VerpackungKarton | – | – | – | Nennstrom10 A | – | – | – | – | – | Länge7.05 mm | – | – | MontageartTHT | |||
 | WE-CMB Stromkompensierte Netzdrossel, 4, – | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWE-CMB Stromkompensierte Netzdrossel | Pins4 | – | – | – | – | – | – | – | – | – | – | – | – | – | VersionTHT | Nennstrom1.5 A | Induktivität20 mH | Gleichstromwiderstand270 mΩ | Nennspannung250 V (AC) | Prüfspannung1500 V (AC) | MaterialMnZn | Länge23 mm | Breite13.8 mm | Höhe25.5 mm | MontageartTHT | ||||
 | WCAP-FTX2 Folienkondensatoren, –, Across the mains | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWCAP-FTX2 Folienkondensatoren | – | – | – | – | – | Kapazität220 nF | SicherheitsklasseX2 | Spannungsanstiegsgeschwindigkeit180 V/µs | Verlustfaktor0.1 % | Isolationswiderstand30 GΩ | Raster15 mm | VerpackungKarton | – | – | – | – | – | – | Nennspannung275 V (AC) | – | – | Länge18 mm | Breite6 mm | Höhe11.5 mm | MontageartBoxed THT | ||||
 | WE-TI Tonneninduktivität, –, – | Status Aktivi| Produktion ist aktiv. Erwartete Lebenszeit: >10 Jahre. | ProduktserieWE-TI Tonneninduktivität | – | – | – | – | – | – | – | – | – | – | – | – | Sättigungsstrom 15.7 A | Eigenresonanzfrequenz65 MHz | VersionSchrumpfschlauch | Nennstrom6.3 A | Induktivität0.0022 mH | Gleichstromwiderstand20 mΩ | – | – | – | Länge6 mm | Breite6 mm | Höhe8.5 mm | MontageartTHT |