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Overview
| Topology | Flyback Converter |
| Input voltage | 90-264 V |
| IC revision | B |
Description
This reference design uses the UCC28780 active clamp flyback controller to generate an isolated output of 20 V @ 3.5 A over an input voltage rage of 90 Vac to 264 Vac. The design also uses the UCC24612 synchronous rectifier controller on the secondary side. Zero voltage switching (ZVS) ensures high efficiency over a wide operating range.
Features
- Zero voltage switching (ZVS) provides high efficiency (93% peak value)
- Adaptive burst mode feature maintains high efficiency even at light loads
- Synchronous rectifier using drain-to-source voltage sensing
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Product series | VIN | VOut1 (V) | IOut1 (A) | Vaux (V) | fswitch (kHz) | NPRI : NSEC : NAUX | ISAT (A) | Size | fres (MHz) | Version | IR (A) | L (µH) | RDC max. (mΩ) | VR (V (AC)) | VT (V (DC)) | Material | L (mm) | W (mm) | H (mm) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 750318431 | SPEC | 3 files | MID-OLTI Offline Flyback Transformers for Texas Instruments | 150 - 420 V (DC) | 24.35 | 2.75 | 16.5 | 170 - 240 | 4:1:0.63 | 5.3 | EE25/13/7 | – | – | – | 120 | – | – | 3000 | – | 27.05 | 32.25 | 22.86 | THT | ||
 | 744823220 | SPEC | 10 files | WE-CMB Common Mode Power Line Choke | – | – | – | – | – | – | – | M | – | THT | 1.5 | 20000 | 270 | 250 | 1500 | MnZn | 23 | 13.8 | 25.5 | THT | ||
 | 7447462010 | SPEC | 8 files | WE-TI Radial Leaded Wire Wound Inductor | – | – | – | – | – | – | 8 | 5075 | 140 | Heat Shrinking Tube | 8.5 | 1 | 15 | – | – | – | 6 | 6 | 8.5 | THT | ||
| 744732100 | SPEC | 8 files | WE-TI Radial Leaded Wire Wound Inductor | – | – | – | – | – | – | 4 | 8075 | 27 | Heat Shrinking Tube | 4 | 10 | 33 | – | – | – | 9.5 | 9.5 | 8 | THT |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Product series | VIN | VOut1 (V) | IOut1 (A) | Vaux (V) | fswitch (kHz) | NPRI : NSEC : NAUX | ISAT (A) | Size | fres (MHz) | Version | IR (A) | L (µH) | RDC max. (mΩ) | VR (V (AC)) | VT (V (DC)) | Material | L (mm) | W (mm) | H (mm) | Mount | Samples |
|---|