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Overview
| Topology | Flyback Converter |
| Input voltage | 180-264 V |
| Output 1 | 15 V / 0.02 A |
| Output 2 | 5 V / 0.03 A |
| Output 3 | 15 V / 0.02 A |
| IC revision | B |
Description
180-VAC - 264-VAC input multiple output flyback reference designThis offline flyback reference design uses the UCC28740 controller to generate 3 isolated outputs (5 V at 30 mA, 15 V at 20 mA, 15 V at 20 mA) from an AC input (180 VAC - 264 VAC). The design can provide 750-mW output power. The UCC28740 uses an optical coupler to regulate the 5-V output and to improve transient response. The valley-switching technique reduces switching losses and keeps the efficiency high.
Features
180 VAC - 264 VAC input to 3 isolated outputsValley-switching operation for highest overall efficiencyOptocoupled feedback for constant voltage regulation
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Product series | VIN | VOut1 (V) | IOut1 (A) | VOut2 (V) | IOut2 (A) | VOut3 (V) | IOut3 (A) | Vaux (V) | fswitch (kHz) | L (µH) | NPRI : NSEC : NAUX | ISAT (A) | VT (V (DC)) | L (mm) | W (mm) | H (mm) | Mount | Size | IR (A) | RDC max. (Ω) | fres (MHz) | Version | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 750317696 | SPEC | 5 files | MID-OLTI Offline Flyback Transformers for Texas Instruments | 200 - 375 V (DC) | 15 | 0.02 | 15 | 0.02 | 5 | 0.03 | 15 | 32 | 2500 | 18:2.7:1:1.7:2.7 | 0.54 | 4000 | 17.78 | 26.9 | 13.8 | SMT | EE16/8/5 | – | – | – | – | ||
 | 7447462102 | SPEC | 8 files | WE-TI Radial Leaded Wire Wound Inductor | – | – | – | – | – | – | – | – | – | 1000 | – | 0.27 | – | 6 | 6 | 8.5 | THT | 5075 | 0.25 | 6 | 2.3 | Heat Shrinking Tube |
| Order Code | Datasheet | Simulation | |
|---|---|---|---|
| 750317696 | SPEC | |
| 7447462102 | SPEC |
| Samples |
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| Order Code | Datasheet | Simulation | Downloads | Product series | VIN | VOut1 (V) | IOut1 (A) | VOut2 (V) | IOut2 (A) | VOut3 (V) | IOut3 (A) | Vaux (V) | fswitch (kHz) | L (µH) | NPRI : NSEC : NAUX | ISAT (A) | VT (V (DC)) | L (mm) | W (mm) | H (mm) | Mount | Size | IR (A) | RDC max. (Ω) | fres (MHz) | Version | Samples |
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