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Overview
| Topology | Flyback Converter |
| Input voltage | 85-400 V |
| Output 1 | 12 V / 1.1 A |
Description
85-VAC - 400-VAC input multiple output flyback reference designThis offline flyback reference design uses the UCC28700 controller to generate 2 isolated outputs (12 V at 1.2 A, -3.3 V at 10 mA) from an AC input (85 VAC - 400 VAC). The controller provides accurate voltage and current regulation with primary-side feedback, eliminating the need for opto-coupler feedback circuits. The valley-switching technique reduces switching losses and keeps the efficiency high.
Features
85 VAC - 400 VAC input to 2 isolated outputsValley-switching operation for high overall efficiencyPrimary-side regulation eleminates opto-couplerPrecise control of output voltage and current
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Status | Product series | VIN | VOut1 (V) | IOut1 (A) | VOut2 (V) | IOut2 (A) | Vaux (V) | fswitch (kHz) | NPRI : NSEC : NAUX | ISAT (A) | Size | fres (MHz) | Version | IR (A) | L (µH) | RDC max. (Ω) | VR (V (AC)) | VT (V (DC)) | Material | L (mm) | W (mm) | H (mm) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 750317406 | SPEC | 3 files | Active i| Production is active. Expected lifetime: >10 years. | MID-OLTI Offline Flyback Transformers for Texas Instruments | 120 - 566 V (DC) | 12 | 1.1 | 4 | 0.01 | 25 | 100 | 21:3:1:6 | 0.6 | EE20/10/6 | – | – | – | 600 | – | – | 4800 | – | 21.5 | 25 | 16 | THT | ||
 | 7447462221 | SPEC | 7 files | Active i| Production is active. Expected lifetime: >10 years. | WE-TI Radial Leaded Wire Wound Inductor | – | – | – | – | – | – | – | – | 0.5 | 5075 | 4.8 | Heat Shrinking Tube | 0.5 | 220 | 1.2 | – | – | – | 6 | 6 | 8.5 | THT | ||
 | 744862100 | SPEC | 8 files | Active i| Production is active. Expected lifetime: >10 years. | WE-TFC Common Mode Power Line Choke | – | – | – | – | – | – | – | – | – | UU 9.8 V | – | – | 0.45 | 10000 | 1.65 | 300 | 2500 | MnZn | 17 | 11.5 | 17 | THT |
| Samples |
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| Order Code | Datasheet | Simulation | Downloads | Status | Product series | VIN | VOut1 (V) | IOut1 (A) | VOut2 (V) | IOut2 (A) | Vaux (V) | fswitch (kHz) | NPRI : NSEC : NAUX | ISAT (A) | Size | fres (MHz) | Version | IR (A) | L (µH) | RDC max. (Ω) | VR (V (AC)) | VT (V (DC)) | Material | L (mm) | W (mm) | H (mm) | Mount | Samples |
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