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Overview
| Topology | Flyback Converter |
| Input voltage | 120-437 V |
| Output 1 | 5 V / 2 A |
| Output 2 | 8 V / 0.3 A |
| IC revision | B |
Description
The PMP30285 reference design uses the UCC28740 flyback controller to generate two outputs (5V @ 2A / 8V @ 0.3A) from an 120VAC to 437VAC input. The negative terminal of the 5V output is connected to the primary side (LINE). A transformer with a common mode cancellation winding is used to lower the EMI. The UCC28740 uses an optical coupler to regulate the output and to improve transient response. The valley-switching technique reduces switching losses and keeps the efficiency high.
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Product series | VIN | VOut1 (V) | IOut1 (A) | VOut2 (V) | IOut2 (mA) | Vaux (V) | fswitch (kHz) | NPRI : NSEC : NAUX | ISAT (mA) | Size | fres (MHz) | IR (A) | L (mH) | RDC max. (mΩ) | VR (V (AC)) | VT (V (AC)) | Material | L (mm) | W (mm) | H (mm) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 750317049 | SPEC | 4 files | MID-OLTI Offline Flyback Transformers for Texas Instruments | 120 - 438 V (AC) | 5 | 2 | 8 | 300 | 19 | 70 | 15 : 1.5 : 1 : 3.5 | 950 | EE20/10/6 | – | – | 1.1 | – | – | 4000 | – | 22.2 | 25 | 16 | THT | ||
 | 744822110 | SPEC | 10 files | WE-CMB Common Mode Power Line Choke | – | – | – | – | – | – | – | – | – | Type S | – | 1 | 10 | 360 | 250 | 1500 | MnZn | 17.5 | 13 | 22 | THT | ||
 | 768772681 | SPEC | 8 files | WE-TI HV Radial Leaded Wire Wound Inductor (High Voltage) | – | – | – | – | – | – | – | – | 760 | 8095 | 2.5 | 0.52 | 0.68 | 1680 | – | – | – | 7.8 | 7.8 | 9.5 | THT |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Product series | VIN | VOut1 (V) | IOut1 (A) | VOut2 (V) | IOut2 (mA) | Vaux (V) | fswitch (kHz) | NPRI : NSEC : NAUX | ISAT (mA) | Size | fres (MHz) | IR (A) | L (mH) | RDC max. (mΩ) | VR (V (AC)) | VT (V (AC)) | Material | L (mm) | W (mm) | H (mm) | Mount | Samples |
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