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Texas Instruments UCC28742 | Demoboard PMP21462
12-Watt Magnetically Resistant Quasi-Resonant Flyback Reference Design
Overview
| Topology | Flyback Converter |
| Input voltage | 90-490 V |
| Switching frequency | 80-130 kHz |
| Output 1 | 4 V / 2 A |
| Output 2 | 10 V / 0.4 A |
| IC revision | B |
Description
Customer specific quasi-resonant flybackThis reference design is a quasi-resonant flyback developed to be resistant to large magnetic fields near the transformer. It has a regulated 4 Volt output that can handle up to 2 A of current and secondary 10 V output that can handle 0.4 A.
Features
- 90 VAC to 490 VAC input to 4 V/2 A isolated output
- Secondary output of 10 V/ 400 mA
- Iron Powder Transformer for improved magnetic resistance
- Topology designs to run at a low frequency to further increase magnetic resistance
Typical applications
- Industrial and Medical AC-to-DC Power Supplies
- Smart Electricity Meters / Bias Supply for UPS, Server PSU
- AC-to-DC Power Supply for Appliances
- Power Supply for Cable Modem, Television, Set-Top Box, and Wireless Routers
More information
Products
| Order Code | Datasheet | Simulation | Downloads | Product series | ISAT (A) | fres (MHz) | IR (A) | L (µH) | RDC max. (Ω) | VR (V (AC)) | VT (V (AC)) | Material | L (mm) | W (mm) | H (mm) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 768772221 | SPEC | 8 files | WE-TI HV Radial Leaded Wire Wound Inductor (High Voltage) | 1.3 | 3.7 | 0.9 | 220 | 0.6 | – | – | – | 7.8 | 7.8 | 9.5 | THT | ||
 | 744821150 | SPEC | 9 files | WE-CMB Common Mode Power Line Choke | – | – | 1 | 5000 | 0.22 | 250 | 1500 | MnZn | 15 | 7.8 | 18 | THT | ||
| 750317656 | SPEC | – | – | Transformer | – | – | – | – | – | – | – | – | – | – | – | – |
| Samples |
|---|
| Order Code | Datasheet | Simulation | Downloads | Product series | ISAT (A) | fres (MHz) | IR (A) | L (µH) | RDC max. (Ω) | VR (V (AC)) | VT (V (AC)) | Material | L (mm) | W (mm) | H (mm) | Mount | Samples |
|---|