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Texas Instruments UCC28742 | Demoboard PMP30831
Offline valley switching flyback reference design with multiple outputs
Overview
| Topology | Flyback Converter |
| Input voltage | 150-253 V |
| Output 1 | 24 V / 1.2 A |
| Output 2 | 8 V / 1 A |
| Output 3 | 18 V / 0.25 A |
| IC revision | B |
Description
This 42W multiple output power reference design supports AC/DC industrial power supplies with an AC/DC input voltage range of 150 VAC to 253 VAC. The design achieves a peak efficiency of 89% by using discontinuous conduction mode (DCM) valley-switching of our UCC28742 flyback controller.
Features
- AC input voltage range from 150V AC to 253V AC
- Delivers 42W output power over the entire operating voltage range
- Includes three outputs: 8V/18V/24V
- Peak power conversion efficiency of > 89%
Typical applications
- Industrial and Medical AC-to-DC Power Supplies, mart Electricity Meters, Bias Supply for UPS, Server PSU, etc. , Power Supply for Cable Modem, Television, Set Top Box, and Wireless Routers, AC-to-DC Power Supply for Appliances
More information
Products
Order Code | Datasheet | Simulation | Downloads | Status | Product series | C | Safety Class | dV/dt(V/µs) | DF @ 1 kHz(%) | RISO | Pitch(mm) | Packaging | IR(A) | L(mH) | RDC max.(mΩ) | VR(V (AC)) | VT(V (AC)) | Material | L(mm) | W(mm) | H(mm) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WCAP-FTX2 Film Capacitors, Across the mains, 100 nF | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-FTX2 Film Capacitors | Capacitance100 nF | Safety ClassX2 | Rate of Voltage Rise300 V/µs | Dissipation Factor0.1 % | Insulation Resistance30 GΩ | Pitch10 mm | PackagingBulk | – | – | – | Rated Voltage275 V (AC) | – | – | Length13 mm | Width7 mm | Height13 mm | MountBoxed THT | ||||
 | WE-CMB Common Mode Power Line Choke, –, – | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-CMB Common Mode Power Line Choke | – | – | – | – | – | – | – | Rated Current2 A | Inductance2.2 mH | DC Resistance70 mΩ | Rated Voltage250 V (AC) | Insulation Test Voltage1500 V (AC) | MaterialMnZn | Length17.5 mm | Width13 mm | Height22 mm | MountTHT |