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Texas Instruments UCC28740DR | Demoboard PMP11180
High Light-Load Efficient 120VAC Input, 25W/5VDC Reference Design with 4 POL Outputs
Overview
| Topology | Flyback Converter |
| Input voltage | 90-132 V |
| Output 1 | 5 V / 5 A |
| IC revision | A |
Description
This 25-W design uses the UCC28740 in a flyback topology to minimize no-load standby power and the UCC24636 synchronous rectifier controller to minimize power MOSFET body-diode conduction times. The design also features point-of-load converters from the main 5V rail that implement an energy-saving Ecomode. All of the devices within the design work together to improve light-load efficiency to help meet agency approvals.
Features
Remarks- Schematic and BOM is added with EVM pdf
25-W/5-VDC output power rated at 5 AIncludes 3.3-V/2-A, 2.5-V/2-A, 1.5-V/3-A, 1-V/5-A outputsFlyback output (5 V) peak efficiency greater than 85%Flyback output dissipates 61 mW at no-loadHelps meeting Energy Star requirements
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, 220 nF | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWCAP-FTX2 Film Capacitors | Capacitance220 nF | Safety ClassX2 | Rate of Voltage Rise180 V/µs | Dissipation Factor0.1 % | Insulation Resistance30 GΩ | Pitch15 mm | PackagingCarton | – | – | – | Rated Voltage275 V (AC) | – | – | Length18 mm | Width6 mm | Height11.5 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 Current0.7 A | Inductance10 mH | DC Resistance350 mΩ | Rated Voltage250 V (AC) | Insulation Test Voltage1500 V (AC) | MaterialMnZn | Length15 mm | Width7.5 mm | Height18 mm | MountTHT |