High Light-Load Efficient 120VAC Input, 25W/5VDC Reference Design with 4 POL Outputs
PMP11180
(ACTIVE)
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Key Document
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
- 25-W/5-VDC output power rated at 5 A
- Includes 3.3-V/2-A, 2.5-V/2-A, 1.5-V/3-A, 1-V/5-A outputs
- Flyback output (5 V) peak efficiency greater than 85%
- Flyback output dissipates 61 mW at no-load
- Helps meeting Energy Star requirements
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Schematic/Block Diagram
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Design Guide
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TI Devices (5)
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CAD/CAE symbols
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Texas Instruments and Accelerated Designs, Inc. have collaborated together to provide TI customers with schematic symbols and PCB layout footprints for TI products.
Step 1: Download and install the free download.
Step 2: Download the Symbol and Footprint from the CAD.bxl file table.
Step 3: Open the .bxl file with the Ultra Librarian software.
You can always access the complete CAD/CAE Symbols database at http://webench.ti.com/cad/
Both PCB footprints and schematic symbols are available for download in a vendor neutral format, which can then be exported to the leading EDA CAD/CAE design tools using the Ultra Librarian Reader. The reader is available as a (free download.).
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Technical Documents
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User guides (1)
| Title | Type | Size (KB) | Date |
| | PDF | 5265 |
19 Jan 2016
|
Design files (4)
| | ZIP | 386 |
19 Jan 2016
|
| | PDF | 79 |
19 Jan 2016
|
| | PDF | 103 |
19 Jan 2016
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| | PDF | 199 |
19 Jan 2016
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