Universal AC Input, Dual Output (12V@30mA, 3.3V@400mA) Isolated Flyback Converter Reference Design
PMP10143
(ACTIVE)
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Key Document
Description
The PMP10143 reference design demonstrates the use of UCC28880 high-voltage switcher to design an Offline Isolated Flyback converter that can supply greater than 100mA output current. Using 2ndary side feedback control, the design delivers a tighly regulated 3.3V/400mA output that can be used to bias micontrollers and DSPs. In addition the design also provides a 2nd output rail of 12V/30mA that can be used to supply relays and other analog devices.
Features
- UCC28880-based Isolated Flyback converter
- Design delivers >100mA output
- Tightly regulated 3.3V output (<1%, at 25C) using 2ndary side opto-feedback
- >74% efficiency at full-load on both rails
- Flyback transformer designed for basic isolation
- Short-circuit withstand capability of 3 seconds
- This design is tested and includes test results and CAD files
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Schematic/Block Diagram
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Design Guide
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TI Devices (2)
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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.
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Technical Documents
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User guides (1)
| Title | Type | Size (KB) | Date |
| | PDF | 918 |
23 Sep 2015
|
Design files (4)
| | ZIP | 96 |
23 Sep 2015
|
| | PDF | 208 |
23 Sep 2015
|
| | PDF | 112 |
23 Sep 2015
|
| | PDF | 253 |
23 Sep 2015
|
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