This reference design features an LLC converter controlled by UCC25800-Q1 (open-loop LLC transformer driver for isolated bias supplies), operating with 9 V and generating three output voltages of 9.0 V with a maximum load current of 50 mA each. An air core transformer was used to avoid the core saturation in the presence of a strong external magnetic field.
| Output voltage options | PMP31054.1 | PMP31054.2 | PMP31054.3 |
|---|---|---|---|
| Vin (Min) (V) | 9 | 9 | 9 |
| Vin (Max) (V) | 9 | 9 | 9 |
| Vout (Nom) (V) | 9 | 9 | 9 |
| Iout (Max) (A) | .05 | .05 | .05 |
| Output Power (W) | .45 | .45 | .45 |
| Isolated/Non-Isolated | Isolated | Isolated | Isolated |
| Input Type | DC | DC | DC |
| Topology | Half Bridge- LLC | Half Bridge- LLC | Half Bridge- LLC |
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
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Test results for the reference design, including efficiency graphs, test prerequisites and more
Detailed schematic diagram for design layout and components
Complete listing of design components, reference designators, and manufacturers/part numbers
Detailed overview of design layout for component placement
Files used for 3D models or 2D drawings of IC components
Design file that contains information on physical board layer of design PCB
PCB layer plot file used for generating PCB design layout
Includes TI products in the design and potential alternatives.
| Type | Title | Date | ||
|---|---|---|---|---|
| Test report | LLC Conv. w/ Air-Core Transformer Ref. Des. (Anti-Tampering for E-Meter Apps) | PDF | HTML | Oct. 20, 2022 |
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