This reference design uses a single UCC25800-Q1 to drive two LLC transformers. Each isolated output feeds into a TPS7A39 dual-channel positive- and negative-output LDO. PMP23124 can be used to bias two wideband-gap FETs that require a positive and negative voltage to drive. Each output can be loaded to 2.8 W.
| Output voltage options | PMP23124.1 | PMP23124.2 | PMP23124.3 |
|---|---|---|---|
| Vin (Min) (V) | 15 | 20 | 20 |
| Vin (Max) (V) | 15 | 30 | 30 |
| Vout (Nom) (V) | 20 | 15 | -5 |
| Iout (Max) (A) | .15 | .15 | .15 |
| Output Power (W) | 3 | 2.25 | .75 |
| Isolated/Non-Isolated | Isolated | Non-Isolated | Non-Isolated |
| Input Type | DC | DC | DC |
| Topology | Half Bridge- LLC | Linear Regulator | Linear Regulator |
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
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Design file that contains information on physical board layer of design PCB
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Includes TI products in the design and potential alternatives.
| Type | Title | Date | ||
|---|---|---|---|---|
| Test report | Half-Bridge LLC Dual-Output Bias-Supply Pair Reference Design (Rev. A) | PDF | HTML | May 10, 2022 |
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