This inverting buck-boost reference design uses LM5146-Q1 to generate -8 V out of telecom input +9 V to +56 V. By topology, the controller is negative referenced so a level shifter has been added to provide ENABLE function. Switching frequency of 400 kHz is a trade-off between switching losses and a reasonable board size.
| Output voltage options | PMP30916.1 |
|---|---|
| Vin (Min) (V) | 9 |
| Vin (Max) (V) | 56 |
| Vout (Nom) (V) | -8 |
| Iout (Max) (A) | 2 |
| Output Power (W) | 16 |
| Isolated/Non-Isolated | Non-Isolated |
| Input Type | DC |
| Topology | Buck Boost- Inverting |
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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| Type | Title | Date | ||
|---|---|---|---|---|
| Test report | –8-V Inverting Buck-Boost Reference Design | PDF | HTML | May 13, 2022 |
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