This reference design uses the TPS54560B in an inverting buck-boost topology to generate a -40-V output from a +5-V input. An auxiliary winding generates a +40-V output with reference to the same ground. For applications needing a positive and negative voltage, the buck topology provides a low-noise output with a minimal component count.
| Output voltage options | PMP22343.1 | PMP22343.2 |
|---|---|---|
| Vin (Min) (V) | 4.9 | 4.9 |
| Vin (Max) (V) | 5.1 | 5.1 |
| Vout (Nom) (V) | 40 | -40 |
| Iout (Max) (A) | .125 | -.125 |
| Output Power (W) | 5 | 5 |
| Isolated/Non-Isolated | Non-Isolated | Non-Isolated |
| Input Type | DC | DC |
| Topology | Buck Boost- Inverting | Buck Boost- Inverting |
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Test results for the reference design, including efficiency graphs, test prerequisites and more
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| Type | Title | Date | ||
|---|---|---|---|---|
| Test report | +/-40-V Inverting Buck-Boost With Auxiliary Output Reference Design | Feb. 03, 2020 |
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