This reference design is an isolated open-loop push-pull with “cascode” FETs that finds its typical application in isolated gate drive supply. The cascode connection extends the input voltage range of SN6505B from 5 V to 24 V, and two outputs supply 15 V at 120 mA and 5 V at 350 mA. Its 2-mm transformer makes the solution ultra-thin.
| Output voltage options | PMP30555.1 | PMP30555.2 |
|---|---|---|
| Vin (Min) (V) | 21.6 | 21.6 |
| Vin (Max) (V) | 26.4 | 26.4 |
| Vout (Nom) (V) | 5 | 15 |
| Iout (Max) (A) | .35 | .12 |
| Output Power (W) | 1.75 | 1.8 |
| Isolated/Non-Isolated | Isolated | Isolated |
| Input Type | DC | DC |
| Topology | Forward- Push Pull | Forward- Push Pull |
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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 | 3.5-W Isolated Push-Pull Reference Design for Auxiliary Power Supply | May 06, 2019 |
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