This design implements a three-phase solid-state transformer (SST) based on a silicon carbide (SiC) power module. Using a modular architecture allows for stacking multiple converter submodules in series to meet medium-voltage grid requirements. Using fast switching SiC devices enables the DC/AC stage to switch at 10kHz and the dual active bridge (DAB) isolation stage at 100kHz, which reduces the size of the high-frequency magnetic components and increases the overall power density. Inter-module communication provide the high isolation voltage levels required in medium-voltage end equipment. The cascaded topology distributes the grid voltage evenly across submodules, allowing the use of standard lower-voltage rated SiC devices while maintaining full medium-voltage operation.
| Output voltage options | TIDA-011012.1 | TIDA-011012.2 | TIDA-011012.3 | TIDA-011012.4 |
|---|---|---|---|---|
| Vin (Min) (V) | 800 | 1800 | 1300 | 2200 |
| Vin (Max) (V) | 1300 | 2200 | 1500 | 2200 |
| Vout (Nom) (V) | 2200 | 1500 | 2200 | 1300 |
| Iout (Max) (A) | 23 | 33 | 23 | 63 |
| Output Power (W) | 50600 | 49500 | 50600 | 81900 |
| Isolated/Non-Isolated | Non-Isolated | Isolated | Isolated | Non-Isolated |
| Input Type | AC | DC | DC | DC |
| Topology | Boost- PFC | Full Bridge- Phase Shifted | Full Bridge- Phase Shifted | Buck- PFC |
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| Top documentation | Type | Title | Format options | Date |
|---|---|---|---|---|
| * | Design guide | A 50kW SiC-Based Modular Solid-State Transformer for Medium-Voltage Applications Reference Design | PDF | HTML | Jun 4, 2026 |
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