Switch Mode Transformers (switching transformers) are used mainly in switching power supplies and DC-DC converters. They provide a storage element for transferring energy from input to output in discrete packets as required in switching power supplies, regulators and converters. Switch mode transformers have several basic topologies: push-pull, flyback, boost, forward, buck and bridge. Push-pull transformers are used in push-pull configuration circuits such as power supplies. Flyback transformers use the flayback or kickback of an inductor to convert an input voltage to a desired output voltage. The input voltage or charging cycle produces energy which is stored in the inductor. The input energy or discharge cycle is then transferred to the output. Boost or step-up switch mode transformers convert a lower DC input voltage to a higher DC output voltage of the same polarity. Buck or step-down converters are used to convert a higher DC input voltage to a lower DC output voltage of the same polarity. Forward converters are similar to buck-boost converters, but use a transformer to store energy and provide isolation between the input and output. The difference between flayback and forward transformers is in the way the energy transfer takes place. Switch mode transformers with a half-bridge and full-bridge output configuration are also available.
| Product families | 1. Planar ✉ | 2. SMPS ✉ |
| Product Series | 1. TPER14 ✉ | 2. TP14 ✉ | 3. TP18 ✉ |
| 4. TP20A ✉ | 5. TP20B ✉ | 6. TP25D ✉ | |
| 7. TP25F ✉ | 8. TP30 ✉ | 9. PE20 ✉ |
| Product Series | 1. Converter Transformer ✉ | 2. SMPS ✉ | 3. STEFD ✉ |
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