TIDT284 May 2022
This reference design is an isolated push-pull, where cascode SOT-23 FETs are added for the 24-V version. This cascode connection extends input voltage range to 24-VIN ±4% into 6 V or 12 V unregulated (open loop). With a selection of four different transformers, it is possible to get 6 V (at 300 mA) or 12 V (at 150 mA) from a 3.8-V or 24-V source.