The TIDA-01495 is a low profile (17mm height), 94.1% peak efficiency, high power density, universal input, 24VDC, 480W output, consumer AC/DC power supply reference design. The circuit consists of a front-end two phase interleaved transition mode (TM) power factor correction (PFC) based on the UCC28063A, which minimises the PFC inductor dimensions and reduces the EMI filter requirements.
The HB-LLC isolated DC/DC stage is controlled by the UCC256301 hybrid hysteritic control LLC controller, which ensures fast transient response resulting in reduced PFC bulk and output capacitor dimension.
Phase shedding in the PFC stage and the advance burst mode optimisation feature in the LLC stage help in meeting high efficiency at 5% load (230VAC). The UCC24612 multi-mode synchronous rectifier controller realises proportional gate drive, reducing the conduction losses in the output rectifier of the LLC stage, enabling high efficiency.
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