ZHCSKB9Q December 1999 – October 2019 UCC1895 , UCC2895 , UCC3895
PRODUCTION DATA.
The phase-shifted full-bridge converter topology is well suited to high-power server applications. This is because the phase-shifted, full-bridge converter can obtain zero-voltage switching on the primary side of the converter, reducing switching losses and EMI and increasing overall efficiency. This is a review of the design of a 600-W, phase-shifted, full-bridge converter for one of these power systems using TI's UCC3895 device. The review is based on typical values. In a production design, the values may need to be modified for worst-case conditions.
NOTE
FSW refers to the switching frequency applied to the power transformer. The oscillator on the UCC2895 is set to 2 × FSW. The output inductor also experiences a switching frequency which is 2 × FSW.