Universal AC DLP Power Supply (10V @ 6A)
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This reference design provides 400W of power from a universal AC input with power factor correction. The UCC28019A controls a PFC boost front end, while the UCC25600 LLC resonant-half bridge converts the PFC output to isolated 40V, 33V, and 27V outputs. The total system efficiency is over 89% with a 230VAC input and over 85% with an 115VAC input.