Hi FvM,
First of all,thank you for your reading and helping
My colleague designed a SMPS, its input voltage rang is 90VAC to 265Vac, output voltage is 54vDC, and load current is 1.6A. The circuit of the SMPS is composed by two stages, a front-end PFC implementing the L6563S and a LLC half-bridge DC/DC converter, which using the controller, L6599.
As you know, the PFC output voltage has a 100Hz ripple, which is about 5V to 10v.
As I have not experience in designing a LLC half-bridge, so I would like to know whether the LLC converter can completely deal with the 100HZ ripple problem?
If you designed LLC converter, could you tell me whether the output ripple have 100HZ ripple and its peak-peak voltage amplitude?
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54V/1.6A output ripple voltage