Hi
UCC28063 is designing a circuit with 420V output.(Typ. 270W, Peak 460W))
Request circuit review.
There seems to be a lot of noise in the current GND pattern.
Since the concept of this circuit is small, I want to design it to 20uF or less. In the current state, when the load is increased by about 130 W, ic is dead. Could it be improved? Could it be due to the noise of this pattern?
Adding an output capacitor in the circuit resulted in a normal output. But I want to design with Cap-less.
Schematic diagrams and patterns are also attached.270W_REV0.1_PCB TOP PCB BOTTOM PDF_170704.pdf (2).pdfPCB9_MPN(269W)_회로도 (2).pdf