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1 at 90-V ac input (again, the output current is 0.32 A). For both images, Ch1 is the VDS waveform of the MOSFET, and Ch2 is the PFC output waveform. Figure 3. PFC Output Waveforms at 90-V AC Input

3 SLUA587CMarch

2011 Using an External Soft-Start Circuit for UCC28060/61 Submit Documentation Feedback ? 2011,........