FAN6300AMY Quasi-Resonant PWM Controller onsemi FAN6300AMY is a highly integrated Quasi-Resonant Current Mode PWM controller that provides several features to enhance the performance of flyback converters. The FAN6300AMY Quasi-Resonant Current Mode PWM Controller has features that include high voltage startup, quasi resonant operation, cycle-by-cycle current limiting, peak-current-mode control, leading-edge blanking (LEB), internal 5ms soft-start, over power compensation, low frequency operation (below 100kHz) and more. This onsemi Quasi-Resonant Current Mode Controller can be used in applications such as AC/DC NB adapters and open-frame SMPS.