A SEPIC converter is used to charge a load capacitor (up to 15000uF) up to 400V/420V (selectable). The input voltage range is 15V +/-10% and the constant output charging current 80mA. The multiplied SEPIC topology has several advantages compared to Boost + charge pump mainly thanks to reduce peak (...)
主要特色
Huge voltage ratio possible by multiplied single-stage SEPIC (15Vin to 420Vout)
No spikes on switch-nodes compared to flyback solution
Good efficiency curve between 50Vout and 420Vout in the range of 80% to 87%
Two active loops: CV and CC avoid overvoltage in case of load disconnection
