公开(公告)号：US20240291387A1

公开(公告)日：2024-08-29

申请号：US18437919

申请日：2024-02-09

申请人： STMICROELECTRONICS S.r.l.

发明人： Stefano PERROTTA ,  Salvatore Giuseppe PRIVITERA ,  Francesco PULVIRENTI

IPC分类号： H02M3/335 ,  H02M1/00 ,  H02M3/00 ,  H02M3/338

CPC分类号： H02M3/33523 ,  H02M1/0054 ,  H02M3/01 ,  H02M3/3384

摘要： Provided is a DC-DC converter with galvanic isolation comprising a resonant oscillator coupled to a primary winding of a galvanic isolation transformer. A rectifier is coupled to a secondary winding of the transformer to provide an output voltage. The DC-DC converter comprises a regulation loop configured to regulate an output voltage with respect to a reference voltage by controlling a current flowing in the resonant oscillator as a function of a result of a signal indicative of the comparison between the output voltage and the reference voltage. The resonant oscillator is configured to operate at a frequency, in particular tuned at sub-resonant point, in particular sub-harmonic frequency, below a resonance frequency of the resonant oscillator which maximizes a quality factor of the resonant oscillator, in particular below a resonance frequency of a LC tank circuit comprised in the resonant oscillator which maximizes a quality factor of the LC tank circuit.