US 12,294,297 B2
Charge-pump based AC-DC power converter with power factor correction and optimized current paths
Ahmed Morsi Ammar, Kongens Lyngby (DK); Yasser A. A. Nour, Kongens Lyngby (DK); Arnold Knott, Kongens Lyngby (DK); and Frederik Monrad Spliid, Kongens Lyngby (DK)
Assigned to DANMARKS TEKNISKE UNIVERSITET, Kongens Lyngby (DK)
Appl. No. 18/008,599
Filed by DANMARKS TEKNISKE UNIVERSITET, Kongens Lyngby (DK)
PCT Filed Jun. 4, 2021, PCT No. PCT/EP2021/065028
§ 371(c)(1), (2) Date Dec. 6, 2022,
PCT Pub. No. WO2021/249888, PCT Pub. Date Dec. 16, 2021.
Claims priority of application No. 20179423 (EP), filed on Jun. 11, 2020.
Prior Publication US 2023/0253876 A1, Aug. 10, 2023
Int. Cl. H02M 1/42 (2007.01); H02M 3/07 (2006.01); H02M 3/335 (2006.01)
CPC H02M 1/4241 (2013.01) [H02M 3/07 (2013.01); H02M 3/33571 (2021.05)] 15 Claims
OG exemplary drawing
 
1. An AC-DC power converter comprising:
an AC rectification circuit configured to convert an AC line voltage into a rectified line voltage;
a charge-pump-based power factor correction sub-converter configured to provide a DC-bus supply voltage;
a resonant sub-converter configured to convert the DC-bus supply voltage to a DC output voltage or DC output current, the resonant sub-converter comprising:
a resonant tank configured to convert the DC-bus supply voltage to a resonant voltage or current;
an output rectification circuit configured to generate the DC output voltage or DC output current from the resonant voltage or current to supply a converter load,
a controllable switch network shared by the charge-pump-based power factor correction sub-converter and the resonant sub-converter,
wherein the resonant tank is decoupled from the charge-pump-based power factor correction sub-converter, wherein the AC-DC power converter is configured to operate the resonant tank independently of a power factor correction operation of the charge-pump-based power factor correction sub-converter,
wherein the controllable switch network comprises a high-side switch (QHS) and a low-side switch (QLS) in a half-bridge bridge configuration,
wherein the charge-pump-based power factor correction sub-converter comprises a charge pump rectifying element (DP) connected between the rectified line voltage and the high-side switch (QHS).