US 11,682,966 B2
Pipeline resonant and non-resonant switched capacitor converter circuit
Kuo-Chi Liu, Hsinchu (TW); Ta-Yung Yang, Taoyuan (TW); and Chung-Lung Pai, Hsinchu (TW)
Assigned to RICHTEK TECHNOLOGY CORPORATION, Zhubei (TW)
Filed by Richtek Technology Corporation, Zhubei (TW)
Filed on May 20, 2021, as Appl. No. 17/325,689.
Claims priority of provisional application 63/027,818, filed on May 20, 2020.
Claims priority of provisional application 63/029,714, filed on May 26, 2020.
Claims priority of provisional application 63/036,407, filed on Jun. 8, 2020.
Claims priority of provisional application 63/041,135, filed on Jun. 19, 2020.
Claims priority of provisional application 63/056,544, filed on Jul. 24, 2020.
Claims priority of provisional application 63/108,455, filed on Nov. 2, 2020.
Claims priority of provisional application 63/118,615, filed on Nov. 25, 2020.
Claims priority of provisional application 63/153,401, filed on Feb. 25, 2021.
Claims priority of provisional application 63/153,404, filed on Feb. 25, 2021.
Claims priority of provisional application 63/166,299, filed on Mar. 26, 2021.
Prior Publication US 2021/0367511 A1, Nov. 25, 2021
Int. Cl. H02M 3/00 (2006.01); H02M 3/07 (2006.01)
CPC H02M 3/07 (2013.01) [H02M 3/01 (2021.05)] 41 Claims
OG exemplary drawing
 
1. A switched capacitor converter circuit, which is configured to operably convert a first power to a second power or to operably convert the second power to the first power; the switched capacitor converter circuit comprising:
at least one switching converter; and
a control circuit, which is configured to operably control the switching converter;
wherein the at least one switching converter includes:
a plurality of capacitors; and
a plurality of switches, which are controlled by the control circuit to operably and periodically switch the plurality of capacitors according to a plurality of cycle periods;
wherein during a first period within one cycle period, the plurality of switches are configured to operably control at least two of the plurality of capacitors to be electrically connected in series between the first power and the second power, and the plurality of switches are configured to operably control at least one of the plurality of capacitors to be electrically connected in parallel to the second power;
wherein during a second period within the one cycle period, the plurality of switches are configured to operably control at least two of the plurality of capacitors to be electrically connected in series between the second power and a ground voltage level, and the plurality of switches are configured to operably control at least one of the plurality of capacitors to be electrically connected in parallel to the second power;
wherein the capacitor electrically connected in parallel to the second power during the first period is different from the capacitor electrically connected in parallel to the second power during the second period;
whereby power conversion between the first power and the second power is achieved during the plurality of cycle periods.