US 12,113,443 B2
Multi-converter power supply system
Tatsuya Hosotani, Nagaokakyo (JP); and Norikazu Sakamoto, Nagaokakyo (JP)
Assigned to Murata Manufacturing Co., Ltd., Kyoto-fu (JP)
Filed by Murata Manufacturing Co., Ltd., Kyoto-fu (JP)
Filed on Sep. 20, 2022, as Appl. No. 17/933,625.
Application 17/933,625 is a continuation of application No. PCT/JP2020/039760, filed on Oct. 22, 2020.
Claims priority of application No. 2020-055278 (JP), filed on Mar. 26, 2020.
Prior Publication US 2023/0016857 A1, Jan. 19, 2023
Int. Cl. H02M 3/158 (2006.01); H02M 1/00 (2007.01)
CPC H02M 3/1584 (2013.01) [H02M 1/0009 (2021.05)] 20 Claims
OG exemplary drawing
 
1. A multi-converter power supply system comprising:
a plurality of cell converters each including a switching element, a switching control circuit, an individual inductor with a first end connected to an output of the switching element, and an individual output terminal connected to a second end of the individual inductor;
a common node to which the individual output terminal of each of the plurality of cell converters is connected;
a current waveform signal generation circuit configured to generate a current waveform signal corresponding to a current waveform flowing through the individual inductor;
a current average signal generation circuit configured to generate a current average signal by averaging temporal changes that the current waveform signal has in a switching period of the switching control circuit; and
an instrumentation amplifier configured to receive input of a current common signal obtained from the common node and the current average signal and configured to generate an individual current feedback signal to be fed back to the switching control circuit.