US 11,855,541 B2
System power supply device with control for switching the number of power conversion units
Norikazu Sakamoto, Nagaokakyo (JP); and Tatsuya Hosotani, Nagaokakyo (JP)
Assigned to Murata Manufacturing Co., Ltd., Kyoto-fu (JP)
Filed by Murata Manufacturing Co., Ltd., Kyoto-fu (JP)
Filed on Sep. 9, 2021, as Appl. No. 17/470,800.
Application 17/470,800 is a continuation of application No. PCT/JP2019/048098, filed on Dec. 9, 2019.
Claims priority of application No. 2019-046655 (JP), filed on Mar. 14, 2019.
Prior Publication US 2021/0408916 A1, Dec. 30, 2021
Int. Cl. H02M 3/335 (2006.01); H02M 1/00 (2006.01); H02M 3/158 (2006.01)
CPC H02M 3/33507 (2013.01) [H02M 1/0058 (2021.05); H02M 3/1584 (2013.01); H02M 3/33569 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A system power supply device comprising:
a plurality of power converters, each including an inductor, a switching circuit, an individual analog controller, and a feedback signal generating circuit;
a common controller configured to output control signals to the plurality of power converters;
a common output terminal that is connected to output parts of the plurality of power converters in parallel; and
operating number signal generating circuits configured to generate an operating number signal on the basis of individual current signals based on current flowing in the inductors of the plurality of power converters and output the operating number signal to the common controller,
wherein
each of the feedback signal generating circuits of the plurality of power converters is configured to provide a composite feedback signal to the respective individual analog controller based on a voltage feedback signal and a current feedback signal,
the common controller is configured to set operations of the individual analog controllers of the plurality of power converters on the basis of the operating number signal and output the control signals including settings of operation modes of the individual analog controllers, and
an operating number of the plurality of power converters that are operating is switched in accordance with an operation mode and power consumption of a load connected to the common output terminal.