US 11,916,484 B2
Multiphase DC-DC power converter
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. 17/470,833.
Application 17/470,833 is a continuation of application No. PCT/JP2019/047983, filed on Dec. 9, 2019.
Claims priority of application No. 2019-046656 (JP), filed on Mar. 14, 2019.
Prior Publication US 2021/0408914 A1, Dec. 30, 2021
Int. Cl. H02M 3/158 (2006.01); H02M 1/00 (2006.01)
CPC H02M 3/1586 (2021.05) [H02M 1/0025 (2021.05); H02M 1/0009 (2021.05)] 21 Claims
OG exemplary drawing
 
1. A system switching power supply device comprising:
a plurality of power converters, each including an inductor, a switching circuit, and an individual analog controller;
a common controller configured to output oscillation control signals to the plurality of power converters; and
a common output terminal that is connected to output parts of the plurality of power converters in parallel and connected to a load,
wherein
the individual analog controller includes
an analog electronic circuit,
a feedback signal generator configured to detect a state of the output part of the power converter and generate a feedback signal fed back to the power converter, and
a driver configured to drive a switch of the switching circuit, and
wherein
the common controller includes a digital electronic circuit that is configured to perform programmable arithmetic processing, and
the feedback signal generator includes
a common node that connects the plurality of power converters in parallel, and
a common signal generator configured to generate a common bus signal to flow to the common node,
wherein the driver is configured to drive the switch of the switching circuit based on the feedback signal and one of the oscillation control signals.