Patent ID: 11916484
Assignee: MURATA MANUFACTURING CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 20:
21. 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,
a common signal generator configured to generate a common bus signal to flow to the common node,
an individual current signal generator configured to generate an individual current signal based on current of the inductor of the power converter, and
an individual current feedback signal generator configured to generate an individual current feedback signal on the basis of a difference between the individual current signal and the common bus signal and output the individual current feedback signal as the feedback signal, and

the common signal generator is configured to generate the common bus signal on the basis of the individual current signal for the power converter.