| CPC H02M 3/1584 (2013.01) [H02M 1/0009 (2021.05); H02M 1/088 (2013.01); H02M 3/1586 (2021.05)] | 20 Claims |
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1. A power supply system apparatus comprising:
a plurality of converters each including a unit controller including a common controller and an individual analog controller,
wherein each of the plurality of converters includes
a plurality of power conversion circuits each including an inductor, a switching circuit, and the individual analog controller,
a common input terminal to which inputs of the plurality of power conversion circuits are connected in parallel, the common input terminal being connected to an input power supply,
a common output terminal to which outputs of the plurality of power conversion circuits are connected in parallel, the common output terminal being connected to a load, and
the common controller configured to output oscillation control signals to the plurality of power conversion circuits,
wherein the individual analog controller includes
a voltage feedback signal generator and an individual voltage feedback loop configured to detect an output voltage of the common output terminal to generate a voltage feedback signal and feed back the voltage feedback signal, and
a driver configured to drive a switching element in the switching circuit on the basis of the voltage feedback signal, and
wherein the unit controllers are configured to,
while performing feedback control using the individual voltage feedback loops,
perform master-slave control for synchronizing the oscillation control signals in such a manner that master control of one of the plurality of converters is performed and slave control of another one of the plurality of converters is performed, and
supply power to the load, while causing the plurality of converters to be synchronized with each other and performing a voltage conversion operation for converting a voltage of the input power supply using the plurality of power conversion circuits in the plurality of converters.
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