Patent ID: 9727125
Date: 2017-08-08
CPC Classifications: G06F,H02M

Claim:
1. A power supply system comprising: a plurality of power supply circuits connected to a common output node, each of the plurality of power supply circuits being a direct current (DC) to DC converter and comprising a transformer, a primary full-bridge switching circuit and a secondary full-bridge switching circuit; and a control unit configured to change a phase difference between switching timing of the primary full-bridge switching circuit and switching timing of the secondary full-bridge switching circuit, of each of the plurality of power supply circuits such that an output value at the output node follows an output target value at the output node, wherein the control unit is further configured to change the phase difference of part of the plurality of power supply circuits such that the output value approaches the output target value when a deviation between the output value and the output target value is less than or equal to a predetermined value and the phase difference of each of the plurality of power supply circuits has a same value.