| 摘要 |
Provided is a DC/DC converter (101) for a multi-phase switching power supply device including a plurality of DC/DC converters (1, 2, 3) including a master DC/DC converter (1) and a plurality of slave DC/DC converters (2, 3) that are connected in parallel to each other and operate in different phases. The DC/DC converter includes: first and second terminals to cascade the plurality of DC/DC converters (101) in a line; a phase detector (102) that detects the number of operating converters in the switching power supply device and the phases of the plurality of DC/DC converters, on the basis of a current input to the first terminal and a current output from the second terminal; a phase holder (103) that holds the detected phases and outputs a phase holding signal; and a clock generator (104) that selects a clock corresponding to the phase of a host converter from multi-phase clocks, on the basis of the phase holding signal, and outputs the selected clock. The DC/DC converter (101) performs a switching operation on the basis of the selected clock. |
