Patent ID: 9484817
Filing Date: 2016-11-01
CPC Classification: H02M

Claim Text:
1. A two- or more-channel digitally controlled step-down DC/DC converter using fixed ON-time nonlinear control, comprising: switching power supply circuits of first to N-th (where N is an integer not less than 2) channels, the switching power supply circuits being connected to an input terminal in parallel; A/D converters for converting output voltages outputted from output terminals of the switching power supply circuits of the respective channels to digital signals; and an arithmetic processing unit receiving the digital signals converted by the A/D converters, wherein each of the switching power supply circuit includes the arithmetic processing unit is configured to measure a time interval between a time at which the switching element of the switching power supply circuit of the first channel has been turned ON and a time at which the switching element of the switching power supply circuit of the relevant one of the second to N-th channels has been turned ON, in case where the arithmetic processing unit determines that the switching element of the switching power supply circuit of each of the second to N-th channels has been turned ON, and,