Patent ID: 9160243
Filing Date: 2015-10-13
Classification: H02M

Abstract:
1. A control circuit for an interleaved power supply, the interleaved power supply comprising: a master converter including a master switch configured to perform switching operation; and a slave converter including a slave switch configured to perform switching operation while maintaining a predetermined phase difference with respect to the switching operation of the master switch, the master converter and the slave converter having a master-slave relationship, the control circuit being configured to control the switching operation of the slave switch, the control circuit comprising: a clock generator configured to generate a clock pulse having a predetermined frequency; a signal doubler configured to generate a master switch on-interval pulse signal indicating information concerning an on-interval of the master switch based on the clock pulse and a master drive pulse signal that switch-drives the master switch of the master converter, and generate a doubled duty pulse signal having a duty that is double that of the master switch on-interval pulse signal; an edge pulse generator configured to generate a first edge pulse signal based on the master drive pulse signal, and generate a second edge pulse signal based on the doubled duty pulse signal; and a slave drive pulse signal generator configured to generate, based on the first edge pulse signal and the second edge pulse signal, a slave drive pulse signal that switch-drives the slave switch so that an on-interval of the slave switch is identical to an on-interval of the master switch.