DC-DC converter, DC-DC converter control unit, power supply, electronics and DC-DC converter control method

摘要

PROBLEM TO BE SOLVED: To provide a DC-DC converter in which switching loss can be reduced by synchronizing the on/off switching timing of step-up PWM control and the on/off switching timing of step-down PWM control, and to provide a controller of a DC-DC converter, a power supply, an electronic device and a control method of a DC-DC converter.;SOLUTION: When both step-up PWM control and step-down PWM control are performed, offset of on/off switching timing of step-up PWM control and offset of on/off switching timing of step-down PWM control are altered such that the offset of on/off switching timing of step-up PWM control becomes identical to the offset of on/off switching timing of step-down PWM control.;COPYRIGHT: (C)2006,JPO&NCIPI