| 摘要 |
PROBLEM TO BE SOLVED: To perform optimal control following up maximum conversion efficiency even in the case where a voltage difference between a primary-side DC voltage and a secondary-side DC voltage is great or under a light load, in a DC/DC converter.SOLUTION: In a control device 100 for the DC/DC converter, a phase difference &phgr; between drive signals S1p-S6p for controlling primary-side switches 61-66 and drive signals S1s-S6s for controlling secondary-side switches 91-96 is controlled by a phase control section 103. At the same time, primary-side detection power w1 and secondary-side detection power w2 are calculated by a loss calculation section 101, and a duty control section 102 increases/decreases a duty δp of the primary-side switches 61-66 and a duty δs of the secondary-side switches 91-96 so as to minimize a difference between the primary-side detection power w1 and the secondary-side detection power w2. |
