| 摘要 |
The invention relates to a switched-mode power supply unit (100) for a computer or the like. The switched-mode power supply unit comprises at least one switching element (120) for switching a charging current for charging a storage element (130), at least one secondary output circuit, at least one controllable oscillator circuit (160) for providing a switching clock and at least one control circuit (150) for determining a switch-off time for the at least one switching element (120). In this arrangement, operation of the switched-mode power supply unit (100) involves a mean oscillator clock from the oscillator circuit (160) being regulated on the basis of a controlled variable (Vcontrol) from the secondary output circuit (140) and a switch-on time for the at least one switching element (120) being determined on the basis of the mean oscillator clock and a random deviation. The invention likewise relates to a method of operation for such a switched-mode power supply unit (100) and to the use of such a switched-mode power supply unit (100) in a computer. |
