Switching power supply, in particular for an audio amplifier and system with the switched-mode power supply and the audio amplifier

摘要

Switching power supplies - also called switch mode power supplies in English - are modules that convert an input voltage into a desired output voltage. There is a switching power supply 2 for an audio amplifier 3 with an input voltage side 5 for taking over an input voltage UE, with an output voltage side 6 for outputting an output voltage UA, with a transformer device 11, wherein the input voltage side 5 with a primary side P and the output voltage side 6 with a secondary side S the transformer device 11 are connected to at least one power switch S1, S2, wherein the at least one power switch S1, S2 arranged in series with the primary side P and / or to the secondary side S of the transformer device 11, and with a control device 9 for controlling the at least a power switch S1, S2, wherein the control device 9 is designed to control the power switch S1, S2 such that the output power is limited to the output voltage side 6, wherein in a protective mode of the switching power supply 2, the output power to a permanent tion is limited and in a normal mode of the switching power supply 2, the output power is limited to a short-term power, the short-term power is higher than the continuous power is formed.