1results about How to "Extended output voltage range" patented technology

The utility model discloses a kind of stable voltage high-efficiency switching power supply circuit, it is related to switching power supply technical field, including drive module, drive first conversion module to the direct current electric energy of power module access carries out high-frequency isolation voltage transformation and rectification filtering processing, provides stable voltage for output module, by protection control module when detecting that first conversion module appears over temperature, will control second conversion module instead of first conversion module and carry out high-frequency isolation voltage transformation and rectification filtering processing, when required stable voltage is greater than the maximum stable voltage that first conversion module can provide, output detection module will control second conversion module and carry out secondary isolation voltage transformation processing to the electric energy that first conversion module isolation voltage transformation output, again rectification filtering processing is carried out.The utility model stable voltage high-efficiency switching power supply circuit can maintain stable voltage output, and avoid first conversion module damage, can also improve output stable voltage value, improve output voltage range.