| 主权项 |
1. A power conversion apparatus, comprising:
a flyback power conversion circuit, receiving an input voltage and converting the input voltage in response to a pulse width modulation signal, so as to generate and provide a DC output voltage; a control chip, coupled to the flyback power conversion circuit, and generating the pulse width modulation signal to control the operation of the flyback power conversion circuit in response to a power supplying requirement, wherein the control chip has a multi-function detection pin; and a detection auxiliary circuit, coupled to the flyback power conversion circuit and the multi-function detection pin of the control chip, wherein the detection auxiliary circuit assists the control chip to obtain a first detection voltage through the multi-function detection pin in a first detection phase, so as to perform a detection of an over temperature protection and a detection of an over voltage protection synchronously according to the first detection voltage, wherein the first detection voltage is related to the DC output voltage or a thermal voltage of an environment temperature. |
