| 摘要 |
A power conversion device includes a power supplying terminal, a switching converter, a signal injector, a coupler circuit, a detecting circuit and a controller. After an input voltage is converted into an output voltage by the switching converter, the output voltage is outputted to a load through the power supplying terminal. The signal injector provides a signal. When the load is connected with the power supplying terminal, an operating parameter at the first end of the coupler circuit has a first variation value in response to the signal. When the load is disconnected from the power supplying terminal, the operating parameter at the second end of the coupler circuit has a second variation value in response to the signal. According to the detecting result of the detecting circuit, a switching action of the switching element is selectively enabled or disabled by the controller. |
| 主权项 |
1. A power conversion device, comprising:
a power supplying terminal detachably connected with a load; a switching converter electrically connected with the power supplying terminal, and comprising at least one switch element, wherein an input voltage is converted into an output voltage by the switching converter and the output voltage is outputted to the load through the power supplying terminal; a signal injector providing a signal; a coupler circuit, wherein a first end of the coupler circuit receives the signal, and a second end of the coupler circuit transmits the signal to the power supplying terminal, wherein when the load is connected with the power supplying terminal, an operating parameter at the first end of the coupler circuit has a first variation value in response to the signal, wherein when the load is disconnected from the power supplying terminal, the operating parameter at the second end of the coupler circuit has a second variation value in response to the signal; a detecting circuit for detecting the operating parameter; and a controller electrically connected with the detecting circuit and the at least one switch element, wherein when the detecting circuit judges that the operating parameter at the first end of the coupler circuit has the first variation value, a switching action of the at least one switching element is enabled, wherein when the detecting circuit judges that the operating parameter at the first end of the coupler circuit has the second variation value, the switching action of the at least one switching element is disabled. |
