Abstract: The present disclosure provides a semiconductor structure with having a source/drain feature with a central cavity, and a source/drain contact feature formed in central cavity of the source/drain region, wherein the source/drain contact feature is nearly wrapped around by the source/drain region. The source/drain contact feature may extend to a lower most of a plurality semiconductor layers.

Abstract: A wafer container includes a frame, a door and at least a pair of shelves. The frame has opposite sidewalls. The pair of the shelves are respectively disposed and aligned on the opposite sidewalls of the frame. Various methods and devices are provided for holding at least one wafer to the shelves during transport.

Abstract: This invention discloses a power supply system and power supply method with a power saving function for a rechargeable battery. The power supply system includes a power adapter and a portable electronic device body. The power adapter has a control pin. The portable electronic device body includes a connector, a charging unit, and an embedded controller. The embedded controller is used for detecting a capacity state of the rechargeable battery and whether the rechargeable battery is connected with the connector to determine whether the rechargeable battery needs to be charged. When the rechargeable battery does not need to be charged, the embedded controller controls the power adapter to output a first voltage via the control pin. When the rechargeable battery needs to be charged, the embedded controller controls the power adapter to output a second voltage via the control pin. The first voltage is lower than the second voltage.

Abstract: A power monitoring circuit having an automatic feedback function and an overload protection function is described. The power monitoring circuit has a current detection module, a voltage detection module, a multiplication module, and an overload protection module. The current detection module is used to obtain the current value of a power supply path. The voltage detection module is used to obtain the voltage value of the power supply path. The multiplication module generates the power value of the power supply path with reference to the current value and the voltage value. The overload protection module determines, with reference to the power value, whether to switch off the input of the power supply path, so that the overload protection module protects the system load connected to the power supply path. The current detection module, the voltage detection module, and the multiplication module are integrated into a chip.

Abstract: A buck converter includes a first transistor, a second transistor, a filter circuit, a capacitor and a switch. The first transistor has a drain for receiving a first DC voltage, a gate for receiving a first control signal, and a source coupled to a node. The second transistor has a drain coupled to the node, a gate for receiving a second control signal, and a source coupled to a constant voltage. The filter circuit is electrically coupled to the node for outputting a second DC voltage. The switch has a first terminal electrically coupled to the gate of the second transistor via the capacitor, a second terminal electrically coupled to the source of the second transistor, and a control terminal for receiving the first control signal. The switch has a faster switching speed than the first transistor.

Abstract: An electronic apparatus, for inputting a DC power through an adapter, includes a loading circuit and a DC power input apparatus. The loading circuit, including a first power input terminal and a second power input terminal, is used for receiving the first DC power. The DC power input apparatus, for inputting the first DC power to the loading circuit, includes a fuse and rectifier. The fuse includes a first terminal coupled to a first voltage terminal of the adapter, and a second terminal coupled to the first voltage input terminal of the loading circuit. The rectifier, coupled to the fuse, includes a first polarity terminal coupled to the second terminal of the fuse, and a second polarity terminal coupled to a second voltage terminal of the adapter and the second power input terminal of the loading circuit. The second polarity terminal has a polarity inverse to the second voltage terminal.

Abstract: An electronic apparatus, for inputting a DC power through an adapter, includes a loading circuit and a DC power input apparatus. The loading circuit, including a first power input terminal and a second power input terminal, is used for receiving the first DC power. The DC power input apparatus, for inputting the first DC power to the loading circuit, includes a fuse and rectifier. The fuse includes a first terminal coupled to a first voltage terminal of the adapter, and a second terminal coupled to the first voltage input terminal of the loading circuit. The rectifier, coupled to the fuse, includes a first polarity terminal coupled to the second terminal of the fuse, and a second polarity terminal coupled to a second voltage terminal of the adapter and the second power input terminal of the loading circuit. The second polarity terminal has a polarity inverse to the second voltage terminal.

Abstract: A buck converter includes a first transistor, a second transistor, a filter circuit, a capacitor and a switch. The first transistor has a drain for receiving a first DC voltage, a gate for receiving a first control signal, and a source coupled to a node. The second transistor has a drain coupled to the node, a gate for receiving a second control signal, and a source coupled to a constant voltage. The filter circuit is electrically coupled to the node for outputting a second DC voltage. The switch has a first terminal electrically coupled to the gate of the second transistor via the capacitor, a second terminal electrically coupled to the source of the second transistor, and a control terminal for receiving the first control signal. The switch has a faster switching speed than the first transistor.

Abstract: A power monitoring circuit having an automatic feedback function and an overload protection function is described. The power monitoring circuit has a current detection module, a voltage detection module, a multiplication module, and an overload protection module. The current detection module is used to obtain the current value of a power supply path. The voltage detection module is used to obtain the voltage value of the power supply path. The multiplication module generates the power value of the power supply path with reference to the current value and the voltage value. The overload protection module determines, with reference to the power value, whether to switch off the input of the power supply path, so that the overload protection module protects the system load connected to the power supply path. The current detection module, the voltage detection module, and the multiplication module are integrated into a chip.

Abstract: A charging device capable of dynamically adjusting a charging power. The charging device has elements as follows. A DC-DC converter power stage is used for supplying a charging current to the rechargeable battery. A current error amplifier is used for setting a charging current adjustment signal, being fed to the DC-DC converter power stage for adjusting the charging current. A first current detecting device is used for setting the charging current signal being fed to the current error amplifier. Meanwhile, the charging current is outputted to the rechargeable battery to charge the rechargeable battery. A current detecting/comparating device is used for feedback and outputting the charge current operation signal based upon the work current and a calculated charge current signal. The charging device dynamically adjusts the charging power to increase the utility of the output power of the external power source and reduce the charging time.

Abstract: A charging device capable of dynamically adjusting a charging power. The charging device has elements as follows. A DC-DC converter power stage is used for supplying a charging current to the rechargeable battery. A current error amplifier is used for setting a charging current adjustment signal, being fed to the DC-DC converter power stage for adjusting the charging current. A first current detecting device is used for setting the charging current signal being fed to the current error amplifier. Meanwhile, the charging current is outputted to the rechargeable battery to charge the rechargeable battery A current detecting/comparating device is used for setting and outputting the work current operation signal based upon the work current and a work current setting signal. The charging device dynamically adjust the charging power to increase the utility of the output power of the external power source and reduce the charging time.