Abstract: A method and an apparatus for performing charging port detection control are provided, where the method is applied to an electronic device, and a communication port of the electronic device has a functionality of obtaining power from an external power source for the electronic device. The method may include the steps of: detecting whether an output voltage level of a battery of the electronic device reaches a predetermined threshold value; and control operation(s) according to whether the output voltage level reaches the predetermined threshold value. For example, the method may include: when it is detected that the output voltage level is less than the predetermined threshold value, pre-charging the battery with a predetermined pre-charging current level to make the output voltage level reach the predetermined threshold value, and then controlling a detection path switching unit to electrically connect data terminal(s) of the communication port to a charging port detection circuit.

Abstract: A method and an apparatus for performing charging port detection control are provided, where the method is applied to an electronic device, a communication port of the electronic device has a functionality of obtaining power from an external power source for the electronic device, and a power path switching unit of the electronic device is arranged to control electrical connection between a system within the electronic device and a battery of the electronic device. The method may include the steps of: performing charging port detection; and control operation(s) according to the charging port detection. For example, the method may include: controlling the power path switching unit to have different configuration according to the charging port detection in order to charge the battery with different charging profiles; and detecting the system voltage level during charging for switching from the constant current mode to the constant voltage mode.

Abstract: A method and an apparatus for performing charging port detection control are provided, where the method is applied to an electronic device, a communication port of the electronic device has a functionality of obtaining power from an external power source for the electronic device, and a power path switching unit of the electronic device is arranged to control electrical connection between a system within the electronic device and a battery of the electronic device. The method may include the steps of: performing charging port detection; and control operation(s) according to the charging port detection. For example, the method may include: controlling the power path switching unit to have different configuration according to the charging port detection in order to charge the battery with different charging profiles; and detecting the system voltage level during charging for switching from the constant current mode to the constant voltage mode.

Abstract: A method and an apparatus for performing charging port detection control are provided, where the method is applied to an electronic device, a communication port of the electronic device has a functionality of obtaining power from an external power source for the electronic device, and a power path switching unit of the electronic device is arranged to control electrical connection between a system within the electronic device and a battery of the electronic device. The method may include the steps of: performing charging port detection; and control operation(s) according to the charging port detection. For example, the method may include: controlling the power path switching unit to have different configuration according to the charging port detection in order to charge the battery with different charging profiles; and detecting the system voltage level during charging for switching from the constant current mode to the constant voltage mode.

Abstract: A method and an apparatus for performing charging port detection control are provided, where the method is applied to an electronic device, and a communication port of the electronic device has a functionality of obtaining power from an external power source for the electronic device. The method may include the steps of: detecting whether an output voltage level of a battery of the electronic device reaches a predetermined threshold value; and control operation(s) according to whether the output voltage level reaches the predetermined threshold value. For example, the method may include: when it is detected that the output voltage level is less than the predetermined threshold value, pre-charging the battery with a predetermined pre-charging current level to make the output voltage level reach the predetermined threshold value, and then controlling a detection path switching unit to electrically connect data terminal(s) of the communication port to a charging port detection circuit.

Abstract: A method and an apparatus for performing charging port detection control are provided, where the method is applied to an electronic device, and a communication port of the electronic device has a functionality of obtaining power from an external power source for the electronic device. The method may include the steps of: detecting whether an output voltage level of a battery of the electronic device reaches a predetermined threshold value; and control operation(s) according to whether the output voltage level reaches the predetermined threshold value. For example, the method may include: when it is detected that the output voltage level is less than the predetermined threshold value, pre-charging the battery with a predetermined pre-charging current level to make the output voltage level reach the predetermined threshold value, and then controlling a detection path switching unit to electrically connect data terminal(s) of the communication port to a charging port detection circuit.

Abstract: A wireless power supplying system includes a wireless power transmitter and a portable electronic device. The wireless power transmitter is arranged for supplying an output power via wireless communication. The portable electronic device is electrically coupled to the wireless power transmitter and used for transmitting at least one of voltage/current/power information associated with the portable electronic device from the portable electronic device back to the wireless power transmitter, so as to make the wireless power transmitter adjust and supply the output power according to the at least one of voltage/current/power information associated with the portable electronic device.

Abstract: A system consuming energy provided from a battery including a first power source and a second power source. It may include an energy transferring circuit. The energy transferring circuit transfers power of at least one of the first and second power sources to the other of the first and second power sources. The first power source is arranged to provide power for at least one high dynamic power operation that instantaneously consumes large currents. The second power source is arranged to provide power for at least one static/medium power operation. The first power source and the second power source are supplying the system simultaneously.

Abstract: A method and an apparatus for performing charging port detection control are provided, where the method is applied to an electronic device, and a communication port of the electronic device has a functionality of obtaining power from an external power source for the electronic device. The method may include the steps of: detecting whether an output voltage level of a battery of the electronic device reaches a predetermined threshold value; and control operation(s) according to whether the output voltage level reaches the predetermined threshold value. For example, the method may include: when it is detected that the output voltage level is less than the predetermined threshold value, pre-charging the battery with a predetermined pre-charging current level to make the output voltage level reach the predetermined threshold value, and then controlling a detection path switching unit to electrically connect data terminal(s) of the communication port to a charging port detection circuit.

Abstract: A method and an apparatus for performing charging port detection control are provided, where the method is applied to an electronic device, a communication port of the electronic device has a functionality of obtaining power from an external power source for the electronic device, and a power path switching unit of the electronic device is arranged to control electrical connection between a system within the electronic device and a battery of the electronic device. The method may include the steps of: performing charging port detection; and control operation(s) according to the charging port detection. For example, the method may include: controlling the power path switching unit to have different configuration according to the charging port detection in order to charge the battery with different charging profiles; and detecting the system voltage level during charging for switching from the constant current mode to the constant voltage mode.

Abstract: A battery charger for charging a battery through controlling a charging regulation circuit is provided. The battery charger includes a constant voltage mode controller, a current sensing unit, and a reference voltage generator. The constant voltage mode controller is for comparing a battery voltage of the battery with a first reference voltage to generate a regulation signal, and utilizing the regulation signal to control the charging regulation circuit to regulate a charging current applied to the battery. The current sensing unit is for monitoring the charging current to generate an error signal. The reference voltage generator is for setting the first reference voltage according to the error signal. By adding a voltage generator to the battery charger, the overshoot charging current will be reduced and the mode transition will become smooth.

Abstract: A battery charger for charging a battery through controlling a charging regulation circuit is provided. The battery charger includes a current sensing unit and an operational amplifier. The current sensing unit monitors a charging current applied to the battery when the battery charger operates under a constant current mode, thereby generating a first regulation signal to the charging regulation circuit. The operational amplifier compares a battery voltage of the battery with a first reference voltage to generate a comparison result. When the battery charger operates under the constant current mode, the comparison result controls a charging mode transition from the constant current mode to a constant voltage mode. When the battery charger operates under the constant voltage mode, the comparison result acts as a second regulation signal to control the charging regulation circuit.

Abstract: An input circuit comprising a level-determining unit and an output unit is provided. In a first period controlled by a first enable signal, the level-determining unit receives an input signal at an input terminal of the input circuit and determines a voltage level of the input signal. The output unit is coupled to the input terminal. In the first period, the output unit outputs the input signal with the determined voltage level at an output terminal of the input circuit to serve as an output signal. In a second period following the first period, the output unit latches the determined voltage level of the input signal according to a second enable signal and outputs the input signal with the determined voltage level at the output terminal to serve as the output signal.

Abstract: An oscillator circuit. A gain stage element is coupled between both terminals of the crystal. The gain stage element provides a transconductance for oscillation according to a current provided by a current source, and outputs a periodic signal through an output terminal. A bias element is coupled between an input terminal and the output terminal of the gain stage element to bias the gain stage element. A first capacitor is coupled to the input terminal of the gain stage element. A second capacitor is coupled to the output terminal of the gain stage element. A controller detects the periodic signal, and adjusts the current when the periodic signal is obtained.

Abstract: A battery charger for charging a battery through controlling a charging regulation circuit is provided. The battery charger includes a current sensing unit and an operational amplifier. The current sensing unit monitors a charging current applied to the battery when the battery charger operates under a constant current mode, thereby generating a first regulation signal to the charging regulation circuit. The operational amplifier compares a battery voltage of the battery with a first reference voltage to generate a comparison result. When the battery charger operates under the constant current mode, the comparison result controls a charging mode transition from the constant current mode to a constant voltage mode. When the battery charger operates under the constant voltage mode, the comparison result acts as a second regulation signal to control the charging regulation circuit.

Abstract: The present invention provides a battery charger and a method for preventing both an overshoot charging current and an overcharged battery voltage during a mode transition. The battery charger includes a charging regulation circuit having an input terminal, an output terminal, and a control terminal, in which the charging regulation circuit outputs a charging current whose amount is regulated based on a first regulation signal at the control terminal. The battery charger also includes an operational amplifier having a positive input terminal, a negative input terminal, and an output terminal for generating the first regulation signal; The battery charger contains a first switch unit and a second switch unit for controlling current flow in the battery charger.

Abstract: A battery charger for charging a battery through controlling a charging regulation circuit is provided. The battery charger includes a constant voltage mode controller, a current sensing unit, and a reference voltage generator. The constant voltage mode controller is for comparing a battery voltage of the battery with a first reference voltage to generate a regulation signal, and utilizing the regulation signal to control the charging regulation circuit to regulate a charging current applied to the battery. The current sensing unit is for monitoring the charging current to generate an error signal. The reference voltage generator is for setting the first reference voltage according to the error signal. By adding a voltage generator to the battery charger, the overshoot charging current will be reduced and the mode transition will become smooth.

Abstract: The present invention provides a battery charger and a method for preventing an overshoot charging current during a mode transition. The battery charger includes a charging regulation circuit for outputting a charging current whose amount is regulated based on a regulation signal at a control terminal, a first current sensing unit for sensing a current level and outputting an error signal based on both the current level and a first reference signal, an operational amplifier for generating the regulation signal, and a reference voltage generator which includes an ADC for converting the error signal outputted by the current sensing unit to a digital signal, and a DAC for converting the digital signal to a reference voltage.

Abstract: An input circuit comprising a level-determining unit and an output unit is provided. In a first period controlled by a first enable signal, the level-determining unit receives an input signal at an input terminal of the input circuit and determines a voltage level of the input signal. The output unit is coupled to the input terminal. In the first period, the output unit outputs the input signal with the determined voltage level at an output terminal of the input circuit to serve as an output signal. In a second period following the first period, the output unit latches the determined voltage level of the input signal according to a second enable signal and outputs the input signal with the determined voltage level at the output terminal to serve as the output signal.

Abstract: The present invention provides a battery charger and a method for preventing an overshoot charging current during a mode transition. The battery charger includes a charging regulation circuit for outputting a charging current whose amount is regulated based on a regulation signal at a control terminal, a first current sensing unit for sensing a current level and outputting an error signal based on both the current level and a first reference signal, an operational amplifier for generating the regulation signal, and a reference voltage generator which includes an ADC for converting the error signal outputted by the current sensing unit to a digital signal, and a DAC for converting the digital signal to a reference voltage.