The present disclosure provides a fast charging driver. The fast charging driver is configured to charge a battery of an electronic device. The fast charging driver includes a fast charging circuit and a charging controller. The fast charging circuit includes a first depletion-type GaN transistor, a first enhancement-type field effect transistor, a second depletion-type GaN transistor and a second enhancement-type field effect transistor. The charging controller is configured to control the fast charging circuit to operate in a constant current mode or a constant voltage mode according to a battery level of the battery. By utilizing the first depletion-type GaN transistor and the second depletion-type GaN transistor with a characteristic of a relatively low switching loss, the power consumption during charging the battery by the fast charging driver is decreased to improve the charge speed.

A control method of power supply for a portable electronic device is disclosed. The portable electronic device includes a power supply module and a control circuit, and the power supply module is configured to provide electric power to the portable electronic device. The control method of power supply includes detecting, by the control circuit, a system status of the portable electronic device or a module status of the power supply module; and adjusting, by the control circuit, a reserved battery capacity of a main battery of the power supply module according to the system status of the portable electronic device or the module status of the power supply module.

The innovation disclosed and claimed herein, in at least one aspect thereof, comprises continuously charging a cell phone while the user utilizes the cellular phone for ordinary activities (e.g. posting to social media sites, texting, talking, etc.). The signals from routine cellular phone operations will send signals to a photocoupler or other dedicated sensor. The dedicated sensor will output current to drive a magnet mechanism which will in turn drive a fan that generates current to charge to a super/ultra-capacitor.

This disclosure presents a charging container (100) configured to 100 store and charge an in-ear audio listening device (200A; 200B). The charging container (100) comprises a first part (110) and a second part (120). The second part (120) is attached to the first part (110) to form a lid for enclosing an in-ear audio listening device (200A; 200B) when the second part (120) faces the first part (110). At least a portion (122) of the second part (120) is flexible, e.g., made of a flexible material.

A power architecture that uses an efficient intermediate power conversion stage between AC adaptor (and battery charger) and subsequent voltage regulators (VRs) (e.g., core VR) for processors for higher overall efficiency allowing for higher performance in a given thermal envelope and iso-system input power. Power losses from both the charger and the core VR are reduced by splitting the power as power to sustained high-power rails, and power to the rest of the platform power rails that have low residency in high-power states. The sustained high-power rails are placed under an intermediate power conversion topology which is directly powered by the adaptor. The rest of the rails along with charging of the battery are powered by the battery charger.

A device includes a load test unit that determines whether to permit startup of the device using power of a battery supplying power to the device, and a control unit that starts up the device in a case where it is determined to permit startup of the device using the battery and a first voltage is requested of a power supply apparatus to restrict power received from the power supply apparatus. The control unit cancels the restriction of the received power in a case where a notification of completion of connection is received from the power supply apparatus, after the device is started up and a second voltage is requested of the power supply apparatus.

Disclosed are a multifunctional stylus and a touch device. The multifunctional stylus includes a main structure, a charging assembly and a stylus tip. The main structure has an accommodating cavity therein, a first end of the main structure has a charging compartment recessed inwards and a charging electrode is disposed in the charging compartment. The charging assembly is located in the accommodating cavity, and the charging assembly is in electrical contact with the charging electrode to provide electrical energy for the charging electrode. The stylus tip is fixedly connected to a second end of the main structure. Both the multifunctional stylus and the touch device provided by the present disclosure have more functions and a higher utilization rate.

In an embodiment, a sub-surface wireless charger includes a transmitter coil and a controller. The controller is configured to generate a protective pulse having a first energy, determine a characteristic of the transmitter coil based on the generated protective pulse, determine whether it is safe to begin wireless charging based on the determined characteristic, and when the controller determines that it is safe to begin wireless charging, generate an operating pulse having a second energy, where the second energy is higher than the first energy.

A wireless charging holder for vehicles, which is used to firmly clamp a mobile terminal and wirelessly charge the mobile terminal, comprises a fixing component, a supporting component, a steering joint and a conductive circuit. The fixing component is for fixing a mobile terminal and includes a wireless charging module for charging the mobile terminal. The supporting component is for supporting the fixing component. The steering joint is connected between the fixing component and the supporting component, thereby the fixing component may rotate relative to the supporting component. The conductive circuit is extending from an inside of the supporting component through an inside of the steering joint and into an inside of the fixing component, to connect with the wireless charging module.

A vehicle power system includes a coil that, in a first operational mode, receives power wirelessly from an external source, a first battery connected to the coil to receive power transferred from the coil while the coil is in the first operational mode, a second battery that receives power from the first battery, and a switch that switches the coil between the first operational mode and a second operational mode in which the coil receives power from the second battery and wirelessly transfers power from the second battery to an electrical load in the vehicle.