Abstract: A method for performing wireless charging control of an electronic device with aid of simple response of a wireless charging device and an associated apparatus are provided, where the wireless charging device may be arranged to wirelessly charge the electronic device, and the method may include: receiving a plurality of packets from the electronic device, wherein each packet of the plurality of packets is utilized for carrying information of wireless charging reports of the electronic device, and comprises unacknowledged header information; and controlling the wireless charging device to generate at least one simple response corresponding to at least one packet of the plurality of packets, to acknowledge the at least one packet of the plurality of packets.

Abstract: A wireless power transfer apparatus includes a support structure having a top surface and a side surface. The support structure is configured to support a mobile device on the top surface and a wearable device at the side surface. The wireless power transfer apparatus also includes a plurality of transmit coils within the support structure. The plurality of transmit coils are configured to wirelessly transmit power to the mobile device on the top surface and the wearable device at the side surface.

Abstract: A wireless charger for charging multiple devices is provided that includes one or more drive coils that are coupled to a drive amplifier. A plurality of repeater coils are coupled to the one or more drive coils. One or more receiver coils are coupled to the repeater coils. The one or more repeater coils are tuned such that they are only resonant when the one or more receiver coils are in close proximity.

Abstract: A wireless charging in-band communication system includes a transmitter module that formats a message using CRC calculation and attaches the results of the CRC calculation to the message for message error detection. The transmitter includes channel encoding for message error correction. A modulation module performs biphase modulation for DC balanced signals and impedance switching to change reflected impedance seen by the source. A synchronization module prepending the message with a synchronization sequence having Golay complementary codes. Moreover, the in-band communication includes a receiver module that receives the message from the transmitter module. The receiver module includes an impedance sensing circuit to detect changes in the reflected impedance of the transmitter module. The receiver module includes a front end filter used for pulse shaping and noise rejection.

Abstract: The subject matter of this application is embodied in an apparatus that includes a data processor, and two or more hardware monitors to measure parameters associated with the data processor. The apparatus also features a power supply to provide power to the data processor and the hardware monitors, and a controller to control the power supply to adjust an output voltage level of the power supply according to measurements from the hardware monitors. Different weight values are applied to the hardware monitors under different conditions, and the power supply output voltage level is controlled according to weighted measurements or values derived from the weighted measurements.

Abstract: A wireless charging system is provided that includes a charger portion that receives one or more portable elements for charging wirelessly. The charger portion controls the amount of power needed to charge the one or more portable elements. An inband communication module receives inband communications with the one or more portable elements using a random access mode. The charger portion utilizes the inband communications to determine how much power is needed, via energy based reporting, to charge the one or more portable elements that avoids conveying identification information.

Abstract: A resonant wireless power (RWP) system is provided that includes a signal generator that provides an input signal waveform. An amplifier structure amplifies signals for transmissions to a receiver that is powered from a fixed DC voltage supply. The amplifier structure is operated either using differential or single-ended amplifiers to provide two different output power levels, in burst mode to provide a range of output power levels, or using a capacitor in a matching network that is adjusted to provide a range of output power levels.

Abstract: Some embodiments relate to a system that includes a first device which is a wireless power transmitter or mobile device and a power adapter external to the first device. The power adapter is configured to receive a control signal and to control a DC output voltage of the power adapter based upon the control signal. The first device is configured to send the control signal to the power adapter.

Abstract: A wireless power receiver IC in which the power path can be reconfigured as either a low-dropout regulator (LDO), a switched-mode power supply (SMPS) or a power switch (PSW) is provided. All three modes share the same pass device to reduce die area and share the same output terminal to reduce pin. In an inductive wireless receiver, the power path can be reprogrammed on the fly to LDO or PSW mode or can be reprogrammed on the fly to SMPS or PSW mode. In a resonant or multi-mode wireless receiver, the power path can be reprogrammed on the fly to SMPS or PSW mode. Furthermore, to achieve high power transfer efficiency performance, using N-channel MOSFET as its pass device has better efficiency and smaller die area than P-channel MOSFET pass device.

Abstract: A method for performing wireless charging control of an electronic device and an associated apparatus are provided, where the method includes the steps of: performing at least one frequency detection operation according to at least one signal of the electronic device to generate at least one detection result; and determining a specific set of program codes within a plurality of sets of program codes to be an active set of program codes according to the aforementioned at least one detection result, and loading the specific set of program codes from a non-volatile (NV) memory of the electronic device, to control wireless charging operations of the electronic device. For example, the aforementioned at least one signal of the electronic device can be at least one induced signal of a power input coil of the electronic device or at least one derivative of the aforementioned at least one induced signal.

Abstract: A variable gain circuit used in an in-band communication system is provided that includes a current sense pickup that is coupled to the output of a DC power source that senses current from the DC power source and provides a first output signal. A variable controlled amplifier structure, that is coupled to the DC power source, receives the first output signal and provides a specified amount of gain to the first output signal so as to produce a second output signal. A digital signal is produced using the second output having a selected frequency bandwidth.

Abstract: A wireless charging system that includes in-band communication includes: a source device, including: at least a transmitter coil for providing a wireless charging power which is modulated according to a reflected impedance of at least a target device; and at least the target device, oriented on and magnetically coupled to the source device, for receiving the charging power. The target device includes: a receiver coil, loosely coupled to the transmitter coil, for receiving the charging power; a variable resistor loading the receiver coil; and a power detection and modulation circuit, for determining a size of the charging power, and providing a modulation control signal to the variable resistor according to the size of the charging power, for varying the resistance of the variable resistor in order to control an impedance of the target device which will be reflected at the source device.

Abstract: A wireless charging in-band communication system includes a transmitter module that formats a message using CRC calculation and attaches the results of the CRC calculation to the message for message error detection. The transmitter includes channel encoding for message error correction. A modulation module performs biphase modulation for DC balanced signals and impedance switching to change reflected impedance seen by the source. A synchronization module prepending the message with a synchronization sequence having Golay complementary codes. Moreover, the in-band communication includes a receiver module that receives the message from the transmitter module. The receiver module includes an impedance sensing circuit to detect changes in the reflected impedance of the transmitter module. The receiver module includes a front end filter used for pulse shaping and noise rejection.

Abstract: A wireless charging in-band communication system includes a channel encoding for message error correction and detection. A modulation module performs biphase modulation for DC balanced signals and impedance switching to change reflected impedance seen by the source. A synchronization module prepends the message with a synchronization sequence having Golay complementary codes. A receiver module receives the message from the transmitter module. A preamble detection block has a Golay complementary code correlator used for message detection, synchronization, and equalization coefficient estimation and selection. A decoding module that performs biphase demodulation with error correction with a DC offset being estimated as the average value of the signal over the length of the message before channel decoding. The decoding module performs equalization, error correction and detection channel decoding.

Abstract: A resonant wireless power (RWP) receiver is provided that includes an inductor element that couples with a resonant wireless power source. A capacitor arrangement is coupled to the inductor element altering the open-circuit impedance of the RWP receiver to reduce the ac voltage under certain defined situations. The capacitor arrangement includes a plurality capacitors tuned to a control ac voltage in the RWP receiver.

Abstract: A resonant wireless power system includes a source circuit having a source coil, an ac driver with a first resistance, representing the equivalent output impedance of the ac driver, and a matching network. A current probe measures the magnitude signal of the instantaneous source coil current. A voltage probe measures the instantaneous ac driver voltage. A phase detector compares the phase of the instantaneous source coil current and the instantaneous ac driver voltage, and produces a first output signal proportional to the phase difference. A first amplifier compares the magnitude signal and a target signal, and produces an error signal proportional to the difference. A first compensation filter produces the control voltage that determines the ac driver supply voltage. A second amplifier amplifies the first output signal. A second compensation filter produces the control voltage that determines the impedance of a variable element in the source circuit.

Abstract: A resonant wireless power receiver that includes an electromagnetic resonator having one or more inductive elements that are arranged to form a receiver coil and a network of passive components arranged to form a matching network. A rectifier circuit converts ac power from the electromagnetic resonator to dc power. An available-power indicator measures the rectified power to assess the instantaneous power available to the receiver.

Abstract: The subject matter of this application is embodied in an apparatus that includes a data processor, and two or more hardware monitors to measure parameters associated with the data processor. The apparatus also features a power supply to provide power to the data processor and the hardware monitors, and a controller to control the power supply to adjust an output voltage level of the power supply according to measurements from the hardware monitors. Different weight values are applied to the hardware monitors under different conditions, and the power supply output voltage level is controlled according to weighted measurements or values derived from the weighted measurements.

Abstract: The subject matter of this application is embodied in an apparatus that includes a data processor, and a hardware monitor. The hardware monitor can be configured to emulate a critical path of the data processor, measure a parameter associated with the emulated critical path, process the measurement value, and generate an interrupt signal if the processing result meets a criterion. The apparatus also includes a power supply to provide power to the data processor and the hardware monitor, and a controller to control the power supply to adjust an output voltage level of the power supply. The controller upon receiving an interrupt signal from the hardware monitor queries the hardware monitor to obtain a measurement of the parameter and controls the power supply to adjust the output voltage level according to the measurement value.

Abstract: The subject matter of this application is embodied in an apparatus that includes a data processor, and a hardware monitor to emulate a critical path of the data processor and measure a parameter associated with the emulated critical path, process the measurement value, and generate an interrupt signal if the processing result meets a criterion. The apparatus also includes a power supply to provide power to the data processor and the hardware monitor, and a controller to receive the interrupt signal from the hardware monitor and in response to the interrupt signal, controls the power supply to adjust an output voltage level of the power supply.