Abstract: A transceiver includes a bidirectional converter, a buck-boost converter and a voltage regulator. The bidirectional converter receives downstream power and converts the downstream power into a rectified voltage. The buck-boost converter converts the rectified voltage into a buck voltage by decreasing a voltage level of the rectified voltage and the voltage regulator converts the buck voltage into a regulated voltage by reducing fluctuations in the buck voltage. In the event that the transceiver outputs upstream power, control circuitry can repurpose the voltage regulator to convert a system voltage into a load voltage by reducing fluctuations in the system voltage, repurpose the buck-boost converter to convert the load voltage into a boost voltage by increasing a voltage level of the load voltage, and repurpose the bidirectional converter to output the boost voltage in the form of upstream power.

Abstract: A transceiver including a voltage regulator, a current regulator and a controller. In response to the voltage regulator receives a supply voltage from an active load, the voltage regulator measures quantified amounts of system current during successive time periods. The system current is consumed by the active load. The current regulator flows load current to ground. The controller processes the quantified amounts to ascertains an operating point for the system current. In response to the current regulator flows the load current to ground, the controller causes the current regulator flows the load current by an amount that clamps the system current to the operating point.

Abstract: A device includes a supply-side converter and a load-side converter. The supply-side converter receives an input voltage from a power source and adjusts the input voltage from a source level to an intermediate level. The supply-side converter outputs the input voltage into an inductor in the form of an intermediate voltage. The load-side converter receives the intermediate voltage from the inductor and adjusts the intermediate voltage from the intermediate level to a load voltage level. The load-side converter outputs the intermediate voltage to a power load in the form of a load voltage.

Abstract: An example power management circuit includes a first pin, a second pin, a p-channel metal-oxide-semiconductor field-effect transistor (PMOS FET), and a controller. The first pin is connectable to an input voltage, and the second pin is connectable to a first external capacitor to supply a positive voltage. The PMOS FET is connected to the first pin to receive the input voltage and is connectable to an external inductor and to a second external capacitor to supply a negative voltage. The controller is configured to turn on the PMOS FET to increase an amount of current flowing through the external inductor during a first time period, and to turn off the PMOS FET to negatively charge the second external capacitor during a second time period.

Abstract: A wireless power transfer device may include a circuit couplable with a coil to transmit or receive a first signal providing wireless power through the coil. The first signal may be modulated with second signals. A packet within any of the second signals may include first bits associated with a preamble and second bits associated with data. The device may further include a controller to measure temporal variations of at least one of the first signal, a rectified version of the first signal, or the one or more second signals. The controller may further determine thresholds for distinguishing between bits in the packet based on the temporal variations. The device may further demodulate the signals using the one or more thresholds to identify the preamble of the packet and extract the second bits associated with data from the packet when the preamble of the packet is identified.

Abstract: The subject technology is directed to power conversion systems and methods. In some embodiments, the subject technology provides a device comprising a first switch configured to receive a first signal and a second switch configured to receive a second signal. A voltage generator is coupled to the first switch. The device further comprises a first resistor coupled to the first switch and a second resistor coupled to the first resistor. The first switch is further coupled to a first capacitor, which acts as a charge pump to generate the negative voltage such that the output of the device comprises both positive and negative voltages. Embodiments of the subject technology achieve bipolar signaling based on a unipolar design, effectively minimizing DC leakage and overall power consumption. There are other embodiments as well.

Abstract: A rectifier includes digital timers to control FET switching rather than direct measurement of current and/or voltage. The digital timers control turn-off time to compensate for a delay produced by comparators in the rectifier. The digital timers are adjusted over multiple cycles to arrive at a turn-off time that produces zero current turn-off. The digital timers may be periodically or continuously readjusted based on a preceding set of cycles. Adaptive turn-off via digital timers is useful for discontinuous conduction mode suppression.

Abstract: A system for controlling power distribution within a vehicular communication network, including a power source equipment comprising a first port in communication with a network node module of a device, and a Power over Ethernet (POE) management module. The POE management module is configured to enable POE to the device via the first port, monitor a current draw of the device, determine whether the current draw of the device exceeds a threshold, and disable POE to the device, responsive to determining that the current draw exceeds the threshold.

Abstract: A system and method for monitoring signal quality metrics coupled with closed-loop control improves rectifier signal quality and stability. The closed-loop control passes the metric through a high-pass filter and captures error values. This signal is then passed to a controller to adjust rectifier settings. The measured signal, where signal quality is derived could be VRECT, FCLK, network coil measurements, is used for ASK demodulation, or the like. The controller identifies noise levels and noise types in real-time, and sets parameters of the rectifier to preserve system stability. The controller may set baud rates and preamble thresholds in a wireless power transfer system in response to identified noise levels and types.

Abstract: A system is disclosed. The system includes a first circuit that includes a first receiver configured to receive a wireless power input, a first conductor, and operably coupled to the first receiver, and a switch network operably coupled to the first conductor configured to rectify the wireless power input and generate a rectified voltage. The first circuit further includes a first field effect transistor operably coupled to the first conductor and configured to receive a portion of the wireless power input from the first conductor and output an output voltage back to the first conductor based upon a gate input.

Abstract: The subject technology is directed to power conversion systems and methods. In some embodiments, the subject technology provides a device comprising a first switch configured to receive a first signal and a second switch configured to receive a second signal. A voltage generator is coupled to the first switch. The device further comprises a first resistor coupled to the first switch and a second resistor coupled to the first resistor. The first switch is further coupled to a first capacitor, which acts as a charge pump to generate the negative voltage such that the output of the device comprises both positive and negative voltages. Embodiments of the subject technology achieve bipolar signaling based on a unipolar design, effectively minimizing DC leakage and overall power consumption. There are other embodiments as well.

Abstract: A rectifier modulates a signal in a rectifier by turning on a low side field effect transistor to produce a load at a coil network in response to a low side field effect transistor in an alternative diagonal being on. The system measures signal quality to determine a necessary modulation depth for ASK communication; then determines a switching time and magnitude of a ballast signal to apply to the low side field effect transistor to achieve that modulation depth.

Abstract: A wireless power transfer device may include a first circuit configured to be connected in series with a coil, a second circuit, and a switch, where switching a state of the switch may selectively couple the second circuit to the first circuit. The switch may be driven by a pulse width modulation (PWM) signal. The device may further include a PWM controller to receive measurements indicative of wireless power transferred through the coil, generate the PWM signal, and adjust the PWM signal to provide the wireless power transferred through the coil according to a selected metric.

Abstract: A system for controlling power distribution within a vehicular communication network, including a power source equipment comprising a first port in communication with a network node module of a device, and a Power over Ethernet (POE) management module. The POE management module is configured to enable POE to the device via the first port, monitor a current draw of the device, determine whether the current draw of the device exceeds a threshold, and disable POE to the device, responsive to determining that the current draw exceeds the threshold.

Abstract: A vehicle control module includes a vehicle device and a vehicle network interface. The vehicle device is operable to perform a vehicle function. The vehicle network interface facilitates communication regarding the vehicle function between the vehicle device and a vehicle network fabric in accordance with a global vehicle network communication protocol.

Abstract: A system and apparatuses for dynamic boost with constant current mode are provided. According a specific embodiment, the present invention provides an apparatus comprising a first circuit that receives a wireless power signal and generates alternating current signals, and a second circuit that rectifies the input signal to produce a direct current output. The second circuit, equipped with low-side and high-side transistors, dynamically boosts the output signal and is capable of entering a constant current mode, maintaining transistor activation for a specified duration.

Abstract: A system for controlling power distribution within a vehicular communication network, including a power source equipment comprising a first port in communication with a network node module of a device, and a Power over Ethernet (POE) management module. The POE management module is configured to enable POE to the device via the first port, monitor a current draw of the device, determine whether the current draw of the device exceeds a threshold, and disable POE to the device, responsive to determining that the current draw exceeds the threshold.

Abstract: A system is disclosed. The system includes a first circuit that includes a first receiver configured to receive a wireless power input, a first conductor, and operably coupled to the first receiver, and a switch network operably coupled to the first conductor configured to rectify the wireless power input and generate a rectified voltage. The first circuit further includes a first field effect transistor operably coupled to the first conductor and configured to receive a portion of the wireless power input from the first conductor and output an output voltage back to the first conductor based upon a gate input.

Abstract: A wireless power transfer device may include a circuit couplable with a coil to transmit or receive a first signal providing wireless power through the coil. The first signal may be modulated with second signals. A packet within any of the second signals may include first bits associated with a preamble and second bits associated with data. The device may further include a controller to measure temporal variations of at least one of the first signal, a rectified version of the first signal, or the one or more second signals. The controller may further determine thresholds for distinguishing between bits in the packet based on the temporal variations. The device may further demodulate the signals using the one or more thresholds to identify the preamble of the packet and extract the second bits associated with data from the packet when the preamble of the packet is identified.

Abstract: A wireless power transfer device may include a first circuit configured to be connected in series with a coil, a second circuit, and a switch, where switching a state of the switch may selectively couple the second circuit to the first circuit. The switch may be driven by a pulse width modulation (PWM) signal. The device may further include a PWM controller to receive measurements indicative of wireless power transferred through the coil, generate the PWM signal, and adjust the PWM signal to provide the wireless power transferred through the coil according to a selected metric.