Abstract: A mobile power source includes an electrical generator, a controller, a resistor, and a user-activated switch positioned on a control panel of the electrical generator, the user-activated switch is configured to move between at least a first position and a second position. In response to the user-activated switch being in the first position, the resistor is configured to act as a terminating resistor at one end of a controller area network (CAN) bus of a power generation system, and in response to the user-activated switch being in the second position, the resistor is configured to be prevented from acting as the terminating resistor of the CAN bus.

Abstract: A load shed module configured to be connected in series between a power supply and a load is disclosed. A separate load shed module is connected in series between each load and the power supply. The load shed module determines the frequency of the voltage supplied from the power supply. Based on the frequency, the load shed module determines if utility power is connected or if a generator is connected. If the generator is connected and the frequency of the voltage goes outside of a desired operating range for a preset time, the load shed module disconnects the load from the power supply. Each load shed module includes a priority setting and reconnects its corresponding load after a predetermined time corresponding to the priority setting.

Abstract: A circuit assembly is provided for a switched-mode power supply of an electric auxiliary device at the site of a connected electric load located in a power circuit in which a switch element switches the operating state of the load with low losses while the auxiliary device is permanently supplied with electric energy. The circuit assembly has a bridge component arranged in a parallel circuit with respect to the switch element, and a support component connected upstream of the load such that the load is supplied with power on the basis of the switch position of the switch element, and at least one auxiliary device arranged between the bridge component and the support component and which is supplied with power without interruption regardless of the switch position of the switch element. The bridge component has a cyclically conductive switch element, and the support component has a anti-cyclically conductive switch element and a storage element.

Abstract: A regulator for a load voltage includes a pass transistor for a load current, a gate voltage sensor coupled to a gate of the pass transistor, and a feed-forward supply noise cancellation circuit configured to amplify a gain of a supply noise cancelling signal at increments of the gate voltage.

Abstract: A high-voltage component and a method of use are provided for an electric, fuel cell, or hybrid vehicle. The HV component is reconfigurable to be included in a centralized HVIL system or in a de-centralized HVIL system. The HV component comprises an internal Hazardous Voltage Interlock Loop system configured to detect an internal HVIL fault; a first relay element configured to enable or disable the HV component; a second relay element configured to be opened to inform a vehicle electronic control unit about the internal HVIL fault; and an HVIL logic unit that is configured to be enabled, when the HV component is reconfigured for the centralized HVIL system, or completely or partially disabled, when the HV component is reconfigured for the de-centralized HVIL system. The first relay element may be opened with a delay after an internal HVIL fault or an external HVIL fault is detected.

Abstract: A circuit breaker includes a breaker body with a circuit therethrough from a line terminal to a load terminal. A pair of isolation contacts in the circuit are configured to close the circuit in a closed state with the isolation contacts touching one another and to break the circuit in an open state with the isolation contacts spaced apart from one another. A solid-state breaking switch is connected in the circuit in electrical series with the isolation contacts so both the solid-state breaking switch and the isolation contacts have to be closed in order for current to flow in the circuit. A controller is operatively connected to control the solid-state breaking switch based on the open state or the closed state of the isolation contacts and based on electrical current passing through the circuit.

Abstract: A half-bridge driver circuit periodically repeats switching cycles by closing a first FET via a first drive signal, detecting an instant when a current flowing through the first FET reaches a threshold and then opening the first FET and closing a second FET via a second drive signal. An error amplifier generates a control voltage by comparing a feedback signal with a reference signal, and a variable current generator generates a first current as a function of the control voltage. The error amplifier includes a proportional-integral controller, and a slope compensation circuit that generates a second current as a ramp signal. The threshold is generated by subtracting the second current from the first current. In response to detecting the instant, the second current is sampled and a signal indicative of the threshold is generated by subtracting the sampled second current from the first current.

Abstract: A power supply system for a data center includes an isolated AC-to-DC power conversion unit, an isolated DC-to-DC power conversion unit, an energy storage unit, a first DC bus and a second DC bus. The input terminal of the power supply system is connected with an AC power source. By the isolated DC-to-DC power conversion unit, a first DC voltage from the first DC bus is converted into a second DC voltage. The second DC voltage is provided to the second DC bus. The main power circuit in the isolated DC-to-DC power conversion unit is an LLC circuit or a boost-SRC circuit. The second DC voltage is between 0.5V and 60V. The energy storage unit is electrically connected with the first DC bus. When the isolated AC-to-DC power conversion unit works normally, the energy storage unit is charged to a floating charge state.

Abstract: Methods and devices to address the undesired DC voltage distribution across switch stacks in OFF state are disclosed. The disclosed devices include charge control elements that sample the RF signal to generate superimposed voltages at specific points of the switch stack biasing circuit. The provided voltages help reducing the drooping voltages on drain/source/body terminals of the transistors within the stack by supplying the current drawn by drain/source terminals of the stacked transistors and/or by sinking the body leakage current exiting the body terminals of such transistors. Methods and techniques teaching how to provide proper tapping points in the biasing circuit to sample the RF signal are also disclosed.

Abstract: An apparatus may be configured to operate in a power transmitter mode and a power receiver mode. The apparatus may include at least one power transfer coil. The at least one power transfer coil may be configured to receive a current to produce magnetic flux, for example when the apparatus is operating in the power transmitter mode. The power transfer coil may be configured to produce a current based on received magnetic flux, for example when the apparatus in operating in the power receiver mode. The apparatus may include a plurality of electromagnets arranged in an array around the at least one power transfer coil. The apparatus may include a control unit configured to determine when to supply a current to the plurality of electromagnets, for example based on whether the apparatus is operating in at least one of the power transmitter mode or the power receiver mode.

Abstract: A circuit for preventing current backflow includes: a signal connection terminal, a power input terminal, an internal power supply terminal, an electrostatic protection circuit, a first switch element and a cut-off control circuit. The electrostatic protection circuit is coupled to the signal connection terminal and the internal power supply terminal. The first switch element is coupled between the power input terminal and the internal power supply terminal. The cut-off control circuit is coupled to the signal connection terminal, the power input terminal and the first switch element. The cut-off control circuit controls the switching of the first switch element according to a voltage of the signal connection terminal and a voltage of the power input terminal.

Abstract: A power management device is disclosed, including a first DC-DC converter coupled to a first output voltage line and a second output voltage line, a second DC-DC converter coupled to the second output voltage line and a third output voltage line, a first set of switches associated with the first DC-DC converter, and a second set of switches associated with the second DC-DC converter. The power management device may further include a controller configured to toggle one or more switches of the first set of switches and one or more switches of the second set of switches, and a multi-mode radio-frequency front-end block communicatively coupled to the controller.

Abstract: A method of operating an EV in one of various states provides an inverter control system having a high voltage circuit powered by a high DC voltage power source; a low voltage circuit powered by a low DC voltage power source that is substantially less than the voltage of the high voltage power source, the low voltage circuit being configured to power a microcontroller; and an inverter circuit having a plurality of high side switches and a plurality of low side switches, the inverter circuit being configured to deliver AC power to a traction motor. Upon powerup of the high voltage circuit and with the low voltage circuit being unpowered, the method establishes an emergency tow state with each of the high side switches and each of the low side switches being open permitting the EV to be towed without damaging the motor.

Abstract: The present application discloses a switch converter, and the switch converter comprises a first switch transistor, a second switch transistor, and an inductor, and further comprises: an acquisition unit for acquiring voltage of at least one end of the inductor, to obtain a first sampling signal and a second sampling signal; an operation unit, to obtain a current sampling signal based on the first sampling signal and the second sampling signal. The current sampling method in the switch converter of the present disclosure is simple, not easily affected by noise interference, and it has low requirements for devices, and adapts to different converters.

Abstract: An electrified vehicle includes an electrified powertrain, a high voltage (HV) battery system including a first HV battery pack and a second HV battery pack, and a HV electrical system including one or more switches and/or contactors configured to selectively connect the HV battery system to a HV bus to power HV loads within the electrified vehicle or power HV loads outside the electrified vehicle. A control system includes a controller programmed to operate in a vehicle-to-vehicle (V2V) charging mode, including, electrically disconnecting the first HV battery pack from the HV bus to function as a reserve battery, electrically connecting the second HV battery pack to the HV bus to function as a donor battery, and discharging the second HV battery pack to charge an additional electrified vehicle or power outside HV loads, while maintaining a charge of the first HV battery pack to thereby reserve power for future use.

Abstract: A method may include generating, using an oscillator, a first signal having a frequency based on a current, generating, based on a second signal, a first portion of the current, the first portion of the current having a first frequency characteristic, and generating, based on the second signal, a second portion of the current, the second portion of the current having a second frequency characteristic. A gain of the first frequency characteristic may change based on a frequency of the second signal. The first frequency characteristic may include a first gain at a first frequency, and a second gain at a second frequency. The first gain may be greater than the second gain, and the second frequency may be greater than the first frequency. A phase of the first frequency characteristic may change based on a frequency of the second signal.

Abstract: A power supply device is configured to connect a power converter between a first terminal for power supply for connecting a first power supply and a second terminal for power supply for connecting a second power supply, to connect a first switch and a second switch between a first connection point between the power converter and an interrupt circuit and a second connection point between the power converter and the second terminal for power supply, include a plurality of terminals for load for connecting loads and a plurality of load switches corresponding to the plurality of terminals for load in one-to-one correspondence, wherein each of the plurality of terminals for load is connected to a line connecting the first switch and the second switch via the corresponding load switch.

Abstract: A pulse generation circuit is provided. The pulse generation circuit includes a reference voltage generator, a pulse generator, a comparator, a voltage regulator, a voltage-controlled oscillator (VCO), and a frequency divider. The reference voltage generator generates a reference signal. The pulse generator generates a pulse signal according to the frequency division signal. The comparator receives and compares the reference signal and the pulse signal to output a comparison signal. When the pulse signal and the reference signal have the same voltage level, the comparator outputs the comparison signal with a low logic level. The voltage regulator receives the comparison signal and the frequency division signal outputs a voltage signal correspondingly. The VCO receives the voltage signal and outputs an oscillation signal correspondingly, and the frequency divider divides the oscillation signal to generate the frequency division signal.

Abstract: An example gate driver circuit includes a sequencer comprising a plurality of parameters defining a gate signal, where the gate driver circuit is configured to output the gate signal to a gate of a switch. The gate driver circuit also includes a comparator configured to output a timing signal to a parameter generation unit, the timing signal being based on a response of the switch receiving the gate signal from the gate driver circuit. The timing signal is indicative of a characteristic of the switch, and the parameter generation unit is configured to determine a parameter of the plurality of parameters based on the characteristic of the switch. The gate driver circuit is also configured to receive input from the parameter generation unit and store the input in the sequencer, the input defining the parameter of the plurality of parameters determined by the processor.

Abstract: A precharge control method for an electric vehicle, which includes: a battery configured to be switched, by switching an internal switch, between a first voltage state capable of outputting a first voltage and a second voltage state capable of outputting a second voltage higher than the first voltage; and a capacitor, includes: in a case of charging the battery at the second voltage, precharging the capacitor under a condition of the battery in the first voltage state set by switching the internal switch.