Abstract: A pre-charging circuit for charging a DC-link capacitor is provided. The pre-charging circuit may include a first semiconductor switch to be coupled to a first terminal of a high voltage source, a first inductor to be coupled to the first semiconductor switch and a first terminal of a capacitor, a second semiconductor switch to be coupled to a second terminal of the high voltage source, a second inductor to be coupled to the second semiconductor switch and a second terminal of the capacitor, and a diode coupled to the first semiconductor switch, the second semiconductor switch, the first inductor, and the second inductor, and coupled in parallel with the capacitor.

Abstract: An apparatus for sensing current in a back-to-back MOSFET configuration is provided. The apparatus may include a first MOSFET having a gate terminal, a drain terminal, and a source terminal, a second MOSFET having a source terminal coupled to the source terminal of the first MOSFET, a gate terminal, and a drain terminal, a gate driver circuit including at least one gate drive output terminal to output a gate drive signal to the gate terminals of the first and second MOSFETs, and a return terminal coupled to the source terminals of the first and second MOSFETs, a shunt resistor coupled between the source terminals of the first and second MOSFETs, and a first MOSFET return resistor coupled between the source terminal of the first MOSFET and the return terminal of the gate driver circuit. The first MOSFET return resistor resistance may be greater than a resistance of the shunt resistor.

Abstract: An apparatus for sensing current in a back-to-back MOSFET configuration is provided. The apparatus may include a first MOSFET having a gate terminal, a drain terminal, and a source terminal, a second MOSFET having a source terminal coupled to the source terminal of the first MOSFET, a gate terminal, and a drain terminal, a gate driver circuit including at least one gate drive output terminal to output a gate drive signal to the gate terminals of the first and second MOSFETs, and a shunt resistor coupled between the source terminals of the first and second MOSFETs. The gate driver circuit may include a return terminal coupled to the source terminal of the first MOSFET, and a return current from the gate terminal of the second MOSFET flows through the shunt resistor to the return terminal of the gate driver circuit.

Abstract: A power converter is provided that includes a power inverter, a rectifier circuit and an isolation transformer circuit. The power inverter is to convert a direct current (DC) input to an alternating current (AC) output, the power inverter including N bridge circuits connected in parallel, where N>1. The rectifier circuit is to convert the AC output to a DC output, the rectifier circuit including N+1 series diode pairs connected in parallel. The isolation transformer circuit is coupled to and between the power inverter and the rectifier circuit to transfer the AC output from the power inverter to the rectifier circuit, the isolation transformer circuit including N transformers. Respective ones of the N transformers are coupled to one of the N bridge circuits and two of the N+1 series diode pairs.

Abstract: An electromagnetic shield termination assembly includes a wire assembly having an electrically conductive wire. An electromagnetic shield extends coaxially with the electrically conductive wire and covers at least a portion of a circumference of the electrically conductive wire, the electromagnetic shield and the electrically conductive wire covered thereby defining a shielded portion of the wire assembly. A non-shielded portion of the wire assembly extends outward of a terminal end of the electromagnetic shield. A termination device has an electrically conductive housing mounted to the wire assembly about the terminal end of the electromagnetic shield such that a portion of the housing engages a portion of the electromagnetic shield, and wherein the housing provides a flow path for an electrical current flowing in the electromagnetic shield.

Abstract: Vehicle high-voltage side heater systems and methods are described. In an example, a controller to input a modulated control signal from a low-voltage side is connected to a high-voltage side heater, which is controlled by the modulated control signal from the controller. The controller can be on low-voltage side and not directly connected to a low-voltage side power but does derive the control signal from an input signal, which can be pulse width modulated.

Abstract: An electromagnetic shield termination assembly includes a wire assembly having an electrically conductive wire. An electromagnetic shield extends coaxially with the electrically conductive wire and covers at least a portion of a circumference of the electrically conductive wire, the electromagnetic shield and the electrically conductive wire covered thereby defining a shielded portion of the wire assembly. A non-shielded portion of the wire assembly extends outward of a terminal end of the electromagnetic shield. A termination device has an electrically conductive housing mounted to the wire assembly about the terminal end of the electromagnetic shield such that a portion of the housing engages a portion of the electromagnetic shield, and wherein the housing provides a flow path for an electrical current flowing in the electromagnetic shield.

Abstract: A remote control system for use with vehicles and other devices having remotely controllable features. The system may include a fob or other similar type of device to support wireless signal communications used to facilitate the remote control. The system may further include a portable device to support display dependent controls or other controls unsuited to the fob. The fob may support wireless communications between the portable device and the controlled device.

Abstract: A remote control system for use with vehicles and other devices having remotely controllable features. The system may include a fob or other similar type of device to support wireless signal communications used to facilitate the remote control. The system may further include a portable device to support display dependent controls or other controls unsuited to the fob. The fob may support wireless communications between the portable device and the controlled device.

Abstract: A passive start and entry (PASE) system includes a PASE module and a token. The token includes a display. The PASE module generates a low frequency wake-up signal and a high frequency challenge signal for the token in response to a triggering event. The token ignores the wake-up signal if the display is on. The token may turn the display off in response to receiving the low frequency wake-up signal. The token may also turn the display off in response to receiving the high frequency challenge signal.