CPC Class H02M

Some exemplary embodiments of a III-nitride power device including a HEMT with multiple interconnect metal layers and a solderable front metal structure using solder bars for external circuit connections have been disclosed. The solderable front metal structure may comprise a tri-metal such as TiNiAg, and may be configured to expose source and drain contacts of the HEMT as alternating elongated digits or bars. Additionally, a single package may integrate multiple such HEMTs wherein the front metal structures expose alternating interdigitated source and drain contacts, which may be advantageous for DC-DC power conversion circuit designs using III-nitride devices. By using solder bars for external circuit connections, lateral conduction is enabled, thereby advantageously reducing device Rdson.

Provided is a remote control system with which leakage current flowing in a switch can be reduced so that power consumption can be reduced. The remote control system includes a portable information terminal, a server, and an electric device. The on/off of the switch included in the electric device is controlled using information transmitted from the portable information terminal to the server. The switch includes a transistor formed using a semiconductor whose band gap is larger than that of single crystal silicon in a channel formation region.

Techniques are described to harvest power from a single current carrying conductor to furnish power to a powered device. The techniques employ a power harvesting device that is coupled to the conductor. In implementations, the conductor has a first path and a second path. The power harvesting device includes a first switch coupled to the second path. An energy storing element is coupled to the first path and configured to store energy based upon the direct current flowing through the first path. The power harvesting device also includes a power condition and management device coupled to the energy storing element configured to switch the first switch to a closed configuration when the energy storing element is measured to have a predefined high voltage threshold, and to switch the first switch to an open configuration when the energy storing element is measured to have a predefined low voltage threshold.

A vehicle-mounted electric rotating machine includes a field winding wound on a rotor for magnetizing a field pole of the rotor, a stator winding for generating an AC voltage in accordance with a rotating magnetic field generated by the field pole, a power converter for converting the AC voltage to a DC voltage and outputting the DC voltage through a first power supply line connected to an output terminal thereof, and a load dump handling section for performing a load dump protection operation when a voltage of the output terminal of the power converter exceeds a threshold voltage. The load dump handling section is supplied with operating power through a second power supply line provided separately from the first power supply line.

A power supply protection system including a first metal oxide field effect transistor (MOSFET) having a first source, a first drain coupled to an input node, and a first gate; a second MOSFET having a second source coupled to the first source, a second drain coupled to an output node and a second gate coupled to the first gate, whereby the first MOSFET and the second MOSFET are coupled back-to-back; a zener diode coupled between the first and second sources and the first and second gates; and charge pump circuitry coupled across the zener diode, whereby a voltage on the first and second gates is boosted with respect to the voltage on the first and second sources.

A power supply system for supplying power to a chipset of an electronic device is provided. The power supply system includes a voltage converter, converting a supply voltage of a power supply into a predetermined voltage and supplying the predetermined voltage to the chipset, and a power control circuit connected between the voltage converter and the power supply. The power control circuit further includes a switch and a switch controller. The switch has a first terminal connected to the power supply, a second terminal connected to the voltage converter and a control terminal The switch controller, connected to the control terminal of the switch and the chipset, controls the switch to couple the power supply to the voltage converter according to the turning-on of the power supply system.