| IXYS Corporation Patent applications |
| Patent application number | Title | Published |
|---|
| 20110312137 | Vertical Power MOSFET and IGBT Fabrication Process with Two Fewer Photomasks - A process for fabrication of a power semiconductor device is disclosed in which a single photomask is used to define each of p-conductivity well regions and n-conductivity type source regions. In the process a single photomask is deposited on a layer of polysilicon on a wafer, the polysilicon layer is removed from first regions of the power semiconductor device where the p-conductivity well regions and the n-conductivity type source regions are to be formed, and both p-conductivity type and n-conductivity type dopants are introduced into the wafer through the first regions. | 12-22-2011 |
| 20110235271 | MOTHER AND DAUGHTER BOARD CONFIGURATION TO IMPROVE CURRENT AND VOLTAGE CAPABILITIES OF A POWER INSTRUMENT - An arrangement of a mother circuit board and daughter circuit boards in a power instrument improves current and voltage capabilities. A mother board is mounted to a base panel of an enclosure, and a number of daughter boards are attached to and extend from the mother board. Each daughter board has substantially identical circuitry and produces substantially the same amount of current. The daughter boards together provide a total output current equal to a sum of each individually generated current. The amount of power generated by the instrument can be increased by attaching additional daughter boards to the mother board. The total current produced by the daughter boards is provided to and output from the mother board via a low inductance output path. The low inductance output path ensures that a sudden increase in current does not result in a large voltage spike that adversely affects instrument operation. | 09-29-2011 |
| 20100307912 | METHODS AND APPARATUSES FOR CONVERTING CARBON DIOXIDE AND TREATING WASTE MATERIAL - Methods and apparatuses for converting carbon dioxide and treating waste material using a high energy electron beam are disclosed. For example, carbon dioxide and an aqueous reaction solution having a reactant can be combined to form an aqueous reaction mixture, and the aqueous reaction mixture can then be subjected to a high energy electron beam that initiates a reaction between carbon dioxide and the reactant to form a reaction product. Solid or liquid waste material can be treated by, for example, combining carbon dioxide and a solid or liquid waste material having a reactant and then subjecting the carbon dioxide and solid or liquid waste material having a reactant to a high energy electron beam to initiate a reaction between the carbon dioxide and the reactant to form a reaction product. | 12-09-2010 |
| 20100277104 | 1-WIRE COMMUNICATION PROTOCOL AND INTERFACE CIRCUIT - A 1-wire communication protocol and interface circuitry for communication between a host controller and a LED driver is provided. The 1-wire communication protocol is configured such that both PWM signals and DC current setting commands for programming the LED driver may be transmitted from the host controller to the LED driver via the same 1-wire interface. The 1-wire communication protocol uses the length of the pulses (pulse width), rather than the number of pulses, to distinguish between different modes of communication (PWM signal transmission mode or command pulse transmission mode) and different commands of the same type (specific DC current programming commands, or specific average PWM drive current for the LED, within each transmission mode). Because the same 1-wire interface is used for transmitting both PWM signals and DC current commands, integrated circuits for the host controller and the LED driver do not require an additional wire or pin. | 11-04-2010 |
| 20100224982 | LEAD AND LEAD FRAME FOR POWER PACKAGE - A power device includes a semiconductor chip provided over a substrate, and a patterned lead. The patterned lead includes a raised portion located between a main portion and an end portion. At least part of the raised portion is positioned over the semiconductor chip at a larger height than both the main portion and the end portion. A bonding pad may also be included. The end portion may include a raised portion, bonded portion, and connecting portion. At least part of the bonded portion is bonded to the bonding pad and at least part of the raised portion is positioned over the bonding pad at a larger height than the bonded portion and connecting portion. The end portion may also include a plurality of similarly raised portions. | 09-09-2010 |
| 20100109759 | SOLAR CELL DEVICE HAVING A CHARGE PUMP - A solar cell device includes a solar cell section configured to output a first voltage upon receiving light. A charge pump circuit includes a first charge pump. The first charge pump includes a first terminal and a second terminal. The first terminal is configured to receive the first voltage from the solar cell section, and the second terminal is configured to output a second voltage that is higher than the first voltage. An output section is configured to receive an output voltage output by the charge pump circuit. The charge pump circuit is formed on a single semiconductor substrate. | 05-06-2010 |
| 20100078674 | INSULATED GATE BIPOLAR TRANSISTOR - A trench structure of an insulated gate bipolar transistor (IGBT) is formed as a trench net in a P region and extends into an N− layer. The trench net separates the P region into P wells and floating P layers. The P wells contact an emitter electrode while the floating P layers are not in direct contact with the emitter electrode. A gate formed of conductive material and having a surrounding insulation oxide layer is formed in the trench net. An N+ layer may be formed above each floating P layer under the gate. The floating P layers are isolated from the gate and are also not connected to the emitter electrode. | 04-01-2010 |
| 20100042857 | SYSTEM AND METHOD FOR CONSERVING POWER APPLIED TO AN ELECTRICAL APPARATUS - A usage pattern identifies time periods when an electrical apparatus is likely to be powered-up or not in use. Power provided to an electrical apparatus is increased during time periods that the electrical apparatus is likely to be powered-up. Similarly, the power provided to the electrical apparatus is reduced or removed during time periods that the electrical apparatus is likely to be out of use or idle. The usage pattern is continually updated and refined by collecting usage data during user interaction with the electrical apparatus. | 02-18-2010 |
| 20090326597 | SOLAR CELL FOR IMPLANTABLE MEDICAL DEVICE - An implantable medical device includes a solar cell configured to provide energy to recharge a power source such as a battery. The power source is coupled to a control circuit of the medical device and provides power to the circuit. The solar cell may be coupled to the power source via a wire and may be distanced from a housing of the medical device. The solar cell may also be attached to the housing or may be disposed in the housing. The medical device may be implanted in the body of a host such that a surface of the solar cell is provided under a layer of skin of the host. The translucent property of skin allows the solar cell to receive light or infrared radiation from outside the body. The solar cell converts the received energy and provides the converted energy to the power source for recharging. | 12-31-2009 |
