Class / Patent application number | Description | Number of patent applications / Date published |
363062000 | With voltage division by storage type impedance (i.e., V out) | 13 |
20090296431 | SINGLE SWITCH HIGH EFFICIENCY POWER SUPPLY - Disclosed are apparatus and methodology for providing a capacitive voltage divider configured to reduce a relatively high level alternating current (AC) to a lower level direct current (DC). The apparatus provides a series of capacitors and diodes configured for series charging of the capacitors and parallel discharge thereof by way of a single switching element. In operation, the capacitor series is charged during the negative half cycle of the AC source and then discharged during the positive half cycle thereof. | 12-03-2009 |
20100315848 | Time Domain Voltage Step Down Capacitor Based Circuit - A time domain voltage step down capacitor based circuit has an oscillating circuit for generating a clock signal. The circuit also has a capacitor based charge pump circuit for receiving the clock signal and an input voltage signal having an input current and generates an output voltage signal, less than the input voltage signal and an output current greater than the input current. The circuit further comprises a comparator circuit for receiving the output voltage signal, as a first input signal thereto, and a reference voltage signal as a second input signal thereto and compares the first input signal to the second input signal and generates a control signal in response thereto. Finally the control signal is supplied to the oscillating circuit to control the generating of the clock signal | 12-16-2010 |
20110090721 | CAPACITIVE MATRIX CONVERTERS - A direct current (DC) to DC converter, including: input ports for receiving an input DC voltage; output ports for outputting an output DC voltage; a first matrix of capacitors and switches; a second matrix of capacitors and switches; and a control circuit, coupled to the switches of the first and second matrices, configure d to repetitively: (i) configure the first matrix to a charge configuration and couple the first matrix to the input ports while configuring the second matrix to a discharge configuration and coupling the second matrix to the output ports; (ii) maintain the charge and discharge configurations for a first period of time; (iii) configure the second matrix to the charge configuration and couple the second matrix to the input ports while configuring the first matrix to the discharge configuration and couple the first matrix to the output ports; and (iv) maintain the charge and discharge configurations for a second period of time; (a) wherein the charge configuration and the discharge configurations of each matrix out of the first and second matrices differ from each other by a replacement of serial connections of capacitors of the matrix to parallel connections of capacitors of the matrix; (b) wherein the charge configuration and a discharge configuration of each of the first and second matrices are responsive to required conversion ratio between the input DC voltage and the output DC voltage; and (c) each matrix of the first and second matrices comprises at least four capacitors. | 04-21-2011 |
20110090722 | VOLTAGE CONVERTER - A switched capacitor DC-DC voltage converter comprising: a first circuit ( | 04-21-2011 |
20110128761 | CONTINUOUSLY VARIABLE SWITCHED CAPACITOR DC-DC VOLTAGE CONVERTER - A voltage converter is switched among two or more modes to produce an output voltage matching a reference voltage that can be of an intermediate level between discrete levels corresponding to the modes. The output voltage is compared with the reference voltage to determine whether to adjust the mode. | 06-02-2011 |
20110128762 | VOLTAGE CONVERSION METHOD IN A CONTINUOUSLY VARIABLE SWITCHED CAPACITOR DC-DC VOLTAGE CONVERTER - In a voltage converter, a mode configuration is selected in response to a mode control signal using a switch matrix having two or more mode configurations. Each mode configuration corresponds to one of two or more output signal voltages. The output signal is compared with a reference signal to produce a direction comparison signal. The direction comparison signal is used to produce the mode control signal. | 06-02-2011 |
20110242860 | POWER SEMICONDUCTOR DEVICE AND POWER CONVERSION SYSTEM USING THE DEVICE - In some aspects of the invention, a power semiconductor module is applied to a multi-level converter circuit with three or more levels of voltage waveform. A first IGBT, a diode whose cathode is connected to the emitter of the first IGBT, and a second IGBT having reverse blocking voltage whose emitter is connected to the emitter of the first IGBT, are housed in one package, and each of the collector of the first IGBT, the collector of the second IGBT, the connection point of the emitter of the first IGBT and the emitter of the second IGBT, and the anode of the diode, is an external terminal. | 10-06-2011 |
20120057380 | MULTILEVEL INVERTER - A multilevel inverter includes an inverter arm. The inverter arm is provided between a highest electric potential point and a lowest electric potential point, and includes (i) a second switching element group to which switching elements that are connected in series belong, the switching elements being connected to respective diodes which are connected in an opposite polarity and in parallel and (ii) a diode for each power supply connection point. One of connection points at which the switching elements belonging to the second switching element group are connected to each other and a U phase output terminal are connected, the one connection point being located such that at least one of the switching elements provided between the one connection point and the highest electric potential point is equal in number to the other switching elements which belong to the second switching element group and are provided between the one connection point and the lowest electric potential point. | 03-08-2012 |
20140104905 | RECTIFIER CIRCUIT WITH A VOLTAGE SENSOR - A rectifier circuit with a semiconductor element is disclosed. The semiconductor element includes at least one field effect transistor with a control electrode, and at least one driver. The driver cooperates with a voltage sensor, and controls the field effect transistor to a conducting state. The semiconductor element includes the voltage sensor insulated from the at least one field effect transistor. The voltage sensor includes a separate sensor electrode, and a sensor capacitance of the voltage sensor forms a non-linear voltage divider with a reference capacitance. | 04-17-2014 |
20140204637 | STANDBY POWER REDUCTION DEVICE - A standby power reduction device is provided, including a capacitor connected in parallel to a main switch controlling a switching mode power supply, without the necessity of providing a starting circuit, thereby reducing the cost and enabling miniaturization of product. | 07-24-2014 |
20140233285 | INTEGRATED CIRCUIT DEVICE FOR POWER SUPPLY - An integrated circuit device, for a power supply that is connected to an AC power source via an input circuit having a capacitor, is able to reliably discharge the capacitor when the AC power source is interrupted. The integrated circuit device includes a first discharge circuit that operates in response to an internal supply voltage and discharges the capacitor via a first switch element that is turned on when the input voltage provided via the input circuit falls below a set voltage, and a second discharge circuit having a second switch element that is turned off when receiving the internal supply voltage but is turned on in response to the input voltage when the supply of internal supply voltage is interrupted. | 08-21-2014 |
20150016158 | METHOD FOR PROVIDING LOW VOLTAGE DC POWER FROM AC MAINS POWER - According to one aspect, embodiments of the invention provide a power supply system comprising an input line configured to receive input AC power, a first capacitor coupled to the input line, a second capacitor, a controller, a rectifier having an input coupled to the first capacitor and an output coupled to the second capacitor, the second capacitor further coupled to the controller, and a switch selectively coupled across the first capacitor, and configured to selectively bypass the first capacitor, wherein the controller is configured to detect a voltage across the second capacitor, operate the switch to charge the second capacitor at a first rate if the voltage is above a predetermined threshold, and operate the switch to charge the second capacitor at a second rate if the voltage is below a predetermined threshold. | 01-15-2015 |
20160149491 | Scalable Protection Voltage Generator - According to an embodiment, a circuit includes a protection voltage generator coupled to a first voltage node, a second voltage node, and a ground voltage node, the protection voltage generator configured to generate a plurality of protection voltages at a first plurality of nodes based on the first voltage node and the second voltage node, and a voltage protection ladder coupled between the first voltage node and a low voltage circuit, the voltage protection ladder coupled to the plurality of protection voltages at the first plurality of nodes, the voltage protection ladder configured to generate a first low voltage based on the first voltage node and the plurality of protection voltages. | 05-26-2016 |