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| Number | Title | Issue Date |
| 8125800 | Secondary-side amplifier with soft start An isolated switching regulator has a closed-loop soft-start feature that allows tighter regulation of the output voltage and eliminates or reduces overshoot. It also has an optional reset feature which will resoft-start the regulator during recovery from a fault on... | 02/28/2012 |
| 8125188 | Power management system A power management system for supplying power to an output circuit comprising a plurality of rechargeable batteries, a conversion means for converting a supply voltage to a battery voltage to enable charging of one or more of the rechargeable batteries and switch me... | 02/28/2012 |
| 8093833 | Method for controlling an electrical light source by pulse width modulation Disclosed is for controlling a light source by pulse width modulation of a supply voltage. The supply voltage, or a parameter dependent thereon, is measured and the pulse width is controlled as function of the measured value. The supply voltage or parameter is measu... | 01/10/2012 |
| 8081495 | Over power compensation in switched mode power supplies An over-power compensation circuit for use in a switched mode power supply having a current sense circuit for sensing a current flowing through a power transistor of the switched mode power supply. The over-power compensation circuit includes a peak detector, a samp... | 12/20/2011 |
| 8009443 | DC/DC converter and AC/DC converter A DC/DC converter (1) having a plurality n of two-pole inverters (2a, 2b) connected in parallel or in series, n transformers (Ta, Tb) and n two-pole rectifiers (3a, 3b) connected in... | 08/30/2011 |
| 7995363 | DC-DC converter A DC-DC converter includes a charge pump unit and a clock pulse generator unit. The charge pump unit precharges a boost node in response to a precharge clock pulse and boosts the boost node to a boosted voltage in response to a pump clock pulse. The clock pulse gene... | 08/09/2011 |
| 7960962 | Soft-start circuit The present invention discloses a soft-start circuit having a reference signal generator, a first current generator, a second current generator, and a soft-start capacitor. The reference signal generator generates a first signal and a second signal. The first curren... | 06/14/2011 |
| 7948776 | Zero voltage switching high-frequency inverter There is provided a zero-voltage switching high-frequency inverter capable of supplying a current of a large amplitude operation to a load, while suppressing a main switch current. The zero-voltage switching high-frequency inverter according to the present invention... | 05/24/2011 |
| 7948224 | Feedback controller having multiple feedback paths A feedback controller comprises first and second feedback circuits. The first feedback circuit is connected between an input node and an output node and has an error node. The first feedback circuit comprising a feedback amplifier for comparing a feedback signal to ... | 05/24/2011 |
| 7944714 | Zero voltage switching high-frequency inverter There is provided a zero-voltage switching high-frequency inverter capable of supplying a current of a large amplitude operation to a load, while suppressing a main switch current. The zero-voltage switching high-frequency inverter according to the present invention... | 05/17/2011 |
| 7936151 | Battery state monitoring circuitry with low power consumption during a stand-by-state of a battery pack A battery pack including at least one battery cell, a switch, and battery state monitoring circuitry. The battery state monitoring circuitry may be configured to control an ON resistance of the switch to a first ON resistance when the switch is ON and the battery pa... | 05/03/2011 |
| 7929324 | Blade architecture array converter A direct current to pulse amplitude modulated (“PAM”) current converter, denominated a “PAMCC”, is connected to an individual source of direct current. Some embodiments provide a PAMCC for each direct current source in an array, for example multiple solar pa... | 04/19/2011 |
| 7920391 | Double-clamped ZVS buck-boost power converter A transformer-coupled buck-boost DC-DC power converter is disclosed. An active clamp circuit is provided to form a resonant circuit with the transformer to control the slew rate of the secondary current and allow the secondary switch to be turned ON at conditions of... | 04/05/2011 |
| 7920394 | Method to create PWM switching with near zero common mode noise A method for controlling a three-level inverter with a two-level inverter controller uses a conversion circuit to process the two-level control signals and output a set of three-level control signals. ... | 04/05/2011 |
| 7919951 | System stabilization control system In a system stabilizing control system of controlling reactive power by a reactive power compensating device according to a voltage variation of an electric power system in which a capacitor is connected to a bus through a breaker, when the bus voltage drops, the ca... | 04/05/2011 |
| 7911190 | Regulator with automatic power output device detection A switching regulator (20) including an on-chip power output function (24) and also an interface (26) to which off-chip power output devices (42PU, 42PD) may be connected is disclosed. The switching regulator (20) includes a... | 03/22/2011 |
| 7906946 | Semiconductor integrated circuit device for providing series regulator A semiconductor integrated circuit device for controlling an external output transistor is provided. The semiconductor integrated circuit device comprises: a first power supply circuit including an output circuit and providing a first series regulator in cooperation... | 03/15/2011 |
| 7906951 | Switching regulator having reverse current detector A switching regulator includes first and second transistors, which are provided in series between power sources respectively having first and second potentials, and which convert a direct current voltage of a potential difference between the first and the second pot... | 03/15/2011 |
| 7907427 | Inverter The inverter comprises a diode bridge (21) that rectifies an inputted three-phase AC voltage into a DC voltage, an inverter section (22) that converts the DC voltage converted by the diode bridge (21) into an AC voltage and outputs the resulting... | 03/15/2011 |
| 7898823 | Quasi-resonant fly-back converter without auxiliary winding Disclosed is a switching converter without an auxiliary winding. The switching converter has a transformer, a switching transistor, a coupling circuit and a regulating circuit. The transformer has a primary winding and a secondary winding, and is for transforming an... | 03/01/2011 |
| 7898232 | Voltage clamp circuit, a switching power supply device, a semiconductor integrated circuit device, and a voltage level conversion circuit The present invention provides a voltage clamping circuit which is operated in a stable manner with the simple constitution and a switching power source device which enables a high-speed operation. In a switching power source device, one of source/drain routes is co... | 03/01/2011 |
| 7893681 | Electronic circuit An electronic circuit is disclosed. The electronic circuit includes a bandgap circuit provided with first and second bipolar transistors that are coupled at a first node and a current mirror circuit provided with third and fourth transistors with respective control ... | 02/22/2011 |
| 7893675 | Current mode controlled DC-to-DC converter An apparatus having an input voltage and an output voltage is provided. The apparatus comprises a switch that receives the input voltage and that is adapted to be coupled to a load, a modulator having a timing signal, a compensator that is coupled to the modulator a... | 02/22/2011 |
| 7885088 | Method for controlling a multiphase interleaving converter and corresponding controller A method is provided for controlling a converter of the multiphase interleaving type. According to the method, there is detected when a change of the load applied to an output terminal of the converter occurs. All the phases of the converter are simultaneously turne... | 02/08/2011 |
| 7880530 | Power supply circuit, display driver, electro-optical device, and electronic instrument A power supply circuit which boosts a given voltage to generate one or more power supply voltages includes a charge-pump control circuit including switching elements for generating a boost voltage by a charge-pump operation using charge stored in a flying capacitor,... | 02/01/2011 |
| 7880450 | Switching power supply, control circuit controlling switching power supply and control method of switching power supply A switching power supply includes: a first switch provided between one end of a DC power supply and one end of a load; a second switch provided between a node of the first switch located on a load side and another end of the DC power supply; a capacitor provided bet... | 02/01/2011 |
| 7880088 | Power electronic switching device with laminated bus A bus system is disclosed for use with switching devices, such as power electronic devices. The system includes generally parallel bus elements that define electrical reference planes, such as for a dc bus. The bus elements are separated from one another by insulati... | 02/01/2011 |
| 7880455 | Short circuit current ratcheting in switch mode DC/DC voltage regulators A regulator with a high side pass device and a low side pass device coupled in series to the high side pass device is disclosed. The apparatus further includes a control module coupled to the high side pass device and the low side pass device. The control module is ... | 02/01/2011 |
| 7872372 | Power circuit A device for delivering a desired power to a load comprises a voltage detection module, a comparator module, a power regulation module, and a current source. The voltage detection module generates a voltage signal based on a voltage across the load. The comparator m... | 01/18/2011 |
| 7872461 | Reverse current stopping circuit of synchronous rectification type DC-DC converter A reverse current stopping circuit includes a synchronous rectification device, a comparator for detecting a reverse current of an inductor, the synchronous rectification device being turned off when the reverse current is detected by the comparator, a reverse curre... | 01/18/2011 |
| 7872455 | Low-power voltage reference A circuit provides a voltage reference using very low power. It can also be used as a shut regulator for a quiescent current as low as 1.5 μA. It includes a transconductance amplifier, a gain stage, and a power transistor. One embodiment of this invention utilizes ... | 01/18/2011 |
| 7872845 | Control system One embodiment relates to a control system. In one embodiment, a control system is configured to drive a load based on a set-point of the load, a measured load characteristic and a supply voltage of the load. The controller is configured to determine a duty cycle ba... | 01/18/2011 |
| 7869231 | System and method for synchronous rectifier drive that enables converters to operate in transition and discontinuous mode A synchronous rectifier is switched in accordance with a primary switch transition and a reference signal representing current in a current storage device to which the synchronous rectifier is coupled. A current emulator provides a signal representing current in the... | 01/11/2011 |
| 7864554 | Circuit for reducing the variations of auto-supply voltage of a control circuit of a switching power supply A circuit for reducing the variations of auto-supply voltage of a control circuit of a switching power supply, where the control circuit supplies an activation or deactivation signal of a power transistor, includes an auto-supply voltage generator, a controlled swit... | 01/04/2011 |
| 7859243 | Enhanced cascode performance by reduced impact ionization The conventional cascode circuit can be improved by adding another transistor in series. The added transistor may use the body effect to reduce supply voltage variations across the cascode transistor as the supply voltage varies. The added transistor reduces impact ... | 12/28/2010 |
| 7859242 | DC-DC Converter A DC-DC converter includes a reference voltage generation circuit. The reference voltage generation circuit generates a reference voltage for determination of the pulse width of a drive signal to be supplied to a switching circuit. The reference voltage generation c... | 12/28/2010 |
| 7859245 | Apparatus, system and method for outputting a vital output for a processor An apparatus outputs a vital output for a processor including an output state. The apparatus includes a first input receiving the output state, two independent circuits each of which includes a second input electrically interconnected with the first input, a third i... | 12/28/2010 |
| 7852640 | System and method for providing control for switch-mode power supply System and method for providing control for switch-mode power supply. According to an embodiment, the present invention provides a system for regulating a power converter. The system comprises a signal processing component that is configured to receive a first volta... | 12/14/2010 |
| 7852058 | Power supply regulator with digital control An integrated circuit and method in an integrated circuit for providing electrical power utilizing digital power regulation. Various aspects of the present invention provide an integrated circuit comprising a power supply module that outputs electrical power at an o... | 12/14/2010 |
| 7852052 | Supply circuit for implantable medical devices A supply circuit for an implantable medical device (IMD) is presented. The supply circuit includes a battery, a high current circuit, a current-modifying component, a low current circuit, and a capacitor. The low current circuit is connected to a first terminal of t... | 12/14/2010 |
