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| Number | Title | Issue Date |
| 8184460 | Solar inverter and control method A power generation system including a photovoltaic (PV) module to generate direct current (DC) power is provided. The system includes a controller to determine a maximum power point for the power generation system and a boost converter for receiving control signals ... | 05/22/2012 |
| 8184459 | Switching power supply apparatus A switching power supply apparatus employing a voltage obtained by rectifying an output from an AC power supply, as an input thereof includes a switching control circuit. The switching control circuit conducts a PFM control having a fixed ON-period of a switching de... | 05/22/2012 |
| 8169806 | Power converter system with pulsed power transfer Electronic devices such as portable electronic devices are provided. Power converters are provided that convert alternating-current power into direct-current power for powering the electronic devices. A power converter may rectify an alternating current line signal ... | 05/01/2012 |
| 8169805 | Method of operating an inverter by turning off the switching around a zero transition of the output voltage A method for operating an inverter for converting direct voltage into alternating voltage, having two direct-voltage terminals and two alternating-voltage terminals, between which a plurality of power switching elements clocked at high-frequency are connected. The h... | 05/01/2012 |
| 8159846 | Switching control circuit, semiconductor device and switching power source apparatus At the starting time and an overload time in which the output voltage of the switching power source apparatus is low, if an overcurrent state, in which the ON period of the switching device becomes short and a current not less than the current limit value of the swi... | 04/17/2012 |
| 8149603 | Resonance circuit for DC-link voltage control in DC-to-AC inverter The present disclosure relates to a resonance circuit for DC-link voltage control in a DC-to-AC inverter. The resonance circuit comprises two active switches. Before the active switches of the DC-to-AC inverter are turned on, a DC-link voltage is isolated by the act... | 04/03/2012 |
| 8139384 | Method and apparatus for input charge control of a power supply An example controller includes a constant current control circuit and an integrator included in the constant current control circuit. The constant current control circuit is to be coupled to receive an input current sense signal, an input voltage sense signal, and a... | 03/20/2012 |
| 8098506 | Single-stage power supply with power factor correction and constant current output An example controller includes first, second and third inputs, a delayed ramp generator and a drive signal generator. The first, second and third inputs are coupled to receive an input voltage sense signal, an output voltage sense signal, and an input current sense ... | 01/17/2012 |
| 8089791 | Compensation circuit and compensation method for current mode power converters A compensation circuit and a compensation method for providing compensation of a power converter are proposed. A current sense circuit is coupled to receive a switching current for generating a current signal. A signal generation circuit is developed to generate a f... | 01/03/2012 |
| 8085564 | DC bus voltage control for two stage solar converter Systems, methods, and apparatus for supplying AC power to an AC power grid from a DC power source, such as a photovoltaic (PV) array are disclosed. The systems and methods can include a converter coupled to the DC power source that provides DC power to a DC bus at a... | 12/27/2011 |
| 8064233 | Power supply regulating apparatus, semiconductor manufacturing apparatus, method for controlling power to heater, and method for manufacturing semiconductor device A supplying power adjusting apparatus has excellent temperature response and excellent stabilities to power supply change and load change. The apparatus is provided with a semiconductor inverter for high-speed switching power control, which converts a direct current... | 11/22/2011 |
| 8054659 | Power supply with reduced switching losses by blocking a feedback comparator's control signal A power supply device includes a first switching element, a second switching element, a transformer having a primary coil, a low-pass filter including an input port connected to the secondary coil, an output terminal connected to an output port of the low-pass filte... | 11/08/2011 |
| 8050068 | Variable reactive element in a resonant converter circuit A resonant converter is provided which may be used for supplying power to the primary conductive path of an inductively coupled power transfer (ICPT) system. The converter includes a variable reactive element in the resonant circuit which may be controlled to vary t... | 11/01/2011 |
| 8040705 | Circuit with isolation interface and remote on/off A circuit with an isolation interface and a remote on/off function is disclosed. The circuit includes a controller included in a primary side of the circuit. The controller is coupled to receive a primary side feedback signal and the controller is configured to ente... | 10/18/2011 |
| 8031496 | Driving circuit for power switching device, driving method thereof, and switching power supply apparatus A driving circuit includes a generation unit configured to generate a driving signal for turning on and off a power switching device, the driving signal having plural levels of voltage at which the power switching device is turned on. The driving circuit also includ... | 10/04/2011 |
| 8014182 | Power supply device of controlling feedback synchronization A power supply device of controlling feedback synchronization is connected to an electric power source for obtaining an input power and includes first and second converters for modulating the input power. The first and second converters include first and second outp... | 09/06/2011 |
| 7974112 | Off-line converter with digital control A regulation circuit for use in DC to DC converter is disclosed. One such regulation circuit includes a feedback circuit to be coupled an energy transfer element output to receive a feedback signal to indicate whether the energy transfer element output is above or b... | 07/05/2011 |
| 7916509 | Power supply with reduced switching losses by decreasing the switching frequency A power source device includes an input terminal, a first switching element connected to the input terminal, a second switching element connected to the first switching element, a transformer having a primary coil connected to a connecting node between the first and... | 03/29/2011 |
| 7911816 | Linear, inductance based control of regulated electrical properties in a switch mode power supply of a thermal processing system A method and apparatus is featured for providing linear control of a regulated electrical property (e.g., current or voltage) in a switch mode power supply of a thermal processing system that includes an inductive element and at least one switching element. The meth... | 03/22/2011 |
| 7898832 | RV converter with current mode and voltage mode switching A switched mode converter is disclosed that includes mode logic for switching between voltage mode and current mode. The converter includes sensing circuitry for sensing current on the primary side, load current on the secondary side, and converter output voltage. W... | 03/01/2011 |
| 7894223 | Switching power supply circuit A switching power supply circuit uses a magnetic material that is harder to be magnetically saturated than ferrite as a core of a transformer or a choke coil and suitably protects a switching element. The circuit includes a transformer having a core made of a magnet... | 02/22/2011 |
| 7889527 | Electrical power source, operational method of the same, inverter and operational method of the same An electric power source in which a plurality of inverters operate on the same frequency and the plurality of inverters are connected in parallel so that a resistance value expressed by (1−β·G)/(α·G) where α is the output voltage feedback gain, β is the outp... | 02/15/2011 |
| 7881083 | Switch control device, switch control method, and converter using the same A switch control device, a switch control method, and a converter using the same are disclosed. The converter includes: a switch; an energy transfer element that converts input energy into output energy according to a switching operation of the switch; and a switch ... | 02/01/2011 |
| 7881082 | Power conversion apparatus and method of controlling the same A power conversion apparatus includes a series circuit having a first switching element and a second switching element, the series circuit being connected to a DC power source in parallel, a resonant circuit including a capacitor and a primary winding of a transform... | 02/01/2011 |
| 7872887 | DC-AC inverter powering a single phase commercial power system A grounding wire from a commercial power system is connected to a series-connection end of a series connection between two capacitors connected in series between a positive electrode and a negative electrode. A current detector monitors an output current of an inver... | 01/18/2011 |
| 7855906 | DC bus voltage control for two stage solar converter Systems, methods, and apparatus for supplying AC power to an AC power grid from a DC power source, such as a photovoltaic (PV) array are disclosed. The systems and methods can include a converter coupled to the DC power source that provides DC power to a DC bus at a... | 12/21/2010 |
| 7852649 | Power supply with a feedback circuit relieving spikes In a feedback circuit of a power supply, an electrical level of an output voltage is stabilized corresponding to changes of an electrical level of a pulse width modulation signal, and effects, which are caused by spikes, on passive elements are decreased to a lowest... | 12/14/2010 |
| 7852648 | Power supply control apparatus and method of using the same A power supply control apparatus and method are provided. The apparatus includes a controller outputting a first pulse width modulation (PWM) signal for supplying an electric power and a second PWM signal to be compared to the first PWM signal, a first PWM signal in... | 12/14/2010 |
| 7839667 | Adaptive leading-edge blanking circuit and method for switching mode power converter In an adaptive leading-edge blanking circuit and method for a switching mode power converter, an inductor current of the converter is sensed and compared with a threshold to decide an end point of a leading-edge blanking time. Circuit and method are further provided... | 11/23/2010 |
| 7813151 | Variable-mode converter control circuit and half-bridge converter having the same A converter control circuit applicable to various topologies of converters each employing two switching devices is disclosed. The converter control circuit includes an oscillator for generating a pulse signal and triangle-wave signal of a certain frequency, a switch... | 10/12/2010 |
| 7796412 | Method and apparatus for converting direct current to alternating current A method and apparatus for converting Direct Current (DC) to Alternating Current (AC). The method comprises performing system analysis on at least one of a DC current, DC voltage, or an AC voltage; utilizing the system analysis for selecting at least one conversion ... | 09/14/2010 |
| 7768806 | Mixed-code DC/AC inverter A DC/AC inverter and method thereof are disclosed. The DC/AC inverter for driving a load includes a DC power supply for supplying a DC input voltage, a converter circuit coupled to the DC power supply which converts the DC input voltage into an AC signal used to dri... | 08/03/2010 |
| 7706162 | System and method for providing switching to power regulators System and method for providing switching to power regulators. According to an embodiment, the present invention provides system for providing switching. The system includes a first voltage supply that is configured to provide a first voltage. The system also includ... | 04/27/2010 |
| 7701737 | DC-AC converter A DC-AC converter includes a signal generating module, a first switch, a first capacitor, a transformer, and a trigger signal generating module. The signal generating module generates a pulse width modulation (PWM) signal according to a trigger signal. The first swi... | 04/20/2010 |
| 7667990 | Architecture for switching on and off power An architecture for switching on and off power, which applies to a power supply has a power factor regulation unit, a primary power system, and a regular power system. The regular power system provides the primary power system with a regular power to start the prima... | 02/23/2010 |
| 7660138 | Method for operating an inverter including boos, buck, and CUK converter topologies and arrangement for executing the method The invention relates to a method for operating an electronically controlled inverter, said method being characterized in that the inverter is controlled during the positive half-wave of the output alternating voltage in such a way that it operates as a step-up conv... | 02/09/2010 |
| 7643322 | Dual loop constant on time regulator A circuit for improving the regulation of a current or voltage output using a constant-on-time regulator. The circuit uses a dual sense loop design. One sense loop is used to adjust a reference signal or a sense signal. A second sense loop compares the adjusted refe... | 01/05/2010 |
| 7602627 | Electrical power source, operational method of the same, inverter and operational method of the same The present invention is an electric power source in which a plurality of inverters operate on the same frequency and the plurality of inverters are connected in parallel so that a resistance value expressed by (1−β·G)/(α·G) where α is the output voltage feed... | 10/13/2009 |
| 7589985 | Switching Regulator A switching regulator is configured as a fixed-voltage regulator and contains a voltage divider. The voltage divider is supplied with a voltage signal available from a regulator output via a first connection. The voltage divider feds an output signal to the driver c... | 09/15/2009 |
| 7586770 | Interconnection inverter device An interconnection inverter device includes a pair of capacitors connected in series to a pair of direct-current buses each connecting a direct-current power supply and the inverter; an opening/closing unit connected to either one of the pair of direct-current buses... | 09/08/2009 |
