Bizarre Patents
A forehead support apparatus for resting a standing users forehead against a wall above a bathroom commode or urinal or beneath a showerhead.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 8169206 | Duty feed forward method and apparatus for modulating duty cycle of PMW signal and power converting method and power converter using the same The duty of a PWM signal in a power converter is extracted to feed forward to modulate the slope of a linear oscillating ramp signal or the voltage level of an error signal, so as to modulate the duty of the PWM signal, by which the transient response of the power c... | 05/01/2012 |
| 8164320 | Methods and systems for control of switches in power regulators/power amplifiers A system includes a first switch connected to a voltage input and a switching node. A second switch is connected to the switching node and a reference potential. A first circuit generates first rising edges and first falling edges by comparing a voltage at the switc... | 04/24/2012 |
| 8164319 | System and method for adapting clocking pulse widths for DC-to-DC converters A system and method for adapting a width of a clocking pulse for clocking a DC-DC converter, wherein the width of the clocking pulse is selected based upon the duty cycle of the DC-DC converter. When the DC-DC converter operates below a predefined threshold duty cyc... | 04/24/2012 |
| 8159202 | Quasi-continuous voltage regulator with dual polarity outputs A controller includes a hysteretic circuit that provides a first ON level pulse when a corresponding first negative regulated voltage rises above a respective first voltage threshold. Similarly, a second ON level pulse is provided when a corresponding second positiv... | 04/17/2012 |
| 8148966 | Power supply control circuits including enhanced ramp pulse modulation A power supply control circuit includes a latch including a first latch input for receiving a first logic signal, a second latch input for receiving a second logic signal, and a latch output for providing an output signal. The power supply control circuit further in... | 04/03/2012 |
| 8143875 | Method and apparatus to limit output power in a switching power supply An example integrated circuit controller for a power supply includes a modulator, a drive signal generator, a comparator, and a variable current limit generator. The modulator generates an enable signal having logic states responsive to a feedback signal. The drive ... | 03/27/2012 |
| 8138734 | Accurate current limit for peak current mode DC-DC converter A DC-DC converter includes a switching stage and a control circuit coupled to provide an accurate current limit for peak current mode for the DC-DC converter. The control circuit is operative to provide a peak value of the peak current mode. ... | 03/20/2012 |
| 8138735 | Low-voltage start up circuit and method for DC-DC boost converter A start up circuit (4-1) for a boost circuit (10) includes an adjustable-duty-cycle oscillator (1-2) that turns on a switch transistor (MSW) connected to an inductor (L) receiving an input voltage (VIN). If a ... | 03/20/2012 |
| 8129970 | Switching regulator with reverse current detection A switching regulator that includes an inductor, a first step-down switch to store charge in the inductor, a second step-down switch to discharge the charge, a first step-up switch to store charge in the inductor, a second step-up switch to discharge the charge, a r... | 03/06/2012 |
| 8125207 | Varying operation of a voltage regulator, and components thereof, based upon load conditions A method for operating a voltage regulator controller, for use in a voltage regulator including coupled inductors, is provided as follows. A first signal is generated for driving a first switch of the voltage regulator. A second signal is generated driving a first s... | 02/28/2012 |
| 8125206 | Semiconductor device and power supply using the same A power-supply control IC is included in a switching power supply which drives to turn on and off a semiconductor switching device connected to a DC power supply in series to supply a predetermined constant voltage to an external load, and is a semiconductor device ... | 02/28/2012 |
| 8115465 | Method and apparatus for a high voltage power supply circuit A power converter is disclosed. An example power converter includes an energy transfer element coupled between a power converter input and a power converter output. A power switch is coupled to the energy transfer element. A control circuit is coupled to receive a f... | 02/14/2012 |
| 8106641 | System and method for providing stable control for power systems System and method for providing stable control for power systems. According to an embodiment, the present invention provides an apparatus for providing one or more control signals for a power system. The apparatus includes an input terminal for receiving an electric... | 01/31/2012 |
| 8106642 | Current mode buck converter with fixed PWM/PFM boundary A current mode buck converter is disclosed. The buck converter operates in a pulse width modulation (PWM) mode or a pulse frequency modulation (PFM) mode. To prevent an output inductor with various probable magnitudes from varying a decision boundary between the PWM... | 01/31/2012 |
| 8093877 | Transient voltage compensation apparatus and power supply using the same A transient voltage compensation apparatus and a power supply using the same are provided. The power supply mainly uses a compensation circuit coupled between an input terminal and an output terminal of a power converter. When a load of the power supply is switched ... | 01/10/2012 |
| 8093876 | Power control circuit to prevent a malfunction of a protection circuit A control circuit 10 according to the present invention transits to a first current limiter mode when an output current of a DC-DC converter circuit reaches an upper limit current or greater in a normal mode; transits to the normal mode when the output curren... | 01/10/2012 |
| 8085025 | 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 ... | 12/27/2011 |
| 8072203 | Method and apparatus for regulating electrical power from a non-perpetual power source A method and system for regulating electrical power from a non-perpetual power source. In one implementation, the method includes receiving a variable power output from the non-perpetual power source, wherein a power amplitude of the variable power output substantia... | 12/06/2011 |
| 8072204 | Control system optimization via digital diode emulation The operation of a voltage regulator (or point-of-load regulator) may be optimized, by performing diode emulation using the low-side output transistor (LS FET). The voltage regulator may be monitored for a specified trigger event, which may include an averaged value... | 12/06/2011 |
| 8067929 | High-side sensing of zero inductor current for step down DC-DC converter A DC to DC converter circuit includes circuitry for generating a PWM waveform signal at a phase node of a DC to DC converter responsive to an input voltage and a monitor output voltage. The circuitry further includes a high side switching transistor connected betwee... | 11/29/2011 |
| 8063621 | Current balancing circuit and method A multi-phase power converter and a method for balancing a plurality of currents in the multi-phase power converter. The multi-phase power converter that includes a pulse width modulator coupled to an oscillator. A plurality of currents are generated in response to ... | 11/22/2011 |
| 8058859 | Pulse frequency modulation methods and circuits A technique for voltage regulation involves switching between light load mode and PWM mode based on load conditions. Advantageously, this improves efficiency at light load. In an embodiment, error amplifier output is used to determine whether load is light. When lig... | 11/15/2011 |
| 8054058 | DC-DC converter with improved dynamic response The invention relates to a control method and a controller for a DC-DC converter, such as a synchronous Buck converter, which exploits the principle of capacitor charge balance to allow the converter to recover from a positive and/or negative load current step in th... | 11/08/2011 |
| 8026707 | Circuit system and method for reducing an in-rush current A circuit is provided including an output stage with a pair of transistors. Further provided is a control circuit in communication with the output stage. The control circuit is capable of controlling a duration in which at least one of the transistors is actuated fo... | 09/27/2011 |
| 8022682 | Method to reduce inrush voltage and current in a switching power converter A circuit for minimizing voltage inrush upon startup in a switching power converter having a switching stage including high and low switches connected at a common node, a feedback loop for maintaining a target output voltage, an output capacitor connected between an... | 09/20/2011 |
| 8004262 | Method and apparatus to control a power factor correction circuit A controller for use in a power factor correction (PFC) converter is disclosed. An example controller includes an integrator coupled to receive a voltage sense signal responsive to a magnitude of an ac voltage source. The ac voltage source is coupled to an input of ... | 08/23/2011 |
| 7999528 | Dual mode transient recovery control method of DC-DC converters A dual mode transient recovery control method and system is proposed, which is designed for use with a direct-current (DC) power output unit, such as a DC-DC converter, for fast transient recovery of DC output power by switching the DC-DC converter to operate betwee... | 08/16/2011 |
| 7999527 | Switching controller having programmable feedback circuit for power converters A switching controller for a boost power converter includes a switching-control circuit and a programmable feedback circuit. The programmable feedback circuit is coupled to an output of the boost power converter via a voltage divider. The programmable feedback circu... | 08/16/2011 |
| 7990125 | Method and apparatus to limit output power in a switching power supply Techniques are disclosed to adjust a current limit in a switching regulator. One example switching regulator includes a comparator having first and second inputs and an output. The first input of the comparator is adapted to sense a current flow through a switch and... | 08/02/2011 |
| 7990126 | Low power DC-DC converter with improved load regulation A voltage converter includes, among other things, an amplifier, a voltage combiner, and a hysteretic comparator. The amplifier has a first input terminal which receives a first voltage representative of an output voltage of the voltage converter, a second input term... | 08/02/2011 |
| 7986134 | Power supplies, power supply controllers, and power supply controlling methods A power supply controller is provided. The power supply controller includes a switching device, an inductor, a comparator, and a sensing device. The switching device is coupled to an input power source and switches according to a comparing result. The inductor is co... | 07/26/2011 |
| RE42532 | Synchronous-rectified DC to DC converter with improved current sensing A DC to DC buck pulse width modulator converter circuit includes an input, a high side output and a low side output. A high side switch is electrically connected between a common output node and a voltage supply, and controls a flow of current therethrough dependent... | 07/12/2011 |
| 7973523 | Reverse current sensing regulator system and method A reverse current sensing (RCS) regulator system and method is provided. One embodiment of the invention includes a RCS regulator system. The system comprises a RCS comparator that monitors a drain voltage of a LS FET and is configured to switch states at a zero cro... | 07/05/2011 |
| 7965069 | Power converter and multiport power converter The DC/DC converter is that which is constituted so as to have a failure detecting circuit in which a first capacitor and a second capacitor are connected in series, a plurality of switches are switched according to a predetermined operating mode to select an induct... | 06/21/2011 |
| 7960957 | Headroom compensation circuit for voltage converter A headroom compensation circuit for a voltage converter for ensuring that there is adequate headroom voltage to enable accurate operation of the current sense amplifier sensing the output current of the converter, the headroom compensation circuit comprising an erro... | 06/14/2011 |
| 7960956 | Controller for DC-DC converters with bypass compensation A controller is provided for DC-DC converters of the type associated with a half-bridge driving stage of at least one inductive load, with a pair of power MOS transistors in Highside and Lowside configuration being driven by a corresponding converter. The controller... | 06/14/2011 |
| 7956593 | Power generation circuit using electromagnetic wave A power generation circuit generates and stores electric power utilizing electromagnetic wave energy. The power generation circuit has one of an antenna or a coil that receives an electromagnetic wave. A rectifying circuit is formed on a silicon substrate and rectif... | 06/07/2011 |
| 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 |
| 7940034 | Apparatus for detecting a state of operation of a power semiconductor device An embodiment of the invention relates to an apparatus including a power semiconductor device and a processor coupled thereto. The processor is configured to provide a control signal to the power semiconductor device to regulate an output characteristic of the appar... | 05/10/2011 |
| 7940033 | Control loop for switching power converters A pulse regulation loop for a clocked switching power converter where the loop is around a bridge converter. The loop features a comparator, a charge pump and a filter in series, feeding a pulse modulator controlling the clock duty cycle of the bridge. Ripple in the... | 05/10/2011 |
