Did You Know...
...that it was melting ice cream that inspired the invention of the outboard motor? It was a lovely August day and Ole Evinrude was rowing his boat to his favorite island picnic spot. As he rowed, he watched his ice cream melt and wished he had a faster way to get to the island. At that moment the idea for the outboard motor was born!
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 |
| 7679351 | Power supply apparatus A voltage generation unit generates a driving voltage for driving an LED. A first feedback path feeds back a voltage according to a voltage at one end of the LED. A second feedback path feeds back a voltage according to a voltage at the other end of the LED. A curre... | 03/16/2010 |
| 7619400 | Compact voltage step-up/step-down switching regulator This patent specification describes a switching regulator which includes a step-up/step-down unit configured to generate an output voltage by stepping up or down an input voltage in accordance with a control signal, and a control unit configured to cause the step-up... | 11/17/2009 |
| 7439721 | Constant-on-time power-supply controller and related system and method A constant-on-time power-supply controller includes an adder and a control circuit. The adder generates a sum of a sense voltage and a regulated output voltage generated by a filter inductor. The sense voltage is generated by a sense circuit that sources a current t... | 10/21/2008 |
| 7408328 | Information handling system including a power supply unit with a switching regulator that reduces transient load release An information handling system (“IHS”) includes a system board and a power supply unit coupled to the system board. The power supply unit includes a switching power regulator. The switching power regulator includes an inductor coupled to an output, a capacitor c... | 08/05/2008 |
| 7379284 | Switching control circuit and self-excited DC-DC converter A self-excited DC-DC converter comprises a switching element that chops a direct-current input voltage; a smoothing circuit that smoothes the chopped voltage to generate a DC output voltage; a switching control signal generation circuit that generates a switching co... | 05/27/2008 |
| 7375441 | Systems and methods for dynamically affecting power dissipation in a disk drive including a fixed output voltage regulator A disk drive system includes a fixed output voltage regulator including an output terminal that provides a substantially fixed output voltage. A plurality of loads, each includes a voltage supply terminal. A programmable resistor bank which is adapted to selectively... | 05/20/2008 |
| 7365526 | Synchronous buck DC/DC converter to perform an improved switching operation by adjusting variable resistor A synchronous buck DC/DC converter to perform an improved switching operation by adjusting a variable resistor is provided. The synchronous buck DC/DC converter includes a switching unit for switching two PWM signals inverted with a dead time and outputting the PWM ... | 04/29/2008 |
| 7358627 | Electronic control systems and methods An apparatus in an electronic control system allows two or three wire operation. A power supply can supply power to the enclosed circuitry in both two and three wire installations. Two separate zero cross detectors are used such that timing information can be collec... | 04/15/2008 |
| 7342764 | Electronic control systems and methods An apparatus in an electronic control system allows two or three wire operation. A power supply can supply power to the enclosed circuitry in both two and three wire installations. Two separate zero cross detectors are used such that timing information can be collec... | 03/11/2008 |
| 7336057 | DC/DC converter A DC/DC converter includes: a boost converter that boosts an input voltage in accordance with a first control signal; an insulated converter that converts an output of the boost converter in accordance with a second control signal; a current sensor that detects an o... | 02/26/2008 |
| 7323828 | LED current bias control using a step down regulator A step down switching regulator circuit that is particularly well-suited to drive high power LEDs includes a crossover conduction mode (XCM) control circuit that maintains operation at the crossover point between continuous conduction mode (CCM) and discontinuous co... | 01/29/2008 |
| 7321222 | Switching regulator with DC offset (bias) in controller After a current value flowing through a coil L is detected, it is converted into a voltage value, is then inputted to an inverting input terminal of a comparator 4, and is then compared with a voltage indicating the difference between the value of a fed back ... | 01/22/2008 |
| 7315153 | Switching power supply in an integrated circuit having a comparator with two threshold values, a synchronization input and output, voltage feedback and efficient current sensing A switching power supply circuit in which a series circuit comprising a resistive element and a capacitive element is provided in a parallel configuration with an inductor which supplies a load current to a load circuit, a voltage comparator having first and second ... | 01/01/2008 |
| 7315440 | Circuit and method for driving a coil-armature device Methods and circuits for driving a coil-armature device are disclosed. The circuits are configured to drive the coil-armature device to a first energy level for a period of time sufficient to retract the armature to the center of the coil, and then, to drive the coi... | 01/01/2008 |
| 7312599 | Buck converter A buck converter includes a first transistor, a second transistor, a filter circuit, a capacitor and a switch. The first transistor has a drain for receiving a first DC voltage, a gate for receiving a first control signal, and a source coupled to a node. The second ... | 12/25/2007 |
| 7274182 | Spring modulation with fast load-transient response for a voltage regulator A spring modulation is proposed to regulate the output voltage of a voltage regulator. The spring modulation comprises a differential amplifier to generate a pair of voltage signal and current signal varied with the difference between a reference signal and a feedba... | 09/25/2007 |
| 7268526 | Switch mode power supply control circuit An apparatus and method is arranged to dynamically adjust a pulse width (e.g., off-time pulse) associated with a switching device in a converter such as a buck converter, a boost converter, or a buck-boost regulator. A one-shot circuit is configured to dynamically i... | 09/11/2007 |
| 7265603 | MOSFET gate driver with a negative gate bias voltage A circuit for preventing shoot-through in a high side switching transistor coupled in series with a low side switching transistor across a supply voltage, the circuit comprising a voltage reference circuit having an output providing a reference voltage which is nega... | 09/04/2007 |
| 7259951 | Semiconductor device A semiconductor device comprises an output transistor for controlling current that flows between a first terminal and a second terminal, a detection transistor connected in parallel with the output transistor, a detection resistor connected in series with the detect... | 08/21/2007 |
| 7253594 | Reducing power/area requirements to support sleep mode operation when regulators are turned off A single sleep mode controller which ensures that there is at least a corresponding minimum voltage level across capacitors when the corresponding regulators are turned off. In an embodiment, the sleep mode controller uses a single comparator which compares the volt... | 08/07/2007 |
| 7253593 | DC-DC converter and error amplifier thereof A DC-DC converter includes an error amplifier that includes an operational transconductance amplifier (OTA), a compensation circuit, and a fast transient controller. The OTA includes a compensation resistor, a compensation capacitor of Cz, and a Miller ci... | 08/07/2007 |
| 7230838 | Active damping control for a switch mode power supply Methods and apparatus are disclosed for suppressing circuit noise due to parasitic elements in switch mode power supplies. The presented embodiments use actively controlled damping devices such as controllable resistors, current sources, and tri-state power devices ... | 06/12/2007 |
| 7224153 | Apparatus and method to compensate for effects of load capacitance on power regulator A power regulator has an output for regulated power that is connected to supply power to a load. The load can have various electrical characteristics, including requiring a rapid transient response. The transient response amplitude for the power regulator is decreas... | 05/29/2007 |
| 7221130 | Switching power converter employing pulse frequency modulation control A method for controlling a switching power converter provides an efficient algorithm for controlling the output voltage across loads that are relatively light with small transients. When the output voltage is at or below a predetermined first magnitude, a determinat... | 05/22/2007 |
| 7208921 | DC-DC regulator with switching frequency responsive to load A switch mode power supply in which the switching frequency is controlled by an oscillator having a nominal frequency, and having an error amplifier to provide an output signal which represents departure of the power supply output from a nominal value, and which fun... | 04/24/2007 |
| 7208928 | Oscillatorless DC-DC power converter A power converter for coupling an energy source to a load device comprising a selectively coupled output stage to deliver energy from an energy source to a load device, a controller coupled to the output stage, an output stage, a capacitive element coupled to the ou... | 04/24/2007 |
| 7202653 | High efficiency power converter A high efficiency power converter comprises a boost converter for converting an input voltage to a first voltage on a first output, a buck converter for converting the input voltage to a second voltage on a second output, a linear regulator for converting the first ... | 04/10/2007 |
| 7180274 | Switching voltage regulator operating without a discontinuous mode A switching circuit operates with a first operating state and a second operating state. During the first operating state, the switching circuit allows a switching current to linearly increase. During the second operating state, the switching circuit allows the switc... | 02/20/2007 |
| 7170267 | Switching regulator with average current mode control A system and method control an output voltage across a load using current mode control to control current through an output filter connected to the load. The output voltage across the load is compared with a reference voltage to generate a reference current signal i... | 01/30/2007 |
| 7167382 | Semiconductor device The present invention relates to a semiconductor device that is employed in a switching power supply for which a higher output is required, prevents noise from the coil, transformer, and so forth and implements a high efficiency power supply. By connecting a current... | 01/23/2007 |
| 7154338 | Power control circuit and method A method (400) for controlling power and an amplifier and associated power control circuit (100) with a power amplifier (110) coupled through a current sensing resistor (Rsen) to a supply voltage line (vcc). There is also a current to voltage co... | 12/26/2006 |
| 7109693 | Switching power supply device and switching power supply system There is provided a switching power supply device of hysteresis current mode control system which assures excellent response characteristic for change of output current and reduction of power consumption. In a switching regulator of hysteresis current mode control s... | 09/19/2006 |
| 7091711 | Switching power supply device and switching power supply system There is provided a switching power supply device of hysteresis current mode control system which assures excellent response characteristic for change of output current and reduction of power consumption. In a switching regulator of hysteresis current mode control s... | 08/15/2006 |
| 7078942 | Driving apparatus for generating a driving current using PWM A current driving apparatus includes a first square wave generator (100), a second square wave generator (200), an FET (Field Effect Transistor) (3), and a power supply (9). The first square wave generator has an output connected to the s... | 07/18/2006 |
| 7019502 | Synchronization of multiphase synthetic ripple voltage regulator A multiphase synthetic ripple voltage generator for a multiphase DC-DC regulator including a master clock circuit that generates a master clock signal, sequence logic and a ripple regulator for each phase. The DC-DC regulator includes multiple switching circuits, ea... | 03/28/2006 |
| 7005762 | Electronic control systems and methods An apparatus in an electronic control system allows two or three wire operation. A power supply can supply power to the enclosed circuitry in both two and three wire installations. Two separate zero cross detectors are used such that timing information can be collec... | 02/28/2006 |
| 6995483 | Synchronous buck and boost regulator power reduction circuit using high side sensing A synchronous DC-DC regulator, adapted to receive a high side pulsed signal and a low side pulsed signal that is substantially the inverse of the high side pulsed signal. The regulator includes an inductor, and a capacitor having one port connected to ground, and ha... | 02/07/2006 |
| 6992473 | Current sensing circuit for DC/DC buck converters A circuit and a related method to sense the inductor current of CD/DC buck converters have been achieved. The inductor current is sensed by generation of a voltage drop across a fully integrated sense resistor. The voltage drop is proportional to the inductor curren... | 01/31/2006 |
| 6979985 | Switching power supply device and switching power supply system There is provided a switching power supply device of hysteresis current mode control system which assures excellent response characteristic for change of output current and reduction of power consumption. In a switching regulator of hysteresis current mode control s... | 12/27/2005 |
| 6977825 | Voltage regulator using a transimpedance block to measure output A method of controlling the output voltage of a voltage regulator that uses a transimpedance block is disclosed. The method comprises measuring the voltage representative current of the output and comparing the voltage representative current to a reference current. ... | 12/20/2005 |
