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| Number | Title | Issue Date |
| 8179116 | Inductor assembly having a core with magnetically isolated forms An embodiment of an inductor assembly includes a core, a first conductor, and a second conductor. The core includes first and second members, a first group of one or more forms extending between the members, a second group of one or more forms extending between the ... | 05/15/2012 |
| 8120336 | Switching regulator circuit, system, and method for providing input current measurement without a dedicated input current sense element A synchronous regulator includes a controller coupled to receive a reference signal and a feedback signal from the regulator and being operable to provide a pulse width modulation (PWM) signal at its output. The regulator includes at least one gate driver coupled to... | 02/21/2012 |
| 8085556 | Dynamic converter topology Methods and apparatus of dynamic topology power converters are provided. One method includes monitoring at least one variable of the power converter and based on the at least one monitored variable, using a converter topology selected between at least a full-bridge ... | 12/27/2011 |
| 8076922 | Inductor assembly having a core with magnetically isolated forms An embodiment of an inductor assembly includes a core, a first conductor, and a second conductor. The core includes first and second members, a first group of one or more forms extending between the members, a second group of one or more forms extending between the ... | 12/13/2011 |
| 8022634 | Method and system for dimming AC-powered light emitting diode (LED) lighting systems using conventional incandescent dimmers A dimming control circuit for dimming light emitting diodes receives an AC input voltage signal from a dimming circuit. The control circuit includes a power stage and a current control loop coupled to the power stage. An AC detector is operable to detect an instanta... | 09/20/2011 |
| 7944192 | Hysteretic power-supply controller with adjustable switching frequency, and related power supply, system, and method An embodiment of a hysteretic power-supply controller includes a signal generator, frequency adjuster, and signal combiner. The signal generator is operable to generate a switching signal having a first level in response to a control signal being greater than a firs... | 05/17/2011 |
| 7944153 | Constant current light emitting diode (LED) driver circuit and method A drive circuit supplies a drive current to a plurality of light emitting diodes. The drive circuit includes a voltage converter circuit having a particular topology and including at least one inductive element and at least one switching element. The drive circuit s... | 05/17/2011 |
| 7791324 | Switching regulator without a dedicated input current sense element A synchronous regulator includes a controller coupled to receive a reference signal and a feedback signal from the regulator operable to provide a pulse width modulation (PWM) signal at its output. The regulator includes at least one gate driver coupled to receive t... | 09/07/2010 |
| 7786912 | Sigma delta converter system and method A sigma delta converter system and method includes a multi bit quantizer circuit coupled to an output of the converter. A single bit analog-to-digital converter circuit is contained in a feedback path of the converter. The converter includes a feed forward path oper... | 08/31/2010 |
| 7786711 | Auxiliary turn-on mechanisms for reducing conduction loss in body-diode of low side MOSFET of coupled-inductor DC-DC converter Conduction loss in the body-diode of a low side MOSFET of a power switching stage of one phase of a coupled-inductor, multi-phase DC-DC converter circuit, associated with current flow in the output inductor of that one phase that is induced by current flow in a mutu... | 08/31/2010 |
| 7782031 | Power supply control A method includes simultaneously driving a load via first and second magnetically coupled regulator phases for a first duration, uncoupling one of the phases from the load after the first duration, and, after uncoupling the one phase from the load, allowing a curren... | 08/24/2010 |
| 7764057 | Constant-on-time switching power supply with virtual ripple feedback and related system and method A signal regulator includes a switching circuit, a controller, and a threshold generator. The switching circuit generates a regulated output voltage, and the controller activates the switching circuit for a predetermined time when the regulated output signal has a p... | 07/27/2010 |
| 7667440 | Power-supply control An embodiment of a power-supply controller is operable to couple a first node of a first inductor to first and second reference nodes, the first inductor composing a first phase of a power supply and having a second node coupled to an output node of the power supply... | 02/23/2010 |
| 7528655 | Amplifier with improved compensation topology and related amplifier circuit, system, and method An embodiment of an amplifier includes an amplifier output node operable to provide an output signal, and an output stage. The output stage includes a drive buffer having an input node and an output node, a drive transistor, and a compensation capacitor. The drive t... | 05/05/2009 |
| 7471756 | Phase detector and method for a shortening phase-error-correction pulse In a phase-locked loop (PLL), a phase detector receives a reference signal and a feedback oscillator signal, generates a phase-detect pulse having a first duration in response to one of the reference and feedback signals, and generates a phase-correction pulse havin... | 12/30/2008 |
| 7443146 | Auxiliary turn-on mechanism for reducing conduction loss in body-diode of low side MOSFET of coupled-inductor DC-DC converter Conduction loss in the body-diode of a low side MOSFET of a power switching stage of one phase of a coupled-inductor, multi-phase DC-DC converter circuit, associated with current flow in the output inductor of that one phase that is induced by current flow in a mutu... | 10/28/2008 |
| 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 |
| 7269217 | PWM controller with integrated PLL A pulse-width modulation (PWM) controller to supply power to electronic components using a phase lock loop (PLL) is presented. A PWM controller comprises an input node operable to receive a reference signal and a phase-locked loop (PLL). The PLL comprises an oscilla... | 09/11/2007 |
