Patent application number | Description | Published |
20110115453 | NONLINEAR CONTROL LOOP FOR DC-DC CONVERTERS - A nonlinear converter, such as a DC-DC converter, includes a nonlinear controller configured to receive an output voltage and a current, and configured to generate a PWM signal. The PWM signal is generated based on setting the converter to a first phase associated with both buck and boost modes when a clock signal is asserted, and selecting a second phase associated with the buck mode of the converter, if a sliding function signal achieves a first predetermined relationship with respect to a buck threshold before a next clock signal is asserted, or selecting a third phase associated with the boost mode of the converter, if the sliding function signal achieves a second predetermined relationship with respect to a boost threshold before a next clock signal is asserted. The nonlinear converter may include a power stage configured to provide the output voltage and a coil current to the nonlinear controller. | 05-19-2011 |
20110210707 | PULSE MODULATION CONTROL IN A DC-DC CONVERTER CIRCUIT - In a device, a pulse modulation switching logic is provided to generate switching signals of a pulse modulator so as to generate a pulse modulated signal with a first pulse modulation control parameter and a second pulse modulation control parameter. The first pulse modulation control parameter is controlled on the basis of a first control signal, and the second pulse modulation control parameter is controlled on the basis of a second control signal. A first control loop is provided to generate the first control signal from an output signal derived from the pulse modulated signal. A second control loop is provided to generate the second control signal on the basis of the output signal. The first and second control signals are applied to concurrently control the first and second pulse modulation control parameters. | 09-01-2011 |
20120057655 | Polar Transmitter Suitable for Monolithic Integration in SoCs - The disclosed polar modulation transmitter circuit is configured to generate an output signal having a transmission frequency that minimizes crosstalk effects between different transmission bands (e.g., Bluetooth, GSM, UMTS, etc.). In particular, a polar modulation transceiver circuit, having an amplitude modulated (AM) signal and a phase modulated (PM) signal, comprises a digitally controlled oscillator (DCO) configured to generate a DCO signal having a DCO frequency. The DCO signal is provided to one or more frequency dividers that are configured to selectively divide the DCO signal to generate various lower frequency signals, used to select a sampling rate for a DAC operating on the AM signal and an RF carrier signal frequency, which result in an output signal having a frequency that does not interfere with other RF systems on the same IC (e.g., that falls outside of the downlink frequency of other RF systems). Other systems and methods are also disclosed. | 03-08-2012 |
20120319749 | DIGITAL PLL WITH AUTOMATIC CLOCK ALIGNMENT - One embodiment of the present invention relates to a digital phase locked loop (ADPLL) configured to generate a plurality of time-aligned output clock signals having different frequency values. The ADPLL comprises a digital controlled oscillator configured to generate a variable clock signal that is separated into two signal paths operating according to two separate clock domains. A first signal path is configured to generate a feedback signal that synchronizes the variable clock signal with a reference signal. A second signal path comprises a clock divider circuit configured to synchronously divide the variable clock signal to automatically generate a plurality of time-aligned output clock signals having different frequencies. A clock aligner monitors a phase difference between the variable clock signal and one of the plurality of time-aligned output clock signals and generates a control signal that causes a programmable delay line to automatically time-align the output clock signals with the variable clock signal. | 12-20-2012 |
20130043852 | Digital Controller for DC/DC Converters - An embodiment switching converter includes a power stage that receives an input voltage for converting it into an output voltage and provides a load current to a load operably coupled to the power stage. The power stage includes an inductor carrying an inductor current and a digital controller configured to regulate the output voltage to a level close to a reference voltage using a pulse width modulated (PWM) signal supplied to the power stage. | 02-21-2013 |
20130063120 | POWER SWITCH RELIABILITY IN SWITCHED CAPACITOR DC-DC CONVERTER - Representative implementations of devices and techniques minimize hot carrier stress in a switched capacitor dc-dc converter. Multi-switch arrangements may be used in conjunction with a timing scheme to stage power switch operation. | 03-14-2013 |
20130106375 | PROGRAMMABLE SWITCHING FOR SWITCHED CAPACITOR DC-DC CONVERTER | 05-02-2013 |
20130106380 | DIGITAL SLOPE CONTROL FOR SWITCHED CAPACITOR DC-DC CONVERTER | 05-02-2013 |
20130106381 | PULSE FREQUENCY MODULATION CONTROL FOR SWITCHED CAPACITOR DC-DC CONVERTER | 05-02-2013 |
20130106382 | DIGITAL CONTROLLER FOR SWITCHED CAPACITOR DC-DC CONVERTER | 05-02-2013 |
20140119476 | POLAR TRANSMITTER SUITABLE FOR MONOLITHIC INTEGRATION IN SoCs - The disclosed polar modulation transmitter circuit is configured to generate an output signal having a transmission frequency that minimizes crosstalk effects between different transmission bands (e.g., Bluetooth, GSM, UMTS, etc.). In particular, a polar modulation transceiver circuit, having an amplitude modulated (AM) signal and a phase modulated (PM) signal, comprises a digitally controlled oscillator (DCO) configured to generate a DCO signal having a DCO frequency. The DCO signal is provided to one or more frequency dividers that are configured to selectively divide the DCO signal to generate various lower frequency signals, used to select a sampling rate for a DAC operating on the AM signal and an RF carrier signal frequency, which result in an output signal having a frequency that does not interfere with other RF systems on the same IC (e.g., that falls outside of the downlink frequency of other RF systems). Other systems and methods are also disclosed. | 05-01-2014 |
20140139230 | METHOD AND APPARATUS FOR DETERMINING A CHARGE STATE - Described are methods and devices by which a charge state of a battery can be determined. The determination is made in various embodiments by substantially separating a load, and detecting voltages associated with the battery, and by including adjustments based on operating conditions of the battery. | 05-22-2014 |
20140139296 | PULSE MODULATION CONTROL IN A DC-DC CONVERTER CIRCUIT - In a device, a pulse modulation switching logic is provided to generate switching signals of a pulse modulator so as to generate a pulse modulated signal with a first pulse modulation control parameter and a second pulse modulation control parameter. The first pulse modulation control parameter is controlled on the basis of a first control signal, and the second pulse modulation control parameter is controlled on the basis of a second control signal. A first control loop is provided to generate the first control signal from an output signal derived from the pulse modulated signal. A second control loop is provided to generate the second control signal on the basis of the output signal. The first and second control signals are applied to concurrently control the first and second pulse modulation control parameters. | 05-22-2014 |
20140372056 | Method and Device for Determining a Parameter of a Model of a Technical Installation - Methods and devices for determining at least one parameter of a model of a technical installation are provided. In this case, the parameters are updated on the basis of measurements as a function of an observation matrix. The observation matrix is prescribed as a function of the model and being able, if appropriate, to depend on a time variable which can be measured. | 12-18-2014 |