Abstract: A controller includes a sampling module that samples a signal indicative of the output voltage, a filter module that filters out a ripple component of a sampled signal to generate a filtered signal, and a proportional-integral-derivative (PAID) controller that generates a duty cycle control signal. The PAID controller includes a first component that scales sample values of the filtered signal to generate a first component signal, a down-sampling module that generates a down-sampled signal, and a storage module that stores a value of the down-sampled signal. The PAID controller also includes a second component that generates a second component signal as a product of a factor and a difference signal between each sample value in the filtered signal and stored value, a third component that scales and accumulates the down-sampled signal to generate a third component signal, and a summing module that sums the first, second and third component signals.

Abstract: A controller for controlling an output voltage of a switched mode power supply (SMPS) comprising a sampling module arranged to sample a signal indicative of the output voltage of the SMPS at a frequency higher than a switching frequency of the SMPS, and a filter module arranged to filter out a ripple component of the sampled signal, comprising: a ripple component estimation module arranged to estimate the ripple component by calculating, for each sample of a plurality of the samples of the signal, an average sample value using the sample value and sample values obtained at corresponding points in preceding switching periods of the SMPS, the sample at each of said corresponding points being separated from said sample of the plurality of samples by a respective integer number of switching periods of the SMPS.

Abstract: A method performed by a first network node of providing a last used PLMN ID in LTE to a second network node, the first network node and the second network node operating in a wireless communications network. The method comprises providing the last used PLMN ID in LTE of a wireless device in the wireless communications network, to the second network node, as soon as a Circuit Switched, CS, call due to a CSFB procedure has been setup. The providing of the PLMN ID is performed by one of: adding information about the last used PLMN ID in LTE to an existing message from the first network node to the second network node, and defining a new message from the first network node to the second network node. The new message comprises the last used PLMN ID in LTE.

Abstract: An isolated fly-buck converter is provided for converting an input voltage to an output voltage, and for generating a voltage indicative of the input voltage. The isolated fly-buck converter comprises on its secondary side an input voltage sensing circuit for generating the voltage indicative of the input voltage, the input voltage sensing circuit comprising a capacitive element and a rectifying element connected in series. The input voltage sensing circuit is connected across a secondary winding of the isolated fly-buck converter such that the rectifying element prevents current from flowing through the input voltage sensing circuit during the fly-buck phase of operation of the converter.

Abstract: Method for manufacturing a hyperpolarized amino acid, in particular glutamine, which substantially limits the formation of by-products, with respect to conventional aqueous preparations of sodium hydroxide with amino acids. The amino acid is in particular admixed with the hydroxide in the substantial absence of water and the dry mixture is dissolved in an anhydrous solvent in the presence of a polarizing agent. The obtained mixture is then subjected to a DNP process and can be used in metabolic MR imaging.

Abstract: A control circuit operable to generate a control signal to control the duty cycle of a switched mode power supply is provided. The control circuit comprises an input terminal for receiving a signal indicative of an input voltage (Vin) of the switched mode power supply, and a reference signal generator to generate, in dependence upon the received signal, a reference signal (VR) that is a function of the input voltage (Vin). The control circuit further comprises an error signal generator to receive a signal indicative of an output voltage (Vout) of the switched mode power supply and to generate an error signal (VE) based on the reference signal (VR) and based on the output voltage, a low pass filter, and a duty cycle control signal generator to generate the control signal to control the duty cycle of the switched mode power supply in dependence upon the error signal (VE).

Abstract: There is provided a controller for controlling an output current of a switched mode power supply, SMPS. The controller comprises a sampling module arranged to sample a signal indicative of the output current of the SMPS at a frequency higher than a switching frequency of the SMPS, and a filter module arranged to filter out a ripple component of the sampled signal. The filter module comprises: a ripple component estimation module arranged to estimate the ripple component; a moving average calculation module arranged to calculate a moving average of the sampled signal; and a subtraction module arranged to generate a filtered signal by subtracting the estimated ripple component from the sampled signal and the calculated moving average. The controller also has a switching control module arranged to generate a control signal for controlling at least one of the switching frequency and a switching duty cycle of the SMPS based on the filtered signal.

Abstract: An isolated fly-buck converter is provided for converting an input voltage to an output voltage, and for generating a voltage indicative of the input voltage. The isolated fly-buck converter comprises on its secondary side an input voltage sensing circuit for generating the voltage indicative of the input voltage, the input voltage sensing circuit comprising a capacitive element and a rectifying element connected in series. The input voltage sensing circuit is connected across a secondary winding of the isolated fly-buck converter such that the rectifying element prevents current from flowing through the input voltage sensing circuit during the fly-buck phase of operation of the converter.

Abstract: A dental implant identification system of the non-contact type has a dental implant (260) and a non-contact tip (262) of a reader probe (263). The dental implant (260) has a non-contact RFID tag (264), which is cylindrical in shape, positioned immovably inside an open cylindrical cavity (266) within the main body of the dental implant (260), The non-contact tip (262) of the reader probe (263) includes, at its leading end, a reader antenna coil (268) (which is a transmitter receiver element in the form of a power coil), a coil positioning spring (270) and a reader positioning collar (272). The reader antenna coil (268) is electrically connected to, and receives its power through, wiring (273) from a match circuit (274) along which current flows.

Abstract: The embodiments herein relate to a method in a UE (101) for handling ESM information. The UE (101) supports reception of information to be used in determination of the ESM information. The UE (101) receives, from an MME (105), information about at least one supported EPS network feature which the UE (101) may use. The information is received before the UE (101) sends ESM information to the MME (105). Based on the received information, the UE (101) determines the ESM information for a PDN connection for the UE (101). The UE (101) sends the determined ESM information to the MME (105).

Abstract: A system and method of determining a value of a feedback parameter of a feedback loop of a power converter. In one embodiment, the method includes shifting an open-loop performance characteristic and a closed-loop performance characteristic of the feedback loop so that values thereof are greater than or equal to respective constants. The method also includes normalizing the open-loop performance characteristic and the closed-loop performance characteristic to a common scale to provide a normalized open-loop performance characteristic and a normalized closed-loop performance characteristic. The method also includes combining the normalized open-loop performance characteristic with the normalized closed-loop performance characteristic to provide a combined normalized performance characteristic. The method also includes finding a value of the feedback parameter that produces an extremum of the combined normalized performance characteristic.

Abstract: A method of operating a switched mode power supply comprising a switched mode converter and a control arrangement. The switched mode converter converts an input voltage to an output voltage and includes a primary winding, controllable switch based circuitry connecting the input voltage over the primary winding, a secondary winding coupled to the primary winding, and an LC filter including an inductive element and a capacitive element, wherein the output voltage is obtained as the voltage over the capacitive element and a duty cycle of the switched mode converter can be controlled by controlling the switch based circuitry. The switched mode converter is controlled depending on measurements of the input and output voltages in a hybrid regulated ratio control scheme. The power of the switched mode power supply is shut off or a current thereof is limited, when a current of the switched mode power supply reaches a maximum current.

Abstract: An isolated buck converter for converting an analog input voltage to an analog output voltage is capable of transferring digital data from the primary side to the secondary side. The converter comprises, on a primary side, a primary winding and a non-isolated buck connected in series, and a pair of switches switchable between a forward phase and a fly-buck phase. A secondary winding, on a secondary side, is inductively coupled to the primary winding, and a first capacitive element is connected over the secondary winding. The output voltage is achieved as the voltage over the first capacitive element. Further, the converter comprises, at the secondary side, supplementary circuitry by aid of which digital data can be transferred from the primary side to the secondary side.

Abstract: A converter control unit, method, and computer program product for controlling a power supply device including a converter that provides power to a load. In one embodiment, the converter control unit is configured to obtain a load voltage measure from the converter representing a load voltage of the load, obtain an estimate of a voltage drop between the converter and the load, and obtain a reference voltage corresponding to a desired load voltage. The converter control unit is also configured to adjust the reference voltage or the load voltage measure with the estimate of the voltage drop, and compare, after the adjustment, the load voltage measure with the reference voltage to acquire an error signal. The converter control unit is still further configured to control the converter to provide the load voltage based on the error signal.

Abstract: A controller, and related method, configured to generate a duty cycle control signal for controlling an output voltage of a switched mode power supply as a function of a reference signal. In one embodiment, the controller is configured to sample a signal indicative of the output voltage to generate a first sampled signal, filter out a ripple component of the first sampled signal to generate a filtered signal, and generate a feedback control signal based on the filtered signal. The controller is also configured to sample a signal indicative of an input voltage of the switched mode power supply to generate a second sampled signal, generate a feed-forward control signal based on the second sampled signal and a feed-forward reference voltage, and generate the duty cycle control signal based on the feedback control signal and the feed-forward control signal.

Abstract: An isolated fly-buck converter provided for converting an input voltage (Vin) to an output voltage (VS) comprises (i) on a primary side, a primary winding (X1) and a non-isolated buck (CP) connected in series, and a pair of switches (Q1, Q2), wherein the switches are switchable between a forward phase, in which the primary winding and the non-isolated buck are connected to the input voltage, and a fly-buck phase, in which the primary winding and the non-isolated buck are disconnected from the input voltage and are connected to one another in a closed circuit; and (ii) on a secondary side, a secondary winding (X2) coupled to the primary winding, and a first capacitive element (CS) connected over the secondary winding and a first rectifying element (D1) connected to the secondary winding to prevent current from being flown through the secondary winding during the forward phase, wherein the output voltage is achieved as the voltage over the first capacitive element.

Abstract: The present invention generally relates to a process for the preparation of aqueous solutions of hyperpolarized molecules ready for use in in-vivo MR diagnostic imaging, the use thereof as MRI contrast agent in investigation methods for producing diagnostic MR images of a human or non-human animal body organ, region or tissue.

Abstract: The present invention generally relates to a composition comprising acetic anhydride, a DNP agent and a gadolinium complex and its use for the preparation of hyperpolarised imaging agent for MR diagnostic analysis.

Abstract: An isolated buck converter for converting an analog input voltage to an analog output voltage is capable of transferring digital data from the primary side to the secondary side. The converter comprises, on a primary side, a primary winding and a non-isolated buck connected in series, and a pair of switches switchable between a forward phase and a fly-buck phase. A secondary winding, on a secondary side, is inductively coupled to the primary winding, and a first capacitive element is connected over the secondary winding. The output voltage is achieved as the voltage over the first capacitive element. Further, the converter comprises, at the secondary side, supplementary circuitry by aid of which digital data can be transferred from the primary side to the secondary side.

Abstract: A switched mode power supply comprising a switched mode converter and a controller for controlling the switched mode converter, the switched mode converter being provided for converting an input voltage to an output voltage and including, on a primary side, a primary winding and a controllable switch based circuitry connecting the input voltage over the primary winding; and, on a secondary side, a secondary winding coupled to the primary winding and a capacitive element connected over the secondary winding, wherein the output voltage is obtained as the voltage over the capacitive element.