Patent application number | Description | Published |
20110234323 | AMPLIFICATION CONTROL CIRCUIT - There is provided an amplification control circuit that can adjust the amount of current being supplied to an amplifier according to a reference signal set beforehand. An amplification control circuit according to an aspect of the invention may include: a power supply section supplying a DC power set beforehand to at least one amplifier according to a reference signal set beforehand; a current control section detecting a current being supplied from the power supply section according to a ratio set beforehand and controlling the amount of current being supplied to the at least one amplifier from the power supply section; and a current adjustment section adjusting a level of the current being controlled by the current control section in order to increase or decrease the amount of current being supplied to the at least one amplifier from the power supply section. | 09-29-2011 |
20120044604 | POWER AMPLIFIER MODULE WITH SHARED ESD PROTECTION CIRCUIT - Disclosed is a power amplifier module with a shared ESD protection circuit. There is provided a power amplifier module including: an ESD protection circuit that is connected to an output terminal of the LDO part, an output conductive wire pad that outputs the operating power of the LDO part; a printed conductive wire pad that is electrically connected to the output conductive wire pad of the PA controller; a first power coupler that includes a first primary side conductive wire electrically connected to the printer conductive wire pad; a second power coupler that includes a second primary side conductive wire electrically connected to the printer conductive wire pad; a first PA part; and a second PA part, wherein each of the first PA part and the second PA part is protected from ESD by the ESD protection circuit. | 02-23-2012 |
20120062324 | RF POWER AMPLIFIER - An RF power amplifier includes an RF choke coil, a power amplification circuit unit, and an electrostatic discharge (ESD) protection unit. The RF choke coil is connected to a voltage terminal through which an operating voltage is applied. The RF choke coil supplies the operating voltage and interrupts an RF signal. The power amplification circuit unit is supplied with the operating voltage through the RF choke coil. The power amplification circuit unit amplifies an input signal inputted through an input terminal and outputs the amplified input signal through an output terminal. The ESD protection unit is connected between a first connection node and a ground. The ESD protection unit bypasses an ESD voltage from the first connection node to the ground, the first connection node being a node between the voltage terminal and the RF choke coil. | 03-15-2012 |
20130072187 | DUAL MODE COMMUNICATIONS DEVICE AND METHOD OF IMPROVING DATA RATE THEREOF - There are provided a dual mode communications device and a method of improving a data rate thereof. The dual mode communications device according to the embodiment of the present invention may include a selection unit | 03-21-2013 |
20140221041 | DUAL MODE COMMUNICATIONS DEVICE AND METHOD OF IMPROVING DATA RATE THEREOF - There are provided a dual mode communications device and a method of improving a data rate thereof. The dual mode communications device according to the embodiment of the present invention may include a selection unit | 08-07-2014 |
Patent application number | Description | Published |
20140362605 | DUTY CONTROL METHOD AND SYSTEM FOR LOW VOLTAGE DC-DC CONVERTER - A duty control method for a low-voltage DC-DC converter (LDC) is provided in which a duty ratio of a high-efficiency and low-voltage DC-DC converter that has a boost converter and a full-bridge converter combined therein is variable-controlled to output low-voltage. In particular, control of a duty ratio of the LDC that includes a boost converter and a full-bridge converter or a half-bridge converter connected in series is improved and by controlling an output voltage of the full-bridge converter in a simple-equation-based variable-duty scheme to output a low voltage for high-voltage input, stable low-voltage output may be achieved over the input and output voltage range. | 12-11-2014 |
20150054469 | CHARGING CONTROL METHOD AND SYSTEM FOR ENVIRONMENTALLY FRIENDLY VEHICLE - A charging control method and system for an environmentally friendly vehicle are provided and promote the enhancement of charging efficiency by improving a power control method of a power factor correction (PFC) converter while a battery is being charged through an on board charger (OBC) in vehicle. The method sensing, by a voltage detector, a battery voltage during charging and calculating, by a controller, a target value to maintain an output voltage of the PFC converter. The target value is calculated from the sensed battery voltage and the maximum available duty value of the DC-DC converter. The output voltage of the PFC converter is maintained, based on the calculated target value. | 02-26-2015 |
20150069953 | CHARGING SYSTEM AND METHOD OF BATTERY - A charging system and method of a battery are provided. The charging system includes a PFC (power factor correction) converter that converts alternating current input voltage into direct current input voltage and outputs the direct current voltage, and corrects a power factor. A DC-DC (direct current-direct current) converter varies the levels of direct current voltage output from the PFC converter and a battery is charged with the current output from the DC-DC converter. In addition, a controller is configured to adjust an output voltage of the PFC converter based on a charging voltage of the battery, which is varied by the charging and discharging of the battery. | 03-12-2015 |
20150146467 | TWO-PHASE INTERLEAVED CONVERTER AND METHOD OF CONTROLLING THE SAME - A two-phase interleaved converter includes two sub-circuits, a voltage controller, a current controller, a balancing controller and a phase shifter. The voltage controller receives the output voltage of the two sub-circuits and outputs a signal in proportion to the level of the output voltage. The current controller receives the output signal of the voltage controller and an inductor current from one of the two sub-circuits and outputs a control signal that controls one of the two sub-circuits which is in charge of one phase. The balancing controller receives values of currents output from the two sub-circuits and calculates a difference between the values of the currents output from the two sub-circuits to control a duty ratio of the control signal applied to one of the two sub-circuits. The phase shifter shifts a phase of the control signal output from the balancing controller. | 05-28-2015 |
20150333624 | METHOD AND APPARATUS FOR CONTROLLING OUTPUT VOLTAGE - An output voltage control method and apparatus are provided. The method includes sensing output voltages of a DC-DC converter and a high-voltage battery and sensing an inductor current flowing through an inductor in a boost circuit at a front end of the DC-DC converter. In addition, the method includes varying a gain of an output voltage controller of the DC-DC converter based on a difference of the sensed inductor current with respect to an inductor current at the center point in a specified region. | 11-19-2015 |
20150333629 | MULTI-PHASE INTERLEAVED CONVERTER AND CONTROL METHOD THEREOF - A multi-phase interleaved converter includes n sub-circuits of phases, a current controller and a balancing controller. The n sub-circuits of phases have inputs connected in parallel and outputs connected in parallel in order to convert a direct current (DC) or alternating current (AC) input voltage of one level into a DC or AC output voltage of another level. The current controller receives a current control command and a phase current value of a particular sub-circuit of a particular phase among the n sub-circuits of the respective phases to output a control signal for controlling the particular sub-circuit of the particular phase. The balancing controller receives phase current values of the n sub-circuits of the respective phases and receives a control signal output from the current controller to adjust the duty ratios of control signals applied to the other sub-circuits. | 11-19-2015 |
20150349560 | BATTERY CHARGING SYSTEM USING CHARGER AND DRIVING CONTROL METHOD OF THE CHARGER THEREOF - A battery charging system using a charger and a driving control method of the charger thereof are provided which increase a driving time of the charger when an instantaneous power failure of charger input voltage occurs in the battery charging system. Thus, a sufficient time is secured for obtaining and processing more precise information regarding a driving state of the charger and the capacity of a capacitor is decreased compared to the related art. | 12-03-2015 |
20160028312 | METHOD AND APPARATUS FOR CONTROLLING CURRENT OF MULTI-PHASE INTERLEAVED CONVERTER - A method and apparatus for controlling a current of a multi-phase interleaved converter are provided. The method includes filtering, through a filter, currents flowing into converters of respective phases in a multi-phase interleaved converter having multiple phases, The method further includes receiving values of the filtered currents for respective phases and a duty ratio for any one of the multiple phases generated in response to a current flowing into the phase and adjusting duty ratios for phases other than the phase, based on the received current values for respective phases. | 01-28-2016 |