Abstract: Disclosed is a battery balancing system, which includes a battery pack block including a first battery module and a second battery module arranged in a first row and a third battery module and a fourth battery module arranged in a second row, a balancing control block including first control circuits respectively connected to the first battery module and the second battery module in the first row and second control circuits respectively connected to the third battery module and the fourth battery module in the second row, a battery state determination block that receives output signals from the first control circuits and the second control circuits to determine states of the first to fourth battery modules, and a controller that applies a first row selection signal to the first control circuits and applies a second row selection signal to the second control circuits.

Abstract: Provided is a fluid viscosity measuring device including a support structure having an opening part, the opening part penetrating the support structure in a first direction, a driving resonator fixed to the support structure and extending to overlap the opening part, and a detection resonator fixed to the support structure and extending parallel to the driving resonator, the detection resonator being spaced apart from the driving resonator in the first direction. The driving resonator includes a first piezoelectric body. The detection resonator includes a second piezoelectric body. The first piezoelectric body and the second piezoelectric body have the same shape.

Abstract: Provided is a power supply device for supplying power to load elements. The power supply device includes a main power module including a main battery, a main power controller configured to control charging and discharging of the main power module, a sub-power module including sub-batteries respectively corresponding to the load elements, and a sub-power controller configured to control charging and discharging of the sub-power module, Based on a remaining capacity of the main battery and a remaining capacity of the sub-batteries, the power supply device is selectively operated in a first mode in which charging and discharging are possible for both the main power module and the sub-power module, a second mode in which charging and discharging are possible only for the sub-power module, or a third mode in which charging and discharging are possible only for the main power module.

Abstract: The present invention relates to a digital clock generation apparatus. The digital clock generation apparatus is directed to providing a digital clock generation apparatus in which hardware is simple, duty cycles are easily controlled, and various duty cycles and various frequency clocks (n× clocks) are provided as compared to a 1× single-phase clock generation apparatus or a 1× multi-phase clock generation apparatus based on the conventional programmable delay element chain.

Abstract: Provided is a fluid viscosity measuring device including a support structure having an opening part, the opening part penetrating the support structure in a first direction, a driving resonator fixed to the support structure and extending to overlap the opening part, and a detection resonator fixed to the support structure and extending parallel to the driving resonator, the detection resonator being spaced apart from the driving resonator in the first direction. The driving resonator includes a first piezoelectric body. The detection resonator includes a second piezoelectric body. The first piezoelectric body and the second piezoelectric body have the same shape.

Abstract: A resonator-based sensor and a sensing method thereof for sensing a change in a material that is subject to be sensed which include: generating an oscillation voltage signal by amplifying a current signal output from a resonator in accordance with a physical-chemical change of the material; and generating a gain control signal corresponding to a motional resistance and a clock signal corresponding to a resonant frequency of the resonator are provided.

Abstract: Provided is a battery module and an electronic device, the battery module including a first battery, a second battery, a correcting element unit, and a battery controller, wherein the first battery includes a first internal resistance and provides a first current, the second battery is connected to the first battery, includes a second internal resistance and provides a second current, the correction element unit is connected to the first battery or the second battery and includes a variable resistor or a current source, the battery controller controls the correction element unit such that the first current is identical to the second current on a basis of a difference between values of the first internal resistance and the second internal resistance, and therefore performances of the first battery and the second battery are prevented from being deteriorated.

Abstract: Provided are an ESD protection diode and an electronic device including the same. An ESD protection diode and an electronic device including the same according to an embodiment of the inventive concept include first to fifth wells. The first well is connected to a first voltage terminal. The second well is connected to a second voltage terminal. The third well is connected to the input/output terminal. The fourth well is disposed between the first well and the third well, and the fifth well is disposed between the second well and the third well. The first to third wells are N-type wells, and the fourth and fifth wells are P-type wells. The first well includes a first N+ diffusion region and the second well includes a second N+ diffusion region. The fourth well includes a first P+ diffusion region and the fifth well includes a second P+ diffusion region.

Abstract: A resonator-based sensor and a sensing method thereof for sensing a change in a material that is subject to be sensed which include: generating an oscillation voltage signal by amplifying a current signal output from a resonator in accordance with a physical-chemical change of the material; and generating a gain control signal corresponding to a motional resistance and a clock signal corresponding to a resonant frequency of the resonator are provided.

Abstract: Provided is a power supply device for supplying power to load elements. The power supply device includes a main power module including a main battery, a main power controller configured to control charging and discharging of the main power module, a sub-power module including sub-batteries respectively corresponding to the load elements, and a sub-power controller configured to control charging and discharging of the sub-power module, Based on a remaining capacity of the main battery and a remaining capacity of the sub-batteries, the power supply device is selectively operated in a first mode in which charging and discharging are possible for both the main power module and the sub-power module, a second mode in which charging and discharging are possible only for the sub-power module, or a third mode in which charging and discharging are possible only for the main power module.

Abstract: Provided are a DC-DC converter driving device and a driving method thereof, the DC-DC converter driving device including an error detector configured to compare a first feedback voltage corresponding to a first output terminal with a first compensation reference voltage to generate a first error voltage, and configured to compare a second feedback voltage corresponding to a second output terminal with a second compensation reference voltage to generate a second error voltage, an interference detector configured to determine interference between the first and second output terminals on the basis of the first and second error voltages to generate an interference error voltage, and a reference voltage compensator configured to assign a weight to the interference error voltage to generate the first and second compensation reference voltages, and thus priorities are determined for outputs of the DC-DC converter and weights according thereto are assigned to reduce occurrence of cross-regulation.

Abstract: Provided are a DC-DC converter driving device and a driving method thereof, the DC-DC converter driving device including an error detector configured to compare a first feedback voltage corresponding to a first output terminal with a first compensation reference voltage to generate a first error voltage, and configured to compare a second feedback voltage corresponding to a second output terminal with a second compensation reference voltage to generate a second error voltage, an interference detector configured to determine interference between the first and second output terminals on the basis of the first and second error voltages to generate an interference error voltage, and a reference voltage compensator configured to assign a weight to the interference error voltage to generate the first and second compensation reference voltages, and thus priorities are determined for outputs of the DC-DC converter and weights according thereto are assigned to reduce occurrence of cross-regulation.

Abstract: Provided are an electronic circuit, a linear regulating circuit, and a DC-DC converting circuit. An embodiment of the inventive concept includes a linear regulating circuit unit for generating, by comparing output voltages and corresponding reference voltages, a transient signal indicating that at least one of the output voltages is in a transient state, or a steady signal indicating that each of the output voltages is in a steady state, and for controlling the output voltages on the basis of the steady signal and the transient signal, an energy storing unit for storing energy used to generate the output voltages, a ground switch unit for controlling connection between the energy storing unit and a ground terminal, an input switch unit for controlling connection between at least one input terminal and the energy storing unit, and an output switch unit for controlling connection between output loads and the energy storing unit.

Abstract: Provided are an electronic circuit, a linear regulating circuit, and a DC-DC converting circuit. An embodiment of the inventive concept includes a linear regulating circuit unit for generating, by comparing output voltages and corresponding reference voltages, a transient signal indicating that at least one of the output voltages is in a transient state, or a steady signal indicating that each of the output voltages is in a steady state, and for controlling the output voltages on the basis of the steady signal and the transient signal, an energy storing unit for storing energy used to generate the output voltages, a ground switch unit for controlling connection between the energy storing unit and a ground terminal, an input switch unit for controlling connection between at least one input terminal and the energy storing unit, and an output switch unit for controlling connection between output loads and the energy storing unit.

Abstract: Provided is a battery module and an electronic device, the battery module including a first battery, a second battery, a correcting element unit, and a battery controller, wherein the first battery includes a first internal resistance and provides a first current, the second battery is connected to the first battery, includes a second internal resistance and provides a second current, the correction element unit is connected to the first battery or the second battery and includes a variable resistor or a current source, the battery controller controls the correction element unit such that the first current is identical to the second current on a basis of a difference between values of the first internal resistance and the second internal resistance, and therefore performances of the first battery and the second battery are prevented from being deteriorated.

Abstract: Provided are an ESD protection diode and an electronic device including the same. An ESD protection diode and an electronic device including the same according to an embodiment of the inventive concept include first to fifth wells. The first well is connected to a first voltage terminal. The second well is connected to a second voltage terminal. The third well is connected to the input/output terminal. The fourth well is disposed between the first well and the third well, and the fifth well is disposed between the second well and the third well. The first to third wells are N-type wells, and the fourth and fifth wells are P-type wells. The first well includes a first N+ diffusion region and the second well includes a second N+ diffusion region. The fourth well includes a first P+ diffusion region and the fifth well includes a second P+ diffusion region.

Abstract: A method of fabricating a flexible piezoelectric energy harvesting device is provided. The method includes forming a piezoelectric layer to include a plurality of first piezoelectric lines spaced apart from each other in one direction and a plurality of second piezoelectric lines respectively filling spaces between the first piezoelectric lines, then placing the piezoelectric layer on a first flexible electrode substrate to come in direct contact with the first flexible electrode, and forming a second flexible electrode substrate on the piezoelectric layer.

Abstract: A method of manufacturing an apparatus for harvesting and storing piezoelectric energy includes forming a groove at a side on a substrate. The method further includes embedding and planarizing a polymer in the groove, forming a piezoelectric energy harvesting device, which converts and stores an external vibration into electric energy, onto the substrate, and forming a piezoelectric MEMS cantilever by forming a hole at a side of the piezoelectric energy harvesting device and by removing the polymer in the groove through the hole.

Abstract: Provided is a DC-DC converter including an inductor configured to store input energy, a ground switch configured to provide a ground path of the inductor in response to a first signal, an inductor switch connected in parallel to the inductor so as to maintain the energy stored in the inductor in response to a second signal, output switches configured to output the energy stored in the inductor as multi-output voltages in response to third signals, and a switch controller including a switch controller configured to determine cross regulation between the multi-outputs and generate the first to third signals for decreasing the cross regulation.

Abstract: Provided is a BrushLess Direct Current (BLDC) motor system including a motor driving circuit configured to control a pulse-width-modulation (PWM) inverter in a first operation mode or a second operation mode according to a control signal, and output a switching signal according to each operation mode, the PWM inverter configured to receive the switching signal to output first three-phase voltages having a first frequency in the first operation mode, and output second three-phase voltages having a second frequency in the second operation mode, a sensorless BLDC motor configured not to operate in the first operation mode by operating based on three-phase voltages having a frequency in a different band from the first frequency, and operate in the second mode by operating based on three-phase voltages having a frequency in an identical band to the second frequency, and a parameter detecting circuit configured to calculate parameter information on the sensorless BLDC motor in the first operation mode by using sens