Abstract:
Provided is a maximum power tracking apparatus. The apparatus includes a battery outputting first power, a switching unit, in response to a switching control signal, converting the first power into second power, and a pulse signal generation unit, based on the first power, controlling a pulse width of the switching control signal and controlling a frequency of the switching control signal.
Abstract:
Provided is a maximum power tracking device. The device includes: a battery outputting a first power; a switching unit changing the first power into a second power in response to a switching control signal; and a pulse modulation generation unit adjusting a pulse width of the switching control signal on the basis of the first power and adjusting a frequency of the switching control signal on the basis of the first power and the second power.
Abstract:
Provided is a motor driving circuit which transmits a driving signal to a motor, including a gate driver generating the driving signal corresponding to a pulse width modulation signal, a pulse width modulation signal generator generating the pulse width modulation signal according to Hall sensor signals received from Hall sensors mounted in the motor, a current sensor measuring a link current provided to the gate driver, a low pass filter outputting a filter current that high frequency components are removed from the measured link current, and a minimum power consumption estimating unit generating a lead angle according to a start signal with reference to the filter current, wherein the pulse with modulating signal is changed according to the lead angle.
Abstract:
Provided is a motor including a motor driving unit outputting a plurality of switching signals and any one of estimated three-phase voltages, in response to a control signal and a compensated position signal; a pulse width modulation (PWM) inverter outputting three-phase voltages and any one of estimated three-phase currents corresponding to the one estimated phase voltage, in response to the plurality switching signals; a motor unit operating based on the three-phase voltages and outputting a position signal according to the operation; and a position signal compensation unit receiving the position signal, the estimated phase voltage and the estimated phase current, detecting a phase difference between the estimated phase voltage and the estimated phase current and compensating for the position signal in response to the detected phase difference.
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 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. According to an embodiment of the inventive concept, an internal circuit is protected fro an ESD pulse applied to a plurality of terminals and holding voltage is increased.
Abstract:
Provided is a motor driving device. The motor driving device includes a motor controller configured to output a first phase signal, a second phase signal, and a third phase signal on the basis of an angle signal, a gate driver configured to output a first phase control signal, a second phase control signal, and a third phase control signal to an external motor on the basis of the first phase signal, the second phase signal, and the third phase signal, respectively, a current sensor configured to detect a first phase current signal, a second phase current signal, and a third phase current signal from the first phase control signal, the second phase control signal, and the third phase control signal, and a sensorless calculation circuit configured to calculate a current calculation signal using the first phase current signal, the second phase current signal, and the third phase current signal, to calculate a voltage calculation signal using the first phase signal and the second phase signal, and to calculate the angle signal using the current calculation signal and the voltage calculation signal.
Abstract:
Provided is a motor driving module for controlling a motor including a rotator and a stator, which includes a motor driving unit controlling a plurality of voltages applied to the motor on a basis of a position signal indicating a position of the rotator in response to an external control signal, an analog-to-digital converter detecting a plurality of phase currents applied to the motor to output a plurality of phase current signals, and a position estimating unit detecting the rotator position to output the position signal on a basis of the plurality of phase current signals, and a position calculating unit detecting the rotator position to output the position signal on a basis of the plurality of synchronized phase current signals.
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 sensing voltages sensed in the PWM inverter.
Abstract:
Provided is a semiconductor device. The semiconductor device includes: a first semiconductor layer having a first region with a first device and a second region with a second device; a device isolation pattern provided in the first semiconductor layer and electrically separating the first device and the second device from each other; a drain provided on a lower surface of the first region of the first semiconductor layer; and a second semiconductor layer provided on a lower surface of the second region of the first semiconductor layer.