Abstract: The present disclosure relates to novel imidazo[1,2-a]pyridine derivatives, and more particularly to imidazo[1,2-a]pyridine derivatives of Formula 1 wherein Y1, Y2 and Y3 are each independently H, halogen, a C1-C6 straight chain alkyl unsubstituted or substituted with R1, or hydroxy; R1 is hydroxy; Y4 is H, C1-C6 straight chain alkyl, or C1-C6 alkoxy; and X is H or halogen, and having an excellent activity of inhibiting gastric acid secretion, methods for preparing the same, and the use thereof. The imidazo[1,2-a]pyridine derivatives according to the present disclosure have gastric acid secretion inhibitory activity, and thus may be effectively used for the prevention or treatment of gastrointestinal inflammatory diseases or gastric acid-related diseases.

Abstract: The present disclosure relates to novel imidazo [1,2-?]pyridine derivatives, and more particularly to imidazo [1,2-?]pyridine derivatives having an excellent activity of inhibiting gastric acid secretion, methods for preparing the same, and the use thereof. The imidazo[1,2-?]pyridine derivatives according to the present disclosure have gastric acid secretion inhibitory activity, and thus may be effectively used for the prevention or treatment of gastrointestinal inflammatory diseases or gastric acid-related diseases.

Abstract: One cable compensation circuit is connected to a shunt regulator to generate a feedback voltage corresponding to an output voltage of a power supply device. The cable compensation circuit controls cathode impedance of the shunt regulator according to the output current of the power supply device to compensate a voltage drop generated in a cable.

Abstract: The present invention related to a switch control circuit, a coupled inductor boost converter including the same, and a driving method thereof. The coupled inductor boost converter includes a first inductor connected between an input voltage and a first node, a second inductor connected between the first node and a second node, and a power switch connected between the first node and a ground, and a switch control circuit. The switch control circuit receives a voltage of the second node and turn on the power switch by using the voltage of the second node at a time when a voltage of the first node becomes a zero voltage.

Abstract: A piezoelectric driving circuit generates a first PWM output according to a result of comparison between a ramp signal and a reference sinewave and generates a second PWM according to a result of comparison between the ramp signal and an inverse reference sinewave of the reference sinewave. The switching operation of the first and third switches of the piezoelectric driving circuit are controlled according to the first PWM output and the switching operation of the second and fourth switches of the piezoelectric driving circuit are controlled according to the second PWM output during a first cycle of the reference sinewave and the inverse reference sinewave. The switching operation of the first and third switches are controlled according to the second PWM output and the switching operation of the second and fourth switches are controlled according to the first PWM output during the next second cycle.

Abstract: One cable compensation circuit is connected to a shunt regulator to generate a feedback voltage corresponding to an output voltage of a power supply device. The cable compensation circuit controls cathode impedance of the shunt regulator according to the output current of the power supply device to compensate a voltage drop generated in a cable.

Abstract: A piezoelectric driving circuit generates a first PWM output according to a result of comparison between a ramp signal and a reference sinewave and generates a second PWM according to a result of comparison between the ramp signal and an inverse reference sinewave of the reference sinewave. The switching operation of the first and third switches of the piezoelectric driving circuit are controlled according to the first PWM output and the switching operation of the second and fourth switches of the piezoelectric driving circuit are controlled according to the second PWM output during a first cycle of the reference sinewave and the inverse reference sinewave. The switching operation of the first and third switches are controlled according to the second PWM output and the switching operation of the second and fourth switches are controlled according to the first PWM output during the next second cycle.

Abstract: The present invention related to a switch control circuit, a coupled inductor boost converter including the same, and a driving method thereof. The coupled inductor boost converter includes a first inductor connected between an input voltage and a first node, a second inductor connected between the first node and a second node, and a power switch connected between the first node and a ground, and a switch control circuit. The switch control circuit receives a voltage of the second node and turn on the power switch by using the voltage of the second node at a time when a voltage of the first node becomes a zero voltage.